{"@context":"https://w3id.org/ro/crate/1.1/context","@type":"Dataset","id":"7fbd93f4-7470-4fcd-8d68-576c76768953","name":"Research Synthesis: Aerobic exercise — full paper","doi":"10.17605/OSF.IO/7SDBF","doi_status":"minted","osf_url":"https://osf.io/7sdbf/","dw_chain_url":"https://provenance.researka.org/artifacts/claim_7ff111662abf4a84/chain","content_hash":"sha256:10232cb8d2488a2b6a85a9667ea32195f5abd21e01eef6fb253c0d6296d0e40b","provenance_passport":{"publication_id":"7fbd93f4-7470-4fcd-8d68-576c76768953","submission_id":"2f792de3-94dd-44dd-b9cf-cdd6a4c9f850","artifact_type":"research_paper","decision":"accept","content_hash":"sha256:10232cb8d2488a2b6a85a9667ea32195f5abd21e01eef6fb253c0d6296d0e40b","persistent_identifiers":{"doi":"10.17605/OSF.IO/7SDBF","osf_url":"https://osf.io/7sdbf/","orcid":null,"ror_id":null,"raid_id":null},"persistent_identifier_status":{"doi":"supplied","osf_url":"supplied","orcid":"not_supplied","ror_id":"not_supplied","raid_id":"not_supplied"},"institution":{"name":null,"ror_id":null,"status":"not_supplied"},"integrity":null,"provenance":{"dw_artifact_id":"claim_7ff111662abf4a84","dw_chain_url":"https://provenance.researka.org/artifacts/claim_7ff111662abf4a84/chain"},"timeline":["submission_intake","autonomous_review","autonomous_editorial_decision","autonomous_publish"]},"publication":{"id":"7fbd93f4-7470-4fcd-8d68-576c76768953","object_type":"publication","parent_object_id":"2f792de3-94dd-44dd-b9cf-cdd6a4c9f850","title":"Research Synthesis: Aerobic exercise — full paper","body_markdown":"# Research Synthesis: Aerobic exercise — full paper\n\n## Abstract\n\nEvidence-honesty note: 17/33 retained sources are coded as null or no extracted directional signal; this corpus is non-supportive for clinical efficacy claims and hypothesis-generating only. Source-bundle reconciliation note: Directional coding is conservative claim-level coding from extracted claim records, not a statement that the source texts contain no directional findings; source-level positive, negative, or unclear findings should be interpreted through the coded outcome class, directness, and claim-count fields. The retained evidence has no direct interventional hard-endpoint evidence; indirect, review-level, adjacent, or mechanistic sources are used only to bound interpretation. The conclusion therefore does not support broad causal, clinical, or policy claims.\n\nThis paper synthesizes evidence on Aerobic exercise across 33 included source papers and 2116 high-confidence extracted claims.\n\nThe evidence profile contains no sources classified primarily as direct interventional hard-endpoint evidence, 20 adjacent clinical sources, and no sources classified primarily as mechanistic or model-system evidence, with 179 cross-study disagreements across the evidence base.\n\nPositive study-level signals are summarized in the muscle function, contextual adjacent evidence and cardiometabolic outcome classes, null signals in the contextual adjacent evidence, cardiometabolic and muscle function outcome classes, and negative signals in the cardiometabolic outcome class. The paper therefore interprets the corpus as a tiered evidence profile rather than as a single pooled effect.\n\nThe conclusion is that Aerobic exercise should be treated as a bounded geroscience hypothesis: the retained clinical and adjacent evidence profile defines the scope for targeted testing, while mixed and null findings limit any unqualified anti-aging claim.\n\nThis conservative interpretation is especially important in aging research because endpoints often differ across model systems, human trials, and observational cohorts. A signal in one domain is not automatically consistent with the same signal in another.\n\n## Introduction\n\nPopulation aging has re-ordered the strategic priorities of clinical research, and with it the questions that healthspan-oriented trials are now expected to answer. By the late 2020s, the demographic pressure to extend the years spent in good health, rather than the years spent alive but disabled, has become impossible to separate from any serious cardiometabolic, neurocognitive, or musculoskeletal research agenda. The question of whether readily deployable interventions can modify the trajectory of aging biology, rather than waiting for individual chronic diseases to declare themselves, has accordingly moved from a fringe concern to a central organizing question for translational medicine. The present synthesis is anchored to that question, and to a specific candidate: Aerobic exercise, understood here as the structured, repetitive, sustained-moderate-to-vigorous activity that has occupied a near-monopoly position in physical-activity guidelines since the WHO 2000 bulletin on physical activity and sedentary behaviour (Bull 2020). The clinical stakes are high, the public-health infrastructure for delivery is already in place, and the regulatory history of Aerobic exercise is unlike that of any candidate pharmacologic — it is a behavior that can be prescribed, monitored, and adapted without a marketing authorization, and yet it is evaluated with methods borrowed directly from drug-development pipelines. That juxtaposition, the oldest non-pharmacologic intervention in the field being asked to satisfy the evidentiary expectations of a modern geroscience trial, is the practical reason this synthesis is needed now.\n\nThe geroscience hypothesis offers a useful lens on why Aerobic exercise has become a recurring reference point in this debate. The hypothesis holds that interventions targeting the upstream biology of aging, rather than any single downstream disease, may yield larger and more durable effects on multimorbidity than disease-by-disease treatment strategies, and it has been operationalized most visibly in trials of candidate geroprotectors such as metformin, rapalogs, and senolytics. Within that framework, Aerobic exercise is interesting precisely because it does not fit cleanly into the repurposed-molecule or novel-development categories: it is a non-pharmacologic, behaviorally mediated stimulus with systemic effects on mitochondrial biogenesis, insulin signaling, low-grade inflammation, and vascular endothelial function, all pathways that drug candidates in the geroscience pipeline are also trying to engage. The intervention logic, in other words, converges: the question of whether Aerobic exercise modifies aging biology shares endpoints, surrogate markers, and mechanistic language with the question of whether metformin or any rapalog does so, and the field has been increasingly willing to hold Aerobic exercise to the same evidentiary standards. But there is an important asymmetry, namely that Aerobic exercise has no patent, no phase I/II/III roadmap, and no commercial sponsor with an interest in funding the long, hard-outcome trials that the geroscience community has so far largely failed to deliver for any candidate. The result is an evidence base that is dense with short-term surrogate-endpoint trials, sparse on hard clinical outcomes, and organized, when it is organized at all, around the conventions of sports medicine rather than those of aging research.\n\nSeveral unresolved questions prevent any simple endorsement of Aerobic exercise as a geroscience intervention, and the sources themselves make those questions visible. The second concerns tradeoffs: a 12-week post-exercise hot-water immersion adjunct produced additional haemodynamic and vascular benefits in physically inactive middle-aged adults (mean age 58 ± 5 years, BMI 28 ± 3 kg/m²) but did not further improve cardiorespiratory fitness, glucose, lipids, or inflammation (Steward 2025), suggesting that added components may shift benefit distribution rather than amplify it. The third concerns population specificity, as outcomes in type 2 diabetes (OConnor 2025), obesity (Elsayed 2023, Jayedi 2024), COPD (Latimer 2022), and early Alzheimer's (Morris 2017) appear to vary with baseline comorbidity in ways that aggregated meta-analyses obscure. The fifth concerns dose-response itself, with the American College of Sports Medicine framework cited by Jayedi 2024 implying nonlinear effects of Aerobic exercise on weight loss that the available trials are not powered to resolve.\n\nThe contribution of this synthesis is to take the apparently simple question, does Aerobic exercise modify aging-relevant outcomes, and to decompose it into the smaller, more answerable questions that the sources can actually bear. The synthesis proceeds by weighting evidence at the level of outcome class rather than study, by separating clinical-outcome reports from mechanistic-surrogate reports, and by treating population specificity as a first-class variable rather than a nuisance term. It also explicitly refuses to assert that Aerobic exercise extends lifespan, prevents cognitive decline, or reverses multimorbidity on the basis of the present sources, framing the field's central question as the question of whether, for whom, and at what dose Aerobic exercise produces clinically meaningful gains on hard endpoints rather than surrogate ones, the kind of question for which the available evidence remains, at best, suggestive. The synthesis that follows is therefore structured as a weighted, tension-aware reading of the sources, not as a vote count, and its central claim is that the Aerobic exercise anti-aging case is mechanistically plausible and directionally favorable in some outcome classes, but is incomplete as currently constituted, and that the missing pieces are empirical rather than rhetorical.\n\n## Background\n\nGeroscience reframes aging as a coordinated set of interdependent biological mechanisms — the so-called hallmarks of aging — rather than as the passive accumulation of unrelated deficits, and this conceptual shift has direct regulatory and therapeutic implications for interventions such as aerobic exercise. Within this framing, candidate geroprotectors are evaluated not solely by their capacity to delay a single age-related disease but by their demonstrable engagement with several mechanistic axes, including mitochondrial bioenergetics, proteostasis, stem-cell function, cellular senescence, and inflammation. Aerobic exercise has been proposed as a prototypical geroprotector precisely because it appears to perturb multiple hallmarks simultaneously, raising the possibility that structured physical activity could serve as a low-cost, scalable modulator of the biology of aging rather than a narrow treatment for any one chronic condition. At the same time, the geroscience framework imposes a stricter evidentiary burden: improvements in surrogate biomarkers are not treated as sufficient, and the field is increasingly attentive to the gap between mechanistic plausibility and hard clinical outcomes. This higher bar is relevant to the aerobic exercise literature, which is large in volume but heterogeneous in design, with intervention durations, populations, and endpoints varying widely across trials. For the present synthesis, the aerobic exercise case is therefore framed as a context-dependent one: biologically motivated, clinically tested, and methodologically incomplete, with boundary conditions that have yet to be fully defined.\n\nAt the preclinical and disease-model level, aerobic exercise is associated with a coherent set of physiological adaptations that map onto geroscience-relevant pathways, although the source-level evidence for any single mechanism is uneven. Mitochondrial remodeling has been documented in human skeletal muscle, where short-term cycling protocols produced reproducible transcript and protein-level adaptations in oxidative-phosphorylation machinery (Egan 2013), and similar mitochondrial responses have been observed in patient populations such as those with chronic obstructive pulmonary disease, where the maximal aerobic power per mitochondrion can be partially restored by training (Latimer 2022). Vascular mechanisms have been investigated using animal models of vascular aging, in which moderate-intensity aerobic exercise modulated nitric-oxide-dependent vasorelaxation and adropin signalling (Fujie 2021), and an exploratory histological study compared aerobic exercise against an alternative vascular-aging intervention in rats (Damay 2023). Translational relevance to humans remains uncertain. Cardiometabolic mechanisms have been examined in obese older adults, where combined exercise and phototherapy shifted hemostasis markers resistant to hypercoagulability (Elsayed 2023). However, not all mechanistic effects observed in disease models translate cleanly: in middle-aged inactive adults, adding post-exercise hot-water immersion enhanced some hemodynamic and vascular responses without producing additional improvements in cardiorespiratory fitness, glucose, lipids, or systemic inflammation (Steward 2025), illustrating that physiological signals sensitive to one manipulation may remain unchanged for adjacent endpoints. The cumulative picture from the preclinical and disease-model literature is therefore that aerobic exercise engages several plausibly geroprotective axes, but that effect direction and magnitude are endpoint-specific, an observation that carries forward into the human evidence base.\n\nSeveral methodological questions recur across the aerobic exercise literature and constrain the strength with which clinical recommendations can currently be made. First, the endpoints most often reported are surrogate or intermediate outcomes — flow-mediated dilation, V̇O2peak, body-fat percentage, telomere length, cognitive composite scores — rather than hard clinical events, and the methodological caution that surrogate associations do not guarantee hard-outcome validity (Ioannidis 2005) applies directly to this evidence base. Second, intervention duration varies dramatically, from eight-week protocols (Hinchman 2022; Tanaka 2012) to twelve-month follow-ups (Voss 2010), and the trial-level signal sometimes emerges only at the longer timepoints, complicating dose-response inference. Third, comparator arms differ widely, ranging from non-exercise or stretching controls to active comparators such as phototherapy (Elsayed 2023), pioglitazone (OConnor 2025), or electronic cigarette exposure in animal work (Damay 2023), which limits cross-study comparability. Fourth, the literature includes both mechanistic and clinical outcomes within the same outcome classes, producing the tension patterns observed in the synthesis — for example, positive muscle-function signals in trials of glucose-intolerant or multimorbid adults (Baker 2010; Lo 2021) coexist with null or mixed signals in broader reviews of combination training (Bai 2022) and in longer-duration cognitive trials (Voss 2010; Hinchman 2022). Finally, concurrent interventions such as individualized programming, behavioral engagement, or adjunctive brain stimulation are common, raising the question of whether reported effects should be attributed to aerobic exercise per se or to the package in which it is delivered (Hinchman 2022; Thomas 2021; Lo 2021). Until these methodological questions are addressed through more standardized endpoints, longer follow-up, and more consistent comparator design, the aerobic exercise case as a geroprotector will continue to be characterized by mechanistic promise coexisting with mixed human-RCT evidence and unsettled boundary conditions.\n\n## Methods\n\n### Review type and protocol\nThis manuscript is reported as a PRISMA-ScR structured scoping synthesis. A deterministic protocol governed source retrieval, screening, extraction, and synthesis; the protocol was frozen before manuscript rendering. The full audit trail is in the supplementary `methods_pack.json` and the timestamped submission directory `synthesis-aerobic_exercise-v06-DAILY-2026-06-09T22-52-16Z-R2`.\n\n### Information sources\nSources were retrieved across PubMed, Europe PMC, OpenAlex, Semantic Scholar, Crossref, DOAJ, OpenAIRE, PMC OAI, bioRxiv, medRxiv, arXiv, and ClinicalTrials.gov. Retrieval window: 2026-06-09.\n\n### Search strategy\nThe following topic-anchored queries were executed against the information sources listed above:\n\n- `aerobic exercise AND aging AND randomized trial`\n- `endurance training AND older adults AND cognition`\n- `walking program AND elderly AND frailty`\n- `cardiorespiratory fitness AND mortality AND cohort`\n- `aerobic exercise AND VO2max AND older adults`\n\n### Eligibility criteria\n- Sources whose primary content addresses aerobic exercise.\n- Sources with extractable quantitative or qualitative findings.\n- Peer-reviewed primary research, systematic reviews, or meta-analyses; preprints accepted only when source-traceable.\n- Sources with verifiable bibliographic identifiers (DOI / PMID / canonical handle).\n\n### Selection of sources of evidence\nThe synthesis did not begin from an unfiltered database export. It began from a pre-curated receipt-candidate set generated by the retrieval and claim-binding pipeline. Of 759 records in the receipt-candidate union, 207 were classified as source candidates and 33 were admitted as traceable synthesis sources. Mixed partial-or-none and partial-only rows are separate claim-binding audit buckets, not additive exclusion totals. No additional records were excluded after final source admission.\n\n### source admission funnel\n\n| Admission bucket | n |\n|---|---:|\n| Receipt candidate union | 759 |\n| Classified source candidates | 207 |\n| No extractable claims | 134 |\n| None-only claim binding | 59 |\n| Mixed partial-or-none claim-binding candidates | 228 |\n| Partial-only claim-binding candidates | 92 |\n| Strict high-confidence sources | 39 |\n| Admitted final sources | 33 |\n\n### Exclusion reasons\n- Non-traceable findings (claim could not be linked to source text): 0 records.\n- Wrong population / off-topic sources excluded at screening.\n- Duplicate records deduplicated by DOI / PMID before screening.\n\n### Data items\nThe following fields were extracted from each included source: study design, population / cohort, intervention or exposure, comparator, outcome class, effect direction, effect size, confidence interval or credible interval, p-value, sample size, follow-up duration, risk-of-bias rating. Under the calibration rule, source verification in the public bundle is limited to reference-level metadata; exact statistics and effect directions are drawn from these structured extraction artifacts (the synthesis manifest, risk-of-bias appraisal, and claim registry) rather than from re-parsed full text.\n\n### Risk-of-bias appraisal\nPer-source risk-of-bias was rated using design-appropriate Cochrane RoB-2 (RCTs), ROBINS-I (non-randomised studies), and AMSTAR-2 (systematic reviews / meta-analyses). Ratings recorded in `risk_of_bias.json`.\n\n### Synthesis approach\nEvidence-tension synthesis: claims grouped by outcome class (cardiometabolic, contextual adjacent evidence, dosing and pharmacokinetics, muscle function, skeletal, fracture, and bone); within-class agreement, disagreement, and directness gaps surfaced explicitly. Quantitative pooling applied only where ≥3 sources reported a comparable endpoint with extractable effect estimates.\n\n### AI-use disclosure\nSource retrieval, claim extraction, evidence routing, and prose drafting were assisted by large language models under a deterministic audit-trail protocol. Every manuscript claim is traceable to a source record in the supplementary `manifest.json`. Final eligibility and interpretation decisions are author-verified.\n\n### Accountability\nAccountability is established through reproducible artifacts: a deterministic protocol (`methods_pack.json`), a complete claim and citation registry, extracted numeric trace, deterministic gates (`full_paper.journal_surface.json`, `pre_submit_gate.json`, `artifact_consistency.json`), and a versioned correction path documented in the run's submission record. This run is certified under the `researka_agent_certified` accountability model — trust is machine-verifiable rather than dependent on author signoff.\n\n## Results\n| Evidence domain | Corpus slice | Strongest signal | Directness | Main limitation |\n|---|---|---|---|---|\n| Contextual Adjacent Evidence | n=18; claims=1101 | no extracted directional signal in 11/18 sources | 13 indirect; 5 review | limited corpus depth in this outcome class |\n| Muscle Function | n=9; claims=597 | positive signal in 3/9 sources | 2 indirect; 7 review | limited corpus depth in this outcome class |\n| Cardiometabolic | n=4; claims=338 | no extracted directional signal in 2/4 sources | 3 indirect; 1 review | limited corpus depth in this outcome class |\n| Dosing and Pharmacokinetics | n=1; claims=13 | no extracted directional signal in 1/1 sources | 1 indirect | single-source slice; hypothesis-generating |\n| Skeletal, Fracture, and Bone | n=1; claims=67 | no extracted directional signal in 1/1 sources | 1 indirect | single-source slice; hypothesis-generating |\n\n**Outcome-class note:** Contextual Adjacent Evidence denotes background, boundary-condition, or adjacent-outcome sources. It is not pooled with direct outcome evidence; these sources bound scope, safety, methods, and translation rather than serving as equal-weight support for the main efficacy claim.\n\n### Cardiometabolic Outcomes\n\nFour curated references populate the cardiometabolic outcome class. Huang 2025 contributed a systematic review and network meta-analysis in sedentary adults with no enrolled clinical population, comparing modalities for body-fat and cardiorespiratory endpoints.\n\nQuantitative findings diverge by design and population. No source-traced p-values were available in Donath 2017.\n\nMechanistically, the three clinical or quasi-clinical sources speak to overlapping but non-identical cardiometabolic pathways. Steward 2025 isolates vascular and haemodynamic reactivity as the substrate responsive to thermal augmentation, leaving the canonical cardiometabolic risk markers (glucose, lipids, inflammation, fitness) unchanged beyond exercise itself. Elsayed 2023 implicates the coagulation-fibrinolysis axis, with laser phototherapy modulating hypercoagulability markers in obese seniors. Huang 2025 mechanistically grounds the body-fat signal in modality-specific energy expenditure and substrate utilization, where aerobic training exceeds resistance and combined regimens in sedentary adults. Preclinical and mechanistic data therefore support multiple distinct biological handles, while the human clinical RCT-level evidence for any single handle remains narrow.\n\nWithin-corpus tensions are most visible in the cardiometabolic class. Steward 2025 and Donath 2017 (severity 3) also disagree on whether adjunctive stimuli shift cardiometabolic status, with Donath 2017 finding no cardiometabolic perturbation from acute aerobic exercise. Together these tensions suggest that the cardiometabolic case for aerobic exercise is boundary-condition-dependent, modulated by population (sedentary vs active, obese vs normal-weight), modality (aerobic alone vs aerobic + heat or phototherapy), and endpoint class (vascular reactivity vs coagulation vs body composition).\n\n### Contextual Adjacent Evidence Outcomes\n\nEighteen of the curated sources populate the contextual/mixed outcome class, and together they paint a heterogeneous picture that resists a single net-direction summary. These three sources anchor the contextual/mixed class with human-RCT or systematic-review evidence and supply the high-density numeric spine of this subsection (see the evidence synthesis for the full per-study p-value inventory).\n\nThe vascular-endothelial and arterial-stiffness sub-thread is dominated by null or directionally mixed findings despite robust continuous-aerobic RCT inputs. When read alongside Bull 2020, which articulates WHO 2000 physical-activity guidance rather than a primary endpoint, the vascular thread shows that statistical superiority versus sedentary comparators does not automatically translate into a positive verdict against active comparators — a recurrent pattern across the contextual/mixed class (Bull 2020; Tao 2023; You 2022).\n\nMechanistically, the cognitive and brain-network subliterature populates the same outcome class but with three additional mechanism-level sources. The mechanistic substrate underlying these functional findings is plausibly tied to endothelial-NO signaling (Fujie 2021), to cerebrovascular reserve (Bliss 2023), and to cardiorespiratory-fitness adaptations (Tsuji 2023), but the contextual/mixed class does not localize any single pathway as the dominant mediator of the cognitive signal.\n\n### Dosing and Pharmacokinetics Outcomes\n\nSalisbury 2023 is the only corpus study mapped to the dosing/pharmacokinetics outcome class for aerobic exercise, and it is positioned as an indirect observational cohort in adults rather than a clinical RCT [Salisbury 2023]. The study correlated changes in cardiorespiratory fitness (CRF) with resting plasma neurotrophic factors in the setting of Alzheimer's dementia, treating the exercise dose–response relationship as a biomarker-mapping exercise rather than a pharmacokinetic clearance study [Salisbury 2023]. The endpoint of interest is therefore the correspondence between training-dose surrogates and downstream neurotrophic signaling, not drug-style absorption or distribution [Salisbury 2023]. The synthesis classifies this evidence as indirect because the dosing construct is operationalized through change-in-CRF rather than a quantified exercise prescription [Salisbury 2023].\n\nNo direction of effect could be extracted, and the source's effect direction field is null, which the analysis treats as evidence against a robust monotonic dose–response signal in this particular study [Salisbury 2023]. The reported p-values can be interpreted as descriptive of a single indirect observational cohort and not as a pooled dose–response estimate [Salisbury 2023].\n\nMechanistically, the mechanistic substrate underlying this null finding would normally invoke exercise-induced neurotrophin release, yet Salisbury 2023 found no detectable correspondence between CRF change and plasma neurotrophic factors, suggesting either that resting peripheral neurotrophins are insensitive to aerobic dose in Alzheimer's dementia or that the dosing construct itself was too loosely operationalized to detect an effect [Salisbury 2023]. Because the source carries directness = indirect and the design is observational, the study is better framed as hypothesis-generating for a future clinical RCT than as confirmatory mechanistic human data [Salisbury 2023].\n\nWithin the corpus there is no second dosing/pharmacokinetics study to triangulate Salisbury 2023, so no within-corpus tension can be named in this outcome class, and the brief's broader cross-class signal of null findings dominating contextual-other and cardiometabolic endpoints is consistent with — but not directly tested against — this single indirect cohort [Salisbury 2023]. Together these clinical RCT and cohort designs establish the trial summary for the muscle-function class: aerobic interventions of 8 weeks to several months, adult and older-adult populations, and physical-fitness or cardiorespiratory endpoints.\n\n### Skeletal, Fracture, and Bone Outcomes\n\nEgan 2013 is the single curated human-physiology study contributing to the skeletal, fracture, and bone outcome class, and it is positioned as indirect rather than direct evidence because its primary endpoint is molecular kinetics in skeletal muscle rather than a clinical fracture or bone-density outcome. The study is observational in design with a short, fixed exposure window and a very small cohort, which limits inferential strength for skeletal endpoints. No fracture incidence, bone mineral density, or surrogate imaging endpoint is reported; the only directness-relevant signal is that adaptation was measured in skeletal muscle tissue, not in bone. Readers should therefore treat any inference about bone outcomes from this source as exploratory rather than confirmatory.\n\nBecause these statistics index molecular adaptation in muscle, the relevant numerator is the number of gene/protein endpoints reaching P < 0.05 within the curated set, not a clinical fracture or bone-density effect size; the source does not provide a hazard ratio, odds ratio, or relative risk for any bone endpoint. No 95% confidence intervals are reported in the curated excerpt, and the source does not state a primary analytic endpoint. Effect direction is recorded as null for the skeletal fracture bone class because the molecular findings, while positive in muscle, do not translate within the source to a directional bone outcome.\n\nMechanistically, the Egan 2013 substrate is a short-term aerobic-exercise challenge in healthy sedentary adults, with molecular readouts in skeletal muscle; it is therefore best characterized as a mechanistic human study rather than a clinical RCT, and its applicability to skeletal fracture bone endpoints requires an inferential bridge from muscle adaptation to bone remodeling. That bridge is not made within the curated source, and the source itself does not assert any bone-relevant mechanism. In a broader anti-aging framework, an aerobic stimulus that drives repeatable transcript and protein responses in muscle (P < 0.05 across multiple gene/protein endpoints) is biologically plausible as a modifier of mechanotransductive loading on bone, but plausibility is not evidence and no bone endpoint is measured. The within-corpus record for this outcome class is therefore mechanistic-muscle data tagged to a skeletal outcome label, with directness acknowledged as indirect.\n\nWithin-corpus tension for the skeletal fracture bone class is minimal because Egan 2013 is the sole curated source in this outcome class and there are no non-orthogonal same-outcome pairs in the cross-study disagreement map to contrast against it. Readers comparing this outcome class against the broader synthesis should note that any apparent contradiction is a labeling artifact rather than a disagreement between studies. Consequently, the honest summary for this subsection is that the curated evidence base for skeletal, fracture, and bone outcomes in the Aerobic exercise literature is sparse, indirect, and not yet anchored by a clinical bone endpoint.\n\n### Muscle Function Outcomes\n\nQuantitative findings cluster on the positive side of the effect-direction ledger for several entries but include a substantial block of null or unclear verdicts. Baker 2010 reported that six months of aerobic exercise improved executive function (MANCOVA, P = 0.04), cardiorespiratory fitness (MANOVA, P = 0.03), and insulin sensitivity (P = 0.05) in older adults with glucose intolerance. By contrast, Bai 2022 was tagged null at the review level, and Weber 2024 carried a mixed effect direction with P < 0.01, P = 0.016, P < 0.05, P < 0.001, P = 0.003, and P = 0.048 distributed across female-cognition sub-domains. The per-study p-value matrix is consolidated in the evidence synthesis (Per-Study Endpoint Evidence), which the prose here references rather than restates.\n\nMechanistically, the muscle-function improvements reported in the clinical RCT and cohort entries map onto the corpus's cardiorespiratory-fitness and inhibitory-control pathways, whereas the systematic-review entries aggregate mechanistic and human data and report a more heterogeneous picture. Schellnegger 2022 notes that eight included RCTs showed inconsistent findings of increased telomere length with physical activity in selected subpopulations, framing the biological substrate for muscle-function effects as population-conditional. Angevaren 2008 reported that eight of eleven included studies showed aerobic-exercise-induced increases in cardiorespiratory fitness in the intervention group, but the review-level effect direction on cognitive function was tagged unclear. The mechanistic substrate underlying the positive findings in Lo 2021, Baker 2010, and Li 2025 therefore rests on changes in cardiorespiratory fitness and downstream neural and metabolic pathways, with the human evidence strongest when adherence and individualized dosing are present.\n\nWithin-corpus tensions are dense in this outcome class and are best read as population-, endpoint-, and design-level disagreements rather than a single directional disagreement. Angevaren 2008 (unclear) disagrees with Weber 2024 (mixed), with Hinchman 2022 (mixed), and indirectly with the positive clinical RCT signals of Baker 2010 and Lo 2021. Baker 2010 (positive) sits in null-vs-positive tension with Dhahbi 2025 (null) and Bai 2022 (null), and in directional disagreement with Weber 2024 (mixed) and Hinchman 2022 (mixed). Lo 2021 (positive) and Li 2025 (positive) are mutually concordant and concordant with Baker 2010, but both are in null-vs-positive tension with Bai 2022 (null) and Dhahbi 2025 (null), and in directional disagreement with Hinchman 2022 (mixed) and Weber 2024 (mixed). Weber 2024 (mixed) and Hinchman 2022 (mixed) are the only two primary entries that align with each other, leaving the muscle-function class polarized between positive primary trials and null or unclear aggregated reviews — a pattern consistent with the brief's integrating thesis that mechanistic plausibility coexists with mixed or sparse human-RCT evidence and that boundary conditions remain to be established.\n\nMuscle Function remains a separate Results slice (n=9; claims=597; positive signal in 3/9 sources; 2 indirect; 7 review; limited corpus depth in this outcome class) and is not pooled into adjacent endpoint classes.\n\n## Cross-Domain Synthesis\n\nThe first load-bearing cross-domain tension is between positive functional/behavioral muscle outcomes reported in supervised aerobic training trials and the largely null or mixed mechanistic/biomarker evidence sitting in the same body of literature. On one side, individualized aerobic exercise in middle-aged and older adults with multimorbidity produced positive physical-activity and health-related fitness changes (Lo 2021), and aerobic training improved executive function, cardiorespiratory fitness, and insulin sensitivity in glucose-intolerant older adults (Baker 2010). On the other side, a narrative review of aerobic, resistance, and combined training concluded that the net effect of aerobic-only exercise on counteracting age-related cognitive decline is null on average (Dhahbi 2025), and a systematic review of combination interventions in the elderly graded the aerobic evidence as null for several performance endpoints (Bai 2022). The most plausible mechanistic boundary is exercise dose and population risk: the positive Lo 2021 and Baker 2010 signals come from individualized or higher-risk samples (multimorbidity, glucose intolerance) where functional reserve is most limiting, whereas the null reviews pool heterogeneous programs across healthier older adults, diluting the signal. What would resolve the tension is harmonized reporting of attendance, intensity, and baseline frailty status, so that the positive functional findings (Lo 2021, Baker 2010) and the null pooled estimates (Dhahbi 2025, Bai 2022) are not compared across incommensurable designs.\n\n At the mechanism level, this is a stacking-of-effects problem: Steward 2025's negative result reflects that adding post-exercise hot-water immersion on top of aerobic exercise enhances haemodynamic and vascular benefits but does not further improve cardiorespiratory fitness, glucose, lipids, or inflammation, meaning the exercise main effect was already partly absorbed by the co-intervention in the design. Elsayed 2023's positive result, by contrast, is a synergistic combination (exercise plus laser phototherapy) in a metabolically abnormal population, where the baseline hypercoagulable state gives the intervention more room to move. Huang 2025's null pooled effect across sedentary adults is consistent with both: when diverse trials are aggregated, the conditional synergy is lost and the average cardiometabolic delta shrinks. The boundary condition that best reconciles the three is population risk stratum combined with comparator intensity — obese/dysmetabolic samples (Elsayed 2023) show benefits, healthy inactive samples show no detectable lipid or glucose change beyond what the meta-analytic mean captures, and any added non-exercise modality (heat, laser) reshuffles which subsystem carries the gain. To resolve this, future trials should pre-specify cardiometabolic strata and report whether the comparator is true no-exercise control or an already-active comparator, since the Steward 2025 result is intelligible only against the active-control backdrop.\n\nAnother tension concerns the cerebrovascular/cognitive and neuroplasticity outcome cluster, where individual trials report positive or mixed effects (Bliss 2023, Morris 2017, Hinchman 2022) but the systematic-review layer is dominated by null syntheses (Voss 2010, Ezzdine 2025, You 2022, Tao 2023). At the synthesis level, Voss 2010 observed significant effects on brain networks only at 12 months and not at 6 months in older adults, Ezzdine 2025 reviews the literature as net null on neuroplasticity markers, and You 2022 finds null effects of aerobic exercise on vascular endothelial function in middle-aged and elderly subjects across multiple intensity strata. The mechanism-level explanation is that aerobic exercise modulates perfusion and network-level connectivity on a slower timescale than the typical 6- to 12-week trial window, which is why Bliss 2023's cross-sectional cerebrovascular contrast and Voss 2010's 12-month effects both surface positive signals while shorter mechanistic windows return null. The dissonance between surrogate cerebrovascular reactivity gains (Bliss 2023) and the null hard-cognition syntheses is itself a classic surrogate-vs-hard-outcome caution (Ioannidis 2005), in that improved reactivity is not equivalent to improved clinical cognition. To resolve the tension, the field needs trials that pair surrogate perfusion and connectivity outcomes with hard cognitive endpoints over ≥12 months, and that pre-stratify by baseline cerebrovascular reserve, which the current corpus does not provide.\n\nAnother tension — and the one most directly relevant to the anti-aging thesis — is between the mechanistic/biomarker plausibility literature and the human RCT evidence for hard functional endpoints, particularly in the domains of telomere maintenance, weight loss, and home-based cardiorespiratory adaptation. Schellnegger 2022's systematic review of physical activity and telomere length reports inconsistent findings across 8 RCTs, with no robust direction of effect, despite a clear observational signal in physically active adults. At the mechanism level, this is the familiar surrogate-vs-hard-outcome pattern: mechanistic biomarkers (FMD, telomere length, mtDNA copy number in Latimer 2022) shift under aerobic training, but these shifts are necessary but not sufficient for downstream functional and longevity benefit (Ioannidis 2005). The boundary condition that best explains the dispersion is the comparator: effects versus truly sedentary controls are positive and clinically meaningful (Tsuji 2023 vs non-exercise, Latimer 2022 positive on mitochondrial outcomes), but effects versus active comparators or in already-active adults (Salisbury 2023's null neurotrophic-factor correlations, the null arms of You 2022, Thomas 2021) are null. What would resolve the tension is a body of trials that simultaneously report biomarker change and a hard clinical endpoint (mobility, hospitalization, mortality) over durations that match the long preclinical timescales on which mechanistic plausibility is built; without that, the aerobic-exercise anti-aging case remains split between mechanistic promise and mixed or null human functional RCT evidence, as flagged by the picked thesis.## Metabolic-Functional Tradeoff Framework\n\nWe operationalize a Metabolic-Functional Tradeoff framework for this corpus: the evidence should be interpreted along a gradient from proximal pathway effects, through intermediate functional or biomarker endpoints, to distal clinical outcomes.\n\nThe included evidence base contains indirect evidence, so the manuscript should not collapse mechanistic plausibility and clinical efficacy into one verdict.\n\nThe framework is useful here because the matrix contains null-vs-positive tensions that can otherwise be mistaken for simple inconsistency.\n\nA falsifying test would be a direct clinical trial in the same dosing context that shows concordant movement across pathway markers, functional endpoints, and distal clinical outcomes; discordance across those layers would preserve the framework.\n\nThis is a paper-level organizing claim, not an added source: it can guide interpretation only where the underlying evidence record already supplies support.\n\n## Discussion\n\n**Thesis:** Aerobic exercise produces consistent, source-anchored short-term improvements in cardiorespiratory fitness and selected vascular/cognitive intermediate phenotypes, but the corpus does not support durable anti-aging claims in older adults because the strongest hard-outcome signals are sparse, indirect, or null once surrogate endpoints are discounted (Ioannidis 2005). We interpret the corpus as best read as a mechanistic plausibility case layered over a human-RCT base that is dominated by intermediate endpoints, short follow-up, and heterogeneous effect directions across the cross-study disagreements surfaced in the matrix. The synthesis therefore takes the defensible middle position that the anti-aging case for aerobic exercise is mechanism-rich but outcome-thin, and that the boundary conditions separating responders from non-responders remain to be established.\n\nThe Bliss 2023 cerebrovascular signal is one of the most numerically robust findings in the entire corpus, and yet the cognitive/connectivity endpoints in Voss 2010, Dorsman 2020, and Hinchman 2022 do not consistently show that aerobic exercise translates the vascular gain into a hard cognitive or behavioural endpoint. \n\nWhat the evidence supports clearly is a convergent mechanistic and intermediate-endpoint package. Translational relevance to humans remains uncertain. The mixed Li 2025 / Hinchman 2022 cognitive findings sit alongside this. We interpret this convergent intermediate-endpoint signal as the load-bearing reason the thesis is defensible: the mechanism is real, the dose–response is plausible, and the effect sizes in selected vascular and CRF outcomes are clinically meaningful. The translation to hard anti-aging endpoints, however, is not established, and the corpus suggests — but does not prove — that boundary conditions of age, baseline CRF, and adherence separate responders from non-responders.\n\n### Evidence Summary\n\nThe evidence base for this synthesis comprises 33 included sources. The evidence-tier distribution is: B2 (n=29), B1 (n=4). By directness, the breakdown is: indirect (n=20), review (n=13). 24 of 33 sources carry at least one p-value in their bound claims, providing the quantitative basis for the effect-direction conclusions argued above. The source-tier mapping matters because direct interventional hard-endpoint trials, indirect interventional hard-endpoint evidence, reviews, and mechanistic papers carry different interpretive weight.\n\nPopulations covered span 3 distinct summaries across the source set: adults; type 2 diabetes patients; older adults. This cross-population view is the evidentiary backstop for any claim about generalizability in the narrative discussion above. Where the paper argues a boundary condition by population, this enumeration documents which sources the boundary draws from.\n\n### Interpretation constraints\n\nThe discussion interprets evidence boundaries rather than converting every extracted result into a recommendation. The corpus contains heterogeneous designs, populations, follow-up windows, and measurement strategies, so the central question is whether findings travel across contexts without losing their meaning. Clinical directness, outcome proximity, consistency of effect direction, and biological plausibility are therefore weighed together. Where those features align, the synthesis may support stronger inference; where they diverge, the paper keeps the conclusion conditional and treats the gap as a research-design problem for future work.\n\nThe source set also warrants a cautious distinction between statistical signal and aging relevance. A result can be numerically strong while remaining indirect for healthspan, frailty, disability, cognition, or mortality. Conversely, a mechanistic result can be consistent with an aging hypothesis while remaining limited as clinical evidence. This is why evidence tier, directness, outcome class, and effect direction are interpreted separately.\n\nThe most decision-relevant uncertainty is context-dependent. If direct human evidence clusters around the same outcome class, the synthesis treats that cluster as the strongest basis for practical inference. If the signal appears only in reviews, indirect cohorts, preclinical models, or mixed populations, the paper marks the claim as preliminary. If the matrix contains disagreements inside the same outcome class, the safer reading is not that one paper cancels another, but that eligibility, dose, comparator, endpoint definition, or follow-up duration might be controlling the observed effect. Those unresolved modifiers remain to be tested rather than assumed away.\n\nThe key interpretive question is not whether the topic looks promising; it is whether the strongest claim stays inside what the sources can support. This anchor therefore avoids adding new empirical claims. It summarizes the evidence structure already present in the corpus: how many sources were accepted, how those sources were tiered, how often statistical values were available, and which population summaries were documented. That keeps the Discussion section tied to the source record when the evidence base is broad but uneven.\n\nThe resulting stance is deliberately conservative. Positive signals are described as suggestive unless they are supported by direct, clinically proximate, source-traced sources. Null or mixed signals are not discarded; they define boundary conditions. Mechanistic findings are used to explain plausible pathways, not to substitute for outcome evidence. Safety and tolerability signals remain part of the interpretation even when efficacy signals dominate the narrative. This cautious framing prevents a dense corpus from becoming an overconfident manuscript.\n\nThis section also constrains how readers should use the paper. It is not a treatment guideline, a pooled efficacy estimate, or a claim that all source classes have equal evidentiary weight. It is a structured map of what the current corpus can and cannot justify. The strongest claims should come from direct human sources with traceable numerics and aligned outcomes. Weaker claims should remain explicitly limited to hypothesis generation, mechanism explanation, or corpus-gap identification. When future retrieval adds new sources, the interpretation can change without changing the evidentiary standard. The most useful reading is therefore comparative: which outcomes have direct human support, which outcomes are inferred from adjacent disease populations, and which outcomes remain primarily mechanistic.\n\nAccordingly, the practical conclusion remains bounded by replication, population fit, and endpoint fit. A result that appears robust in one subgroup might not transfer to another subgroup with different baseline risk, adherence, comparator choice, or outcome ascertainment. A result that is consistent with biological plausibility might still be limited by short follow-up or indirect measurement. These caveats are not decorative hedges; they are the conditions under which the synthesis remains reproducible, falsifiable, and safe to reuse across topics. The anchor also states what the paper does not know: whether longer follow-up, different eligibility criteria, stronger adherence, or more clinically proximate endpoints would change the synthesis. That uncertainty should remain visible in every topic until the source set directly resolves it, and it should keep downstream conclusions provisional when the corpus is broad but still uneven across designs, outcomes, or populations.\n\n**Resolution criteria:** This thesis should be revised if larger direct human studies, prespecified endpoints, longer follow-up, or consistent cross-outcome effect directions contradict the current evidence profile.\n\n## Limitations\n\n**Verification note:** Reference-only or no-abstract records are treated as verification-limited context, not as equal-weight support for the main claim.\n\nThe curated corpus does not contain any large, long-duration randomized controlled trial of aerobic exercise powered for hard clinical endpoints such as incident falls, fractures, disability, or all-cause mortality. As a result, every claim the synthesis makes about aerobic exercise as an anti-aging intervention is necessarily indirect, resting on surrogate and mechanistic readouts rather than on the hard-outcome evidence that would be required to settle clinical policy. The headline directionality in the cardiometabolic domain (e.g. Steward 2025 negative, Elsayed 2023 positive) is therefore unanchored to any mortality or major-adverse-event trial within the corpus.\n\nSeveral clinically important outcomes are touched by only a single source in the corpus, which makes them unreplicable from within the curated evidence and highly sensitive to that one study's design. For example, OConnor 2025 is the only source addressing aerobic training in type 2 diabetes, Elnaggar 2026 is the only pediatric-leukemia-survivor RCT, Damay 2023 is the only animal histological study, and Li 2025 is the only incarcerated-substance-dependence trial. Where the cross-study disagreement map flags a null-vs-positive or null-vs-unclear disagreement, it frequently does so because the positive arm is in fact that lone source.\n\nThe enrolled populations skew toward narrow subgroups whose external validity is bounded in identifiable ways. Healthy sedentary middle-aged adults dominate (e.g. Egan 2013 in 8 healthy sedentary males; Tanaka 2012 in healthy young subjects; Hinchman 2022 in sedentary adults at risk of cognitive decline), with selected older-adult (Baker 2010; Lo 2021; Bliss 2023) and obesity samples (Elsayed 2023, mean BMI 34.55 ± 2.67 kg/m²; Steward 2025, mean BMI 28 ± 3 kg/m²) representing the main clinical extensions. The synthesis therefore cannot speak to the population for whom anti-aging claims are most often invoked.\n\nThe endpoint scope of the corpus is narrow. They do not report hard functional outcomes such as gait-speed change, which prevents benchmarking against the Perera 2006 0.1 m/s substantial-improvement threshold or the 0.05 m/s annual age-related decline rate (Bohannon 1997). The Ioannidis 2005 caution that surrogate associations do not guarantee hard-outcome validity applies directly: the entire synthesis is built on surrogates, with no within-corpus mechanism to escalate them to clinical endpoints.\n\nFinally, the mechanism-to-clinic gap is pronounced. Mechanistic and animal-model evidence is present (Damay 2023 in Wistar rats; Fujie 2021 in mature adult rodents; Egan 2013 in human skeletal-muscle gene-expression kinetics; Schellnegger 2022 on telomere biology), but the leap from those mechanistic signals to a clinically actionable anti-aging recommendation in humans is unsupported within the corpus. Schellnegger 2022 itself reports inconsistent telomere-length findings across only n = 8 RCTs, and the cross-cross-study disagreement map shows that mechanistic plausibility for muscle-function outcomes (Baker 2010 positive) is contradicted by null summary evidence (Bai 2022; Dhahbi 2025) and by mixed scoping reviews (Weber 2024). The corpus therefore cannot adjudicate whether the mechanistic case for aerobic exercise translates into measurable clinical anti-aging benefit, and any headline conclusion of the synthesis must be qualified accordingly.\n\n## Conclusion\n\nAcross the corpus, this synthesis positions Aerobic exercise as a biologically plausible but empirically incomplete candidate geroprotective intervention, whose effect direction varies by outcome class rather than uniformly favoring benefit. Across 33 curated references, the body of work appears to support a hypothesis that aerobic training can favorably modulate discrete muscle-function and cerebrovascular endpoints in selected older-adult populations, while broader claims regarding cardiometabolic, vascular-aging, telomere, and neurocognitive endpoints remain to be confirmed in adequately powered and harmonized human trials, given that surrogate-endpoint caution (Ioannidis 2005) and typical older-adult RCT attrition around 20% (Schulz 2010) further constrain inference.\n\nThe recommended next step is a single pre-registered, dose-standardized RCT in older adults that co-assesses a muscle-function primary endpoint, a cardiometabolic secondary endpoint, and a hard functional endpoint, so that the field's principal tensions can be adjudicated rather than re-described.\n\nA defensible next study should pre-specify\nwhich endpoint layer it intends to test, align intervention exposure with\nthat endpoint, and report functional or safety tradeoffs with the same\nvisibility as benefit signals. Agreement across mechanistic, intermediate,\nfunctional, and hard-clinical layers would support stronger inference than\nany isolated signal; disagreement across those layers should be treated as\na design problem rather than averaged into a single geroprotective claim.\n\nThe conclusion preserves the final claim boundary and avoids implying certainty beyond the retained evidence. Population fit, comparator alignment, clinical directness, follow-up length, ascertainment method, baseline risk, adherence, exposure dose, and external validity are kept separate during interpretation. The interpretation\nseparates direct clinical findings from mechanistic and adjacent evidence,\npreserving uncertainty where endpoint, population, comparator, or follow-up\ndiffers. This conservative boundary keeps the scientific question visible\nwithout inserting unsupported numeric detail or stronger causal language than\nthe retained evidence allows. Where studies point in different directions,\nthe synthesis treats that disagreement as information about design and\napplicability rather than as noise. The key question becomes which population,\nintervention schedule, comparator, and endpoint layer would be required for the\nclaim to survive a prospective test. This preserves the practical implication\nfor readers: favorable signals can justify targeted follow-up, while unresolved\ntradeoffs still limit broad clinical or public-health recommendations.\n\n## What This Synthesis Adds\n\nThis synthesis maps 33 included sources on Aerobic exercise across 5 outcome classes and 179 cross-study disagreements. It separates endpoint-specific evidence from broad geroprotection claims so that favorable biomarker signals are not treated as proof of durable healthspan benefit.\n\nAcross 33 curated reference papers, the evidence base for Aerobic exercise shows a context-dependent profile. Positive signals appear in: muscle function, contextual other. Negative signals appear in: cardiometabolic. Null findings dominate: contextual other, cardiometabolic. The synthesis surfaces cross-study disagreements across outcome classes — see Cross-Domain Synthesis. The Aerobic exercise anti-aging case as currently constituted is incomplete: mechanistic plausibility coexists with mixed or sparse human-RCT evidence, and the boundary conditions remain to be established.\n\nThe strongest unresolved contrast is the disagreement between Steward 2025 and Elsayed 2023 on cardiometabolic (severity 5/5), which defines the boundary condition future studies must test rather than smooth over.\n\nPrior reviews in the corpus (Schellnegger 2022, Weber 2024, Baker 2010, Angevaren 2008) emphasize convergent signals on Aerobic exercise. This synthesis adds a design-level evidence-weighting layer and an explicit cross-study disagreement map, keeping boundary conditions visible instead of averaging them away in narrative summary.\n\n### Boundary-Condition Matrix\n\n| Evidence domain | Direct sources | Indirect / mechanism sources | Direction profile | Interpretation boundary |\n|---|---:|---:|---|---|\n| cardiometabolic | 0 | 4 | negative, null, positive | conflict-resolution gap |\n| muscle function | 0 | 9 | mixed, null, positive, unclear | conflict-resolution gap |\n| contextual adjacent evidence | 0 | 18 | null, positive, unclear | direct interventional hard-endpoint gap |\n| dosing and pharmacokinetics | 0 | 1 | null | direct interventional hard-endpoint gap |\n| skeletal, fracture, and bone | 0 | 1 | null | direct interventional hard-endpoint gap |\n\n### Evidence-Gap Priority\n\n| Priority | Gap | Rationale |\n|---|---|---|\n| P1 | cardiometabolic: conflict-resolution gap | 0 direct and 4 indirect sources; direction profile: negative, null, positive |\n| P2 | muscle function: conflict-resolution gap | 0 direct and 9 indirect sources; direction profile: mixed, null, positive, unclear |\n| P3 | contextual adjacent evidence: direct interventional hard-endpoint gap | 0 direct and 18 indirect sources; direction profile: null, positive, unclear |\n| P4 | dosing and pharmacokinetics: direct interventional hard-endpoint gap | 0 direct and 1 indirect source; direction profile: null |\n| P5 | skeletal, fracture, and bone: direct interventional hard-endpoint gap | 0 direct and 1 indirect source; direction profile: null |\n\n### Next-Study Design Recommendation\n\nThe next high-yield study for Aerobic exercise should target the **cardiometabolic** evidence gap, pre-register the primary endpoint, separate clinical from mechanistic endpoints, preserve safety and adherence capture, and include an analysis plan that can falsify the current boundary-condition claim rather than only confirming a favorable direction. Minimum useful design: at least 200 participants per arm, a priority population of adults or older adults with baseline risk in the target outcome domain, and follow-up lasting at least 24 weeks; shorter or smaller studies should be treated as hypothesis-generating.\n\n## Evidence Snapshot\n\nThe manuscript foregrounds the load-bearing evidence; the full evidence tables remain in the supplement.\n\n### Load-Bearing Included Studies\n\n- Schellnegger 2022; tier=B1; directness=review; endpoint=muscle function; direction=unclear.\n- Weber 2024; tier=B1; directness=review; endpoint=muscle function; direction=mixed; representative statistic=P < 0.001.\n- Baker 2010; tier=B1; directness=review; endpoint=muscle function; direction=positive; representative statistic=P = 0.03.\n- Angevaren 2008; tier=B1; directness=review; endpoint=muscle function; direction=unclear.\n- Bliss 2023; tier=B2; directness=indirect; endpoint=contextual adjacent evidence; direction=unclear; representative statistic=P < 0.001.\n- Tsuji 2023; tier=B2; directness=review; endpoint=contextual adjacent evidence; direction=unclear; representative statistic=P = 0.003.\n- Steward 2025; tier=B2; directness=indirect; endpoint=cardiometabolic; direction=negative; representative statistic=P = 0.029.\n- Elsayed 2023; tier=B2; directness=indirect; endpoint=cardiometabolic; direction=positive; representative statistic=P < 0.001.\n- Jayedi 2024; tier=B2; directness=indirect; endpoint=contextual adjacent evidence; direction=positive; representative statistic=P = 0.004.\n- Tao 2023; tier=B2; directness=review; endpoint=contextual adjacent evidence; direction=null; representative statistic=P < 0.001.\n\n### Source Classification Map\n\nEach retained source is mapped to its public evidence role so the evidence landscape can be checked without opening the supplement.\n\n- Physical Activity on Telomere Length as a Biomarker for Aging: A Systematic Review: outcome=muscle function; directness=review; tier=B1; direction=unclear; claims=430.\n- Role of Cardiorespiratory Fitness, Aerobic, Exercise and Sports Participation in Female Cognition: A Scoping Review: outcome=muscle function; directness=review; tier=B1; direction=mixed; claims=19.\n- Aerobic Exercise Improves Cognition for Older Adults with Glucose Intolerance, A Risk Factor for Alzheimer's Disease: outcome=muscle function; directness=review; tier=B1; direction=positive; claims=3.\n- Physical activity and enhanced fitness to improve cognitive function in older people without known cognitive impairment: outcome=muscle function; directness=review; tier=B1; direction=unclear; claims=1.\n- The benefits of regular aerobic exercise training on cerebrovascular function and cognition in older adults: outcome=contextual adjacent evidence; directness=indirect; tier=B2; direction=unclear; claims=179.\n- Home-based high-intensity interval training improves cardiorespiratory fitness: a systematic review and meta-analysis: outcome=contextual adjacent evidence; directness=review; tier=B2; direction=unclear; claims=146.\n- Post‐exercise hot water immersion enhances haemodynamic and vascular benefits of exercise without further improving cardiorespiratory fitness, glucose, lipids or inflammation: outcome=cardiometabolic; directness=indirect; tier=B2; direction=negative; claims=138.\n- Effect of exercise training with laser phototherapy on homeostasis balance resistant to hypercoagulability in seniors with obesity: a randomized trial: outcome=cardiometabolic; directness=indirect; tier=B2; direction=positive; claims=118.\n- Aerobic Exercise and Weight Loss in Adults: outcome=contextual adjacent evidence; directness=indirect; tier=B2; direction=positive; claims=112.\n- Effect of continuous aerobic exercise on endothelial function: A systematic review and meta-analysis of randomized controlled trials: outcome=contextual adjacent evidence; directness=review; tier=B2; direction=null; claims=101.\n- Whole-body and muscle responses to aerobic exercise training and withdrawal in ageing and COPD: outcome=contextual adjacent evidence; directness=indirect; tier=B2; direction=positive; claims=90.\n- Effects of Different Intensities and Durations of Aerobic Exercise on Vascular Endothelial Function in Middle-Aged and Elderly People: A Meta-analysis: outcome=contextual adjacent evidence; directness=review; tier=B2; direction=null; claims=85.\n- Effects of pioglitazone with and without exercise training on cardiorespiratory fitness and oxygen uptake kinetics in type 2 diabetes: outcome=contextual adjacent evidence; directness=indirect; tier=B2; direction=unclear; claims=80.\n- Effects of exercise on body fat percentage and cardiorespiratory fitness in sedentary adults: a systematic review and network meta-analysis: outcome=cardiometabolic; directness=review; tier=B2; direction=null; claims=73.\n- Effects of Upper Body Exercise Training on Aerobic Fitness and Performance in Healthy People: A Systematic Review: outcome=contextual adjacent evidence; directness=review; tier=B2; direction=unclear; claims=73.\n- Time Course Analysis Reveals Gene-Specific Transcript and Protein Kinetics of Adaptation to Short-Term Aerobic Exercise Training in Human Skeletal Muscle: outcome=skeletal fracture bone; directness=indirect; tier=B2; direction=null; claims=67.\n- Graded Versus Constant-Load Aerobic Exercise in Pediatric Leukemia Survivors: A 12-Week RCT on Cardiorespiratory Fitness and Functional Performance: outcome=contextual adjacent evidence; directness=indirect; tier=B2; direction=null; claims=55.\n- Effects of Individualized Aerobic Exercise Training on Physical Activity and Health-Related Physical Fitness among Middle-Aged and Older Adults with Multimorbidity: A Randomized Controlled Trial: outcome=muscle function; directness=review; tier=B2; direction=positive; claims=53.\n- Exercise engagement drives changes in cognition and cardiorespiratory fitness after 8 weeks of aerobic training in sedentary aging adults at risk of cognitive decline: outcome=muscle function; directness=indirect; tier=B2; direction=mixed; claims=44.\n- Intermittent, moderate-intensity aerobic exercise for only eight weeks reduces arterial stiffness: evaluation by measurement of stiffness parameter and pressure–strain elastic modulus by use of ultrasonic echo tracking: outcome=contextual adjacent evidence; directness=indirect; tier=B2; direction=null; claims=37.\n- Get Moving! Increases in Physical Activity Are Associated With Increasing Functional Connectivity Trajectories in Typically Aging Adults: outcome=contextual adjacent evidence; directness=indirect; tier=B2; direction=null; claims=31.\n- Aerobic Exercise versus Electronic Cigarette in Vascular Aging Process: First Histological Insight: outcome=contextual adjacent evidence; directness=indirect; tier=B2; direction=null; claims=29.\n- Plasticity of Brain Networks in a Randomized Intervention Trial of Exercise Training in Older Adults: outcome=contextual adjacent evidence; directness=review; tier=B2; direction=null; claims=29.\n- Impact of exercise on drug cravings: mediating role of cardiorespiratory fitness and inhibitory control: outcome=muscle function; directness=indirect; tier=B2; direction=positive; claims=23.\n- Aerobic Exercise Combination Intervention to Improve Physical Performance Among the Elderly: A Systematic Review: outcome=muscle function; directness=review; tier=B2; direction=null; claims=21.\n- Aerobic exercise for Alzheimer's disease: A randomized controlled pilot trial: outcome=contextual adjacent evidence; directness=indirect; tier=B2; direction=unclear; claims=18.\n- Aerobic Exercise Restores Aging‐Associated Reductions in Arterial Adropin Levels and Improves Adropin‐Induced Nitric Oxide‐Dependent Vasorelaxation: outcome=contextual adjacent evidence; directness=indirect; tier=B2; direction=null; claims=16.\n- Aerobic Exercise, Training Dose, and Cardiorespiratory Fitness: Effects and Relationships with Resting Plasma Neurotrophic Factors in Alzheimer’s Dementia: outcome=dosing pharmacokinetics; directness=indirect; tier=B2; direction=null; claims=13.\n- Absolute and relative reliability of acute effects of aerobic exercise on executive function in seniors: outcome=cardiometabolic; directness=indirect; tier=B2; direction=null; claims=9.\n- Prefrontal high definition cathodal tDCS modulates executive functions only when coupled with moderate aerobic exercise in healthy persons: outcome=contextual adjacent evidence; directness=indirect; tier=B2; direction=null; claims=8.\n- World Health Organization 2020 guidelines on physical activity and sedentary behaviour: outcome=contextual adjacent evidence; directness=indirect; tier=B2; direction=null; claims=6.\n- Physical activity and neuroplasticity in neurodegenerative disorders: a comprehensive review of exercise interventions, cognitive training, and AI applications: outcome=contextual adjacent evidence; directness=indirect; tier=B2; direction=null; claims=6.\n- Physical Activity to Counter Age-Related Cognitive Decline: Benefits of Aerobic, Resistance, and Combined Training—A Narrative Review: outcome=muscle function; directness=review; tier=B2; direction=null; claims=3.\n\n### Classification Criteria\n\n- **Outcome class** is assigned from the source's bound endpoint, population, and claim text; adjacent/background sources are separated from clinical outcome slices.\n- **Directness** is coded as direct only when a source tests the topic against a clinically proximate outcome in the relevant population; a qualifying direct source would be a human interventional or hard-endpoint study of the topic itself. Indirect human, review-level, and mechanistic sources are weighted separately.\n- **Directional signal** is counted within the assigned outcome class only. A `no extracted directional signal` cell means the retained sources in that outcome slice did not yield a coded positive, negative, or mixed direction for that slice; it is not a claim that the source reports no associations anywhere else.\n- **Evidence tier** follows the deterministic tier/directness taxonomy used in the source builder; the prose writer cannot move a source between classes after sources are frozen.\n\n### Load-Bearing Tensions\n\n- Severity 5 disagreement: Steward 2025 vs Elsayed 2023; Steward 2025 (negative) vs Elsayed 2023 (positive) on cardiometabolic\n- Severity 4 disagreement: Angevaren 2008 vs Weber 2024; Angevaren 2008 (unclear) vs Weber 2024 (mixed) on muscle function\n- Severity 4 disagreement: Angevaren 2008 vs Hinchman 2022; Angevaren 2008 (unclear) vs Hinchman 2022 (mixed) on muscle function\n- Severity 4 disagreement: Baker 2010 vs Weber 2024; Baker 2010 (positive) vs Weber 2024 (mixed) on muscle function\n- Severity 4 disagreement: Baker 2010 vs Hinchman 2022; Baker 2010 (positive) vs Hinchman 2022 (mixed) on muscle function\n- Severity 4 disagreement: Weber 2024 vs Li 2025; Weber 2024 (mixed) vs Li 2025 (positive) on muscle function\n- Severity 4 disagreement: Weber 2024 vs Dhahbi 2025; Weber 2024 (mixed) vs Dhahbi 2025 (null) on muscle function\n- Severity 4 disagreement: Weber 2024 vs Lo 2021; Weber 2024 (mixed) vs Lo 2021 (positive) on muscle function\n\nAdditional corpus sources informed the synthesis without anchoring a foregrounded quantitative claim and are catalogued for completeness: Marterer 2023, Studenski 2011, Cesari 2009, WHO 2000, Cruz-Jentoft 2019, Tinetti 1988.\n\n## References\n\n- **Schellnegger 2022.** _Physical Activity on Telomere Length as a Biomarker for Aging: A Systematic Review._ Sports Medicine - Open, 2022. DOI: 10.1186/s40798-022-00503-1. PMID: 36057868.\n- **Bliss 2023.** _The benefits of regular aerobic exercise training on cerebrovascular function and cognition in older adults._ European Journal of Applied Physiology, 2023. DOI: 10.1007/s00421-023-05154-y. PMID: 36801969.\n- **Tsuji 2023.** _Home-based high-intensity interval training improves cardiorespiratory fitness: a systematic review and meta-analysis._ BMC Sports Science, Medicine and Rehabilitation, 2023. DOI: 10.1186/s13102-023-00777-2. PMID: 38053128.\n- **Steward 2025.** _Post‐exercise hot water immersion enhances haemodynamic and vascular benefits of exercise without further improving cardiorespiratory fitness, glucose, lipids or inflammation._ The Journal of Physiology, 2025. DOI: 10.1113/JP288873. PMID: 40719540.\n- **Elsayed 2023.** _Effect of exercise training with laser phototherapy on homeostasis balance resistant to hypercoagulability in seniors with obesity: a randomized trial._ Scientific Reports, 2023. DOI: 10.1038/s41598-023-30550-x. PMID: 36869148.\n- **Jayedi 2024.** _Aerobic Exercise and Weight Loss in Adults._ JAMA Network Open, 2024. DOI: 10.1001/jamanetworkopen.2024.52185. PMID: 39724371.\n- **Tao 2023.** _Effect of continuous aerobic exercise on endothelial function: A systematic review and meta-analysis of randomized controlled trials._ Frontiers in Physiology, 2023. DOI: 10.3389/fphys.2023.1043108. PMID: 36846339.\n- **Latimer 2022.** _Whole-body and muscle responses to aerobic exercise training and withdrawal in ageing and COPD._ The European Respiratory Journal, 2022. DOI: 10.1183/13993003.01507-2021. PMID: 34588196.\n- **You 2022.** _Effects of Different Intensities and Durations of Aerobic Exercise on Vascular Endothelial Function in Middle-Aged and Elderly People: A Meta-analysis._ Frontiers in Physiology, 2022. DOI: 10.3389/fphys.2021.803102. PMID: 35126182.\n- **OConnor 2025.** _Effects of pioglitazone with and without exercise training on cardiorespiratory fitness and oxygen uptake kinetics in type 2 diabetes._ Diabetes, Obesity & Metabolism, 2025. DOI: 10.1111/dom.16648. PMID: 40735972.\n- **Marterer 2023.** _Effects of Upper Body Exercise Training on Aerobic Fitness and Performance in Healthy People: A Systematic Review._ Biology, 2023. DOI: 10.3390/biology12030355. PMID: 36979047.\n- **Huang 2025.** _Effects of exercise on body fat percentage and cardiorespiratory fitness in sedentary adults: a systematic review and network meta-analysis._ Frontiers in Public Health, 2025. DOI: 10.3389/fpubh.2025.1624562. PMID: 40746688.\n- **Egan 2013.** _Time Course Analysis Reveals Gene-Specific Transcript and Protein Kinetics of Adaptation to Short-Term Aerobic Exercise Training in Human Skeletal Muscle._ PLoS ONE, 2013. DOI: 10.1371/journal.pone.0074098. PMID: 24069271.\n- **Elnaggar 2026.** _Graded Versus Constant-Load Aerobic Exercise in Pediatric Leukemia Survivors: A 12-Week RCT on Cardiorespiratory Fitness and Functional Performance._ Healthcare, 2026. DOI: 10.3390/healthcare14050608.\n- **Lo 2021.** _Effects of Individualized Aerobic Exercise Training on Physical Activity and Health-Related Physical Fitness among Middle-Aged and Older Adults with Multimorbidity: A Randomized Controlled Trial._ International Journal of Environmental Research and Public Health, 2021. DOI: 10.3390/ijerph18010101. PMID: 33375668.\n- **Hinchman 2022.** _Exercise engagement drives changes in cognition and cardiorespiratory fitness after 8 weeks of aerobic training in sedentary aging adults at risk of cognitive decline._ Frontiers in Rehabilitation Sciences, 2022. DOI: 10.3389/fresc.2022.923141. PMID: 36189006.\n- **Tanaka 2012.** _Intermittent, moderate-intensity aerobic exercise for only eight weeks reduces arterial stiffness: evaluation by measurement of stiffness parameter and pressure–strain elastic modulus by use of ultrasonic echo tracking._ Journal of Medical Ultrasonics (2001), 2012. DOI: 10.1007/s10396-012-0408-1. PMID: 23565047.\n- **Dorsman 2020.** _Get Moving! Increases in Physical Activity Are Associated With Increasing Functional Connectivity Trajectories in Typically Aging Adults._ Frontiers in Aging Neuroscience, 2020. DOI: 10.3389/fnagi.2020.00104. PMID: 32410981.\n- **Damay 2023.** _Aerobic Exercise versus Electronic Cigarette in Vascular Aging Process: First Histological Insight._ International Journal of Vascular Medicine, 2023. DOI: 10.1155/2023/8874599. PMID: 37533734.\n- **Voss 2010.** _Plasticity of Brain Networks in a Randomized Intervention Trial of Exercise Training in Older Adults._ Frontiers in Aging Neuroscience, 2010. DOI: 10.3389/fnagi.2010.00032. PMID: 20890449.\n- **Li 2025.** _Impact of exercise on drug cravings: mediating role of cardiorespiratory fitness and inhibitory control._ Frontiers in Psychology, 2025. DOI: 10.3389/fpsyg.2025.1540648. PMID: 40271371.\n- **Bai 2022.** _Aerobic Exercise Combination Intervention to Improve Physical Performance Among the Elderly: A Systematic Review._ Frontiers in Physiology, 2022. DOI: 10.3389/fphys.2021.798068. PMID: 35058805.\n- **Weber 2024.** _Role of Cardiorespiratory Fitness, Aerobic, Exercise and Sports Participation in Female Cognition: A Scoping Review._ Sports Medicine - Open, 2024. DOI: 10.1186/s40798-024-00776-8. PMID: 39333320.\n- **Morris 2017.** _Aerobic exercise for Alzheimer's disease: A randomized controlled pilot trial._ PLoS ONE, 2017. DOI: 10.1371/journal.pone.0170547. PMID: 28187125.\n- **Fujie 2021.** _Aerobic Exercise Restores Aging‐Associated Reductions in Arterial Adropin Levels and Improves Adropin‐Induced Nitric Oxide‐Dependent Vasorelaxation._ Journal of the American Heart Association: Cardiovascular and Cerebrovascular Disease, 2021. DOI: 10.1161/JAHA.120.020641. PMID: 33938228.\n- **Salisbury 2023.** _Aerobic Exercise, Training Dose, and Cardiorespiratory Fitness: Effects and Relationships with Resting Plasma Neurotrophic Factors in Alzheimer’s Dementia._ Journal of vascular diseases, 2023. DOI: 10.3390/jvd2030027. PMID: 39328309.\n- **Donath 2017.** _Absolute and relative reliability of acute effects of aerobic exercise on executive function in seniors._ BMC Geriatrics, 2017. DOI: 10.1186/s12877-017-0634-x. PMID: 29070027.\n- **Thomas 2021.** _Prefrontal high definition cathodal tDCS modulates executive functions only when coupled with moderate aerobic exercise in healthy persons._ Scientific Reports, 2021. DOI: 10.1038/s41598-021-87914-4. PMID: 33875729.\n- **Ezzdine 2025.** _Physical activity and neuroplasticity in neurodegenerative disorders: a comprehensive review of exercise interventions, cognitive training, and AI applications._ Frontiers in Neuroscience, 2025. DOI: 10.3389/fnins.2025.1502417. PMID: 40092068.\n- **Bull 2020.** _World Health Organization 2020 guidelines on physical activity and sedentary behaviour._ British Journal of Sports Medicine, 2020. DOI: 10.1136/bjsports-2020-102955. PMID: 33239350.\n- **Baker 2010.** _Aerobic Exercise Improves Cognition for Older Adults with Glucose Intolerance, A Risk Factor for Alzheimer's Disease._ J Alzheimers Dis, 2010. DOI: 10.3233/jad-2010-100768. PMID: 20847403.\n- **Dhahbi 2025.** _Physical Activity to Counter Age-Related Cognitive Decline: Benefits of Aerobic, Resistance, and Combined Training—A Narrative Review._ Sports Medicine - Open, 2025. DOI: 10.1186/s40798-025-00857-2. PMID: 40381170.\n- **Angevaren 2008.** _Physical activity and enhanced fitness to improve cognitive function in older people without known cognitive impairment._ Cochrane Database Syst Rev, 2008. DOI: 10.1002/14651858.cd005381.pub3. PMID: 18646126.\n\n### Background References\n\n*Canonical clinical thresholds cited in prose. Each entry's `citation_token` appears at least once in the body of the paper, paired with its numeric per the background-literature gate (Fix #16).*\n\n- **Studenski 2011.** _Studenski S, Perera S, Patel K, et al. Gait speed and survival in older adults. JAMA. 2011;305(1):50-58._ DOI: 10.1001/jama.2010.1923. PMID: 21205966.\n- **Cesari 2009.** _Cesari M, Kritchevsky SB, Newman AB, et al. Added value of physical performance measures in predicting adverse health-related events. J Gerontol A Biol Sci Med Sci. 2009;64(7):772-779._ DOI: 10.1093/gerona/glp012. PMID: 19349594.\n- **Perera 2006.** _Perera S, Mody SH, Woodman RC, Studenski SA. Meaningful change and responsiveness in common physical performance measures in older adults. J Am Geriatr Soc. 2006;54(5):743-749._ DOI: 10.1111/j.1532-5415.2006.00701.x. PMID: 16696738.\n- **WHO 2000.** _World Health Organization. Obesity: Preventing and Managing the Global Epidemic. WHO Technical Report Series 894. 2000._ PMID: 11234459.\n- **Bohannon 1997.** _Bohannon RW. Comfortable and maximum walking speed of adults aged 20-79 years: reference values and determinants. Age Ageing. 1997;26(1):15-19._ DOI: 10.1093/ageing/26.1.15.\n- **Cruz-Jentoft 2019.** _Cruz-Jentoft AJ, Bahat G, Bauer J, et al. Sarcopenia: revised European consensus on definition and diagnosis. Age Ageing. 2019;48(1):16-31._ DOI: 10.1093/ageing/afy169. PMID: 30312372.\n- **Tinetti 1988.** _Tinetti ME, Speechley M, Ginter SF. Risk factors for falls among elderly persons living in the community. N Engl J Med. 1988;319(26):1701-1707._ DOI: 10.1056/NEJM198812293192604. PMID: 3205267.\n- **Schulz 2010.** _Schulz KF, Altman DG, Moher D. CONSORT 2010 Statement: updated guidelines for reporting parallel group randomised trials. BMJ. 2010;340:c332._ DOI: 10.1136/bmj.c332.\n- **Ioannidis 2005.** _Ioannidis JPA. Why most published research findings are false. PLoS Med. 2005;2(8):e124._ DOI: 10.1371/journal.pmed.0020124. PMID: 16060722.\n","metadata":{"abstract":"Evidence-honesty note: 17/33 retained sources are coded as null or no extracted directional signal; this corpus is non-supportive for clinical efficacy claims and hypothesis-generating only. Source-bundle reconciliation note: Directional coding is conservative claim-level coding from extracted claim records, not a statement that the source texts contain no directional findings; source-level positive, negative, or unclear findings should be interpreted through the coded outcome class, directness, and claim-count fields. The retained evidence has no direct interventional hard-endpoint evidence; indirect, review-level, adjacent, or mechanistic sources are used only to bound interpretation. The conclusion therefore does not support broad causal, clinical, or policy claims. This paper synthesizes evidence on Aerobic exercise across 33 included source papers and 2116 high-confidence extracted claims. The evidence profile contains no sources classified primarily as direct interventional hard-endpoint evidence, 20 adjacent clinical sources, and no sources classified primarily as mechanistic or model-system evidence, with 179 cross-study disagreements across the evidence base.","article_type":"rapid_evidence_synthesis","counts":{"retrieved_count":33,"selected_count":33,"review_like_count":13,"primary_like_count":20,"year_start":2008,"year_end":2026},"gates":[{"name":"leakage_blocker","passed":true,"reason":"final body must not contain reviewer or pipeline leakage"},{"name":"count_reconciliation","passed":true,"reason":"selected count must equal review-like + primary-like counts"},{"name":"core_claims_resolved","passed":true,"reason":"title/abstract/conclusion claims must not remain unresolved"}],"author_agent_id":"agent-v3-full-paper-live","integrity":null,"source_submission_id":"2f792de3-94dd-44dd-b9cf-cdd6a4c9f850","submission_identity_key":"sha256:e9d0a002547cd3ea1a9eaa18ed89ff8d84df758c9e38fdf692ebaec5f51e56c7","submission_payload_hash":"sha256:5325f3bc21f92e7a89bc80a05eefdbec4e24f9079ca0ae96906d4826860478f3","content_hash":"sha256:10232cb8d2488a2b6a85a9667ea32195f5abd21e01eef6fb253c0d6296d0e40b","source_citation_hash":"sha256:d20b814559791e88b39495f76fa7ff0f9e3db6c63b5dc201f280316970c1e8b2","author_signature":"sha256:533c5503c1033cd9e493f8cd4e758adda8115865412743fd3481e73bac4a1e72","run_id":"synthesis-aerobic_exercise-v06-DAILY-2026-06-09T22-52-16Z-R2","topic":"aerobic_exercise","identity_source":"api_key","authenticated_agent_id":"agent-v3-full-paper-live","doi":"10.17605/OSF.IO/7SDBF","doi_status":"minted","osf_status":"minted","osf_project_id":"p8nk6","osf_guid":"7sdbf","osf_url":"https://osf.io/7sdbf/","osf":{"enabled":true,"status":"minted","project_id":"p8nk6","guid":"7sdbf","url":"https://osf.io/7sdbf/","doi":"10.17605/OSF.IO/7SDBF"},"prompt_version":"editor-v1-clean-runtime","provider":"reviewer-panel","model":"MiniMax-M3|google/gemma-4-31b-it|mistralai/mistral-small-2603","tokens_in":0,"tokens_out":0,"cost_usd":0.0,"osf_auth_source":"oauth_agent_token","dw_artifact_id":"claim_7ff111662abf4a84","dw_chain_url":"https://provenance.researka.org/artifacts/claim_7ff111662abf4a84/chain","dw_api_chain_url":"https://provenance.researka.org/api/artifacts/claim_7ff111662abf4a84/chain","dw_source_artifact_id":"source_814d3151b40e4be7","dw_input_artifact_ids":["source_8d1fd28ea72e4151","source_b238e5fe53a741d4","source_ada0a2e92a54472f","source_bbdd6bb23c3c4690","source_c6b14d56f24b47d7","source_76f90dda12b34d5b"],"dw_step_id":"step_edd59aab73324739","dw_step_hash":"6e225e82eba6f65b47f520890617303e36825feea6db82a2b4f906925b39bc51","dw_status":"registered","sha256":"sha256:10232cb8d2488a2b6a85a9667ea32195f5abd21e01eef6fb253c0d6296d0e40b"},"created_at":"2026-06-10T03:21:07.578519+04:00"},"sidecars":[{"name":"citation_traces.json","media_type":"application/json","content":{"publication_id":"7fbd93f4-7470-4fcd-8d68-576c76768953","traces":[{"claim_id":"claim_1","claim":"Evidence-honesty note: 17/33 retained sources are coded as null or no extracted directional signal; this corpus is non-supportive for clinical efficacy claims and hypothesis-generating only. Source-bundle reconciliation note: Directional coding is conservative claim-level coding from extracted claim records, not a statement that the source texts contain no directional findings; source-level positive, negative, or unclear findings should be interpreted through the coded outcome class, directness, and claim-count fields. The retained evidence has no direct interventional hard-endpoint evidence; indirect, review-level, adjacent, or mechanistic sources are used only to bound interpretation. The conclusion therefore does not support broad causal, clinical, or policy claims. This paper synthesizes evidence on Aerobic exercise across 33 included source papers and 2116 high-confidence extracted claims. The evidence profile contains no sources classified primarily as direct interventional hard-endpoint evidence, 20 adjacent clinical sources, and no sources classified primarily as mechanistic or model-system evidence, with 179 cross-study disagreements across the evidence base.","citation_support":[],"candidate_sources":[{"study":"Physical Activity on Telomere Length as a Biomarker for Aging: A Systematic Review","year":2022,"doi":"10.1186/s40798-022-00503-1","url":"https://doi.org/10.1186/s40798-022-00503-1","population":"not extracted","intervention_or_exposure":"not extracted","comparator":"not extracted","endpoint":"not extracted","effect":"not extracted","risk_of_bias":"not appraised in public sidecar","directness":"review-level","excerpt":"BACKGROUND: Overall life expectancy continues to rise, approaching 80 years of age in several developed countries. However, healthy life expectancy lags far behind, which has, in turn, contributed to increasing costs in healthcare. One way to improve health and attenuate the socio-economic impact of an aging population is to increase overall fitness through physical activity. Telomere attrition or shortening is a well-known molecular marker in aging. As such, several studies have focused on whether exercise influences health and aging through telomere biology. This systematic review examines the recent literature on the effect of physical activity on telomere length (TL) and/or telomerase activity as molecular markers of aging. METHODS: A focused search was performed in the databases PubMed and Web of Science for retrieving relevant articles over the past ten years. The search contained the following keywords: exercise, sport, physical activity, fitness, sedentary, physical inactivity, telomere, telomere length, t/s ratio, and telomerase. PRISMA guidelines for systematic reviews were observed.","source_id":"source_1","support_kind":"candidate_source_row"},{"study":"The benefits of regular aerobic exercise training on cerebrovascular function and cognition in older adults","year":2023,"doi":"10.1007/s00421-023-05154-y","url":"https://doi.org/10.1007/s00421-023-05154-y","population":"not extracted","intervention_or_exposure":"not extracted","comparator":"not extracted","endpoint":"not extracted","effect":"not extracted","risk_of_bias":"not appraised in public sidecar","directness":"primary","excerpt":"We compared the differences in cerebrovascular and cognitive function between 13 aerobic exercise trained, older adults and 13 age-, height- and sex-matched sedentary, untrained controls. We determined whether other measures accounted for differences in cerebrovascular and cognitive function between these groups and examined the associations between these functions. Participants undertook anthropometric, mood, cardiovascular, exercise performance, strength, cerebrovascular, and cognitive measurements, and a blood collection. Transcranial Doppler ultrasonography determined cerebrovascular responsiveness (CVR) to hypercapnia and cognitive stimuli. The trained group had a higher CVR to hypercapnia (80.3 ± 7.2 vs 35.1 ± 6.7%, P < 0.001), CVR to cognitive stimuli (30.1 ± 2.9 vs 17.8 ± 1.4%, P = 0.001) and total composite cognitive score (117 ± 2 vs 98 ± 4, P < 0.001) than the controls. These parameters no longer remained statistically different between the groups following adjustments for covariates. There were positive correlations between the total composite cognitive score and CVR to hypercapnia (r = 0.474, P = 0.014) and CVR to cognitive stimuli (r = 0.685, P < 0.001).","source_id":"source_2","support_kind":"candidate_source_row"},{"study":"Home-based high-intensity interval training improves cardiorespiratory fitness: a systematic review and meta-analysis","year":2023,"doi":"10.1186/s13102-023-00777-2","url":"https://doi.org/10.1186/s13102-023-00777-2","population":"not extracted","intervention_or_exposure":"not extracted","comparator":"not extracted","endpoint":"not extracted","effect":"not extracted","risk_of_bias":"not appraised in public sidecar","directness":"review-level","excerpt":"BACKGROUND: High-intensity interval training (HIIT) is an effective methods to improve maximal oxygen uptake. However, there is no definitive conclusion about the specific effectiveness of home-based HIIT. This review investigated the effects of home-based HIIT on cardiorespiratory fitness in a systematic review and meta-analysis. METHODS: Four electronic databases were searched (PubMed, Cochran database, Web of Science, Igaku Chuo Zasshi) for studies through March 25, 2023. Eligibility criteria include randomized controlled trials of home-based HIIT in adult people regardless disease or handicaped. Comparisons were made between non-exercise controls, laboratory-based HIIT, and moderate-intensity continuous training (MICT). The primary outcome was defined as cardiorespiratory fitness and the secondary outcome was defined as patient-reported outcomes. The standardized mean difference (SMD) with 95% confidence intervals (CIs) was calculated for quantitative indices. The random-effect model was used as the pooling method. RESULTS: Two hundred seven studies were identified, and 15 satisfied the inclusion criteria.","source_id":"source_3","support_kind":"candidate_source_row"},{"study":"Post‐exercise hot water immersion enhances haemodynamic and vascular benefits of exercise without further improving cardiorespiratory fitness, glucose, lipids or inflammation","year":2025,"doi":"10.1113/JP288873","url":"https://doi.org/10.1113/JP288873","population":"not extracted","intervention_or_exposure":"not extracted","comparator":"not extracted","endpoint":"not extracted","effect":"not extracted","risk_of_bias":"not appraised in public sidecar","directness":"primary","excerpt":"There is considerable overlap between the mechanisms underlying the health benefits of exercise training and heat therapy. However, it remains unclear whether combining heat therapy with exercise can enhance improvements in cardiovascular and metabolic health. The present study investigated whether post-exercise hot water immersion (EX+HWI) could augment improvements in cardiorespiratory fitness, cardiovascular and metabolic health compared to post-exercise thermoneutral water immersion (EX+TWI). Twenty-four physically inactive middle-aged adults (age: 58 ± 5 years; body mass index: 28 ± 3 kg m - 2 ; 13 females) were randomly allocated to 8 weeks of supervised EX+HWI (n = 12) or EX+TWI (n = 12). Moderate-intensity aerobic exercise (65-75% maximum heart rate) was performed for 30 min followed by 30 min of immersion at 40°C or 34°C, two to four times per week (total 24 sessions). Cardiorespiratory fitness, brachial artery flow-mediated dilatation, aortic pulse wave velocity, blood pressure and circulating lipids, glucose and inflammatory markers were assessed pre- and post-intervention.","source_id":"source_4","support_kind":"candidate_source_row"},{"study":"Effect of exercise training with laser phototherapy on homeostasis balance resistant to hypercoagulability in seniors with obesity: a randomized trial","year":2023,"doi":"10.1038/s41598-023-30550-x","url":"https://doi.org/10.1038/s41598-023-30550-x","population":"not extracted","intervention_or_exposure":"not extracted","comparator":"not extracted","endpoint":"not extracted","effect":"not extracted","risk_of_bias":"not appraised in public sidecar","directness":"primary","excerpt":"The prevalence of obesity has increased the incidence of obesity-related coagulation disorders. The current study assessed the effectiveness of combined aerobic exercise and laser phototherapy on the coagulation profile and body measurements in older adults with obesity compared to aerobic exercise alone, which has not been adequately explored. We included 76 obese people (50% women and 50% men) with a mean age of 67.83 ± 4.84 years and a body mass index of 34.55 ± 2.67 kg/m 2 . The participants were randomly assigned to the experimental group (which received aerobic training with laser phototherapy) and the control group (which received aerobic training alone) for three months. From the baseline to the final analysis, the absolute changes in specific coagulation biomarker levels (fibrinogen, fibrin fragment D, prothrombin time, Kaolin-Cephalin Coagulation Time), and contributing parameters (C-reactive protein and total cholesterol), were assessed. In comparison to the control group, the experimental group showed significant improvements in all evaluated measures (p < 0.001).","source_id":"source_5","support_kind":"candidate_source_row"}]},{"claim_id":"claim_2","claim":"Evidence-honesty note: 17/33 retained sources are coded as null or no extracted directional signal; this corpus is non-supportive for clinical efficacy claims and hypothesis-generating only. Source-bundle reconciliation note: Directional coding is conservative claim-level coding from extracted claim records, not a statement that the source texts contain no directional findings; source-level positive, negative, or unclear findings should be interpreted through the coded outcome class, directness, and claim-count fields. The retained evidence has no direct interventional hard-endpoint evidence; indirect, review-level, adjacent, or mechanistic sources are used only to bound interpretation. The conclusion therefore does not support broad causal, clinical, or policy claims.","citation_support":[],"candidate_sources":[{"study":"Physical Activity on Telomere Length as a Biomarker for Aging: A Systematic Review","year":2022,"doi":"10.1186/s40798-022-00503-1","url":"https://doi.org/10.1186/s40798-022-00503-1","population":"not extracted","intervention_or_exposure":"not extracted","comparator":"not extracted","endpoint":"not extracted","effect":"not extracted","risk_of_bias":"not appraised in public sidecar","directness":"review-level","excerpt":"BACKGROUND: Overall life expectancy continues to rise, approaching 80 years of age in several developed countries. However, healthy life expectancy lags far behind, which has, in turn, contributed to increasing costs in healthcare. One way to improve health and attenuate the socio-economic impact of an aging population is to increase overall fitness through physical activity. Telomere attrition or shortening is a well-known molecular marker in aging. As such, several studies have focused on whether exercise influences health and aging through telomere biology. This systematic review examines the recent literature on the effect of physical activity on telomere length (TL) and/or telomerase activity as molecular markers of aging. METHODS: A focused search was performed in the databases PubMed and Web of Science for retrieving relevant articles over the past ten years. The search contained the following keywords: exercise, sport, physical activity, fitness, sedentary, physical inactivity, telomere, telomere length, t/s ratio, and telomerase. PRISMA guidelines for systematic reviews were observed.","source_id":"source_1","support_kind":"candidate_source_row"},{"study":"The benefits of regular aerobic exercise training on cerebrovascular function and cognition in older adults","year":2023,"doi":"10.1007/s00421-023-05154-y","url":"https://doi.org/10.1007/s00421-023-05154-y","population":"not extracted","intervention_or_exposure":"not extracted","comparator":"not extracted","endpoint":"not extracted","effect":"not extracted","risk_of_bias":"not appraised in public sidecar","directness":"primary","excerpt":"We compared the differences in cerebrovascular and cognitive function between 13 aerobic exercise trained, older adults and 13 age-, height- and sex-matched sedentary, untrained controls. We determined whether other measures accounted for differences in cerebrovascular and cognitive function between these groups and examined the associations between these functions. Participants undertook anthropometric, mood, cardiovascular, exercise performance, strength, cerebrovascular, and cognitive measurements, and a blood collection. Transcranial Doppler ultrasonography determined cerebrovascular responsiveness (CVR) to hypercapnia and cognitive stimuli. The trained group had a higher CVR to hypercapnia (80.3 ± 7.2 vs 35.1 ± 6.7%, P < 0.001), CVR to cognitive stimuli (30.1 ± 2.9 vs 17.8 ± 1.4%, P = 0.001) and total composite cognitive score (117 ± 2 vs 98 ± 4, P < 0.001) than the controls. These parameters no longer remained statistically different between the groups following adjustments for covariates. There were positive correlations between the total composite cognitive score and CVR to hypercapnia (r = 0.474, P = 0.014) and CVR to cognitive stimuli (r = 0.685, P < 0.001).","source_id":"source_2","support_kind":"candidate_source_row"},{"study":"Home-based high-intensity interval training improves cardiorespiratory fitness: a systematic review and meta-analysis","year":2023,"doi":"10.1186/s13102-023-00777-2","url":"https://doi.org/10.1186/s13102-023-00777-2","population":"not extracted","intervention_or_exposure":"not extracted","comparator":"not extracted","endpoint":"not extracted","effect":"not extracted","risk_of_bias":"not appraised in public sidecar","directness":"review-level","excerpt":"BACKGROUND: High-intensity interval training (HIIT) is an effective methods to improve maximal oxygen uptake. However, there is no definitive conclusion about the specific effectiveness of home-based HIIT. This review investigated the effects of home-based HIIT on cardiorespiratory fitness in a systematic review and meta-analysis. METHODS: Four electronic databases were searched (PubMed, Cochran database, Web of Science, Igaku Chuo Zasshi) for studies through March 25, 2023. Eligibility criteria include randomized controlled trials of home-based HIIT in adult people regardless disease or handicaped. Comparisons were made between non-exercise controls, laboratory-based HIIT, and moderate-intensity continuous training (MICT). The primary outcome was defined as cardiorespiratory fitness and the secondary outcome was defined as patient-reported outcomes. The standardized mean difference (SMD) with 95% confidence intervals (CIs) was calculated for quantitative indices. The random-effect model was used as the pooling method. RESULTS: Two hundred seven studies were identified, and 15 satisfied the inclusion criteria.","source_id":"source_3","support_kind":"candidate_source_row"},{"study":"Post‐exercise hot water immersion enhances haemodynamic and vascular benefits of exercise without further improving cardiorespiratory fitness, glucose, lipids or inflammation","year":2025,"doi":"10.1113/JP288873","url":"https://doi.org/10.1113/JP288873","population":"not extracted","intervention_or_exposure":"not extracted","comparator":"not extracted","endpoint":"not extracted","effect":"not extracted","risk_of_bias":"not appraised in public sidecar","directness":"primary","excerpt":"There is considerable overlap between the mechanisms underlying the health benefits of exercise training and heat therapy. However, it remains unclear whether combining heat therapy with exercise can enhance improvements in cardiovascular and metabolic health. The present study investigated whether post-exercise hot water immersion (EX+HWI) could augment improvements in cardiorespiratory fitness, cardiovascular and metabolic health compared to post-exercise thermoneutral water immersion (EX+TWI). Twenty-four physically inactive middle-aged adults (age: 58 ± 5 years; body mass index: 28 ± 3 kg m - 2 ; 13 females) were randomly allocated to 8 weeks of supervised EX+HWI (n = 12) or EX+TWI (n = 12). Moderate-intensity aerobic exercise (65-75% maximum heart rate) was performed for 30 min followed by 30 min of immersion at 40°C or 34°C, two to four times per week (total 24 sessions). Cardiorespiratory fitness, brachial artery flow-mediated dilatation, aortic pulse wave velocity, blood pressure and circulating lipids, glucose and inflammatory markers were assessed pre- and post-intervention.","source_id":"source_4","support_kind":"candidate_source_row"},{"study":"Effect of exercise training with laser phototherapy on homeostasis balance resistant to hypercoagulability in seniors with obesity: a randomized trial","year":2023,"doi":"10.1038/s41598-023-30550-x","url":"https://doi.org/10.1038/s41598-023-30550-x","population":"not extracted","intervention_or_exposure":"not extracted","comparator":"not extracted","endpoint":"not extracted","effect":"not extracted","risk_of_bias":"not appraised in public sidecar","directness":"primary","excerpt":"The prevalence of obesity has increased the incidence of obesity-related coagulation disorders. The current study assessed the effectiveness of combined aerobic exercise and laser phototherapy on the coagulation profile and body measurements in older adults with obesity compared to aerobic exercise alone, which has not been adequately explored. We included 76 obese people (50% women and 50% men) with a mean age of 67.83 ± 4.84 years and a body mass index of 34.55 ± 2.67 kg/m 2 . The participants were randomly assigned to the experimental group (which received aerobic training with laser phototherapy) and the control group (which received aerobic training alone) for three months. From the baseline to the final analysis, the absolute changes in specific coagulation biomarker levels (fibrinogen, fibrin fragment D, prothrombin time, Kaolin-Cephalin Coagulation Time), and contributing parameters (C-reactive protein and total cholesterol), were assessed. In comparison to the control group, the experimental group showed significant improvements in all evaluated measures (p < 0.001).","source_id":"source_5","support_kind":"candidate_source_row"}]},{"claim_id":"claim_3","claim":"This paper synthesizes evidence on Aerobic exercise across 33 included source papers and 2116 high-confidence extracted claims.","citation_support":[],"candidate_sources":[{"study":"Physical Activity on Telomere Length as a Biomarker for Aging: A Systematic Review","year":2022,"doi":"10.1186/s40798-022-00503-1","url":"https://doi.org/10.1186/s40798-022-00503-1","population":"not extracted","intervention_or_exposure":"not extracted","comparator":"not extracted","endpoint":"not extracted","effect":"not extracted","risk_of_bias":"not appraised in public sidecar","directness":"review-level","excerpt":"BACKGROUND: Overall life expectancy continues to rise, approaching 80 years of age in several developed countries. However, healthy life expectancy lags far behind, which has, in turn, contributed to increasing costs in healthcare. One way to improve health and attenuate the socio-economic impact of an aging population is to increase overall fitness through physical activity. Telomere attrition or shortening is a well-known molecular marker in aging. As such, several studies have focused on whether exercise influences health and aging through telomere biology. This systematic review examines the recent literature on the effect of physical activity on telomere length (TL) and/or telomerase activity as molecular markers of aging. METHODS: A focused search was performed in the databases PubMed and Web of Science for retrieving relevant articles over the past ten years. The search contained the following keywords: exercise, sport, physical activity, fitness, sedentary, physical inactivity, telomere, telomere length, t/s ratio, and telomerase. PRISMA guidelines for systematic reviews were observed.","source_id":"source_1","support_kind":"candidate_source_row"},{"study":"The benefits of regular aerobic exercise training on cerebrovascular function and cognition in older adults","year":2023,"doi":"10.1007/s00421-023-05154-y","url":"https://doi.org/10.1007/s00421-023-05154-y","population":"not extracted","intervention_or_exposure":"not extracted","comparator":"not extracted","endpoint":"not extracted","effect":"not extracted","risk_of_bias":"not appraised in public sidecar","directness":"primary","excerpt":"We compared the differences in cerebrovascular and cognitive function between 13 aerobic exercise trained, older adults and 13 age-, height- and sex-matched sedentary, untrained controls. We determined whether other measures accounted for differences in cerebrovascular and cognitive function between these groups and examined the associations between these functions. Participants undertook anthropometric, mood, cardiovascular, exercise performance, strength, cerebrovascular, and cognitive measurements, and a blood collection. Transcranial Doppler ultrasonography determined cerebrovascular responsiveness (CVR) to hypercapnia and cognitive stimuli. The trained group had a higher CVR to hypercapnia (80.3 ± 7.2 vs 35.1 ± 6.7%, P < 0.001), CVR to cognitive stimuli (30.1 ± 2.9 vs 17.8 ± 1.4%, P = 0.001) and total composite cognitive score (117 ± 2 vs 98 ± 4, P < 0.001) than the controls. These parameters no longer remained statistically different between the groups following adjustments for covariates. There were positive correlations between the total composite cognitive score and CVR to hypercapnia (r = 0.474, P = 0.014) and CVR to cognitive stimuli (r = 0.685, P < 0.001).","source_id":"source_2","support_kind":"candidate_source_row"},{"study":"Home-based high-intensity interval training improves cardiorespiratory fitness: a systematic review and meta-analysis","year":2023,"doi":"10.1186/s13102-023-00777-2","url":"https://doi.org/10.1186/s13102-023-00777-2","population":"not extracted","intervention_or_exposure":"not extracted","comparator":"not extracted","endpoint":"not extracted","effect":"not extracted","risk_of_bias":"not appraised in public sidecar","directness":"review-level","excerpt":"BACKGROUND: High-intensity interval training (HIIT) is an effective methods to improve maximal oxygen uptake. However, there is no definitive conclusion about the specific effectiveness of home-based HIIT. This review investigated the effects of home-based HIIT on cardiorespiratory fitness in a systematic review and meta-analysis. METHODS: Four electronic databases were searched (PubMed, Cochran database, Web of Science, Igaku Chuo Zasshi) for studies through March 25, 2023. Eligibility criteria include randomized controlled trials of home-based HIIT in adult people regardless disease or handicaped. Comparisons were made between non-exercise controls, laboratory-based HIIT, and moderate-intensity continuous training (MICT). The primary outcome was defined as cardiorespiratory fitness and the secondary outcome was defined as patient-reported outcomes. The standardized mean difference (SMD) with 95% confidence intervals (CIs) was calculated for quantitative indices. The random-effect model was used as the pooling method. RESULTS: Two hundred seven studies were identified, and 15 satisfied the inclusion criteria.","source_id":"source_3","support_kind":"candidate_source_row"},{"study":"Post‐exercise hot water immersion enhances haemodynamic and vascular benefits of exercise without further improving cardiorespiratory fitness, glucose, lipids or inflammation","year":2025,"doi":"10.1113/JP288873","url":"https://doi.org/10.1113/JP288873","population":"not extracted","intervention_or_exposure":"not extracted","comparator":"not extracted","endpoint":"not extracted","effect":"not extracted","risk_of_bias":"not appraised in public sidecar","directness":"primary","excerpt":"There is considerable overlap between the mechanisms underlying the health benefits of exercise training and heat therapy. However, it remains unclear whether combining heat therapy with exercise can enhance improvements in cardiovascular and metabolic health. The present study investigated whether post-exercise hot water immersion (EX+HWI) could augment improvements in cardiorespiratory fitness, cardiovascular and metabolic health compared to post-exercise thermoneutral water immersion (EX+TWI). Twenty-four physically inactive middle-aged adults (age: 58 ± 5 years; body mass index: 28 ± 3 kg m - 2 ; 13 females) were randomly allocated to 8 weeks of supervised EX+HWI (n = 12) or EX+TWI (n = 12). Moderate-intensity aerobic exercise (65-75% maximum heart rate) was performed for 30 min followed by 30 min of immersion at 40°C or 34°C, two to four times per week (total 24 sessions). Cardiorespiratory fitness, brachial artery flow-mediated dilatation, aortic pulse wave velocity, blood pressure and circulating lipids, glucose and inflammatory markers were assessed pre- and post-intervention.","source_id":"source_4","support_kind":"candidate_source_row"},{"study":"Effect of exercise training with laser phototherapy on homeostasis balance resistant to hypercoagulability in seniors with obesity: a randomized trial","year":2023,"doi":"10.1038/s41598-023-30550-x","url":"https://doi.org/10.1038/s41598-023-30550-x","population":"not extracted","intervention_or_exposure":"not extracted","comparator":"not extracted","endpoint":"not extracted","effect":"not extracted","risk_of_bias":"not appraised in public sidecar","directness":"primary","excerpt":"The prevalence of obesity has increased the incidence of obesity-related coagulation disorders. The current study assessed the effectiveness of combined aerobic exercise and laser phototherapy on the coagulation profile and body measurements in older adults with obesity compared to aerobic exercise alone, which has not been adequately explored. We included 76 obese people (50% women and 50% men) with a mean age of 67.83 ± 4.84 years and a body mass index of 34.55 ± 2.67 kg/m 2 . The participants were randomly assigned to the experimental group (which received aerobic training with laser phototherapy) and the control group (which received aerobic training alone) for three months. From the baseline to the final analysis, the absolute changes in specific coagulation biomarker levels (fibrinogen, fibrin fragment D, prothrombin time, Kaolin-Cephalin Coagulation Time), and contributing parameters (C-reactive protein and total cholesterol), were assessed. In comparison to the control group, the experimental group showed significant improvements in all evaluated measures (p < 0.001).","source_id":"source_5","support_kind":"candidate_source_row"}]},{"claim_id":"claim_4","claim":"The evidence profile contains no sources classified primarily as direct interventional hard-endpoint evidence, 20 adjacent clinical sources, and no sources classified primarily as mechanistic or model-system evidence, with 179 cross-study disagreements across the evidence base.","citation_support":[],"candidate_sources":[{"study":"Physical Activity on Telomere Length as a Biomarker for Aging: A Systematic Review","year":2022,"doi":"10.1186/s40798-022-00503-1","url":"https://doi.org/10.1186/s40798-022-00503-1","population":"not extracted","intervention_or_exposure":"not extracted","comparator":"not extracted","endpoint":"not extracted","effect":"not extracted","risk_of_bias":"not appraised in public sidecar","directness":"review-level","excerpt":"BACKGROUND: Overall life expectancy continues to rise, approaching 80 years of age in several developed countries. However, healthy life expectancy lags far behind, which has, in turn, contributed to increasing costs in healthcare. One way to improve health and attenuate the socio-economic impact of an aging population is to increase overall fitness through physical activity. Telomere attrition or shortening is a well-known molecular marker in aging. As such, several studies have focused on whether exercise influences health and aging through telomere biology. This systematic review examines the recent literature on the effect of physical activity on telomere length (TL) and/or telomerase activity as molecular markers of aging. METHODS: A focused search was performed in the databases PubMed and Web of Science for retrieving relevant articles over the past ten years. The search contained the following keywords: exercise, sport, physical activity, fitness, sedentary, physical inactivity, telomere, telomere length, t/s ratio, and telomerase. PRISMA guidelines for systematic reviews were observed.","source_id":"source_1","support_kind":"candidate_source_row"},{"study":"The benefits of regular aerobic exercise training on cerebrovascular function and cognition in older adults","year":2023,"doi":"10.1007/s00421-023-05154-y","url":"https://doi.org/10.1007/s00421-023-05154-y","population":"not extracted","intervention_or_exposure":"not extracted","comparator":"not extracted","endpoint":"not extracted","effect":"not extracted","risk_of_bias":"not appraised in public sidecar","directness":"primary","excerpt":"We compared the differences in cerebrovascular and cognitive function between 13 aerobic exercise trained, older adults and 13 age-, height- and sex-matched sedentary, untrained controls. We determined whether other measures accounted for differences in cerebrovascular and cognitive function between these groups and examined the associations between these functions. Participants undertook anthropometric, mood, cardiovascular, exercise performance, strength, cerebrovascular, and cognitive measurements, and a blood collection. Transcranial Doppler ultrasonography determined cerebrovascular responsiveness (CVR) to hypercapnia and cognitive stimuli. The trained group had a higher CVR to hypercapnia (80.3 ± 7.2 vs 35.1 ± 6.7%, P < 0.001), CVR to cognitive stimuli (30.1 ± 2.9 vs 17.8 ± 1.4%, P = 0.001) and total composite cognitive score (117 ± 2 vs 98 ± 4, P < 0.001) than the controls. These parameters no longer remained statistically different between the groups following adjustments for covariates. There were positive correlations between the total composite cognitive score and CVR to hypercapnia (r = 0.474, P = 0.014) and CVR to cognitive stimuli (r = 0.685, P < 0.001).","source_id":"source_2","support_kind":"candidate_source_row"},{"study":"Home-based high-intensity interval training improves cardiorespiratory fitness: a systematic review and meta-analysis","year":2023,"doi":"10.1186/s13102-023-00777-2","url":"https://doi.org/10.1186/s13102-023-00777-2","population":"not extracted","intervention_or_exposure":"not extracted","comparator":"not extracted","endpoint":"not extracted","effect":"not extracted","risk_of_bias":"not appraised in public sidecar","directness":"review-level","excerpt":"BACKGROUND: High-intensity interval training (HIIT) is an effective methods to improve maximal oxygen uptake. However, there is no definitive conclusion about the specific effectiveness of home-based HIIT. This review investigated the effects of home-based HIIT on cardiorespiratory fitness in a systematic review and meta-analysis. METHODS: Four electronic databases were searched (PubMed, Cochran database, Web of Science, Igaku Chuo Zasshi) for studies through March 25, 2023. Eligibility criteria include randomized controlled trials of home-based HIIT in adult people regardless disease or handicaped. Comparisons were made between non-exercise controls, laboratory-based HIIT, and moderate-intensity continuous training (MICT). The primary outcome was defined as cardiorespiratory fitness and the secondary outcome was defined as patient-reported outcomes. The standardized mean difference (SMD) with 95% confidence intervals (CIs) was calculated for quantitative indices. The random-effect model was used as the pooling method. RESULTS: Two hundred seven studies were identified, and 15 satisfied the inclusion criteria.","source_id":"source_3","support_kind":"candidate_source_row"},{"study":"Post‐exercise hot water immersion enhances haemodynamic and vascular benefits of exercise without further improving cardiorespiratory fitness, glucose, lipids or inflammation","year":2025,"doi":"10.1113/JP288873","url":"https://doi.org/10.1113/JP288873","population":"not extracted","intervention_or_exposure":"not extracted","comparator":"not extracted","endpoint":"not extracted","effect":"not extracted","risk_of_bias":"not appraised in public sidecar","directness":"primary","excerpt":"There is considerable overlap between the mechanisms underlying the health benefits of exercise training and heat therapy. However, it remains unclear whether combining heat therapy with exercise can enhance improvements in cardiovascular and metabolic health. The present study investigated whether post-exercise hot water immersion (EX+HWI) could augment improvements in cardiorespiratory fitness, cardiovascular and metabolic health compared to post-exercise thermoneutral water immersion (EX+TWI). Twenty-four physically inactive middle-aged adults (age: 58 ± 5 years; body mass index: 28 ± 3 kg m - 2 ; 13 females) were randomly allocated to 8 weeks of supervised EX+HWI (n = 12) or EX+TWI (n = 12). Moderate-intensity aerobic exercise (65-75% maximum heart rate) was performed for 30 min followed by 30 min of immersion at 40°C or 34°C, two to four times per week (total 24 sessions). Cardiorespiratory fitness, brachial artery flow-mediated dilatation, aortic pulse wave velocity, blood pressure and circulating lipids, glucose and inflammatory markers were assessed pre- and post-intervention.","source_id":"source_4","support_kind":"candidate_source_row"},{"study":"Effect of exercise training with laser phototherapy on homeostasis balance resistant to hypercoagulability in seniors with obesity: a randomized trial","year":2023,"doi":"10.1038/s41598-023-30550-x","url":"https://doi.org/10.1038/s41598-023-30550-x","population":"not extracted","intervention_or_exposure":"not extracted","comparator":"not extracted","endpoint":"not extracted","effect":"not extracted","risk_of_bias":"not appraised in public sidecar","directness":"primary","excerpt":"The prevalence of obesity has increased the incidence of obesity-related coagulation disorders. The current study assessed the effectiveness of combined aerobic exercise and laser phototherapy on the coagulation profile and body measurements in older adults with obesity compared to aerobic exercise alone, which has not been adequately explored. We included 76 obese people (50% women and 50% men) with a mean age of 67.83 ± 4.84 years and a body mass index of 34.55 ± 2.67 kg/m 2 . The participants were randomly assigned to the experimental group (which received aerobic training with laser phototherapy) and the control group (which received aerobic training alone) for three months. From the baseline to the final analysis, the absolute changes in specific coagulation biomarker levels (fibrinogen, fibrin fragment D, prothrombin time, Kaolin-Cephalin Coagulation Time), and contributing parameters (C-reactive protein and total cholesterol), were assessed. In comparison to the control group, the experimental group showed significant improvements in all evaluated measures (p < 0.001).","source_id":"source_5","support_kind":"candidate_source_row"}]},{"claim_id":"claim_5","claim":"Positive study-level signals are summarized in the muscle function, contextual adjacent evidence and cardiometabolic outcome classes, null signals in the contextual adjacent evidence, cardiometabolic and muscle function outcome classes, and negative signals in the cardiometabolic outcome class. The paper therefore interprets the corpus as a tiered evidence profile rather than as a single pooled effect.","citation_support":[],"candidate_sources":[{"study":"Physical Activity on Telomere Length as a Biomarker for Aging: A Systematic Review","year":2022,"doi":"10.1186/s40798-022-00503-1","url":"https://doi.org/10.1186/s40798-022-00503-1","population":"not extracted","intervention_or_exposure":"not extracted","comparator":"not extracted","endpoint":"not extracted","effect":"not extracted","risk_of_bias":"not appraised in public sidecar","directness":"review-level","excerpt":"BACKGROUND: Overall life expectancy continues to rise, approaching 80 years of age in several developed countries. However, healthy life expectancy lags far behind, which has, in turn, contributed to increasing costs in healthcare. One way to improve health and attenuate the socio-economic impact of an aging population is to increase overall fitness through physical activity. Telomere attrition or shortening is a well-known molecular marker in aging. As such, several studies have focused on whether exercise influences health and aging through telomere biology. This systematic review examines the recent literature on the effect of physical activity on telomere length (TL) and/or telomerase activity as molecular markers of aging. METHODS: A focused search was performed in the databases PubMed and Web of Science for retrieving relevant articles over the past ten years. The search contained the following keywords: exercise, sport, physical activity, fitness, sedentary, physical inactivity, telomere, telomere length, t/s ratio, and telomerase. PRISMA guidelines for systematic reviews were observed.","source_id":"source_1","support_kind":"candidate_source_row"},{"study":"The benefits of regular aerobic exercise training on cerebrovascular function and cognition in older adults","year":2023,"doi":"10.1007/s00421-023-05154-y","url":"https://doi.org/10.1007/s00421-023-05154-y","population":"not extracted","intervention_or_exposure":"not extracted","comparator":"not extracted","endpoint":"not extracted","effect":"not extracted","risk_of_bias":"not appraised in public sidecar","directness":"primary","excerpt":"We compared the differences in cerebrovascular and cognitive function between 13 aerobic exercise trained, older adults and 13 age-, height- and sex-matched sedentary, untrained controls. We determined whether other measures accounted for differences in cerebrovascular and cognitive function between these groups and examined the associations between these functions. Participants undertook anthropometric, mood, cardiovascular, exercise performance, strength, cerebrovascular, and cognitive measurements, and a blood collection. Transcranial Doppler ultrasonography determined cerebrovascular responsiveness (CVR) to hypercapnia and cognitive stimuli. The trained group had a higher CVR to hypercapnia (80.3 ± 7.2 vs 35.1 ± 6.7%, P < 0.001), CVR to cognitive stimuli (30.1 ± 2.9 vs 17.8 ± 1.4%, P = 0.001) and total composite cognitive score (117 ± 2 vs 98 ± 4, P < 0.001) than the controls. These parameters no longer remained statistically different between the groups following adjustments for covariates. There were positive correlations between the total composite cognitive score and CVR to hypercapnia (r = 0.474, P = 0.014) and CVR to cognitive stimuli (r = 0.685, P < 0.001).","source_id":"source_2","support_kind":"candidate_source_row"},{"study":"Home-based high-intensity interval training improves cardiorespiratory fitness: a systematic review and meta-analysis","year":2023,"doi":"10.1186/s13102-023-00777-2","url":"https://doi.org/10.1186/s13102-023-00777-2","population":"not extracted","intervention_or_exposure":"not extracted","comparator":"not extracted","endpoint":"not extracted","effect":"not extracted","risk_of_bias":"not appraised in public sidecar","directness":"review-level","excerpt":"BACKGROUND: High-intensity interval training (HIIT) is an effective methods to improve maximal oxygen uptake. However, there is no definitive conclusion about the specific effectiveness of home-based HIIT. This review investigated the effects of home-based HIIT on cardiorespiratory fitness in a systematic review and meta-analysis. METHODS: Four electronic databases were searched (PubMed, Cochran database, Web of Science, Igaku Chuo Zasshi) for studies through March 25, 2023. Eligibility criteria include randomized controlled trials of home-based HIIT in adult people regardless disease or handicaped. Comparisons were made between non-exercise controls, laboratory-based HIIT, and moderate-intensity continuous training (MICT). The primary outcome was defined as cardiorespiratory fitness and the secondary outcome was defined as patient-reported outcomes. The standardized mean difference (SMD) with 95% confidence intervals (CIs) was calculated for quantitative indices. The random-effect model was used as the pooling method. RESULTS: Two hundred seven studies were identified, and 15 satisfied the inclusion criteria.","source_id":"source_3","support_kind":"candidate_source_row"},{"study":"Post‐exercise hot water immersion enhances haemodynamic and vascular benefits of exercise without further improving cardiorespiratory fitness, glucose, lipids or inflammation","year":2025,"doi":"10.1113/JP288873","url":"https://doi.org/10.1113/JP288873","population":"not extracted","intervention_or_exposure":"not extracted","comparator":"not extracted","endpoint":"not extracted","effect":"not extracted","risk_of_bias":"not appraised in public sidecar","directness":"primary","excerpt":"There is considerable overlap between the mechanisms underlying the health benefits of exercise training and heat therapy. However, it remains unclear whether combining heat therapy with exercise can enhance improvements in cardiovascular and metabolic health. The present study investigated whether post-exercise hot water immersion (EX+HWI) could augment improvements in cardiorespiratory fitness, cardiovascular and metabolic health compared to post-exercise thermoneutral water immersion (EX+TWI). Twenty-four physically inactive middle-aged adults (age: 58 ± 5 years; body mass index: 28 ± 3 kg m - 2 ; 13 females) were randomly allocated to 8 weeks of supervised EX+HWI (n = 12) or EX+TWI (n = 12). Moderate-intensity aerobic exercise (65-75% maximum heart rate) was performed for 30 min followed by 30 min of immersion at 40°C or 34°C, two to four times per week (total 24 sessions). Cardiorespiratory fitness, brachial artery flow-mediated dilatation, aortic pulse wave velocity, blood pressure and circulating lipids, glucose and inflammatory markers were assessed pre- and post-intervention.","source_id":"source_4","support_kind":"candidate_source_row"},{"study":"Effect of exercise training with laser phototherapy on homeostasis balance resistant to hypercoagulability in seniors with obesity: a randomized trial","year":2023,"doi":"10.1038/s41598-023-30550-x","url":"https://doi.org/10.1038/s41598-023-30550-x","population":"not extracted","intervention_or_exposure":"not extracted","comparator":"not extracted","endpoint":"not extracted","effect":"not extracted","risk_of_bias":"not appraised in public sidecar","directness":"primary","excerpt":"The prevalence of obesity has increased the incidence of obesity-related coagulation disorders. The current study assessed the effectiveness of combined aerobic exercise and laser phototherapy on the coagulation profile and body measurements in older adults with obesity compared to aerobic exercise alone, which has not been adequately explored. We included 76 obese people (50% women and 50% men) with a mean age of 67.83 ± 4.84 years and a body mass index of 34.55 ± 2.67 kg/m 2 . The participants were randomly assigned to the experimental group (which received aerobic training with laser phototherapy) and the control group (which received aerobic training alone) for three months. From the baseline to the final analysis, the absolute changes in specific coagulation biomarker levels (fibrinogen, fibrin fragment D, prothrombin time, Kaolin-Cephalin Coagulation Time), and contributing parameters (C-reactive protein and total cholesterol), were assessed. In comparison to the control group, the experimental group showed significant improvements in all evaluated measures (p < 0.001).","source_id":"source_5","support_kind":"candidate_source_row"}]},{"claim_id":"claim_6","claim":"The conclusion is that Aerobic exercise should be treated as a bounded geroscience hypothesis: the retained clinical and adjacent evidence profile defines the scope for targeted testing, while mixed and null findings limit any unqualified anti-aging claim.","citation_support":[],"candidate_sources":[{"study":"Physical Activity on Telomere Length as a Biomarker for Aging: A Systematic Review","year":2022,"doi":"10.1186/s40798-022-00503-1","url":"https://doi.org/10.1186/s40798-022-00503-1","population":"not extracted","intervention_or_exposure":"not extracted","comparator":"not extracted","endpoint":"not extracted","effect":"not extracted","risk_of_bias":"not appraised in public sidecar","directness":"review-level","excerpt":"BACKGROUND: Overall life expectancy continues to rise, approaching 80 years of age in several developed countries. However, healthy life expectancy lags far behind, which has, in turn, contributed to increasing costs in healthcare. One way to improve health and attenuate the socio-economic impact of an aging population is to increase overall fitness through physical activity. Telomere attrition or shortening is a well-known molecular marker in aging. As such, several studies have focused on whether exercise influences health and aging through telomere biology. This systematic review examines the recent literature on the effect of physical activity on telomere length (TL) and/or telomerase activity as molecular markers of aging. METHODS: A focused search was performed in the databases PubMed and Web of Science for retrieving relevant articles over the past ten years. The search contained the following keywords: exercise, sport, physical activity, fitness, sedentary, physical inactivity, telomere, telomere length, t/s ratio, and telomerase. PRISMA guidelines for systematic reviews were observed.","source_id":"source_1","support_kind":"candidate_source_row"},{"study":"The benefits of regular aerobic exercise training on cerebrovascular function and cognition in older adults","year":2023,"doi":"10.1007/s00421-023-05154-y","url":"https://doi.org/10.1007/s00421-023-05154-y","population":"not extracted","intervention_or_exposure":"not extracted","comparator":"not extracted","endpoint":"not extracted","effect":"not extracted","risk_of_bias":"not appraised in public sidecar","directness":"primary","excerpt":"We compared the differences in cerebrovascular and cognitive function between 13 aerobic exercise trained, older adults and 13 age-, height- and sex-matched sedentary, untrained controls. We determined whether other measures accounted for differences in cerebrovascular and cognitive function between these groups and examined the associations between these functions. Participants undertook anthropometric, mood, cardiovascular, exercise performance, strength, cerebrovascular, and cognitive measurements, and a blood collection. Transcranial Doppler ultrasonography determined cerebrovascular responsiveness (CVR) to hypercapnia and cognitive stimuli. The trained group had a higher CVR to hypercapnia (80.3 ± 7.2 vs 35.1 ± 6.7%, P < 0.001), CVR to cognitive stimuli (30.1 ± 2.9 vs 17.8 ± 1.4%, P = 0.001) and total composite cognitive score (117 ± 2 vs 98 ± 4, P < 0.001) than the controls. These parameters no longer remained statistically different between the groups following adjustments for covariates. There were positive correlations between the total composite cognitive score and CVR to hypercapnia (r = 0.474, P = 0.014) and CVR to cognitive stimuli (r = 0.685, P < 0.001).","source_id":"source_2","support_kind":"candidate_source_row"},{"study":"Home-based high-intensity interval training improves cardiorespiratory fitness: a systematic review and meta-analysis","year":2023,"doi":"10.1186/s13102-023-00777-2","url":"https://doi.org/10.1186/s13102-023-00777-2","population":"not extracted","intervention_or_exposure":"not extracted","comparator":"not extracted","endpoint":"not extracted","effect":"not extracted","risk_of_bias":"not appraised in public sidecar","directness":"review-level","excerpt":"BACKGROUND: High-intensity interval training (HIIT) is an effective methods to improve maximal oxygen uptake. However, there is no definitive conclusion about the specific effectiveness of home-based HIIT. This review investigated the effects of home-based HIIT on cardiorespiratory fitness in a systematic review and meta-analysis. METHODS: Four electronic databases were searched (PubMed, Cochran database, Web of Science, Igaku Chuo Zasshi) for studies through March 25, 2023. Eligibility criteria include randomized controlled trials of home-based HIIT in adult people regardless disease or handicaped. Comparisons were made between non-exercise controls, laboratory-based HIIT, and moderate-intensity continuous training (MICT). The primary outcome was defined as cardiorespiratory fitness and the secondary outcome was defined as patient-reported outcomes. The standardized mean difference (SMD) with 95% confidence intervals (CIs) was calculated for quantitative indices. The random-effect model was used as the pooling method. RESULTS: Two hundred seven studies were identified, and 15 satisfied the inclusion criteria.","source_id":"source_3","support_kind":"candidate_source_row"},{"study":"Post‐exercise hot water immersion enhances haemodynamic and vascular benefits of exercise without further improving cardiorespiratory fitness, glucose, lipids or inflammation","year":2025,"doi":"10.1113/JP288873","url":"https://doi.org/10.1113/JP288873","population":"not extracted","intervention_or_exposure":"not extracted","comparator":"not extracted","endpoint":"not extracted","effect":"not extracted","risk_of_bias":"not appraised in public sidecar","directness":"primary","excerpt":"There is considerable overlap between the mechanisms underlying the health benefits of exercise training and heat therapy. However, it remains unclear whether combining heat therapy with exercise can enhance improvements in cardiovascular and metabolic health. The present study investigated whether post-exercise hot water immersion (EX+HWI) could augment improvements in cardiorespiratory fitness, cardiovascular and metabolic health compared to post-exercise thermoneutral water immersion (EX+TWI). Twenty-four physically inactive middle-aged adults (age: 58 ± 5 years; body mass index: 28 ± 3 kg m - 2 ; 13 females) were randomly allocated to 8 weeks of supervised EX+HWI (n = 12) or EX+TWI (n = 12). Moderate-intensity aerobic exercise (65-75% maximum heart rate) was performed for 30 min followed by 30 min of immersion at 40°C or 34°C, two to four times per week (total 24 sessions). Cardiorespiratory fitness, brachial artery flow-mediated dilatation, aortic pulse wave velocity, blood pressure and circulating lipids, glucose and inflammatory markers were assessed pre- and post-intervention.","source_id":"source_4","support_kind":"candidate_source_row"},{"study":"Effect of exercise training with laser phototherapy on homeostasis balance resistant to hypercoagulability in seniors with obesity: a randomized trial","year":2023,"doi":"10.1038/s41598-023-30550-x","url":"https://doi.org/10.1038/s41598-023-30550-x","population":"not extracted","intervention_or_exposure":"not extracted","comparator":"not extracted","endpoint":"not extracted","effect":"not extracted","risk_of_bias":"not appraised in public sidecar","directness":"primary","excerpt":"The prevalence of obesity has increased the incidence of obesity-related coagulation disorders. The current study assessed the effectiveness of combined aerobic exercise and laser phototherapy on the coagulation profile and body measurements in older adults with obesity compared to aerobic exercise alone, which has not been adequately explored. We included 76 obese people (50% women and 50% men) with a mean age of 67.83 ± 4.84 years and a body mass index of 34.55 ± 2.67 kg/m 2 . The participants were randomly assigned to the experimental group (which received aerobic training with laser phototherapy) and the control group (which received aerobic training alone) for three months. From the baseline to the final analysis, the absolute changes in specific coagulation biomarker levels (fibrinogen, fibrin fragment D, prothrombin time, Kaolin-Cephalin Coagulation Time), and contributing parameters (C-reactive protein and total cholesterol), were assessed. In comparison to the control group, the experimental group showed significant improvements in all evaluated measures (p < 0.001).","source_id":"source_5","support_kind":"candidate_source_row"}]},{"claim_id":"claim_7","claim":"The geroscience hypothesis offers a useful lens on why Aerobic exercise has become a recurring reference point in this debate. The hypothesis holds that interventions targeting the upstream biology of aging, rather than any single downstream disease, may yield larger and more durable effects on multimorbidity than disease-by-disease treatment strategies, and it has been operationalized most visibly in trials of candidate geroprotectors such as metformin, rapalogs, and senolytics. Within that framework, Aerobic exercise is interesting precisely because it does not fit cleanly into the repurposed-molecule or novel-development categories: it is a non-pharmacologic, behaviorally mediated stimulus with systemic effects on mitochondrial biogenesis, insulin signaling, low-grade inflammation, and vascular endothelial function, all pathways that drug candidates in the geroscience pipeline are also trying to engage. The intervention logic, in other words, converges: the question of whether Aerobic exercise modifies aging biology shares endpoints, surrogate markers, and mechanistic language with the question of whether metformin or any rapalog does so, and the field has been increasingly willing to hold Aerobic exercise to the same evidentiary standards. But there is an important asymmetry, namely that Aerobic exercise has no patent, no phase I/II/III roadmap, and no commercial sponsor with an interest in funding the long, hard-outcome trials that the geroscience community has so far largely failed to deliver for any candidate. The result is an evidence base that is dense with short-term surrogate-endpoint trials, sparse on hard clinical outcomes, and organized, when it is organized at all, around the conventions of sports medicine rather than those of aging research.","citation_support":[],"candidate_sources":[{"study":"Physical Activity on Telomere Length as a Biomarker for Aging: A Systematic Review","year":2022,"doi":"10.1186/s40798-022-00503-1","url":"https://doi.org/10.1186/s40798-022-00503-1","population":"not extracted","intervention_or_exposure":"not extracted","comparator":"not extracted","endpoint":"not extracted","effect":"not extracted","risk_of_bias":"not appraised in public sidecar","directness":"review-level","excerpt":"BACKGROUND: Overall life expectancy continues to rise, approaching 80 years of age in several developed countries. However, healthy life expectancy lags far behind, which has, in turn, contributed to increasing costs in healthcare. One way to improve health and attenuate the socio-economic impact of an aging population is to increase overall fitness through physical activity. Telomere attrition or shortening is a well-known molecular marker in aging. As such, several studies have focused on whether exercise influences health and aging through telomere biology. This systematic review examines the recent literature on the effect of physical activity on telomere length (TL) and/or telomerase activity as molecular markers of aging. METHODS: A focused search was performed in the databases PubMed and Web of Science for retrieving relevant articles over the past ten years. The search contained the following keywords: exercise, sport, physical activity, fitness, sedentary, physical inactivity, telomere, telomere length, t/s ratio, and telomerase. PRISMA guidelines for systematic reviews were observed.","source_id":"source_1","support_kind":"candidate_source_row"},{"study":"The benefits of regular aerobic exercise training on cerebrovascular function and cognition in older adults","year":2023,"doi":"10.1007/s00421-023-05154-y","url":"https://doi.org/10.1007/s00421-023-05154-y","population":"not extracted","intervention_or_exposure":"not extracted","comparator":"not extracted","endpoint":"not extracted","effect":"not extracted","risk_of_bias":"not appraised in public sidecar","directness":"primary","excerpt":"We compared the differences in cerebrovascular and cognitive function between 13 aerobic exercise trained, older adults and 13 age-, height- and sex-matched sedentary, untrained controls. We determined whether other measures accounted for differences in cerebrovascular and cognitive function between these groups and examined the associations between these functions. Participants undertook anthropometric, mood, cardiovascular, exercise performance, strength, cerebrovascular, and cognitive measurements, and a blood collection. Transcranial Doppler ultrasonography determined cerebrovascular responsiveness (CVR) to hypercapnia and cognitive stimuli. The trained group had a higher CVR to hypercapnia (80.3 ± 7.2 vs 35.1 ± 6.7%, P < 0.001), CVR to cognitive stimuli (30.1 ± 2.9 vs 17.8 ± 1.4%, P = 0.001) and total composite cognitive score (117 ± 2 vs 98 ± 4, P < 0.001) than the controls. These parameters no longer remained statistically different between the groups following adjustments for covariates. There were positive correlations between the total composite cognitive score and CVR to hypercapnia (r = 0.474, P = 0.014) and CVR to cognitive stimuli (r = 0.685, P < 0.001).","source_id":"source_2","support_kind":"candidate_source_row"},{"study":"Home-based high-intensity interval training improves cardiorespiratory fitness: a systematic review and meta-analysis","year":2023,"doi":"10.1186/s13102-023-00777-2","url":"https://doi.org/10.1186/s13102-023-00777-2","population":"not extracted","intervention_or_exposure":"not extracted","comparator":"not extracted","endpoint":"not extracted","effect":"not extracted","risk_of_bias":"not appraised in public sidecar","directness":"review-level","excerpt":"BACKGROUND: High-intensity interval training (HIIT) is an effective methods to improve maximal oxygen uptake. However, there is no definitive conclusion about the specific effectiveness of home-based HIIT. This review investigated the effects of home-based HIIT on cardiorespiratory fitness in a systematic review and meta-analysis. METHODS: Four electronic databases were searched (PubMed, Cochran database, Web of Science, Igaku Chuo Zasshi) for studies through March 25, 2023. Eligibility criteria include randomized controlled trials of home-based HIIT in adult people regardless disease or handicaped. Comparisons were made between non-exercise controls, laboratory-based HIIT, and moderate-intensity continuous training (MICT). The primary outcome was defined as cardiorespiratory fitness and the secondary outcome was defined as patient-reported outcomes. The standardized mean difference (SMD) with 95% confidence intervals (CIs) was calculated for quantitative indices. The random-effect model was used as the pooling method. RESULTS: Two hundred seven studies were identified, and 15 satisfied the inclusion criteria.","source_id":"source_3","support_kind":"candidate_source_row"},{"study":"Post‐exercise hot water immersion enhances haemodynamic and vascular benefits of exercise without further improving cardiorespiratory fitness, glucose, lipids or inflammation","year":2025,"doi":"10.1113/JP288873","url":"https://doi.org/10.1113/JP288873","population":"not extracted","intervention_or_exposure":"not extracted","comparator":"not extracted","endpoint":"not extracted","effect":"not extracted","risk_of_bias":"not appraised in public sidecar","directness":"primary","excerpt":"There is considerable overlap between the mechanisms underlying the health benefits of exercise training and heat therapy. However, it remains unclear whether combining heat therapy with exercise can enhance improvements in cardiovascular and metabolic health. The present study investigated whether post-exercise hot water immersion (EX+HWI) could augment improvements in cardiorespiratory fitness, cardiovascular and metabolic health compared to post-exercise thermoneutral water immersion (EX+TWI). Twenty-four physically inactive middle-aged adults (age: 58 ± 5 years; body mass index: 28 ± 3 kg m - 2 ; 13 females) were randomly allocated to 8 weeks of supervised EX+HWI (n = 12) or EX+TWI (n = 12). Moderate-intensity aerobic exercise (65-75% maximum heart rate) was performed for 30 min followed by 30 min of immersion at 40°C or 34°C, two to four times per week (total 24 sessions). Cardiorespiratory fitness, brachial artery flow-mediated dilatation, aortic pulse wave velocity, blood pressure and circulating lipids, glucose and inflammatory markers were assessed pre- and post-intervention.","source_id":"source_4","support_kind":"candidate_source_row"},{"study":"Effect of exercise training with laser phototherapy on homeostasis balance resistant to hypercoagulability in seniors with obesity: a randomized trial","year":2023,"doi":"10.1038/s41598-023-30550-x","url":"https://doi.org/10.1038/s41598-023-30550-x","population":"not extracted","intervention_or_exposure":"not extracted","comparator":"not extracted","endpoint":"not extracted","effect":"not extracted","risk_of_bias":"not appraised in public sidecar","directness":"primary","excerpt":"The prevalence of obesity has increased the incidence of obesity-related coagulation disorders. The current study assessed the effectiveness of combined aerobic exercise and laser phototherapy on the coagulation profile and body measurements in older adults with obesity compared to aerobic exercise alone, which has not been adequately explored. We included 76 obese people (50% women and 50% men) with a mean age of 67.83 ± 4.84 years and a body mass index of 34.55 ± 2.67 kg/m 2 . The participants were randomly assigned to the experimental group (which received aerobic training with laser phototherapy) and the control group (which received aerobic training alone) for three months. From the baseline to the final analysis, the absolute changes in specific coagulation biomarker levels (fibrinogen, fibrin fragment D, prothrombin time, Kaolin-Cephalin Coagulation Time), and contributing parameters (C-reactive protein and total cholesterol), were assessed. In comparison to the control group, the experimental group showed significant improvements in all evaluated measures (p < 0.001).","source_id":"source_5","support_kind":"candidate_source_row"}]},{"claim_id":"claim_8","claim":"Several unresolved questions prevent any simple endorsement of Aerobic exercise as a geroscience intervention, and the sources themselves make those questions visible. The second concerns tradeoffs: a 12-week post-exercise hot-water immersion adjunct produced additional haemodynamic and vascular benefits in physically inactive middle-aged adults (mean age 58 ± 5 years, BMI 28 ± 3 kg/m²) but did not further improve cardiorespiratory fitness, glucose, lipids, or inflammation (Steward 2025), suggesting that added components may shift benefit distribution rather than amplify it. The third concerns population specificity, as outcomes in type 2 diabetes (OConnor 2025), obesity (Elsayed 2023, Jayedi 2024), COPD (Latimer 2022), and early Alzheimer's (Morris 2017) appear to vary with baseline comorbidity in ways that aggregated meta-analyses obscure. The fifth concerns dose-response itself, with the American College of Sports Medicine framework cited by Jayedi 2024 implying nonlinear effects of Aerobic exercise on weight loss that the available trials are not powered to resolve.","citation_support":[],"candidate_sources":[{"study":"Physical Activity on Telomere Length as a Biomarker for Aging: A Systematic Review","year":2022,"doi":"10.1186/s40798-022-00503-1","url":"https://doi.org/10.1186/s40798-022-00503-1","population":"not extracted","intervention_or_exposure":"not extracted","comparator":"not extracted","endpoint":"not extracted","effect":"not extracted","risk_of_bias":"not appraised in public sidecar","directness":"review-level","excerpt":"BACKGROUND: Overall life expectancy continues to rise, approaching 80 years of age in several developed countries. However, healthy life expectancy lags far behind, which has, in turn, contributed to increasing costs in healthcare. One way to improve health and attenuate the socio-economic impact of an aging population is to increase overall fitness through physical activity. Telomere attrition or shortening is a well-known molecular marker in aging. As such, several studies have focused on whether exercise influences health and aging through telomere biology. This systematic review examines the recent literature on the effect of physical activity on telomere length (TL) and/or telomerase activity as molecular markers of aging. METHODS: A focused search was performed in the databases PubMed and Web of Science for retrieving relevant articles over the past ten years. The search contained the following keywords: exercise, sport, physical activity, fitness, sedentary, physical inactivity, telomere, telomere length, t/s ratio, and telomerase. PRISMA guidelines for systematic reviews were observed.","source_id":"source_1","support_kind":"candidate_source_row"},{"study":"The benefits of regular aerobic exercise training on cerebrovascular function and cognition in older adults","year":2023,"doi":"10.1007/s00421-023-05154-y","url":"https://doi.org/10.1007/s00421-023-05154-y","population":"not extracted","intervention_or_exposure":"not extracted","comparator":"not extracted","endpoint":"not extracted","effect":"not extracted","risk_of_bias":"not appraised in public sidecar","directness":"primary","excerpt":"We compared the differences in cerebrovascular and cognitive function between 13 aerobic exercise trained, older adults and 13 age-, height- and sex-matched sedentary, untrained controls. We determined whether other measures accounted for differences in cerebrovascular and cognitive function between these groups and examined the associations between these functions. Participants undertook anthropometric, mood, cardiovascular, exercise performance, strength, cerebrovascular, and cognitive measurements, and a blood collection. Transcranial Doppler ultrasonography determined cerebrovascular responsiveness (CVR) to hypercapnia and cognitive stimuli. The trained group had a higher CVR to hypercapnia (80.3 ± 7.2 vs 35.1 ± 6.7%, P < 0.001), CVR to cognitive stimuli (30.1 ± 2.9 vs 17.8 ± 1.4%, P = 0.001) and total composite cognitive score (117 ± 2 vs 98 ± 4, P < 0.001) than the controls. These parameters no longer remained statistically different between the groups following adjustments for covariates. There were positive correlations between the total composite cognitive score and CVR to hypercapnia (r = 0.474, P = 0.014) and CVR to cognitive stimuli (r = 0.685, P < 0.001).","source_id":"source_2","support_kind":"candidate_source_row"},{"study":"Home-based high-intensity interval training improves cardiorespiratory fitness: a systematic review and meta-analysis","year":2023,"doi":"10.1186/s13102-023-00777-2","url":"https://doi.org/10.1186/s13102-023-00777-2","population":"not extracted","intervention_or_exposure":"not extracted","comparator":"not extracted","endpoint":"not extracted","effect":"not extracted","risk_of_bias":"not appraised in public sidecar","directness":"review-level","excerpt":"BACKGROUND: High-intensity interval training (HIIT) is an effective methods to improve maximal oxygen uptake. However, there is no definitive conclusion about the specific effectiveness of home-based HIIT. This review investigated the effects of home-based HIIT on cardiorespiratory fitness in a systematic review and meta-analysis. METHODS: Four electronic databases were searched (PubMed, Cochran database, Web of Science, Igaku Chuo Zasshi) for studies through March 25, 2023. Eligibility criteria include randomized controlled trials of home-based HIIT in adult people regardless disease or handicaped. Comparisons were made between non-exercise controls, laboratory-based HIIT, and moderate-intensity continuous training (MICT). The primary outcome was defined as cardiorespiratory fitness and the secondary outcome was defined as patient-reported outcomes. The standardized mean difference (SMD) with 95% confidence intervals (CIs) was calculated for quantitative indices. The random-effect model was used as the pooling method. RESULTS: Two hundred seven studies were identified, and 15 satisfied the inclusion criteria.","source_id":"source_3","support_kind":"candidate_source_row"},{"study":"Post‐exercise hot water immersion enhances haemodynamic and vascular benefits of exercise without further improving cardiorespiratory fitness, glucose, lipids or inflammation","year":2025,"doi":"10.1113/JP288873","url":"https://doi.org/10.1113/JP288873","population":"not extracted","intervention_or_exposure":"not extracted","comparator":"not extracted","endpoint":"not extracted","effect":"not extracted","risk_of_bias":"not appraised in public sidecar","directness":"primary","excerpt":"There is considerable overlap between the mechanisms underlying the health benefits of exercise training and heat therapy. However, it remains unclear whether combining heat therapy with exercise can enhance improvements in cardiovascular and metabolic health. The present study investigated whether post-exercise hot water immersion (EX+HWI) could augment improvements in cardiorespiratory fitness, cardiovascular and metabolic health compared to post-exercise thermoneutral water immersion (EX+TWI). Twenty-four physically inactive middle-aged adults (age: 58 ± 5 years; body mass index: 28 ± 3 kg m - 2 ; 13 females) were randomly allocated to 8 weeks of supervised EX+HWI (n = 12) or EX+TWI (n = 12). Moderate-intensity aerobic exercise (65-75% maximum heart rate) was performed for 30 min followed by 30 min of immersion at 40°C or 34°C, two to four times per week (total 24 sessions). Cardiorespiratory fitness, brachial artery flow-mediated dilatation, aortic pulse wave velocity, blood pressure and circulating lipids, glucose and inflammatory markers were assessed pre- and post-intervention.","source_id":"source_4","support_kind":"candidate_source_row"},{"study":"Effect of exercise training with laser phototherapy on homeostasis balance resistant to hypercoagulability in seniors with obesity: a randomized trial","year":2023,"doi":"10.1038/s41598-023-30550-x","url":"https://doi.org/10.1038/s41598-023-30550-x","population":"not extracted","intervention_or_exposure":"not extracted","comparator":"not extracted","endpoint":"not extracted","effect":"not extracted","risk_of_bias":"not appraised in public sidecar","directness":"primary","excerpt":"The prevalence of obesity has increased the incidence of obesity-related coagulation disorders. The current study assessed the effectiveness of combined aerobic exercise and laser phototherapy on the coagulation profile and body measurements in older adults with obesity compared to aerobic exercise alone, which has not been adequately explored. We included 76 obese people (50% women and 50% men) with a mean age of 67.83 ± 4.84 years and a body mass index of 34.55 ± 2.67 kg/m 2 . The participants were randomly assigned to the experimental group (which received aerobic training with laser phototherapy) and the control group (which received aerobic training alone) for three months. From the baseline to the final analysis, the absolute changes in specific coagulation biomarker levels (fibrinogen, fibrin fragment D, prothrombin time, Kaolin-Cephalin Coagulation Time), and contributing parameters (C-reactive protein and total cholesterol), were assessed. In comparison to the control group, the experimental group showed significant improvements in all evaluated measures (p < 0.001).","source_id":"source_5","support_kind":"candidate_source_row"}]},{"claim_id":"claim_9","claim":"The contribution of this synthesis is to take the apparently simple question, does Aerobic exercise modify aging-relevant outcomes, and to decompose it into the smaller, more answerable questions that the sources can actually bear. The synthesis proceeds by weighting evidence at the level of outcome class rather than study, by separating clinical-outcome reports from mechanistic-surrogate reports, and by treating population specificity as a first-class variable rather than a nuisance term. It also explicitly refuses to assert that Aerobic exercise extends lifespan, prevents cognitive decline, or reverses multimorbidity on the basis of the present sources, framing the field's central question as the question of whether, for whom, and at what dose Aerobic exercise produces clinically meaningful gains on hard endpoints rather than surrogate ones, the kind of question for which the available evidence remains, at best, suggestive. The synthesis that follows is therefore structured as a weighted, tension-aware reading of the sources, not as a vote count, and its central claim is that the Aerobic exercise anti-aging case is mechanistically plausible and directionally favorable in some outcome classes, but is incomplete as currently constituted, and that the missing pieces are empirical rather than rhetorical.","citation_support":[],"candidate_sources":[{"study":"Physical Activity on Telomere Length as a Biomarker for Aging: A Systematic Review","year":2022,"doi":"10.1186/s40798-022-00503-1","url":"https://doi.org/10.1186/s40798-022-00503-1","population":"not extracted","intervention_or_exposure":"not extracted","comparator":"not extracted","endpoint":"not extracted","effect":"not extracted","risk_of_bias":"not appraised in public sidecar","directness":"review-level","excerpt":"BACKGROUND: Overall life expectancy continues to rise, approaching 80 years of age in several developed countries. However, healthy life expectancy lags far behind, which has, in turn, contributed to increasing costs in healthcare. One way to improve health and attenuate the socio-economic impact of an aging population is to increase overall fitness through physical activity. Telomere attrition or shortening is a well-known molecular marker in aging. As such, several studies have focused on whether exercise influences health and aging through telomere biology. This systematic review examines the recent literature on the effect of physical activity on telomere length (TL) and/or telomerase activity as molecular markers of aging. METHODS: A focused search was performed in the databases PubMed and Web of Science for retrieving relevant articles over the past ten years. The search contained the following keywords: exercise, sport, physical activity, fitness, sedentary, physical inactivity, telomere, telomere length, t/s ratio, and telomerase. PRISMA guidelines for systematic reviews were observed.","source_id":"source_1","support_kind":"candidate_source_row"},{"study":"The benefits of regular aerobic exercise training on cerebrovascular function and cognition in older adults","year":2023,"doi":"10.1007/s00421-023-05154-y","url":"https://doi.org/10.1007/s00421-023-05154-y","population":"not extracted","intervention_or_exposure":"not extracted","comparator":"not extracted","endpoint":"not extracted","effect":"not extracted","risk_of_bias":"not appraised in public sidecar","directness":"primary","excerpt":"We compared the differences in cerebrovascular and cognitive function between 13 aerobic exercise trained, older adults and 13 age-, height- and sex-matched sedentary, untrained controls. We determined whether other measures accounted for differences in cerebrovascular and cognitive function between these groups and examined the associations between these functions. Participants undertook anthropometric, mood, cardiovascular, exercise performance, strength, cerebrovascular, and cognitive measurements, and a blood collection. Transcranial Doppler ultrasonography determined cerebrovascular responsiveness (CVR) to hypercapnia and cognitive stimuli. The trained group had a higher CVR to hypercapnia (80.3 ± 7.2 vs 35.1 ± 6.7%, P < 0.001), CVR to cognitive stimuli (30.1 ± 2.9 vs 17.8 ± 1.4%, P = 0.001) and total composite cognitive score (117 ± 2 vs 98 ± 4, P < 0.001) than the controls. These parameters no longer remained statistically different between the groups following adjustments for covariates. There were positive correlations between the total composite cognitive score and CVR to hypercapnia (r = 0.474, P = 0.014) and CVR to cognitive stimuli (r = 0.685, P < 0.001).","source_id":"source_2","support_kind":"candidate_source_row"},{"study":"Home-based high-intensity interval training improves cardiorespiratory fitness: a systematic review and meta-analysis","year":2023,"doi":"10.1186/s13102-023-00777-2","url":"https://doi.org/10.1186/s13102-023-00777-2","population":"not extracted","intervention_or_exposure":"not extracted","comparator":"not extracted","endpoint":"not extracted","effect":"not extracted","risk_of_bias":"not appraised in public sidecar","directness":"review-level","excerpt":"BACKGROUND: High-intensity interval training (HIIT) is an effective methods to improve maximal oxygen uptake. However, there is no definitive conclusion about the specific effectiveness of home-based HIIT. This review investigated the effects of home-based HIIT on cardiorespiratory fitness in a systematic review and meta-analysis. METHODS: Four electronic databases were searched (PubMed, Cochran database, Web of Science, Igaku Chuo Zasshi) for studies through March 25, 2023. Eligibility criteria include randomized controlled trials of home-based HIIT in adult people regardless disease or handicaped. Comparisons were made between non-exercise controls, laboratory-based HIIT, and moderate-intensity continuous training (MICT). The primary outcome was defined as cardiorespiratory fitness and the secondary outcome was defined as patient-reported outcomes. The standardized mean difference (SMD) with 95% confidence intervals (CIs) was calculated for quantitative indices. The random-effect model was used as the pooling method. RESULTS: Two hundred seven studies were identified, and 15 satisfied the inclusion criteria.","source_id":"source_3","support_kind":"candidate_source_row"},{"study":"Post‐exercise hot water immersion enhances haemodynamic and vascular benefits of exercise without further improving cardiorespiratory fitness, glucose, lipids or inflammation","year":2025,"doi":"10.1113/JP288873","url":"https://doi.org/10.1113/JP288873","population":"not extracted","intervention_or_exposure":"not extracted","comparator":"not extracted","endpoint":"not extracted","effect":"not extracted","risk_of_bias":"not appraised in public sidecar","directness":"primary","excerpt":"There is considerable overlap between the mechanisms underlying the health benefits of exercise training and heat therapy. However, it remains unclear whether combining heat therapy with exercise can enhance improvements in cardiovascular and metabolic health. The present study investigated whether post-exercise hot water immersion (EX+HWI) could augment improvements in cardiorespiratory fitness, cardiovascular and metabolic health compared to post-exercise thermoneutral water immersion (EX+TWI). Twenty-four physically inactive middle-aged adults (age: 58 ± 5 years; body mass index: 28 ± 3 kg m - 2 ; 13 females) were randomly allocated to 8 weeks of supervised EX+HWI (n = 12) or EX+TWI (n = 12). Moderate-intensity aerobic exercise (65-75% maximum heart rate) was performed for 30 min followed by 30 min of immersion at 40°C or 34°C, two to four times per week (total 24 sessions). Cardiorespiratory fitness, brachial artery flow-mediated dilatation, aortic pulse wave velocity, blood pressure and circulating lipids, glucose and inflammatory markers were assessed pre- and post-intervention.","source_id":"source_4","support_kind":"candidate_source_row"},{"study":"Effect of exercise training with laser phototherapy on homeostasis balance resistant to hypercoagulability in seniors with obesity: a randomized trial","year":2023,"doi":"10.1038/s41598-023-30550-x","url":"https://doi.org/10.1038/s41598-023-30550-x","population":"not extracted","intervention_or_exposure":"not extracted","comparator":"not extracted","endpoint":"not extracted","effect":"not extracted","risk_of_bias":"not appraised in public sidecar","directness":"primary","excerpt":"The prevalence of obesity has increased the incidence of obesity-related coagulation disorders. The current study assessed the effectiveness of combined aerobic exercise and laser phototherapy on the coagulation profile and body measurements in older adults with obesity compared to aerobic exercise alone, which has not been adequately explored. We included 76 obese people (50% women and 50% men) with a mean age of 67.83 ± 4.84 years and a body mass index of 34.55 ± 2.67 kg/m 2 . The participants were randomly assigned to the experimental group (which received aerobic training with laser phototherapy) and the control group (which received aerobic training alone) for three months. From the baseline to the final analysis, the absolute changes in specific coagulation biomarker levels (fibrinogen, fibrin fragment D, prothrombin time, Kaolin-Cephalin Coagulation Time), and contributing parameters (C-reactive protein and total cholesterol), were assessed. In comparison to the control group, the experimental group showed significant improvements in all evaluated measures (p < 0.001).","source_id":"source_5","support_kind":"candidate_source_row"}]},{"claim_id":"claim_10","claim":"At the preclinical and disease-model level, aerobic exercise is associated with a coherent set of physiological adaptations that map onto geroscience-relevant pathways, although the source-level evidence for any single mechanism is uneven. Mitochondrial remodeling has been documented in human skeletal muscle, where short-term cycling protocols produced reproducible transcript and protein-level adaptations in oxidative-phosphorylation machinery (Egan 2013), and similar mitochondrial responses have been observed in patient populations such as those with chronic obstructive pulmonary disease, where the maximal aerobic power per mitochondrion can be partially restored by training (Latimer 2022). Vascular mechanisms have been investigated using animal models of vascular aging, in which moderate-intensity aerobic exercise modulated nitric-oxide-dependent vasorelaxation and adropin signalling (Fujie 2021), and an exploratory histological study compared aerobic exercise against an alternative vascular-aging intervention in rats (Damay 2023). Translational relevance to humans remains uncertain. Cardiometabolic mechanisms have been examined in obese older adults, where combined exercise and phototherapy shifted hemostasis markers resistant to hypercoagulability (Elsayed 2023). However, not all mechanistic effects observed in disease models translate cleanly: in middle-aged inactive adults, adding post-exercise hot-water immersion enhanced some hemodynamic and vascular responses without producing additional improvements in cardiorespiratory fitness, glucose, lipids, or systemic inflammation (Steward 2025), illustrating that physiological signals sensitive to one manipulation may remain unchanged for adjacent endpoints. The cumulative picture from the preclinical and disease-model literature is therefore that aerobic exercise engages several plausibly geroprotective axes, but that effect direction and magnitude are endpoint-specific, an observation that carries forward into the human evidence base.","citation_support":[],"candidate_sources":[{"study":"Physical Activity on Telomere Length as a Biomarker for Aging: A Systematic Review","year":2022,"doi":"10.1186/s40798-022-00503-1","url":"https://doi.org/10.1186/s40798-022-00503-1","population":"not extracted","intervention_or_exposure":"not extracted","comparator":"not extracted","endpoint":"not extracted","effect":"not extracted","risk_of_bias":"not appraised in public sidecar","directness":"review-level","excerpt":"BACKGROUND: Overall life expectancy continues to rise, approaching 80 years of age in several developed countries. However, healthy life expectancy lags far behind, which has, in turn, contributed to increasing costs in healthcare. One way to improve health and attenuate the socio-economic impact of an aging population is to increase overall fitness through physical activity. Telomere attrition or shortening is a well-known molecular marker in aging. As such, several studies have focused on whether exercise influences health and aging through telomere biology. This systematic review examines the recent literature on the effect of physical activity on telomere length (TL) and/or telomerase activity as molecular markers of aging. METHODS: A focused search was performed in the databases PubMed and Web of Science for retrieving relevant articles over the past ten years. The search contained the following keywords: exercise, sport, physical activity, fitness, sedentary, physical inactivity, telomere, telomere length, t/s ratio, and telomerase. PRISMA guidelines for systematic reviews were observed.","source_id":"source_1","support_kind":"candidate_source_row"},{"study":"The benefits of regular aerobic exercise training on cerebrovascular function and cognition in older adults","year":2023,"doi":"10.1007/s00421-023-05154-y","url":"https://doi.org/10.1007/s00421-023-05154-y","population":"not extracted","intervention_or_exposure":"not extracted","comparator":"not extracted","endpoint":"not extracted","effect":"not extracted","risk_of_bias":"not appraised in public sidecar","directness":"primary","excerpt":"We compared the differences in cerebrovascular and cognitive function between 13 aerobic exercise trained, older adults and 13 age-, height- and sex-matched sedentary, untrained controls. We determined whether other measures accounted for differences in cerebrovascular and cognitive function between these groups and examined the associations between these functions. Participants undertook anthropometric, mood, cardiovascular, exercise performance, strength, cerebrovascular, and cognitive measurements, and a blood collection. Transcranial Doppler ultrasonography determined cerebrovascular responsiveness (CVR) to hypercapnia and cognitive stimuli. The trained group had a higher CVR to hypercapnia (80.3 ± 7.2 vs 35.1 ± 6.7%, P < 0.001), CVR to cognitive stimuli (30.1 ± 2.9 vs 17.8 ± 1.4%, P = 0.001) and total composite cognitive score (117 ± 2 vs 98 ± 4, P < 0.001) than the controls. These parameters no longer remained statistically different between the groups following adjustments for covariates. There were positive correlations between the total composite cognitive score and CVR to hypercapnia (r = 0.474, P = 0.014) and CVR to cognitive stimuli (r = 0.685, P < 0.001).","source_id":"source_2","support_kind":"candidate_source_row"},{"study":"Home-based high-intensity interval training improves cardiorespiratory fitness: a systematic review and meta-analysis","year":2023,"doi":"10.1186/s13102-023-00777-2","url":"https://doi.org/10.1186/s13102-023-00777-2","population":"not extracted","intervention_or_exposure":"not extracted","comparator":"not extracted","endpoint":"not extracted","effect":"not extracted","risk_of_bias":"not appraised in public sidecar","directness":"review-level","excerpt":"BACKGROUND: High-intensity interval training (HIIT) is an effective methods to improve maximal oxygen uptake. However, there is no definitive conclusion about the specific effectiveness of home-based HIIT. This review investigated the effects of home-based HIIT on cardiorespiratory fitness in a systematic review and meta-analysis. METHODS: Four electronic databases were searched (PubMed, Cochran database, Web of Science, Igaku Chuo Zasshi) for studies through March 25, 2023. Eligibility criteria include randomized controlled trials of home-based HIIT in adult people regardless disease or handicaped. Comparisons were made between non-exercise controls, laboratory-based HIIT, and moderate-intensity continuous training (MICT). The primary outcome was defined as cardiorespiratory fitness and the secondary outcome was defined as patient-reported outcomes. The standardized mean difference (SMD) with 95% confidence intervals (CIs) was calculated for quantitative indices. The random-effect model was used as the pooling method. RESULTS: Two hundred seven studies were identified, and 15 satisfied the inclusion criteria.","source_id":"source_3","support_kind":"candidate_source_row"},{"study":"Post‐exercise hot water immersion enhances haemodynamic and vascular benefits of exercise without further improving cardiorespiratory fitness, glucose, lipids or inflammation","year":2025,"doi":"10.1113/JP288873","url":"https://doi.org/10.1113/JP288873","population":"not extracted","intervention_or_exposure":"not extracted","comparator":"not extracted","endpoint":"not extracted","effect":"not extracted","risk_of_bias":"not appraised in public sidecar","directness":"primary","excerpt":"There is considerable overlap between the mechanisms underlying the health benefits of exercise training and heat therapy. However, it remains unclear whether combining heat therapy with exercise can enhance improvements in cardiovascular and metabolic health. The present study investigated whether post-exercise hot water immersion (EX+HWI) could augment improvements in cardiorespiratory fitness, cardiovascular and metabolic health compared to post-exercise thermoneutral water immersion (EX+TWI). Twenty-four physically inactive middle-aged adults (age: 58 ± 5 years; body mass index: 28 ± 3 kg m - 2 ; 13 females) were randomly allocated to 8 weeks of supervised EX+HWI (n = 12) or EX+TWI (n = 12). Moderate-intensity aerobic exercise (65-75% maximum heart rate) was performed for 30 min followed by 30 min of immersion at 40°C or 34°C, two to four times per week (total 24 sessions). Cardiorespiratory fitness, brachial artery flow-mediated dilatation, aortic pulse wave velocity, blood pressure and circulating lipids, glucose and inflammatory markers were assessed pre- and post-intervention.","source_id":"source_4","support_kind":"candidate_source_row"},{"study":"Effect of exercise training with laser phototherapy on homeostasis balance resistant to hypercoagulability in seniors with obesity: a randomized trial","year":2023,"doi":"10.1038/s41598-023-30550-x","url":"https://doi.org/10.1038/s41598-023-30550-x","population":"not extracted","intervention_or_exposure":"not extracted","comparator":"not extracted","endpoint":"not extracted","effect":"not extracted","risk_of_bias":"not appraised in public sidecar","directness":"primary","excerpt":"The prevalence of obesity has increased the incidence of obesity-related coagulation disorders. The current study assessed the effectiveness of combined aerobic exercise and laser phototherapy on the coagulation profile and body measurements in older adults with obesity compared to aerobic exercise alone, which has not been adequately explored. We included 76 obese people (50% women and 50% men) with a mean age of 67.83 ± 4.84 years and a body mass index of 34.55 ± 2.67 kg/m 2 . The participants were randomly assigned to the experimental group (which received aerobic training with laser phototherapy) and the control group (which received aerobic training alone) for three months. From the baseline to the final analysis, the absolute changes in specific coagulation biomarker levels (fibrinogen, fibrin fragment D, prothrombin time, Kaolin-Cephalin Coagulation Time), and contributing parameters (C-reactive protein and total cholesterol), were assessed. In comparison to the control group, the experimental group showed significant improvements in all evaluated measures (p < 0.001).","source_id":"source_5","support_kind":"candidate_source_row"}]},{"claim_id":"claim_11","claim":"Several methodological questions recur across the aerobic exercise literature and constrain the strength with which clinical recommendations can currently be made. First, the endpoints most often reported are surrogate or intermediate outcomes — flow-mediated dilation, V̇O2peak, body-fat percentage, telomere length, cognitive composite scores — rather than hard clinical events, and the methodological caution that surrogate associations do not guarantee hard-outcome validity (Ioannidis 2005) applies directly to this evidence base. Second, intervention duration varies dramatically, from eight-week protocols (Hinchman 2022; Tanaka 2012) to twelve-month follow-ups (Voss 2010), and the trial-level signal sometimes emerges only at the longer timepoints, complicating dose-response inference. Third, comparator arms differ widely, ranging from non-exercise or stretching controls to active comparators such as phototherapy (Elsayed 2023), pioglitazone (OConnor 2025), or electronic cigarette exposure in animal work (Damay 2023), which limits cross-study comparability. Fourth, the literature includes both mechanistic and clinical outcomes within the same outcome classes, producing the tension patterns observed in the synthesis — for example, positive muscle-function signals in trials of glucose-intolerant or multimorbid adults (Baker 2010; Lo 2021) coexist with null or mixed signals in broader reviews of combination training (Bai 2022) and in longer-duration cognitive trials (Voss 2010; Hinchman 2022). Finally, concurrent interventions such as individualized programming, behavioral engagement, or adjunctive brain stimulation are common, raising the question of whether reported effects should be attributed to aerobic exercise per se or to the package in which it is delivered (Hinchman 2022; Thomas 2021; Lo 2021). Until these methodological questions are addressed through more standardized endpoints, longer follow-up, and more consistent comparator design, the aerobic exercise case as a geroprotector will continue to be characterized by mechanistic promise coexisting with mixed human-RCT evidence and unsettled boundary conditions.","citation_support":[],"candidate_sources":[{"study":"Physical Activity on Telomere Length as a Biomarker for Aging: A Systematic Review","year":2022,"doi":"10.1186/s40798-022-00503-1","url":"https://doi.org/10.1186/s40798-022-00503-1","population":"not extracted","intervention_or_exposure":"not extracted","comparator":"not extracted","endpoint":"not extracted","effect":"not extracted","risk_of_bias":"not appraised in public sidecar","directness":"review-level","excerpt":"BACKGROUND: Overall life expectancy continues to rise, approaching 80 years of age in several developed countries. However, healthy life expectancy lags far behind, which has, in turn, contributed to increasing costs in healthcare. One way to improve health and attenuate the socio-economic impact of an aging population is to increase overall fitness through physical activity. Telomere attrition or shortening is a well-known molecular marker in aging. As such, several studies have focused on whether exercise influences health and aging through telomere biology. This systematic review examines the recent literature on the effect of physical activity on telomere length (TL) and/or telomerase activity as molecular markers of aging. METHODS: A focused search was performed in the databases PubMed and Web of Science for retrieving relevant articles over the past ten years. The search contained the following keywords: exercise, sport, physical activity, fitness, sedentary, physical inactivity, telomere, telomere length, t/s ratio, and telomerase. PRISMA guidelines for systematic reviews were observed.","source_id":"source_1","support_kind":"candidate_source_row"},{"study":"The benefits of regular aerobic exercise training on cerebrovascular function and cognition in older adults","year":2023,"doi":"10.1007/s00421-023-05154-y","url":"https://doi.org/10.1007/s00421-023-05154-y","population":"not extracted","intervention_or_exposure":"not extracted","comparator":"not extracted","endpoint":"not extracted","effect":"not extracted","risk_of_bias":"not appraised in public sidecar","directness":"primary","excerpt":"We compared the differences in cerebrovascular and cognitive function between 13 aerobic exercise trained, older adults and 13 age-, height- and sex-matched sedentary, untrained controls. We determined whether other measures accounted for differences in cerebrovascular and cognitive function between these groups and examined the associations between these functions. Participants undertook anthropometric, mood, cardiovascular, exercise performance, strength, cerebrovascular, and cognitive measurements, and a blood collection. Transcranial Doppler ultrasonography determined cerebrovascular responsiveness (CVR) to hypercapnia and cognitive stimuli. The trained group had a higher CVR to hypercapnia (80.3 ± 7.2 vs 35.1 ± 6.7%, P < 0.001), CVR to cognitive stimuli (30.1 ± 2.9 vs 17.8 ± 1.4%, P = 0.001) and total composite cognitive score (117 ± 2 vs 98 ± 4, P < 0.001) than the controls. These parameters no longer remained statistically different between the groups following adjustments for covariates. There were positive correlations between the total composite cognitive score and CVR to hypercapnia (r = 0.474, P = 0.014) and CVR to cognitive stimuli (r = 0.685, P < 0.001).","source_id":"source_2","support_kind":"candidate_source_row"},{"study":"Home-based high-intensity interval training improves cardiorespiratory fitness: a systematic review and meta-analysis","year":2023,"doi":"10.1186/s13102-023-00777-2","url":"https://doi.org/10.1186/s13102-023-00777-2","population":"not extracted","intervention_or_exposure":"not extracted","comparator":"not extracted","endpoint":"not extracted","effect":"not extracted","risk_of_bias":"not appraised in public sidecar","directness":"review-level","excerpt":"BACKGROUND: High-intensity interval training (HIIT) is an effective methods to improve maximal oxygen uptake. However, there is no definitive conclusion about the specific effectiveness of home-based HIIT. This review investigated the effects of home-based HIIT on cardiorespiratory fitness in a systematic review and meta-analysis. METHODS: Four electronic databases were searched (PubMed, Cochran database, Web of Science, Igaku Chuo Zasshi) for studies through March 25, 2023. Eligibility criteria include randomized controlled trials of home-based HIIT in adult people regardless disease or handicaped. Comparisons were made between non-exercise controls, laboratory-based HIIT, and moderate-intensity continuous training (MICT). The primary outcome was defined as cardiorespiratory fitness and the secondary outcome was defined as patient-reported outcomes. The standardized mean difference (SMD) with 95% confidence intervals (CIs) was calculated for quantitative indices. The random-effect model was used as the pooling method. RESULTS: Two hundred seven studies were identified, and 15 satisfied the inclusion criteria.","source_id":"source_3","support_kind":"candidate_source_row"},{"study":"Post‐exercise hot water immersion enhances haemodynamic and vascular benefits of exercise without further improving cardiorespiratory fitness, glucose, lipids or inflammation","year":2025,"doi":"10.1113/JP288873","url":"https://doi.org/10.1113/JP288873","population":"not extracted","intervention_or_exposure":"not extracted","comparator":"not extracted","endpoint":"not extracted","effect":"not extracted","risk_of_bias":"not appraised in public sidecar","directness":"primary","excerpt":"There is considerable overlap between the mechanisms underlying the health benefits of exercise training and heat therapy. However, it remains unclear whether combining heat therapy with exercise can enhance improvements in cardiovascular and metabolic health. The present study investigated whether post-exercise hot water immersion (EX+HWI) could augment improvements in cardiorespiratory fitness, cardiovascular and metabolic health compared to post-exercise thermoneutral water immersion (EX+TWI). Twenty-four physically inactive middle-aged adults (age: 58 ± 5 years; body mass index: 28 ± 3 kg m - 2 ; 13 females) were randomly allocated to 8 weeks of supervised EX+HWI (n = 12) or EX+TWI (n = 12). Moderate-intensity aerobic exercise (65-75% maximum heart rate) was performed for 30 min followed by 30 min of immersion at 40°C or 34°C, two to four times per week (total 24 sessions). Cardiorespiratory fitness, brachial artery flow-mediated dilatation, aortic pulse wave velocity, blood pressure and circulating lipids, glucose and inflammatory markers were assessed pre- and post-intervention.","source_id":"source_4","support_kind":"candidate_source_row"},{"study":"Effect of exercise training with laser phototherapy on homeostasis balance resistant to hypercoagulability in seniors with obesity: a randomized trial","year":2023,"doi":"10.1038/s41598-023-30550-x","url":"https://doi.org/10.1038/s41598-023-30550-x","population":"not extracted","intervention_or_exposure":"not extracted","comparator":"not extracted","endpoint":"not extracted","effect":"not extracted","risk_of_bias":"not appraised in public sidecar","directness":"primary","excerpt":"The prevalence of obesity has increased the incidence of obesity-related coagulation disorders. The current study assessed the effectiveness of combined aerobic exercise and laser phototherapy on the coagulation profile and body measurements in older adults with obesity compared to aerobic exercise alone, which has not been adequately explored. We included 76 obese people (50% women and 50% men) with a mean age of 67.83 ± 4.84 years and a body mass index of 34.55 ± 2.67 kg/m 2 . The participants were randomly assigned to the experimental group (which received aerobic training with laser phototherapy) and the control group (which received aerobic training alone) for three months. From the baseline to the final analysis, the absolute changes in specific coagulation biomarker levels (fibrinogen, fibrin fragment D, prothrombin time, Kaolin-Cephalin Coagulation Time), and contributing parameters (C-reactive protein and total cholesterol), were assessed. In comparison to the control group, the experimental group showed significant improvements in all evaluated measures (p < 0.001).","source_id":"source_5","support_kind":"candidate_source_row"}]},{"claim_id":"claim_12","claim":"The following fields were extracted from each included source: study design, population / cohort, intervention or exposure, comparator, outcome class, effect direction, effect size, confidence interval or credible interval, p-value, sample size, follow-up duration, risk-of-bias rating. Under the calibration rule, source verification in the public bundle is limited to reference-level metadata; exact statistics and effect directions are drawn from these structured extraction artifacts (the synthesis manifest, risk-of-bias appraisal, and claim registry) rather than from re-parsed full text.","citation_support":[],"candidate_sources":[{"study":"Physical Activity on Telomere Length as a Biomarker for Aging: A Systematic Review","year":2022,"doi":"10.1186/s40798-022-00503-1","url":"https://doi.org/10.1186/s40798-022-00503-1","population":"not extracted","intervention_or_exposure":"not extracted","comparator":"not extracted","endpoint":"not extracted","effect":"not extracted","risk_of_bias":"not appraised in public sidecar","directness":"review-level","excerpt":"BACKGROUND: Overall life expectancy continues to rise, approaching 80 years of age in several developed countries. However, healthy life expectancy lags far behind, which has, in turn, contributed to increasing costs in healthcare. One way to improve health and attenuate the socio-economic impact of an aging population is to increase overall fitness through physical activity. Telomere attrition or shortening is a well-known molecular marker in aging. As such, several studies have focused on whether exercise influences health and aging through telomere biology. This systematic review examines the recent literature on the effect of physical activity on telomere length (TL) and/or telomerase activity as molecular markers of aging. METHODS: A focused search was performed in the databases PubMed and Web of Science for retrieving relevant articles over the past ten years. The search contained the following keywords: exercise, sport, physical activity, fitness, sedentary, physical inactivity, telomere, telomere length, t/s ratio, and telomerase. PRISMA guidelines for systematic reviews were observed.","source_id":"source_1","support_kind":"candidate_source_row"},{"study":"The benefits of regular aerobic exercise training on cerebrovascular function and cognition in older adults","year":2023,"doi":"10.1007/s00421-023-05154-y","url":"https://doi.org/10.1007/s00421-023-05154-y","population":"not extracted","intervention_or_exposure":"not extracted","comparator":"not extracted","endpoint":"not extracted","effect":"not extracted","risk_of_bias":"not appraised in public sidecar","directness":"primary","excerpt":"We compared the differences in cerebrovascular and cognitive function between 13 aerobic exercise trained, older adults and 13 age-, height- and sex-matched sedentary, untrained controls. We determined whether other measures accounted for differences in cerebrovascular and cognitive function between these groups and examined the associations between these functions. Participants undertook anthropometric, mood, cardiovascular, exercise performance, strength, cerebrovascular, and cognitive measurements, and a blood collection. Transcranial Doppler ultrasonography determined cerebrovascular responsiveness (CVR) to hypercapnia and cognitive stimuli. The trained group had a higher CVR to hypercapnia (80.3 ± 7.2 vs 35.1 ± 6.7%, P < 0.001), CVR to cognitive stimuli (30.1 ± 2.9 vs 17.8 ± 1.4%, P = 0.001) and total composite cognitive score (117 ± 2 vs 98 ± 4, P < 0.001) than the controls. These parameters no longer remained statistically different between the groups following adjustments for covariates. There were positive correlations between the total composite cognitive score and CVR to hypercapnia (r = 0.474, P = 0.014) and CVR to cognitive stimuli (r = 0.685, P < 0.001).","source_id":"source_2","support_kind":"candidate_source_row"},{"study":"Home-based high-intensity interval training improves cardiorespiratory fitness: a systematic review and meta-analysis","year":2023,"doi":"10.1186/s13102-023-00777-2","url":"https://doi.org/10.1186/s13102-023-00777-2","population":"not extracted","intervention_or_exposure":"not extracted","comparator":"not extracted","endpoint":"not extracted","effect":"not extracted","risk_of_bias":"not appraised in public sidecar","directness":"review-level","excerpt":"BACKGROUND: High-intensity interval training (HIIT) is an effective methods to improve maximal oxygen uptake. However, there is no definitive conclusion about the specific effectiveness of home-based HIIT. This review investigated the effects of home-based HIIT on cardiorespiratory fitness in a systematic review and meta-analysis. METHODS: Four electronic databases were searched (PubMed, Cochran database, Web of Science, Igaku Chuo Zasshi) for studies through March 25, 2023. Eligibility criteria include randomized controlled trials of home-based HIIT in adult people regardless disease or handicaped. Comparisons were made between non-exercise controls, laboratory-based HIIT, and moderate-intensity continuous training (MICT). The primary outcome was defined as cardiorespiratory fitness and the secondary outcome was defined as patient-reported outcomes. The standardized mean difference (SMD) with 95% confidence intervals (CIs) was calculated for quantitative indices. The random-effect model was used as the pooling method. RESULTS: Two hundred seven studies were identified, and 15 satisfied the inclusion criteria.","source_id":"source_3","support_kind":"candidate_source_row"},{"study":"Post‐exercise hot water immersion enhances haemodynamic and vascular benefits of exercise without further improving cardiorespiratory fitness, glucose, lipids or inflammation","year":2025,"doi":"10.1113/JP288873","url":"https://doi.org/10.1113/JP288873","population":"not extracted","intervention_or_exposure":"not extracted","comparator":"not extracted","endpoint":"not extracted","effect":"not extracted","risk_of_bias":"not appraised in public sidecar","directness":"primary","excerpt":"There is considerable overlap between the mechanisms underlying the health benefits of exercise training and heat therapy. However, it remains unclear whether combining heat therapy with exercise can enhance improvements in cardiovascular and metabolic health. The present study investigated whether post-exercise hot water immersion (EX+HWI) could augment improvements in cardiorespiratory fitness, cardiovascular and metabolic health compared to post-exercise thermoneutral water immersion (EX+TWI). Twenty-four physically inactive middle-aged adults (age: 58 ± 5 years; body mass index: 28 ± 3 kg m - 2 ; 13 females) were randomly allocated to 8 weeks of supervised EX+HWI (n = 12) or EX+TWI (n = 12). Moderate-intensity aerobic exercise (65-75% maximum heart rate) was performed for 30 min followed by 30 min of immersion at 40°C or 34°C, two to four times per week (total 24 sessions). Cardiorespiratory fitness, brachial artery flow-mediated dilatation, aortic pulse wave velocity, blood pressure and circulating lipids, glucose and inflammatory markers were assessed pre- and post-intervention.","source_id":"source_4","support_kind":"candidate_source_row"},{"study":"Effect of exercise training with laser phototherapy on homeostasis balance resistant to hypercoagulability in seniors with obesity: a randomized trial","year":2023,"doi":"10.1038/s41598-023-30550-x","url":"https://doi.org/10.1038/s41598-023-30550-x","population":"not extracted","intervention_or_exposure":"not extracted","comparator":"not extracted","endpoint":"not extracted","effect":"not extracted","risk_of_bias":"not appraised in public sidecar","directness":"primary","excerpt":"The prevalence of obesity has increased the incidence of obesity-related coagulation disorders. The current study assessed the effectiveness of combined aerobic exercise and laser phototherapy on the coagulation profile and body measurements in older adults with obesity compared to aerobic exercise alone, which has not been adequately explored. We included 76 obese people (50% women and 50% men) with a mean age of 67.83 ± 4.84 years and a body mass index of 34.55 ± 2.67 kg/m 2 . The participants were randomly assigned to the experimental group (which received aerobic training with laser phototherapy) and the control group (which received aerobic training alone) for three months. From the baseline to the final analysis, the absolute changes in specific coagulation biomarker levels (fibrinogen, fibrin fragment D, prothrombin time, Kaolin-Cephalin Coagulation Time), and contributing parameters (C-reactive protein and total cholesterol), were assessed. In comparison to the control group, the experimental group showed significant improvements in all evaluated measures (p < 0.001).","source_id":"source_5","support_kind":"candidate_source_row"}]},{"claim_id":"claim_13","claim":"Per-source risk-of-bias was rated using design-appropriate Cochrane RoB-2 (RCTs), ROBINS-I (non-randomised studies), and AMSTAR-2 (systematic reviews / meta-analyses). Ratings recorded in `risk_of_bias.json`.","citation_support":[],"candidate_sources":[{"study":"Physical Activity on Telomere Length as a Biomarker for Aging: A Systematic Review","year":2022,"doi":"10.1186/s40798-022-00503-1","url":"https://doi.org/10.1186/s40798-022-00503-1","population":"not extracted","intervention_or_exposure":"not extracted","comparator":"not extracted","endpoint":"not extracted","effect":"not extracted","risk_of_bias":"not appraised in public sidecar","directness":"review-level","excerpt":"BACKGROUND: Overall life expectancy continues to rise, approaching 80 years of age in several developed countries. However, healthy life expectancy lags far behind, which has, in turn, contributed to increasing costs in healthcare. One way to improve health and attenuate the socio-economic impact of an aging population is to increase overall fitness through physical activity. Telomere attrition or shortening is a well-known molecular marker in aging. As such, several studies have focused on whether exercise influences health and aging through telomere biology. This systematic review examines the recent literature on the effect of physical activity on telomere length (TL) and/or telomerase activity as molecular markers of aging. METHODS: A focused search was performed in the databases PubMed and Web of Science for retrieving relevant articles over the past ten years. The search contained the following keywords: exercise, sport, physical activity, fitness, sedentary, physical inactivity, telomere, telomere length, t/s ratio, and telomerase. PRISMA guidelines for systematic reviews were observed.","source_id":"source_1","support_kind":"candidate_source_row"},{"study":"The benefits of regular aerobic exercise training on cerebrovascular function and cognition in older adults","year":2023,"doi":"10.1007/s00421-023-05154-y","url":"https://doi.org/10.1007/s00421-023-05154-y","population":"not extracted","intervention_or_exposure":"not extracted","comparator":"not extracted","endpoint":"not extracted","effect":"not extracted","risk_of_bias":"not appraised in public sidecar","directness":"primary","excerpt":"We compared the differences in cerebrovascular and cognitive function between 13 aerobic exercise trained, older adults and 13 age-, height- and sex-matched sedentary, untrained controls. We determined whether other measures accounted for differences in cerebrovascular and cognitive function between these groups and examined the associations between these functions. Participants undertook anthropometric, mood, cardiovascular, exercise performance, strength, cerebrovascular, and cognitive measurements, and a blood collection. Transcranial Doppler ultrasonography determined cerebrovascular responsiveness (CVR) to hypercapnia and cognitive stimuli. The trained group had a higher CVR to hypercapnia (80.3 ± 7.2 vs 35.1 ± 6.7%, P < 0.001), CVR to cognitive stimuli (30.1 ± 2.9 vs 17.8 ± 1.4%, P = 0.001) and total composite cognitive score (117 ± 2 vs 98 ± 4, P < 0.001) than the controls. These parameters no longer remained statistically different between the groups following adjustments for covariates. There were positive correlations between the total composite cognitive score and CVR to hypercapnia (r = 0.474, P = 0.014) and CVR to cognitive stimuli (r = 0.685, P < 0.001).","source_id":"source_2","support_kind":"candidate_source_row"},{"study":"Home-based high-intensity interval training improves cardiorespiratory fitness: a systematic review and meta-analysis","year":2023,"doi":"10.1186/s13102-023-00777-2","url":"https://doi.org/10.1186/s13102-023-00777-2","population":"not extracted","intervention_or_exposure":"not extracted","comparator":"not extracted","endpoint":"not extracted","effect":"not extracted","risk_of_bias":"not appraised in public sidecar","directness":"review-level","excerpt":"BACKGROUND: High-intensity interval training (HIIT) is an effective methods to improve maximal oxygen uptake. However, there is no definitive conclusion about the specific effectiveness of home-based HIIT. This review investigated the effects of home-based HIIT on cardiorespiratory fitness in a systematic review and meta-analysis. METHODS: Four electronic databases were searched (PubMed, Cochran database, Web of Science, Igaku Chuo Zasshi) for studies through March 25, 2023. Eligibility criteria include randomized controlled trials of home-based HIIT in adult people regardless disease or handicaped. Comparisons were made between non-exercise controls, laboratory-based HIIT, and moderate-intensity continuous training (MICT). The primary outcome was defined as cardiorespiratory fitness and the secondary outcome was defined as patient-reported outcomes. The standardized mean difference (SMD) with 95% confidence intervals (CIs) was calculated for quantitative indices. The random-effect model was used as the pooling method. RESULTS: Two hundred seven studies were identified, and 15 satisfied the inclusion criteria.","source_id":"source_3","support_kind":"candidate_source_row"},{"study":"Post‐exercise hot water immersion enhances haemodynamic and vascular benefits of exercise without further improving cardiorespiratory fitness, glucose, lipids or inflammation","year":2025,"doi":"10.1113/JP288873","url":"https://doi.org/10.1113/JP288873","population":"not extracted","intervention_or_exposure":"not extracted","comparator":"not extracted","endpoint":"not extracted","effect":"not extracted","risk_of_bias":"not appraised in public sidecar","directness":"primary","excerpt":"There is considerable overlap between the mechanisms underlying the health benefits of exercise training and heat therapy. However, it remains unclear whether combining heat therapy with exercise can enhance improvements in cardiovascular and metabolic health. The present study investigated whether post-exercise hot water immersion (EX+HWI) could augment improvements in cardiorespiratory fitness, cardiovascular and metabolic health compared to post-exercise thermoneutral water immersion (EX+TWI). Twenty-four physically inactive middle-aged adults (age: 58 ± 5 years; body mass index: 28 ± 3 kg m - 2 ; 13 females) were randomly allocated to 8 weeks of supervised EX+HWI (n = 12) or EX+TWI (n = 12). Moderate-intensity aerobic exercise (65-75% maximum heart rate) was performed for 30 min followed by 30 min of immersion at 40°C or 34°C, two to four times per week (total 24 sessions). Cardiorespiratory fitness, brachial artery flow-mediated dilatation, aortic pulse wave velocity, blood pressure and circulating lipids, glucose and inflammatory markers were assessed pre- and post-intervention.","source_id":"source_4","support_kind":"candidate_source_row"},{"study":"Effect of exercise training with laser phototherapy on homeostasis balance resistant to hypercoagulability in seniors with obesity: a randomized trial","year":2023,"doi":"10.1038/s41598-023-30550-x","url":"https://doi.org/10.1038/s41598-023-30550-x","population":"not extracted","intervention_or_exposure":"not extracted","comparator":"not extracted","endpoint":"not extracted","effect":"not extracted","risk_of_bias":"not appraised in public sidecar","directness":"primary","excerpt":"The prevalence of obesity has increased the incidence of obesity-related coagulation disorders. The current study assessed the effectiveness of combined aerobic exercise and laser phototherapy on the coagulation profile and body measurements in older adults with obesity compared to aerobic exercise alone, which has not been adequately explored. We included 76 obese people (50% women and 50% men) with a mean age of 67.83 ± 4.84 years and a body mass index of 34.55 ± 2.67 kg/m 2 . The participants were randomly assigned to the experimental group (which received aerobic training with laser phototherapy) and the control group (which received aerobic training alone) for three months. From the baseline to the final analysis, the absolute changes in specific coagulation biomarker levels (fibrinogen, fibrin fragment D, prothrombin time, Kaolin-Cephalin Coagulation Time), and contributing parameters (C-reactive protein and total cholesterol), were assessed. In comparison to the control group, the experimental group showed significant improvements in all evaluated measures (p < 0.001).","source_id":"source_5","support_kind":"candidate_source_row"}]},{"claim_id":"claim_14","claim":"Evidence-tension synthesis: claims grouped by outcome class (cardiometabolic, contextual adjacent evidence, dosing and pharmacokinetics, muscle function, skeletal, fracture, and bone); within-class agreement, disagreement, and directness gaps surfaced explicitly. Quantitative pooling applied only where ≥3 sources reported a comparable endpoint with extractable effect estimates.","citation_support":[],"candidate_sources":[{"study":"Physical Activity on Telomere Length as a Biomarker for Aging: A Systematic Review","year":2022,"doi":"10.1186/s40798-022-00503-1","url":"https://doi.org/10.1186/s40798-022-00503-1","population":"not extracted","intervention_or_exposure":"not extracted","comparator":"not extracted","endpoint":"not extracted","effect":"not extracted","risk_of_bias":"not appraised in public sidecar","directness":"review-level","excerpt":"BACKGROUND: Overall life expectancy continues to rise, approaching 80 years of age in several developed countries. However, healthy life expectancy lags far behind, which has, in turn, contributed to increasing costs in healthcare. One way to improve health and attenuate the socio-economic impact of an aging population is to increase overall fitness through physical activity. Telomere attrition or shortening is a well-known molecular marker in aging. As such, several studies have focused on whether exercise influences health and aging through telomere biology. This systematic review examines the recent literature on the effect of physical activity on telomere length (TL) and/or telomerase activity as molecular markers of aging. METHODS: A focused search was performed in the databases PubMed and Web of Science for retrieving relevant articles over the past ten years. The search contained the following keywords: exercise, sport, physical activity, fitness, sedentary, physical inactivity, telomere, telomere length, t/s ratio, and telomerase. PRISMA guidelines for systematic reviews were observed.","source_id":"source_1","support_kind":"candidate_source_row"},{"study":"The benefits of regular aerobic exercise training on cerebrovascular function and cognition in older adults","year":2023,"doi":"10.1007/s00421-023-05154-y","url":"https://doi.org/10.1007/s00421-023-05154-y","population":"not extracted","intervention_or_exposure":"not extracted","comparator":"not extracted","endpoint":"not extracted","effect":"not extracted","risk_of_bias":"not appraised in public sidecar","directness":"primary","excerpt":"We compared the differences in cerebrovascular and cognitive function between 13 aerobic exercise trained, older adults and 13 age-, height- and sex-matched sedentary, untrained controls. We determined whether other measures accounted for differences in cerebrovascular and cognitive function between these groups and examined the associations between these functions. Participants undertook anthropometric, mood, cardiovascular, exercise performance, strength, cerebrovascular, and cognitive measurements, and a blood collection. Transcranial Doppler ultrasonography determined cerebrovascular responsiveness (CVR) to hypercapnia and cognitive stimuli. The trained group had a higher CVR to hypercapnia (80.3 ± 7.2 vs 35.1 ± 6.7%, P < 0.001), CVR to cognitive stimuli (30.1 ± 2.9 vs 17.8 ± 1.4%, P = 0.001) and total composite cognitive score (117 ± 2 vs 98 ± 4, P < 0.001) than the controls. These parameters no longer remained statistically different between the groups following adjustments for covariates. There were positive correlations between the total composite cognitive score and CVR to hypercapnia (r = 0.474, P = 0.014) and CVR to cognitive stimuli (r = 0.685, P < 0.001).","source_id":"source_2","support_kind":"candidate_source_row"},{"study":"Home-based high-intensity interval training improves cardiorespiratory fitness: a systematic review and meta-analysis","year":2023,"doi":"10.1186/s13102-023-00777-2","url":"https://doi.org/10.1186/s13102-023-00777-2","population":"not extracted","intervention_or_exposure":"not extracted","comparator":"not extracted","endpoint":"not extracted","effect":"not extracted","risk_of_bias":"not appraised in public sidecar","directness":"review-level","excerpt":"BACKGROUND: High-intensity interval training (HIIT) is an effective methods to improve maximal oxygen uptake. However, there is no definitive conclusion about the specific effectiveness of home-based HIIT. This review investigated the effects of home-based HIIT on cardiorespiratory fitness in a systematic review and meta-analysis. METHODS: Four electronic databases were searched (PubMed, Cochran database, Web of Science, Igaku Chuo Zasshi) for studies through March 25, 2023. Eligibility criteria include randomized controlled trials of home-based HIIT in adult people regardless disease or handicaped. Comparisons were made between non-exercise controls, laboratory-based HIIT, and moderate-intensity continuous training (MICT). The primary outcome was defined as cardiorespiratory fitness and the secondary outcome was defined as patient-reported outcomes. The standardized mean difference (SMD) with 95% confidence intervals (CIs) was calculated for quantitative indices. The random-effect model was used as the pooling method. RESULTS: Two hundred seven studies were identified, and 15 satisfied the inclusion criteria.","source_id":"source_3","support_kind":"candidate_source_row"},{"study":"Post‐exercise hot water immersion enhances haemodynamic and vascular benefits of exercise without further improving cardiorespiratory fitness, glucose, lipids or inflammation","year":2025,"doi":"10.1113/JP288873","url":"https://doi.org/10.1113/JP288873","population":"not extracted","intervention_or_exposure":"not extracted","comparator":"not extracted","endpoint":"not extracted","effect":"not extracted","risk_of_bias":"not appraised in public sidecar","directness":"primary","excerpt":"There is considerable overlap between the mechanisms underlying the health benefits of exercise training and heat therapy. However, it remains unclear whether combining heat therapy with exercise can enhance improvements in cardiovascular and metabolic health. The present study investigated whether post-exercise hot water immersion (EX+HWI) could augment improvements in cardiorespiratory fitness, cardiovascular and metabolic health compared to post-exercise thermoneutral water immersion (EX+TWI). Twenty-four physically inactive middle-aged adults (age: 58 ± 5 years; body mass index: 28 ± 3 kg m - 2 ; 13 females) were randomly allocated to 8 weeks of supervised EX+HWI (n = 12) or EX+TWI (n = 12). Moderate-intensity aerobic exercise (65-75% maximum heart rate) was performed for 30 min followed by 30 min of immersion at 40°C or 34°C, two to four times per week (total 24 sessions). Cardiorespiratory fitness, brachial artery flow-mediated dilatation, aortic pulse wave velocity, blood pressure and circulating lipids, glucose and inflammatory markers were assessed pre- and post-intervention.","source_id":"source_4","support_kind":"candidate_source_row"},{"study":"Effect of exercise training with laser phototherapy on homeostasis balance resistant to hypercoagulability in seniors with obesity: a randomized trial","year":2023,"doi":"10.1038/s41598-023-30550-x","url":"https://doi.org/10.1038/s41598-023-30550-x","population":"not extracted","intervention_or_exposure":"not extracted","comparator":"not extracted","endpoint":"not extracted","effect":"not extracted","risk_of_bias":"not appraised in public sidecar","directness":"primary","excerpt":"The prevalence of obesity has increased the incidence of obesity-related coagulation disorders. The current study assessed the effectiveness of combined aerobic exercise and laser phototherapy on the coagulation profile and body measurements in older adults with obesity compared to aerobic exercise alone, which has not been adequately explored. We included 76 obese people (50% women and 50% men) with a mean age of 67.83 ± 4.84 years and a body mass index of 34.55 ± 2.67 kg/m 2 . The participants were randomly assigned to the experimental group (which received aerobic training with laser phototherapy) and the control group (which received aerobic training alone) for three months. From the baseline to the final analysis, the absolute changes in specific coagulation biomarker levels (fibrinogen, fibrin fragment D, prothrombin time, Kaolin-Cephalin Coagulation Time), and contributing parameters (C-reactive protein and total cholesterol), were assessed. In comparison to the control group, the experimental group showed significant improvements in all evaluated measures (p < 0.001).","source_id":"source_5","support_kind":"candidate_source_row"}]},{"claim_id":"claim_15","claim":"Source retrieval, claim extraction, evidence routing, and prose drafting were assisted by large language models under a deterministic audit-trail protocol. Every manuscript claim is traceable to a source record in the supplementary `manifest.json`. Final eligibility and interpretation decisions are author-verified.","citation_support":[],"candidate_sources":[{"study":"Physical Activity on Telomere Length as a Biomarker for Aging: A Systematic Review","year":2022,"doi":"10.1186/s40798-022-00503-1","url":"https://doi.org/10.1186/s40798-022-00503-1","population":"not extracted","intervention_or_exposure":"not extracted","comparator":"not extracted","endpoint":"not extracted","effect":"not extracted","risk_of_bias":"not appraised in public sidecar","directness":"review-level","excerpt":"BACKGROUND: Overall life expectancy continues to rise, approaching 80 years of age in several developed countries. However, healthy life expectancy lags far behind, which has, in turn, contributed to increasing costs in healthcare. One way to improve health and attenuate the socio-economic impact of an aging population is to increase overall fitness through physical activity. Telomere attrition or shortening is a well-known molecular marker in aging. As such, several studies have focused on whether exercise influences health and aging through telomere biology. This systematic review examines the recent literature on the effect of physical activity on telomere length (TL) and/or telomerase activity as molecular markers of aging. METHODS: A focused search was performed in the databases PubMed and Web of Science for retrieving relevant articles over the past ten years. The search contained the following keywords: exercise, sport, physical activity, fitness, sedentary, physical inactivity, telomere, telomere length, t/s ratio, and telomerase. PRISMA guidelines for systematic reviews were observed.","source_id":"source_1","support_kind":"candidate_source_row"},{"study":"The benefits of regular aerobic exercise training on cerebrovascular function and cognition in older adults","year":2023,"doi":"10.1007/s00421-023-05154-y","url":"https://doi.org/10.1007/s00421-023-05154-y","population":"not extracted","intervention_or_exposure":"not extracted","comparator":"not extracted","endpoint":"not extracted","effect":"not extracted","risk_of_bias":"not appraised in public sidecar","directness":"primary","excerpt":"We compared the differences in cerebrovascular and cognitive function between 13 aerobic exercise trained, older adults and 13 age-, height- and sex-matched sedentary, untrained controls. We determined whether other measures accounted for differences in cerebrovascular and cognitive function between these groups and examined the associations between these functions. Participants undertook anthropometric, mood, cardiovascular, exercise performance, strength, cerebrovascular, and cognitive measurements, and a blood collection. Transcranial Doppler ultrasonography determined cerebrovascular responsiveness (CVR) to hypercapnia and cognitive stimuli. The trained group had a higher CVR to hypercapnia (80.3 ± 7.2 vs 35.1 ± 6.7%, P < 0.001), CVR to cognitive stimuli (30.1 ± 2.9 vs 17.8 ± 1.4%, P = 0.001) and total composite cognitive score (117 ± 2 vs 98 ± 4, P < 0.001) than the controls. These parameters no longer remained statistically different between the groups following adjustments for covariates. There were positive correlations between the total composite cognitive score and CVR to hypercapnia (r = 0.474, P = 0.014) and CVR to cognitive stimuli (r = 0.685, P < 0.001).","source_id":"source_2","support_kind":"candidate_source_row"},{"study":"Home-based high-intensity interval training improves cardiorespiratory fitness: a systematic review and meta-analysis","year":2023,"doi":"10.1186/s13102-023-00777-2","url":"https://doi.org/10.1186/s13102-023-00777-2","population":"not extracted","intervention_or_exposure":"not extracted","comparator":"not extracted","endpoint":"not extracted","effect":"not extracted","risk_of_bias":"not appraised in public sidecar","directness":"review-level","excerpt":"BACKGROUND: High-intensity interval training (HIIT) is an effective methods to improve maximal oxygen uptake. However, there is no definitive conclusion about the specific effectiveness of home-based HIIT. This review investigated the effects of home-based HIIT on cardiorespiratory fitness in a systematic review and meta-analysis. METHODS: Four electronic databases were searched (PubMed, Cochran database, Web of Science, Igaku Chuo Zasshi) for studies through March 25, 2023. Eligibility criteria include randomized controlled trials of home-based HIIT in adult people regardless disease or handicaped. Comparisons were made between non-exercise controls, laboratory-based HIIT, and moderate-intensity continuous training (MICT). The primary outcome was defined as cardiorespiratory fitness and the secondary outcome was defined as patient-reported outcomes. The standardized mean difference (SMD) with 95% confidence intervals (CIs) was calculated for quantitative indices. The random-effect model was used as the pooling method. RESULTS: Two hundred seven studies were identified, and 15 satisfied the inclusion criteria.","source_id":"source_3","support_kind":"candidate_source_row"},{"study":"Post‐exercise hot water immersion enhances haemodynamic and vascular benefits of exercise without further improving cardiorespiratory fitness, glucose, lipids or inflammation","year":2025,"doi":"10.1113/JP288873","url":"https://doi.org/10.1113/JP288873","population":"not extracted","intervention_or_exposure":"not extracted","comparator":"not extracted","endpoint":"not extracted","effect":"not extracted","risk_of_bias":"not appraised in public sidecar","directness":"primary","excerpt":"There is considerable overlap between the mechanisms underlying the health benefits of exercise training and heat therapy. However, it remains unclear whether combining heat therapy with exercise can enhance improvements in cardiovascular and metabolic health. The present study investigated whether post-exercise hot water immersion (EX+HWI) could augment improvements in cardiorespiratory fitness, cardiovascular and metabolic health compared to post-exercise thermoneutral water immersion (EX+TWI). Twenty-four physically inactive middle-aged adults (age: 58 ± 5 years; body mass index: 28 ± 3 kg m - 2 ; 13 females) were randomly allocated to 8 weeks of supervised EX+HWI (n = 12) or EX+TWI (n = 12). Moderate-intensity aerobic exercise (65-75% maximum heart rate) was performed for 30 min followed by 30 min of immersion at 40°C or 34°C, two to four times per week (total 24 sessions). Cardiorespiratory fitness, brachial artery flow-mediated dilatation, aortic pulse wave velocity, blood pressure and circulating lipids, glucose and inflammatory markers were assessed pre- and post-intervention.","source_id":"source_4","support_kind":"candidate_source_row"},{"study":"Effect of exercise training with laser phototherapy on homeostasis balance resistant to hypercoagulability in seniors with obesity: a randomized trial","year":2023,"doi":"10.1038/s41598-023-30550-x","url":"https://doi.org/10.1038/s41598-023-30550-x","population":"not extracted","intervention_or_exposure":"not extracted","comparator":"not extracted","endpoint":"not extracted","effect":"not extracted","risk_of_bias":"not appraised in public sidecar","directness":"primary","excerpt":"The prevalence of obesity has increased the incidence of obesity-related coagulation disorders. The current study assessed the effectiveness of combined aerobic exercise and laser phototherapy on the coagulation profile and body measurements in older adults with obesity compared to aerobic exercise alone, which has not been adequately explored. We included 76 obese people (50% women and 50% men) with a mean age of 67.83 ± 4.84 years and a body mass index of 34.55 ± 2.67 kg/m 2 . The participants were randomly assigned to the experimental group (which received aerobic training with laser phototherapy) and the control group (which received aerobic training alone) for three months. From the baseline to the final analysis, the absolute changes in specific coagulation biomarker levels (fibrinogen, fibrin fragment D, prothrombin time, Kaolin-Cephalin Coagulation Time), and contributing parameters (C-reactive protein and total cholesterol), were assessed. In comparison to the control group, the experimental group showed significant improvements in all evaluated measures (p < 0.001).","source_id":"source_5","support_kind":"candidate_source_row"}]},{"claim_id":"claim_16","claim":"| Evidence domain | Corpus slice | Strongest signal | Directness | Main limitation |","citation_support":[],"candidate_sources":[{"study":"Physical Activity on Telomere Length as a Biomarker for Aging: A Systematic Review","year":2022,"doi":"10.1186/s40798-022-00503-1","url":"https://doi.org/10.1186/s40798-022-00503-1","population":"not extracted","intervention_or_exposure":"not extracted","comparator":"not extracted","endpoint":"not extracted","effect":"not extracted","risk_of_bias":"not appraised in public sidecar","directness":"review-level","excerpt":"BACKGROUND: Overall life expectancy continues to rise, approaching 80 years of age in several developed countries. However, healthy life expectancy lags far behind, which has, in turn, contributed to increasing costs in healthcare. One way to improve health and attenuate the socio-economic impact of an aging population is to increase overall fitness through physical activity. Telomere attrition or shortening is a well-known molecular marker in aging. As such, several studies have focused on whether exercise influences health and aging through telomere biology. This systematic review examines the recent literature on the effect of physical activity on telomere length (TL) and/or telomerase activity as molecular markers of aging. METHODS: A focused search was performed in the databases PubMed and Web of Science for retrieving relevant articles over the past ten years. The search contained the following keywords: exercise, sport, physical activity, fitness, sedentary, physical inactivity, telomere, telomere length, t/s ratio, and telomerase. PRISMA guidelines for systematic reviews were observed.","source_id":"source_1","support_kind":"candidate_source_row"},{"study":"The benefits of regular aerobic exercise training on cerebrovascular function and cognition in older adults","year":2023,"doi":"10.1007/s00421-023-05154-y","url":"https://doi.org/10.1007/s00421-023-05154-y","population":"not extracted","intervention_or_exposure":"not extracted","comparator":"not extracted","endpoint":"not extracted","effect":"not extracted","risk_of_bias":"not appraised in public sidecar","directness":"primary","excerpt":"We compared the differences in cerebrovascular and cognitive function between 13 aerobic exercise trained, older adults and 13 age-, height- and sex-matched sedentary, untrained controls. We determined whether other measures accounted for differences in cerebrovascular and cognitive function between these groups and examined the associations between these functions. Participants undertook anthropometric, mood, cardiovascular, exercise performance, strength, cerebrovascular, and cognitive measurements, and a blood collection. Transcranial Doppler ultrasonography determined cerebrovascular responsiveness (CVR) to hypercapnia and cognitive stimuli. The trained group had a higher CVR to hypercapnia (80.3 ± 7.2 vs 35.1 ± 6.7%, P < 0.001), CVR to cognitive stimuli (30.1 ± 2.9 vs 17.8 ± 1.4%, P = 0.001) and total composite cognitive score (117 ± 2 vs 98 ± 4, P < 0.001) than the controls. These parameters no longer remained statistically different between the groups following adjustments for covariates. There were positive correlations between the total composite cognitive score and CVR to hypercapnia (r = 0.474, P = 0.014) and CVR to cognitive stimuli (r = 0.685, P < 0.001).","source_id":"source_2","support_kind":"candidate_source_row"},{"study":"Home-based high-intensity interval training improves cardiorespiratory fitness: a systematic review and meta-analysis","year":2023,"doi":"10.1186/s13102-023-00777-2","url":"https://doi.org/10.1186/s13102-023-00777-2","population":"not extracted","intervention_or_exposure":"not extracted","comparator":"not extracted","endpoint":"not extracted","effect":"not extracted","risk_of_bias":"not appraised in public sidecar","directness":"review-level","excerpt":"BACKGROUND: High-intensity interval training (HIIT) is an effective methods to improve maximal oxygen uptake. However, there is no definitive conclusion about the specific effectiveness of home-based HIIT. This review investigated the effects of home-based HIIT on cardiorespiratory fitness in a systematic review and meta-analysis. METHODS: Four electronic databases were searched (PubMed, Cochran database, Web of Science, Igaku Chuo Zasshi) for studies through March 25, 2023. Eligibility criteria include randomized controlled trials of home-based HIIT in adult people regardless disease or handicaped. Comparisons were made between non-exercise controls, laboratory-based HIIT, and moderate-intensity continuous training (MICT). The primary outcome was defined as cardiorespiratory fitness and the secondary outcome was defined as patient-reported outcomes. The standardized mean difference (SMD) with 95% confidence intervals (CIs) was calculated for quantitative indices. The random-effect model was used as the pooling method. RESULTS: Two hundred seven studies were identified, and 15 satisfied the inclusion criteria.","source_id":"source_3","support_kind":"candidate_source_row"},{"study":"Post‐exercise hot water immersion enhances haemodynamic and vascular benefits of exercise without further improving cardiorespiratory fitness, glucose, lipids or inflammation","year":2025,"doi":"10.1113/JP288873","url":"https://doi.org/10.1113/JP288873","population":"not extracted","intervention_or_exposure":"not extracted","comparator":"not extracted","endpoint":"not extracted","effect":"not extracted","risk_of_bias":"not appraised in public sidecar","directness":"primary","excerpt":"There is considerable overlap between the mechanisms underlying the health benefits of exercise training and heat therapy. However, it remains unclear whether combining heat therapy with exercise can enhance improvements in cardiovascular and metabolic health. The present study investigated whether post-exercise hot water immersion (EX+HWI) could augment improvements in cardiorespiratory fitness, cardiovascular and metabolic health compared to post-exercise thermoneutral water immersion (EX+TWI). Twenty-four physically inactive middle-aged adults (age: 58 ± 5 years; body mass index: 28 ± 3 kg m - 2 ; 13 females) were randomly allocated to 8 weeks of supervised EX+HWI (n = 12) or EX+TWI (n = 12). Moderate-intensity aerobic exercise (65-75% maximum heart rate) was performed for 30 min followed by 30 min of immersion at 40°C or 34°C, two to four times per week (total 24 sessions). Cardiorespiratory fitness, brachial artery flow-mediated dilatation, aortic pulse wave velocity, blood pressure and circulating lipids, glucose and inflammatory markers were assessed pre- and post-intervention.","source_id":"source_4","support_kind":"candidate_source_row"},{"study":"Effect of exercise training with laser phototherapy on homeostasis balance resistant to hypercoagulability in seniors with obesity: a randomized trial","year":2023,"doi":"10.1038/s41598-023-30550-x","url":"https://doi.org/10.1038/s41598-023-30550-x","population":"not extracted","intervention_or_exposure":"not extracted","comparator":"not extracted","endpoint":"not extracted","effect":"not extracted","risk_of_bias":"not appraised in public sidecar","directness":"primary","excerpt":"The prevalence of obesity has increased the incidence of obesity-related coagulation disorders. The current study assessed the effectiveness of combined aerobic exercise and laser phototherapy on the coagulation profile and body measurements in older adults with obesity compared to aerobic exercise alone, which has not been adequately explored. We included 76 obese people (50% women and 50% men) with a mean age of 67.83 ± 4.84 years and a body mass index of 34.55 ± 2.67 kg/m 2 . The participants were randomly assigned to the experimental group (which received aerobic training with laser phototherapy) and the control group (which received aerobic training alone) for three months. From the baseline to the final analysis, the absolute changes in specific coagulation biomarker levels (fibrinogen, fibrin fragment D, prothrombin time, Kaolin-Cephalin Coagulation Time), and contributing parameters (C-reactive protein and total cholesterol), were assessed. In comparison to the control group, the experimental group showed significant improvements in all evaluated measures (p < 0.001).","source_id":"source_5","support_kind":"candidate_source_row"}]},{"claim_id":"claim_17","claim":"| Contextual Adjacent Evidence | n=18; claims=1101 | no extracted directional signal in 11/18 sources | 13 indirect; 5 review | limited corpus depth in this outcome class |","citation_support":[],"candidate_sources":[{"study":"Physical Activity on Telomere Length as a Biomarker for Aging: A Systematic Review","year":2022,"doi":"10.1186/s40798-022-00503-1","url":"https://doi.org/10.1186/s40798-022-00503-1","population":"not extracted","intervention_or_exposure":"not extracted","comparator":"not extracted","endpoint":"not extracted","effect":"not extracted","risk_of_bias":"not appraised in public sidecar","directness":"review-level","excerpt":"BACKGROUND: Overall life expectancy continues to rise, approaching 80 years of age in several developed countries. However, healthy life expectancy lags far behind, which has, in turn, contributed to increasing costs in healthcare. One way to improve health and attenuate the socio-economic impact of an aging population is to increase overall fitness through physical activity. Telomere attrition or shortening is a well-known molecular marker in aging. As such, several studies have focused on whether exercise influences health and aging through telomere biology. This systematic review examines the recent literature on the effect of physical activity on telomere length (TL) and/or telomerase activity as molecular markers of aging. METHODS: A focused search was performed in the databases PubMed and Web of Science for retrieving relevant articles over the past ten years. The search contained the following keywords: exercise, sport, physical activity, fitness, sedentary, physical inactivity, telomere, telomere length, t/s ratio, and telomerase. PRISMA guidelines for systematic reviews were observed.","source_id":"source_1","support_kind":"candidate_source_row"},{"study":"The benefits of regular aerobic exercise training on cerebrovascular function and cognition in older adults","year":2023,"doi":"10.1007/s00421-023-05154-y","url":"https://doi.org/10.1007/s00421-023-05154-y","population":"not extracted","intervention_or_exposure":"not extracted","comparator":"not extracted","endpoint":"not extracted","effect":"not extracted","risk_of_bias":"not appraised in public sidecar","directness":"primary","excerpt":"We compared the differences in cerebrovascular and cognitive function between 13 aerobic exercise trained, older adults and 13 age-, height- and sex-matched sedentary, untrained controls. We determined whether other measures accounted for differences in cerebrovascular and cognitive function between these groups and examined the associations between these functions. Participants undertook anthropometric, mood, cardiovascular, exercise performance, strength, cerebrovascular, and cognitive measurements, and a blood collection. Transcranial Doppler ultrasonography determined cerebrovascular responsiveness (CVR) to hypercapnia and cognitive stimuli. The trained group had a higher CVR to hypercapnia (80.3 ± 7.2 vs 35.1 ± 6.7%, P < 0.001), CVR to cognitive stimuli (30.1 ± 2.9 vs 17.8 ± 1.4%, P = 0.001) and total composite cognitive score (117 ± 2 vs 98 ± 4, P < 0.001) than the controls. These parameters no longer remained statistically different between the groups following adjustments for covariates. There were positive correlations between the total composite cognitive score and CVR to hypercapnia (r = 0.474, P = 0.014) and CVR to cognitive stimuli (r = 0.685, P < 0.001).","source_id":"source_2","support_kind":"candidate_source_row"},{"study":"Home-based high-intensity interval training improves cardiorespiratory fitness: a systematic review and meta-analysis","year":2023,"doi":"10.1186/s13102-023-00777-2","url":"https://doi.org/10.1186/s13102-023-00777-2","population":"not extracted","intervention_or_exposure":"not extracted","comparator":"not extracted","endpoint":"not extracted","effect":"not extracted","risk_of_bias":"not appraised in public sidecar","directness":"review-level","excerpt":"BACKGROUND: High-intensity interval training (HIIT) is an effective methods to improve maximal oxygen uptake. However, there is no definitive conclusion about the specific effectiveness of home-based HIIT. This review investigated the effects of home-based HIIT on cardiorespiratory fitness in a systematic review and meta-analysis. METHODS: Four electronic databases were searched (PubMed, Cochran database, Web of Science, Igaku Chuo Zasshi) for studies through March 25, 2023. Eligibility criteria include randomized controlled trials of home-based HIIT in adult people regardless disease or handicaped. Comparisons were made between non-exercise controls, laboratory-based HIIT, and moderate-intensity continuous training (MICT). The primary outcome was defined as cardiorespiratory fitness and the secondary outcome was defined as patient-reported outcomes. The standardized mean difference (SMD) with 95% confidence intervals (CIs) was calculated for quantitative indices. The random-effect model was used as the pooling method. RESULTS: Two hundred seven studies were identified, and 15 satisfied the inclusion criteria.","source_id":"source_3","support_kind":"candidate_source_row"},{"study":"Post‐exercise hot water immersion enhances haemodynamic and vascular benefits of exercise without further improving cardiorespiratory fitness, glucose, lipids or inflammation","year":2025,"doi":"10.1113/JP288873","url":"https://doi.org/10.1113/JP288873","population":"not extracted","intervention_or_exposure":"not extracted","comparator":"not extracted","endpoint":"not extracted","effect":"not extracted","risk_of_bias":"not appraised in public sidecar","directness":"primary","excerpt":"There is considerable overlap between the mechanisms underlying the health benefits of exercise training and heat therapy. However, it remains unclear whether combining heat therapy with exercise can enhance improvements in cardiovascular and metabolic health. The present study investigated whether post-exercise hot water immersion (EX+HWI) could augment improvements in cardiorespiratory fitness, cardiovascular and metabolic health compared to post-exercise thermoneutral water immersion (EX+TWI). Twenty-four physically inactive middle-aged adults (age: 58 ± 5 years; body mass index: 28 ± 3 kg m - 2 ; 13 females) were randomly allocated to 8 weeks of supervised EX+HWI (n = 12) or EX+TWI (n = 12). Moderate-intensity aerobic exercise (65-75% maximum heart rate) was performed for 30 min followed by 30 min of immersion at 40°C or 34°C, two to four times per week (total 24 sessions). Cardiorespiratory fitness, brachial artery flow-mediated dilatation, aortic pulse wave velocity, blood pressure and circulating lipids, glucose and inflammatory markers were assessed pre- and post-intervention.","source_id":"source_4","support_kind":"candidate_source_row"},{"study":"Effect of exercise training with laser phototherapy on homeostasis balance resistant to hypercoagulability in seniors with obesity: a randomized trial","year":2023,"doi":"10.1038/s41598-023-30550-x","url":"https://doi.org/10.1038/s41598-023-30550-x","population":"not extracted","intervention_or_exposure":"not extracted","comparator":"not extracted","endpoint":"not extracted","effect":"not extracted","risk_of_bias":"not appraised in public sidecar","directness":"primary","excerpt":"The prevalence of obesity has increased the incidence of obesity-related coagulation disorders. The current study assessed the effectiveness of combined aerobic exercise and laser phototherapy on the coagulation profile and body measurements in older adults with obesity compared to aerobic exercise alone, which has not been adequately explored. We included 76 obese people (50% women and 50% men) with a mean age of 67.83 ± 4.84 years and a body mass index of 34.55 ± 2.67 kg/m 2 . The participants were randomly assigned to the experimental group (which received aerobic training with laser phototherapy) and the control group (which received aerobic training alone) for three months. From the baseline to the final analysis, the absolute changes in specific coagulation biomarker levels (fibrinogen, fibrin fragment D, prothrombin time, Kaolin-Cephalin Coagulation Time), and contributing parameters (C-reactive protein and total cholesterol), were assessed. In comparison to the control group, the experimental group showed significant improvements in all evaluated measures (p < 0.001).","source_id":"source_5","support_kind":"candidate_source_row"}]},{"claim_id":"claim_18","claim":"Outcome-class note:** Contextual Adjacent Evidence denotes background, boundary-condition, or adjacent-outcome sources. It is not pooled with direct outcome evidence; these sources bound scope, safety, methods, and translation rather than serving as equal-weight support for the main efficacy claim.","citation_support":[],"candidate_sources":[{"study":"Physical Activity on Telomere Length as a Biomarker for Aging: A Systematic Review","year":2022,"doi":"10.1186/s40798-022-00503-1","url":"https://doi.org/10.1186/s40798-022-00503-1","population":"not extracted","intervention_or_exposure":"not extracted","comparator":"not extracted","endpoint":"not extracted","effect":"not extracted","risk_of_bias":"not appraised in public sidecar","directness":"review-level","excerpt":"BACKGROUND: Overall life expectancy continues to rise, approaching 80 years of age in several developed countries. However, healthy life expectancy lags far behind, which has, in turn, contributed to increasing costs in healthcare. One way to improve health and attenuate the socio-economic impact of an aging population is to increase overall fitness through physical activity. Telomere attrition or shortening is a well-known molecular marker in aging. As such, several studies have focused on whether exercise influences health and aging through telomere biology. This systematic review examines the recent literature on the effect of physical activity on telomere length (TL) and/or telomerase activity as molecular markers of aging. METHODS: A focused search was performed in the databases PubMed and Web of Science for retrieving relevant articles over the past ten years. The search contained the following keywords: exercise, sport, physical activity, fitness, sedentary, physical inactivity, telomere, telomere length, t/s ratio, and telomerase. PRISMA guidelines for systematic reviews were observed.","source_id":"source_1","support_kind":"candidate_source_row"},{"study":"The benefits of regular aerobic exercise training on cerebrovascular function and cognition in older adults","year":2023,"doi":"10.1007/s00421-023-05154-y","url":"https://doi.org/10.1007/s00421-023-05154-y","population":"not extracted","intervention_or_exposure":"not extracted","comparator":"not extracted","endpoint":"not extracted","effect":"not extracted","risk_of_bias":"not appraised in public sidecar","directness":"primary","excerpt":"We compared the differences in cerebrovascular and cognitive function between 13 aerobic exercise trained, older adults and 13 age-, height- and sex-matched sedentary, untrained controls. We determined whether other measures accounted for differences in cerebrovascular and cognitive function between these groups and examined the associations between these functions. Participants undertook anthropometric, mood, cardiovascular, exercise performance, strength, cerebrovascular, and cognitive measurements, and a blood collection. Transcranial Doppler ultrasonography determined cerebrovascular responsiveness (CVR) to hypercapnia and cognitive stimuli. The trained group had a higher CVR to hypercapnia (80.3 ± 7.2 vs 35.1 ± 6.7%, P < 0.001), CVR to cognitive stimuli (30.1 ± 2.9 vs 17.8 ± 1.4%, P = 0.001) and total composite cognitive score (117 ± 2 vs 98 ± 4, P < 0.001) than the controls. These parameters no longer remained statistically different between the groups following adjustments for covariates. There were positive correlations between the total composite cognitive score and CVR to hypercapnia (r = 0.474, P = 0.014) and CVR to cognitive stimuli (r = 0.685, P < 0.001).","source_id":"source_2","support_kind":"candidate_source_row"},{"study":"Home-based high-intensity interval training improves cardiorespiratory fitness: a systematic review and meta-analysis","year":2023,"doi":"10.1186/s13102-023-00777-2","url":"https://doi.org/10.1186/s13102-023-00777-2","population":"not extracted","intervention_or_exposure":"not extracted","comparator":"not extracted","endpoint":"not extracted","effect":"not extracted","risk_of_bias":"not appraised in public sidecar","directness":"review-level","excerpt":"BACKGROUND: High-intensity interval training (HIIT) is an effective methods to improve maximal oxygen uptake. However, there is no definitive conclusion about the specific effectiveness of home-based HIIT. This review investigated the effects of home-based HIIT on cardiorespiratory fitness in a systematic review and meta-analysis. METHODS: Four electronic databases were searched (PubMed, Cochran database, Web of Science, Igaku Chuo Zasshi) for studies through March 25, 2023. Eligibility criteria include randomized controlled trials of home-based HIIT in adult people regardless disease or handicaped. Comparisons were made between non-exercise controls, laboratory-based HIIT, and moderate-intensity continuous training (MICT). The primary outcome was defined as cardiorespiratory fitness and the secondary outcome was defined as patient-reported outcomes. The standardized mean difference (SMD) with 95% confidence intervals (CIs) was calculated for quantitative indices. The random-effect model was used as the pooling method. RESULTS: Two hundred seven studies were identified, and 15 satisfied the inclusion criteria.","source_id":"source_3","support_kind":"candidate_source_row"},{"study":"Post‐exercise hot water immersion enhances haemodynamic and vascular benefits of exercise without further improving cardiorespiratory fitness, glucose, lipids or inflammation","year":2025,"doi":"10.1113/JP288873","url":"https://doi.org/10.1113/JP288873","population":"not extracted","intervention_or_exposure":"not extracted","comparator":"not extracted","endpoint":"not extracted","effect":"not extracted","risk_of_bias":"not appraised in public sidecar","directness":"primary","excerpt":"There is considerable overlap between the mechanisms underlying the health benefits of exercise training and heat therapy. However, it remains unclear whether combining heat therapy with exercise can enhance improvements in cardiovascular and metabolic health. The present study investigated whether post-exercise hot water immersion (EX+HWI) could augment improvements in cardiorespiratory fitness, cardiovascular and metabolic health compared to post-exercise thermoneutral water immersion (EX+TWI). Twenty-four physically inactive middle-aged adults (age: 58 ± 5 years; body mass index: 28 ± 3 kg m - 2 ; 13 females) were randomly allocated to 8 weeks of supervised EX+HWI (n = 12) or EX+TWI (n = 12). Moderate-intensity aerobic exercise (65-75% maximum heart rate) was performed for 30 min followed by 30 min of immersion at 40°C or 34°C, two to four times per week (total 24 sessions). Cardiorespiratory fitness, brachial artery flow-mediated dilatation, aortic pulse wave velocity, blood pressure and circulating lipids, glucose and inflammatory markers were assessed pre- and post-intervention.","source_id":"source_4","support_kind":"candidate_source_row"},{"study":"Effect of exercise training with laser phototherapy on homeostasis balance resistant to hypercoagulability in seniors with obesity: a randomized trial","year":2023,"doi":"10.1038/s41598-023-30550-x","url":"https://doi.org/10.1038/s41598-023-30550-x","population":"not extracted","intervention_or_exposure":"not extracted","comparator":"not extracted","endpoint":"not extracted","effect":"not extracted","risk_of_bias":"not appraised in public sidecar","directness":"primary","excerpt":"The prevalence of obesity has increased the incidence of obesity-related coagulation disorders. The current study assessed the effectiveness of combined aerobic exercise and laser phototherapy on the coagulation profile and body measurements in older adults with obesity compared to aerobic exercise alone, which has not been adequately explored. We included 76 obese people (50% women and 50% men) with a mean age of 67.83 ± 4.84 years and a body mass index of 34.55 ± 2.67 kg/m 2 . The participants were randomly assigned to the experimental group (which received aerobic training with laser phototherapy) and the control group (which received aerobic training alone) for three months. From the baseline to the final analysis, the absolute changes in specific coagulation biomarker levels (fibrinogen, fibrin fragment D, prothrombin time, Kaolin-Cephalin Coagulation Time), and contributing parameters (C-reactive protein and total cholesterol), were assessed. In comparison to the control group, the experimental group showed significant improvements in all evaluated measures (p < 0.001).","source_id":"source_5","support_kind":"candidate_source_row"}]},{"claim_id":"claim_19","claim":"Mechanistically, the three clinical or quasi-clinical sources speak to overlapping but non-identical cardiometabolic pathways. Steward 2025 isolates vascular and haemodynamic reactivity as the substrate responsive to thermal augmentation, leaving the canonical cardiometabolic risk markers (glucose, lipids, inflammation, fitness) unchanged beyond exercise itself. Elsayed 2023 implicates the coagulation-fibrinolysis axis, with laser phototherapy modulating hypercoagulability markers in obese seniors. Huang 2025 mechanistically grounds the body-fat signal in modality-specific energy expenditure and substrate utilization, where aerobic training exceeds resistance and combined regimens in sedentary adults. Preclinical and mechanistic data therefore support multiple distinct biological handles, while the human clinical RCT-level evidence for any single handle remains narrow.","citation_support":[],"candidate_sources":[{"study":"Physical Activity on Telomere Length as a Biomarker for Aging: A Systematic Review","year":2022,"doi":"10.1186/s40798-022-00503-1","url":"https://doi.org/10.1186/s40798-022-00503-1","population":"not extracted","intervention_or_exposure":"not extracted","comparator":"not extracted","endpoint":"not extracted","effect":"not extracted","risk_of_bias":"not appraised in public sidecar","directness":"review-level","excerpt":"BACKGROUND: Overall life expectancy continues to rise, approaching 80 years of age in several developed countries. However, healthy life expectancy lags far behind, which has, in turn, contributed to increasing costs in healthcare. One way to improve health and attenuate the socio-economic impact of an aging population is to increase overall fitness through physical activity. Telomere attrition or shortening is a well-known molecular marker in aging. As such, several studies have focused on whether exercise influences health and aging through telomere biology. This systematic review examines the recent literature on the effect of physical activity on telomere length (TL) and/or telomerase activity as molecular markers of aging. METHODS: A focused search was performed in the databases PubMed and Web of Science for retrieving relevant articles over the past ten years. The search contained the following keywords: exercise, sport, physical activity, fitness, sedentary, physical inactivity, telomere, telomere length, t/s ratio, and telomerase. PRISMA guidelines for systematic reviews were observed.","source_id":"source_1","support_kind":"candidate_source_row"},{"study":"The benefits of regular aerobic exercise training on cerebrovascular function and cognition in older adults","year":2023,"doi":"10.1007/s00421-023-05154-y","url":"https://doi.org/10.1007/s00421-023-05154-y","population":"not extracted","intervention_or_exposure":"not extracted","comparator":"not extracted","endpoint":"not extracted","effect":"not extracted","risk_of_bias":"not appraised in public sidecar","directness":"primary","excerpt":"We compared the differences in cerebrovascular and cognitive function between 13 aerobic exercise trained, older adults and 13 age-, height- and sex-matched sedentary, untrained controls. We determined whether other measures accounted for differences in cerebrovascular and cognitive function between these groups and examined the associations between these functions. Participants undertook anthropometric, mood, cardiovascular, exercise performance, strength, cerebrovascular, and cognitive measurements, and a blood collection. Transcranial Doppler ultrasonography determined cerebrovascular responsiveness (CVR) to hypercapnia and cognitive stimuli. The trained group had a higher CVR to hypercapnia (80.3 ± 7.2 vs 35.1 ± 6.7%, P < 0.001), CVR to cognitive stimuli (30.1 ± 2.9 vs 17.8 ± 1.4%, P = 0.001) and total composite cognitive score (117 ± 2 vs 98 ± 4, P < 0.001) than the controls. These parameters no longer remained statistically different between the groups following adjustments for covariates. There were positive correlations between the total composite cognitive score and CVR to hypercapnia (r = 0.474, P = 0.014) and CVR to cognitive stimuli (r = 0.685, P < 0.001).","source_id":"source_2","support_kind":"candidate_source_row"},{"study":"Home-based high-intensity interval training improves cardiorespiratory fitness: a systematic review and meta-analysis","year":2023,"doi":"10.1186/s13102-023-00777-2","url":"https://doi.org/10.1186/s13102-023-00777-2","population":"not extracted","intervention_or_exposure":"not extracted","comparator":"not extracted","endpoint":"not extracted","effect":"not extracted","risk_of_bias":"not appraised in public sidecar","directness":"review-level","excerpt":"BACKGROUND: High-intensity interval training (HIIT) is an effective methods to improve maximal oxygen uptake. However, there is no definitive conclusion about the specific effectiveness of home-based HIIT. This review investigated the effects of home-based HIIT on cardiorespiratory fitness in a systematic review and meta-analysis. METHODS: Four electronic databases were searched (PubMed, Cochran database, Web of Science, Igaku Chuo Zasshi) for studies through March 25, 2023. Eligibility criteria include randomized controlled trials of home-based HIIT in adult people regardless disease or handicaped. Comparisons were made between non-exercise controls, laboratory-based HIIT, and moderate-intensity continuous training (MICT). The primary outcome was defined as cardiorespiratory fitness and the secondary outcome was defined as patient-reported outcomes. The standardized mean difference (SMD) with 95% confidence intervals (CIs) was calculated for quantitative indices. The random-effect model was used as the pooling method. RESULTS: Two hundred seven studies were identified, and 15 satisfied the inclusion criteria.","source_id":"source_3","support_kind":"candidate_source_row"},{"study":"Post‐exercise hot water immersion enhances haemodynamic and vascular benefits of exercise without further improving cardiorespiratory fitness, glucose, lipids or inflammation","year":2025,"doi":"10.1113/JP288873","url":"https://doi.org/10.1113/JP288873","population":"not extracted","intervention_or_exposure":"not extracted","comparator":"not extracted","endpoint":"not extracted","effect":"not extracted","risk_of_bias":"not appraised in public sidecar","directness":"primary","excerpt":"There is considerable overlap between the mechanisms underlying the health benefits of exercise training and heat therapy. However, it remains unclear whether combining heat therapy with exercise can enhance improvements in cardiovascular and metabolic health. The present study investigated whether post-exercise hot water immersion (EX+HWI) could augment improvements in cardiorespiratory fitness, cardiovascular and metabolic health compared to post-exercise thermoneutral water immersion (EX+TWI). Twenty-four physically inactive middle-aged adults (age: 58 ± 5 years; body mass index: 28 ± 3 kg m - 2 ; 13 females) were randomly allocated to 8 weeks of supervised EX+HWI (n = 12) or EX+TWI (n = 12). Moderate-intensity aerobic exercise (65-75% maximum heart rate) was performed for 30 min followed by 30 min of immersion at 40°C or 34°C, two to four times per week (total 24 sessions). Cardiorespiratory fitness, brachial artery flow-mediated dilatation, aortic pulse wave velocity, blood pressure and circulating lipids, glucose and inflammatory markers were assessed pre- and post-intervention.","source_id":"source_4","support_kind":"candidate_source_row"},{"study":"Effect of exercise training with laser phototherapy on homeostasis balance resistant to hypercoagulability in seniors with obesity: a randomized trial","year":2023,"doi":"10.1038/s41598-023-30550-x","url":"https://doi.org/10.1038/s41598-023-30550-x","population":"not extracted","intervention_or_exposure":"not extracted","comparator":"not extracted","endpoint":"not extracted","effect":"not extracted","risk_of_bias":"not appraised in public sidecar","directness":"primary","excerpt":"The prevalence of obesity has increased the incidence of obesity-related coagulation disorders. The current study assessed the effectiveness of combined aerobic exercise and laser phototherapy on the coagulation profile and body measurements in older adults with obesity compared to aerobic exercise alone, which has not been adequately explored. We included 76 obese people (50% women and 50% men) with a mean age of 67.83 ± 4.84 years and a body mass index of 34.55 ± 2.67 kg/m 2 . The participants were randomly assigned to the experimental group (which received aerobic training with laser phototherapy) and the control group (which received aerobic training alone) for three months. From the baseline to the final analysis, the absolute changes in specific coagulation biomarker levels (fibrinogen, fibrin fragment D, prothrombin time, Kaolin-Cephalin Coagulation Time), and contributing parameters (C-reactive protein and total cholesterol), were assessed. In comparison to the control group, the experimental group showed significant improvements in all evaluated measures (p < 0.001).","source_id":"source_5","support_kind":"candidate_source_row"}]},{"claim_id":"claim_20","claim":"Within-corpus tensions are most visible in the cardiometabolic class. Steward 2025 and Donath 2017 (severity 3) also disagree on whether adjunctive stimuli shift cardiometabolic status, with Donath 2017 finding no cardiometabolic perturbation from acute aerobic exercise. Together these tensions suggest that the cardiometabolic case for aerobic exercise is boundary-condition-dependent, modulated by population (sedentary vs active, obese vs normal-weight), modality (aerobic alone vs aerobic + heat or phototherapy), and endpoint class (vascular reactivity vs coagulation vs body composition).","citation_support":[],"candidate_sources":[{"study":"Physical Activity on Telomere Length as a Biomarker for Aging: A Systematic Review","year":2022,"doi":"10.1186/s40798-022-00503-1","url":"https://doi.org/10.1186/s40798-022-00503-1","population":"not extracted","intervention_or_exposure":"not extracted","comparator":"not extracted","endpoint":"not extracted","effect":"not extracted","risk_of_bias":"not appraised in public sidecar","directness":"review-level","excerpt":"BACKGROUND: Overall life expectancy continues to rise, approaching 80 years of age in several developed countries. However, healthy life expectancy lags far behind, which has, in turn, contributed to increasing costs in healthcare. One way to improve health and attenuate the socio-economic impact of an aging population is to increase overall fitness through physical activity. Telomere attrition or shortening is a well-known molecular marker in aging. As such, several studies have focused on whether exercise influences health and aging through telomere biology. This systematic review examines the recent literature on the effect of physical activity on telomere length (TL) and/or telomerase activity as molecular markers of aging. METHODS: A focused search was performed in the databases PubMed and Web of Science for retrieving relevant articles over the past ten years. The search contained the following keywords: exercise, sport, physical activity, fitness, sedentary, physical inactivity, telomere, telomere length, t/s ratio, and telomerase. PRISMA guidelines for systematic reviews were observed.","source_id":"source_1","support_kind":"candidate_source_row"},{"study":"The benefits of regular aerobic exercise training on cerebrovascular function and cognition in older adults","year":2023,"doi":"10.1007/s00421-023-05154-y","url":"https://doi.org/10.1007/s00421-023-05154-y","population":"not extracted","intervention_or_exposure":"not extracted","comparator":"not extracted","endpoint":"not extracted","effect":"not extracted","risk_of_bias":"not appraised in public sidecar","directness":"primary","excerpt":"We compared the differences in cerebrovascular and cognitive function between 13 aerobic exercise trained, older adults and 13 age-, height- and sex-matched sedentary, untrained controls. We determined whether other measures accounted for differences in cerebrovascular and cognitive function between these groups and examined the associations between these functions. Participants undertook anthropometric, mood, cardiovascular, exercise performance, strength, cerebrovascular, and cognitive measurements, and a blood collection. Transcranial Doppler ultrasonography determined cerebrovascular responsiveness (CVR) to hypercapnia and cognitive stimuli. The trained group had a higher CVR to hypercapnia (80.3 ± 7.2 vs 35.1 ± 6.7%, P < 0.001), CVR to cognitive stimuli (30.1 ± 2.9 vs 17.8 ± 1.4%, P = 0.001) and total composite cognitive score (117 ± 2 vs 98 ± 4, P < 0.001) than the controls. These parameters no longer remained statistically different between the groups following adjustments for covariates. There were positive correlations between the total composite cognitive score and CVR to hypercapnia (r = 0.474, P = 0.014) and CVR to cognitive stimuli (r = 0.685, P < 0.001).","source_id":"source_2","support_kind":"candidate_source_row"},{"study":"Home-based high-intensity interval training improves cardiorespiratory fitness: a systematic review and meta-analysis","year":2023,"doi":"10.1186/s13102-023-00777-2","url":"https://doi.org/10.1186/s13102-023-00777-2","population":"not extracted","intervention_or_exposure":"not extracted","comparator":"not extracted","endpoint":"not extracted","effect":"not extracted","risk_of_bias":"not appraised in public sidecar","directness":"review-level","excerpt":"BACKGROUND: High-intensity interval training (HIIT) is an effective methods to improve maximal oxygen uptake. However, there is no definitive conclusion about the specific effectiveness of home-based HIIT. This review investigated the effects of home-based HIIT on cardiorespiratory fitness in a systematic review and meta-analysis. METHODS: Four electronic databases were searched (PubMed, Cochran database, Web of Science, Igaku Chuo Zasshi) for studies through March 25, 2023. Eligibility criteria include randomized controlled trials of home-based HIIT in adult people regardless disease or handicaped. Comparisons were made between non-exercise controls, laboratory-based HIIT, and moderate-intensity continuous training (MICT). The primary outcome was defined as cardiorespiratory fitness and the secondary outcome was defined as patient-reported outcomes. The standardized mean difference (SMD) with 95% confidence intervals (CIs) was calculated for quantitative indices. The random-effect model was used as the pooling method. RESULTS: Two hundred seven studies were identified, and 15 satisfied the inclusion criteria.","source_id":"source_3","support_kind":"candidate_source_row"},{"study":"Post‐exercise hot water immersion enhances haemodynamic and vascular benefits of exercise without further improving cardiorespiratory fitness, glucose, lipids or inflammation","year":2025,"doi":"10.1113/JP288873","url":"https://doi.org/10.1113/JP288873","population":"not extracted","intervention_or_exposure":"not extracted","comparator":"not extracted","endpoint":"not extracted","effect":"not extracted","risk_of_bias":"not appraised in public sidecar","directness":"primary","excerpt":"There is considerable overlap between the mechanisms underlying the health benefits of exercise training and heat therapy. However, it remains unclear whether combining heat therapy with exercise can enhance improvements in cardiovascular and metabolic health. The present study investigated whether post-exercise hot water immersion (EX+HWI) could augment improvements in cardiorespiratory fitness, cardiovascular and metabolic health compared to post-exercise thermoneutral water immersion (EX+TWI). Twenty-four physically inactive middle-aged adults (age: 58 ± 5 years; body mass index: 28 ± 3 kg m - 2 ; 13 females) were randomly allocated to 8 weeks of supervised EX+HWI (n = 12) or EX+TWI (n = 12). Moderate-intensity aerobic exercise (65-75% maximum heart rate) was performed for 30 min followed by 30 min of immersion at 40°C or 34°C, two to four times per week (total 24 sessions). Cardiorespiratory fitness, brachial artery flow-mediated dilatation, aortic pulse wave velocity, blood pressure and circulating lipids, glucose and inflammatory markers were assessed pre- and post-intervention.","source_id":"source_4","support_kind":"candidate_source_row"},{"study":"Effect of exercise training with laser phototherapy on homeostasis balance resistant to hypercoagulability in seniors with obesity: a randomized trial","year":2023,"doi":"10.1038/s41598-023-30550-x","url":"https://doi.org/10.1038/s41598-023-30550-x","population":"not extracted","intervention_or_exposure":"not extracted","comparator":"not extracted","endpoint":"not extracted","effect":"not extracted","risk_of_bias":"not appraised in public sidecar","directness":"primary","excerpt":"The prevalence of obesity has increased the incidence of obesity-related coagulation disorders. The current study assessed the effectiveness of combined aerobic exercise and laser phototherapy on the coagulation profile and body measurements in older adults with obesity compared to aerobic exercise alone, which has not been adequately explored. We included 76 obese people (50% women and 50% men) with a mean age of 67.83 ± 4.84 years and a body mass index of 34.55 ± 2.67 kg/m 2 . The participants were randomly assigned to the experimental group (which received aerobic training with laser phototherapy) and the control group (which received aerobic training alone) for three months. From the baseline to the final analysis, the absolute changes in specific coagulation biomarker levels (fibrinogen, fibrin fragment D, prothrombin time, Kaolin-Cephalin Coagulation Time), and contributing parameters (C-reactive protein and total cholesterol), were assessed. In comparison to the control group, the experimental group showed significant improvements in all evaluated measures (p < 0.001).","source_id":"source_5","support_kind":"candidate_source_row"}]},{"claim_id":"claim_21","claim":"Eighteen of the curated sources populate the contextual/mixed outcome class, and together they paint a heterogeneous picture that resists a single net-direction summary. These three sources anchor the contextual/mixed class with human-RCT or systematic-review evidence and supply the high-density numeric spine of this subsection (see the evidence synthesis for the full per-study p-value inventory).","citation_support":[],"candidate_sources":[{"study":"Physical Activity on Telomere Length as a Biomarker for Aging: A Systematic Review","year":2022,"doi":"10.1186/s40798-022-00503-1","url":"https://doi.org/10.1186/s40798-022-00503-1","population":"not extracted","intervention_or_exposure":"not extracted","comparator":"not extracted","endpoint":"not extracted","effect":"not extracted","risk_of_bias":"not appraised in public sidecar","directness":"review-level","excerpt":"BACKGROUND: Overall life expectancy continues to rise, approaching 80 years of age in several developed countries. However, healthy life expectancy lags far behind, which has, in turn, contributed to increasing costs in healthcare. One way to improve health and attenuate the socio-economic impact of an aging population is to increase overall fitness through physical activity. Telomere attrition or shortening is a well-known molecular marker in aging. As such, several studies have focused on whether exercise influences health and aging through telomere biology. This systematic review examines the recent literature on the effect of physical activity on telomere length (TL) and/or telomerase activity as molecular markers of aging. METHODS: A focused search was performed in the databases PubMed and Web of Science for retrieving relevant articles over the past ten years. The search contained the following keywords: exercise, sport, physical activity, fitness, sedentary, physical inactivity, telomere, telomere length, t/s ratio, and telomerase. PRISMA guidelines for systematic reviews were observed.","source_id":"source_1","support_kind":"candidate_source_row"},{"study":"The benefits of regular aerobic exercise training on cerebrovascular function and cognition in older adults","year":2023,"doi":"10.1007/s00421-023-05154-y","url":"https://doi.org/10.1007/s00421-023-05154-y","population":"not extracted","intervention_or_exposure":"not extracted","comparator":"not extracted","endpoint":"not extracted","effect":"not extracted","risk_of_bias":"not appraised in public sidecar","directness":"primary","excerpt":"We compared the differences in cerebrovascular and cognitive function between 13 aerobic exercise trained, older adults and 13 age-, height- and sex-matched sedentary, untrained controls. We determined whether other measures accounted for differences in cerebrovascular and cognitive function between these groups and examined the associations between these functions. Participants undertook anthropometric, mood, cardiovascular, exercise performance, strength, cerebrovascular, and cognitive measurements, and a blood collection. Transcranial Doppler ultrasonography determined cerebrovascular responsiveness (CVR) to hypercapnia and cognitive stimuli. The trained group had a higher CVR to hypercapnia (80.3 ± 7.2 vs 35.1 ± 6.7%, P < 0.001), CVR to cognitive stimuli (30.1 ± 2.9 vs 17.8 ± 1.4%, P = 0.001) and total composite cognitive score (117 ± 2 vs 98 ± 4, P < 0.001) than the controls. These parameters no longer remained statistically different between the groups following adjustments for covariates. There were positive correlations between the total composite cognitive score and CVR to hypercapnia (r = 0.474, P = 0.014) and CVR to cognitive stimuli (r = 0.685, P < 0.001).","source_id":"source_2","support_kind":"candidate_source_row"},{"study":"Home-based high-intensity interval training improves cardiorespiratory fitness: a systematic review and meta-analysis","year":2023,"doi":"10.1186/s13102-023-00777-2","url":"https://doi.org/10.1186/s13102-023-00777-2","population":"not extracted","intervention_or_exposure":"not extracted","comparator":"not extracted","endpoint":"not extracted","effect":"not extracted","risk_of_bias":"not appraised in public sidecar","directness":"review-level","excerpt":"BACKGROUND: High-intensity interval training (HIIT) is an effective methods to improve maximal oxygen uptake. However, there is no definitive conclusion about the specific effectiveness of home-based HIIT. This review investigated the effects of home-based HIIT on cardiorespiratory fitness in a systematic review and meta-analysis. METHODS: Four electronic databases were searched (PubMed, Cochran database, Web of Science, Igaku Chuo Zasshi) for studies through March 25, 2023. Eligibility criteria include randomized controlled trials of home-based HIIT in adult people regardless disease or handicaped. Comparisons were made between non-exercise controls, laboratory-based HIIT, and moderate-intensity continuous training (MICT). The primary outcome was defined as cardiorespiratory fitness and the secondary outcome was defined as patient-reported outcomes. The standardized mean difference (SMD) with 95% confidence intervals (CIs) was calculated for quantitative indices. The random-effect model was used as the pooling method. RESULTS: Two hundred seven studies were identified, and 15 satisfied the inclusion criteria.","source_id":"source_3","support_kind":"candidate_source_row"},{"study":"Post‐exercise hot water immersion enhances haemodynamic and vascular benefits of exercise without further improving cardiorespiratory fitness, glucose, lipids or inflammation","year":2025,"doi":"10.1113/JP288873","url":"https://doi.org/10.1113/JP288873","population":"not extracted","intervention_or_exposure":"not extracted","comparator":"not extracted","endpoint":"not extracted","effect":"not extracted","risk_of_bias":"not appraised in public sidecar","directness":"primary","excerpt":"There is considerable overlap between the mechanisms underlying the health benefits of exercise training and heat therapy. However, it remains unclear whether combining heat therapy with exercise can enhance improvements in cardiovascular and metabolic health. The present study investigated whether post-exercise hot water immersion (EX+HWI) could augment improvements in cardiorespiratory fitness, cardiovascular and metabolic health compared to post-exercise thermoneutral water immersion (EX+TWI). Twenty-four physically inactive middle-aged adults (age: 58 ± 5 years; body mass index: 28 ± 3 kg m - 2 ; 13 females) were randomly allocated to 8 weeks of supervised EX+HWI (n = 12) or EX+TWI (n = 12). Moderate-intensity aerobic exercise (65-75% maximum heart rate) was performed for 30 min followed by 30 min of immersion at 40°C or 34°C, two to four times per week (total 24 sessions). Cardiorespiratory fitness, brachial artery flow-mediated dilatation, aortic pulse wave velocity, blood pressure and circulating lipids, glucose and inflammatory markers were assessed pre- and post-intervention.","source_id":"source_4","support_kind":"candidate_source_row"},{"study":"Effect of exercise training with laser phototherapy on homeostasis balance resistant to hypercoagulability in seniors with obesity: a randomized trial","year":2023,"doi":"10.1038/s41598-023-30550-x","url":"https://doi.org/10.1038/s41598-023-30550-x","population":"not extracted","intervention_or_exposure":"not extracted","comparator":"not extracted","endpoint":"not extracted","effect":"not extracted","risk_of_bias":"not appraised in public sidecar","directness":"primary","excerpt":"The prevalence of obesity has increased the incidence of obesity-related coagulation disorders. The current study assessed the effectiveness of combined aerobic exercise and laser phototherapy on the coagulation profile and body measurements in older adults with obesity compared to aerobic exercise alone, which has not been adequately explored. We included 76 obese people (50% women and 50% men) with a mean age of 67.83 ± 4.84 years and a body mass index of 34.55 ± 2.67 kg/m 2 . The participants were randomly assigned to the experimental group (which received aerobic training with laser phototherapy) and the control group (which received aerobic training alone) for three months. From the baseline to the final analysis, the absolute changes in specific coagulation biomarker levels (fibrinogen, fibrin fragment D, prothrombin time, Kaolin-Cephalin Coagulation Time), and contributing parameters (C-reactive protein and total cholesterol), were assessed. In comparison to the control group, the experimental group showed significant improvements in all evaluated measures (p < 0.001).","source_id":"source_5","support_kind":"candidate_source_row"}]},{"claim_id":"claim_22","claim":"The vascular-endothelial and arterial-stiffness sub-thread is dominated by null or directionally mixed findings despite robust continuous-aerobic RCT inputs. When read alongside Bull 2020, which articulates WHO 2000 physical-activity guidance rather than a primary endpoint, the vascular thread shows that statistical superiority versus sedentary comparators does not automatically translate into a positive verdict against active comparators — a recurrent pattern across the contextual/mixed class (Bull 2020; Tao 2023; You 2022).","citation_support":[],"candidate_sources":[{"study":"Physical Activity on Telomere Length as a Biomarker for Aging: A Systematic Review","year":2022,"doi":"10.1186/s40798-022-00503-1","url":"https://doi.org/10.1186/s40798-022-00503-1","population":"not extracted","intervention_or_exposure":"not extracted","comparator":"not extracted","endpoint":"not extracted","effect":"not extracted","risk_of_bias":"not appraised in public sidecar","directness":"review-level","excerpt":"BACKGROUND: Overall life expectancy continues to rise, approaching 80 years of age in several developed countries. However, healthy life expectancy lags far behind, which has, in turn, contributed to increasing costs in healthcare. One way to improve health and attenuate the socio-economic impact of an aging population is to increase overall fitness through physical activity. Telomere attrition or shortening is a well-known molecular marker in aging. As such, several studies have focused on whether exercise influences health and aging through telomere biology. This systematic review examines the recent literature on the effect of physical activity on telomere length (TL) and/or telomerase activity as molecular markers of aging. METHODS: A focused search was performed in the databases PubMed and Web of Science for retrieving relevant articles over the past ten years. The search contained the following keywords: exercise, sport, physical activity, fitness, sedentary, physical inactivity, telomere, telomere length, t/s ratio, and telomerase. PRISMA guidelines for systematic reviews were observed.","source_id":"source_1","support_kind":"candidate_source_row"},{"study":"The benefits of regular aerobic exercise training on cerebrovascular function and cognition in older adults","year":2023,"doi":"10.1007/s00421-023-05154-y","url":"https://doi.org/10.1007/s00421-023-05154-y","population":"not extracted","intervention_or_exposure":"not extracted","comparator":"not extracted","endpoint":"not extracted","effect":"not extracted","risk_of_bias":"not appraised in public sidecar","directness":"primary","excerpt":"We compared the differences in cerebrovascular and cognitive function between 13 aerobic exercise trained, older adults and 13 age-, height- and sex-matched sedentary, untrained controls. We determined whether other measures accounted for differences in cerebrovascular and cognitive function between these groups and examined the associations between these functions. Participants undertook anthropometric, mood, cardiovascular, exercise performance, strength, cerebrovascular, and cognitive measurements, and a blood collection. Transcranial Doppler ultrasonography determined cerebrovascular responsiveness (CVR) to hypercapnia and cognitive stimuli. The trained group had a higher CVR to hypercapnia (80.3 ± 7.2 vs 35.1 ± 6.7%, P < 0.001), CVR to cognitive stimuli (30.1 ± 2.9 vs 17.8 ± 1.4%, P = 0.001) and total composite cognitive score (117 ± 2 vs 98 ± 4, P < 0.001) than the controls. These parameters no longer remained statistically different between the groups following adjustments for covariates. There were positive correlations between the total composite cognitive score and CVR to hypercapnia (r = 0.474, P = 0.014) and CVR to cognitive stimuli (r = 0.685, P < 0.001).","source_id":"source_2","support_kind":"candidate_source_row"},{"study":"Home-based high-intensity interval training improves cardiorespiratory fitness: a systematic review and meta-analysis","year":2023,"doi":"10.1186/s13102-023-00777-2","url":"https://doi.org/10.1186/s13102-023-00777-2","population":"not extracted","intervention_or_exposure":"not extracted","comparator":"not extracted","endpoint":"not extracted","effect":"not extracted","risk_of_bias":"not appraised in public sidecar","directness":"review-level","excerpt":"BACKGROUND: High-intensity interval training (HIIT) is an effective methods to improve maximal oxygen uptake. However, there is no definitive conclusion about the specific effectiveness of home-based HIIT. This review investigated the effects of home-based HIIT on cardiorespiratory fitness in a systematic review and meta-analysis. METHODS: Four electronic databases were searched (PubMed, Cochran database, Web of Science, Igaku Chuo Zasshi) for studies through March 25, 2023. Eligibility criteria include randomized controlled trials of home-based HIIT in adult people regardless disease or handicaped. Comparisons were made between non-exercise controls, laboratory-based HIIT, and moderate-intensity continuous training (MICT). The primary outcome was defined as cardiorespiratory fitness and the secondary outcome was defined as patient-reported outcomes. The standardized mean difference (SMD) with 95% confidence intervals (CIs) was calculated for quantitative indices. The random-effect model was used as the pooling method. RESULTS: Two hundred seven studies were identified, and 15 satisfied the inclusion criteria.","source_id":"source_3","support_kind":"candidate_source_row"},{"study":"Post‐exercise hot water immersion enhances haemodynamic and vascular benefits of exercise without further improving cardiorespiratory fitness, glucose, lipids or inflammation","year":2025,"doi":"10.1113/JP288873","url":"https://doi.org/10.1113/JP288873","population":"not extracted","intervention_or_exposure":"not extracted","comparator":"not extracted","endpoint":"not extracted","effect":"not extracted","risk_of_bias":"not appraised in public sidecar","directness":"primary","excerpt":"There is considerable overlap between the mechanisms underlying the health benefits of exercise training and heat therapy. However, it remains unclear whether combining heat therapy with exercise can enhance improvements in cardiovascular and metabolic health. The present study investigated whether post-exercise hot water immersion (EX+HWI) could augment improvements in cardiorespiratory fitness, cardiovascular and metabolic health compared to post-exercise thermoneutral water immersion (EX+TWI). Twenty-four physically inactive middle-aged adults (age: 58 ± 5 years; body mass index: 28 ± 3 kg m - 2 ; 13 females) were randomly allocated to 8 weeks of supervised EX+HWI (n = 12) or EX+TWI (n = 12). Moderate-intensity aerobic exercise (65-75% maximum heart rate) was performed for 30 min followed by 30 min of immersion at 40°C or 34°C, two to four times per week (total 24 sessions). Cardiorespiratory fitness, brachial artery flow-mediated dilatation, aortic pulse wave velocity, blood pressure and circulating lipids, glucose and inflammatory markers were assessed pre- and post-intervention.","source_id":"source_4","support_kind":"candidate_source_row"},{"study":"Effect of exercise training with laser phototherapy on homeostasis balance resistant to hypercoagulability in seniors with obesity: a randomized trial","year":2023,"doi":"10.1038/s41598-023-30550-x","url":"https://doi.org/10.1038/s41598-023-30550-x","population":"not extracted","intervention_or_exposure":"not extracted","comparator":"not extracted","endpoint":"not extracted","effect":"not extracted","risk_of_bias":"not appraised in public sidecar","directness":"primary","excerpt":"The prevalence of obesity has increased the incidence of obesity-related coagulation disorders. The current study assessed the effectiveness of combined aerobic exercise and laser phototherapy on the coagulation profile and body measurements in older adults with obesity compared to aerobic exercise alone, which has not been adequately explored. We included 76 obese people (50% women and 50% men) with a mean age of 67.83 ± 4.84 years and a body mass index of 34.55 ± 2.67 kg/m 2 . The participants were randomly assigned to the experimental group (which received aerobic training with laser phototherapy) and the control group (which received aerobic training alone) for three months. From the baseline to the final analysis, the absolute changes in specific coagulation biomarker levels (fibrinogen, fibrin fragment D, prothrombin time, Kaolin-Cephalin Coagulation Time), and contributing parameters (C-reactive protein and total cholesterol), were assessed. In comparison to the control group, the experimental group showed significant improvements in all evaluated measures (p < 0.001).","source_id":"source_5","support_kind":"candidate_source_row"}]},{"claim_id":"claim_23","claim":"Salisbury 2023 is the only corpus study mapped to the dosing/pharmacokinetics outcome class for aerobic exercise, and it is positioned as an indirect observational cohort in adults rather than a clinical RCT [Salisbury 2023]. The study correlated changes in cardiorespiratory fitness (CRF) with resting plasma neurotrophic factors in the setting of Alzheimer's dementia, treating the exercise dose–response relationship as a biomarker-mapping exercise rather than a pharmacokinetic clearance study [Salisbury 2023]. The endpoint of interest is therefore the correspondence between training-dose surrogates and downstream neurotrophic signaling, not drug-style absorption or distribution [Salisbury 2023]. The synthesis classifies this evidence as indirect because the dosing construct is operationalized through change-in-CRF rather than a quantified exercise prescription [Salisbury 2023].","citation_support":[],"candidate_sources":[{"study":"Physical Activity on Telomere Length as a Biomarker for Aging: A Systematic Review","year":2022,"doi":"10.1186/s40798-022-00503-1","url":"https://doi.org/10.1186/s40798-022-00503-1","population":"not extracted","intervention_or_exposure":"not extracted","comparator":"not extracted","endpoint":"not extracted","effect":"not extracted","risk_of_bias":"not appraised in public sidecar","directness":"review-level","excerpt":"BACKGROUND: Overall life expectancy continues to rise, approaching 80 years of age in several developed countries. However, healthy life expectancy lags far behind, which has, in turn, contributed to increasing costs in healthcare. One way to improve health and attenuate the socio-economic impact of an aging population is to increase overall fitness through physical activity. Telomere attrition or shortening is a well-known molecular marker in aging. As such, several studies have focused on whether exercise influences health and aging through telomere biology. This systematic review examines the recent literature on the effect of physical activity on telomere length (TL) and/or telomerase activity as molecular markers of aging. METHODS: A focused search was performed in the databases PubMed and Web of Science for retrieving relevant articles over the past ten years. The search contained the following keywords: exercise, sport, physical activity, fitness, sedentary, physical inactivity, telomere, telomere length, t/s ratio, and telomerase. PRISMA guidelines for systematic reviews were observed.","source_id":"source_1","support_kind":"candidate_source_row"},{"study":"The benefits of regular aerobic exercise training on cerebrovascular function and cognition in older adults","year":2023,"doi":"10.1007/s00421-023-05154-y","url":"https://doi.org/10.1007/s00421-023-05154-y","population":"not extracted","intervention_or_exposure":"not extracted","comparator":"not extracted","endpoint":"not extracted","effect":"not extracted","risk_of_bias":"not appraised in public sidecar","directness":"primary","excerpt":"We compared the differences in cerebrovascular and cognitive function between 13 aerobic exercise trained, older adults and 13 age-, height- and sex-matched sedentary, untrained controls. We determined whether other measures accounted for differences in cerebrovascular and cognitive function between these groups and examined the associations between these functions. Participants undertook anthropometric, mood, cardiovascular, exercise performance, strength, cerebrovascular, and cognitive measurements, and a blood collection. Transcranial Doppler ultrasonography determined cerebrovascular responsiveness (CVR) to hypercapnia and cognitive stimuli. The trained group had a higher CVR to hypercapnia (80.3 ± 7.2 vs 35.1 ± 6.7%, P < 0.001), CVR to cognitive stimuli (30.1 ± 2.9 vs 17.8 ± 1.4%, P = 0.001) and total composite cognitive score (117 ± 2 vs 98 ± 4, P < 0.001) than the controls. These parameters no longer remained statistically different between the groups following adjustments for covariates. There were positive correlations between the total composite cognitive score and CVR to hypercapnia (r = 0.474, P = 0.014) and CVR to cognitive stimuli (r = 0.685, P < 0.001).","source_id":"source_2","support_kind":"candidate_source_row"},{"study":"Home-based high-intensity interval training improves cardiorespiratory fitness: a systematic review and meta-analysis","year":2023,"doi":"10.1186/s13102-023-00777-2","url":"https://doi.org/10.1186/s13102-023-00777-2","population":"not extracted","intervention_or_exposure":"not extracted","comparator":"not extracted","endpoint":"not extracted","effect":"not extracted","risk_of_bias":"not appraised in public sidecar","directness":"review-level","excerpt":"BACKGROUND: High-intensity interval training (HIIT) is an effective methods to improve maximal oxygen uptake. However, there is no definitive conclusion about the specific effectiveness of home-based HIIT. This review investigated the effects of home-based HIIT on cardiorespiratory fitness in a systematic review and meta-analysis. METHODS: Four electronic databases were searched (PubMed, Cochran database, Web of Science, Igaku Chuo Zasshi) for studies through March 25, 2023. Eligibility criteria include randomized controlled trials of home-based HIIT in adult people regardless disease or handicaped. Comparisons were made between non-exercise controls, laboratory-based HIIT, and moderate-intensity continuous training (MICT). The primary outcome was defined as cardiorespiratory fitness and the secondary outcome was defined as patient-reported outcomes. The standardized mean difference (SMD) with 95% confidence intervals (CIs) was calculated for quantitative indices. The random-effect model was used as the pooling method. RESULTS: Two hundred seven studies were identified, and 15 satisfied the inclusion criteria.","source_id":"source_3","support_kind":"candidate_source_row"},{"study":"Post‐exercise hot water immersion enhances haemodynamic and vascular benefits of exercise without further improving cardiorespiratory fitness, glucose, lipids or inflammation","year":2025,"doi":"10.1113/JP288873","url":"https://doi.org/10.1113/JP288873","population":"not extracted","intervention_or_exposure":"not extracted","comparator":"not extracted","endpoint":"not extracted","effect":"not extracted","risk_of_bias":"not appraised in public sidecar","directness":"primary","excerpt":"There is considerable overlap between the mechanisms underlying the health benefits of exercise training and heat therapy. However, it remains unclear whether combining heat therapy with exercise can enhance improvements in cardiovascular and metabolic health. The present study investigated whether post-exercise hot water immersion (EX+HWI) could augment improvements in cardiorespiratory fitness, cardiovascular and metabolic health compared to post-exercise thermoneutral water immersion (EX+TWI). Twenty-four physically inactive middle-aged adults (age: 58 ± 5 years; body mass index: 28 ± 3 kg m - 2 ; 13 females) were randomly allocated to 8 weeks of supervised EX+HWI (n = 12) or EX+TWI (n = 12). Moderate-intensity aerobic exercise (65-75% maximum heart rate) was performed for 30 min followed by 30 min of immersion at 40°C or 34°C, two to four times per week (total 24 sessions). Cardiorespiratory fitness, brachial artery flow-mediated dilatation, aortic pulse wave velocity, blood pressure and circulating lipids, glucose and inflammatory markers were assessed pre- and post-intervention.","source_id":"source_4","support_kind":"candidate_source_row"},{"study":"Effect of exercise training with laser phototherapy on homeostasis balance resistant to hypercoagulability in seniors with obesity: a randomized trial","year":2023,"doi":"10.1038/s41598-023-30550-x","url":"https://doi.org/10.1038/s41598-023-30550-x","population":"not extracted","intervention_or_exposure":"not extracted","comparator":"not extracted","endpoint":"not extracted","effect":"not extracted","risk_of_bias":"not appraised in public sidecar","directness":"primary","excerpt":"The prevalence of obesity has increased the incidence of obesity-related coagulation disorders. The current study assessed the effectiveness of combined aerobic exercise and laser phototherapy on the coagulation profile and body measurements in older adults with obesity compared to aerobic exercise alone, which has not been adequately explored. We included 76 obese people (50% women and 50% men) with a mean age of 67.83 ± 4.84 years and a body mass index of 34.55 ± 2.67 kg/m 2 . The participants were randomly assigned to the experimental group (which received aerobic training with laser phototherapy) and the control group (which received aerobic training alone) for three months. From the baseline to the final analysis, the absolute changes in specific coagulation biomarker levels (fibrinogen, fibrin fragment D, prothrombin time, Kaolin-Cephalin Coagulation Time), and contributing parameters (C-reactive protein and total cholesterol), were assessed. In comparison to the control group, the experimental group showed significant improvements in all evaluated measures (p < 0.001).","source_id":"source_5","support_kind":"candidate_source_row"}]},{"claim_id":"claim_24","claim":"No direction of effect could be extracted, and the source's effect direction field is null, which the analysis treats as evidence against a robust monotonic dose–response signal in this particular study [Salisbury 2023]. The reported p-values can be interpreted as descriptive of a single indirect observational cohort and not as a pooled dose–response estimate [Salisbury 2023].","citation_support":[],"candidate_sources":[{"study":"Physical Activity on Telomere Length as a Biomarker for Aging: A Systematic Review","year":2022,"doi":"10.1186/s40798-022-00503-1","url":"https://doi.org/10.1186/s40798-022-00503-1","population":"not extracted","intervention_or_exposure":"not extracted","comparator":"not extracted","endpoint":"not extracted","effect":"not extracted","risk_of_bias":"not appraised in public sidecar","directness":"review-level","excerpt":"BACKGROUND: Overall life expectancy continues to rise, approaching 80 years of age in several developed countries. However, healthy life expectancy lags far behind, which has, in turn, contributed to increasing costs in healthcare. One way to improve health and attenuate the socio-economic impact of an aging population is to increase overall fitness through physical activity. Telomere attrition or shortening is a well-known molecular marker in aging. As such, several studies have focused on whether exercise influences health and aging through telomere biology. This systematic review examines the recent literature on the effect of physical activity on telomere length (TL) and/or telomerase activity as molecular markers of aging. METHODS: A focused search was performed in the databases PubMed and Web of Science for retrieving relevant articles over the past ten years. The search contained the following keywords: exercise, sport, physical activity, fitness, sedentary, physical inactivity, telomere, telomere length, t/s ratio, and telomerase. PRISMA guidelines for systematic reviews were observed.","source_id":"source_1","support_kind":"candidate_source_row"},{"study":"The benefits of regular aerobic exercise training on cerebrovascular function and cognition in older adults","year":2023,"doi":"10.1007/s00421-023-05154-y","url":"https://doi.org/10.1007/s00421-023-05154-y","population":"not extracted","intervention_or_exposure":"not extracted","comparator":"not extracted","endpoint":"not extracted","effect":"not extracted","risk_of_bias":"not appraised in public sidecar","directness":"primary","excerpt":"We compared the differences in cerebrovascular and cognitive function between 13 aerobic exercise trained, older adults and 13 age-, height- and sex-matched sedentary, untrained controls. We determined whether other measures accounted for differences in cerebrovascular and cognitive function between these groups and examined the associations between these functions. Participants undertook anthropometric, mood, cardiovascular, exercise performance, strength, cerebrovascular, and cognitive measurements, and a blood collection. Transcranial Doppler ultrasonography determined cerebrovascular responsiveness (CVR) to hypercapnia and cognitive stimuli. The trained group had a higher CVR to hypercapnia (80.3 ± 7.2 vs 35.1 ± 6.7%, P < 0.001), CVR to cognitive stimuli (30.1 ± 2.9 vs 17.8 ± 1.4%, P = 0.001) and total composite cognitive score (117 ± 2 vs 98 ± 4, P < 0.001) than the controls. These parameters no longer remained statistically different between the groups following adjustments for covariates. There were positive correlations between the total composite cognitive score and CVR to hypercapnia (r = 0.474, P = 0.014) and CVR to cognitive stimuli (r = 0.685, P < 0.001).","source_id":"source_2","support_kind":"candidate_source_row"},{"study":"Home-based high-intensity interval training improves cardiorespiratory fitness: a systematic review and meta-analysis","year":2023,"doi":"10.1186/s13102-023-00777-2","url":"https://doi.org/10.1186/s13102-023-00777-2","population":"not extracted","intervention_or_exposure":"not extracted","comparator":"not extracted","endpoint":"not extracted","effect":"not extracted","risk_of_bias":"not appraised in public sidecar","directness":"review-level","excerpt":"BACKGROUND: High-intensity interval training (HIIT) is an effective methods to improve maximal oxygen uptake. However, there is no definitive conclusion about the specific effectiveness of home-based HIIT. This review investigated the effects of home-based HIIT on cardiorespiratory fitness in a systematic review and meta-analysis. METHODS: Four electronic databases were searched (PubMed, Cochran database, Web of Science, Igaku Chuo Zasshi) for studies through March 25, 2023. Eligibility criteria include randomized controlled trials of home-based HIIT in adult people regardless disease or handicaped. Comparisons were made between non-exercise controls, laboratory-based HIIT, and moderate-intensity continuous training (MICT). The primary outcome was defined as cardiorespiratory fitness and the secondary outcome was defined as patient-reported outcomes. The standardized mean difference (SMD) with 95% confidence intervals (CIs) was calculated for quantitative indices. The random-effect model was used as the pooling method. RESULTS: Two hundred seven studies were identified, and 15 satisfied the inclusion criteria.","source_id":"source_3","support_kind":"candidate_source_row"},{"study":"Post‐exercise hot water immersion enhances haemodynamic and vascular benefits of exercise without further improving cardiorespiratory fitness, glucose, lipids or inflammation","year":2025,"doi":"10.1113/JP288873","url":"https://doi.org/10.1113/JP288873","population":"not extracted","intervention_or_exposure":"not extracted","comparator":"not extracted","endpoint":"not extracted","effect":"not extracted","risk_of_bias":"not appraised in public sidecar","directness":"primary","excerpt":"There is considerable overlap between the mechanisms underlying the health benefits of exercise training and heat therapy. However, it remains unclear whether combining heat therapy with exercise can enhance improvements in cardiovascular and metabolic health. The present study investigated whether post-exercise hot water immersion (EX+HWI) could augment improvements in cardiorespiratory fitness, cardiovascular and metabolic health compared to post-exercise thermoneutral water immersion (EX+TWI). Twenty-four physically inactive middle-aged adults (age: 58 ± 5 years; body mass index: 28 ± 3 kg m - 2 ; 13 females) were randomly allocated to 8 weeks of supervised EX+HWI (n = 12) or EX+TWI (n = 12). Moderate-intensity aerobic exercise (65-75% maximum heart rate) was performed for 30 min followed by 30 min of immersion at 40°C or 34°C, two to four times per week (total 24 sessions). Cardiorespiratory fitness, brachial artery flow-mediated dilatation, aortic pulse wave velocity, blood pressure and circulating lipids, glucose and inflammatory markers were assessed pre- and post-intervention.","source_id":"source_4","support_kind":"candidate_source_row"},{"study":"Effect of exercise training with laser phototherapy on homeostasis balance resistant to hypercoagulability in seniors with obesity: a randomized trial","year":2023,"doi":"10.1038/s41598-023-30550-x","url":"https://doi.org/10.1038/s41598-023-30550-x","population":"not extracted","intervention_or_exposure":"not extracted","comparator":"not extracted","endpoint":"not extracted","effect":"not extracted","risk_of_bias":"not appraised in public sidecar","directness":"primary","excerpt":"The prevalence of obesity has increased the incidence of obesity-related coagulation disorders. The current study assessed the effectiveness of combined aerobic exercise and laser phototherapy on the coagulation profile and body measurements in older adults with obesity compared to aerobic exercise alone, which has not been adequately explored. We included 76 obese people (50% women and 50% men) with a mean age of 67.83 ± 4.84 years and a body mass index of 34.55 ± 2.67 kg/m 2 . The participants were randomly assigned to the experimental group (which received aerobic training with laser phototherapy) and the control group (which received aerobic training alone) for three months. From the baseline to the final analysis, the absolute changes in specific coagulation biomarker levels (fibrinogen, fibrin fragment D, prothrombin time, Kaolin-Cephalin Coagulation Time), and contributing parameters (C-reactive protein and total cholesterol), were assessed. In comparison to the control group, the experimental group showed significant improvements in all evaluated measures (p < 0.001).","source_id":"source_5","support_kind":"candidate_source_row"}]},{"claim_id":"claim_25","claim":"Mechanistically, the mechanistic substrate underlying this null finding would normally invoke exercise-induced neurotrophin release, yet Salisbury 2023 found no detectable correspondence between CRF change and plasma neurotrophic factors, suggesting either that resting peripheral neurotrophins are insensitive to aerobic dose in Alzheimer's dementia or that the dosing construct itself was too loosely operationalized to detect an effect [Salisbury 2023]. Because the source carries directness = indirect and the design is observational, the study is better framed as hypothesis-generating for a future clinical RCT than as confirmatory mechanistic human data [Salisbury 2023].","citation_support":[],"candidate_sources":[{"study":"Physical Activity on Telomere Length as a Biomarker for Aging: A Systematic Review","year":2022,"doi":"10.1186/s40798-022-00503-1","url":"https://doi.org/10.1186/s40798-022-00503-1","population":"not extracted","intervention_or_exposure":"not extracted","comparator":"not extracted","endpoint":"not extracted","effect":"not extracted","risk_of_bias":"not appraised in public sidecar","directness":"review-level","excerpt":"BACKGROUND: Overall life expectancy continues to rise, approaching 80 years of age in several developed countries. However, healthy life expectancy lags far behind, which has, in turn, contributed to increasing costs in healthcare. One way to improve health and attenuate the socio-economic impact of an aging population is to increase overall fitness through physical activity. Telomere attrition or shortening is a well-known molecular marker in aging. As such, several studies have focused on whether exercise influences health and aging through telomere biology. This systematic review examines the recent literature on the effect of physical activity on telomere length (TL) and/or telomerase activity as molecular markers of aging. METHODS: A focused search was performed in the databases PubMed and Web of Science for retrieving relevant articles over the past ten years. The search contained the following keywords: exercise, sport, physical activity, fitness, sedentary, physical inactivity, telomere, telomere length, t/s ratio, and telomerase. PRISMA guidelines for systematic reviews were observed.","source_id":"source_1","support_kind":"candidate_source_row"},{"study":"The benefits of regular aerobic exercise training on cerebrovascular function and cognition in older adults","year":2023,"doi":"10.1007/s00421-023-05154-y","url":"https://doi.org/10.1007/s00421-023-05154-y","population":"not extracted","intervention_or_exposure":"not extracted","comparator":"not extracted","endpoint":"not extracted","effect":"not extracted","risk_of_bias":"not appraised in public sidecar","directness":"primary","excerpt":"We compared the differences in cerebrovascular and cognitive function between 13 aerobic exercise trained, older adults and 13 age-, height- and sex-matched sedentary, untrained controls. We determined whether other measures accounted for differences in cerebrovascular and cognitive function between these groups and examined the associations between these functions. Participants undertook anthropometric, mood, cardiovascular, exercise performance, strength, cerebrovascular, and cognitive measurements, and a blood collection. Transcranial Doppler ultrasonography determined cerebrovascular responsiveness (CVR) to hypercapnia and cognitive stimuli. The trained group had a higher CVR to hypercapnia (80.3 ± 7.2 vs 35.1 ± 6.7%, P < 0.001), CVR to cognitive stimuli (30.1 ± 2.9 vs 17.8 ± 1.4%, P = 0.001) and total composite cognitive score (117 ± 2 vs 98 ± 4, P < 0.001) than the controls. These parameters no longer remained statistically different between the groups following adjustments for covariates. There were positive correlations between the total composite cognitive score and CVR to hypercapnia (r = 0.474, P = 0.014) and CVR to cognitive stimuli (r = 0.685, P < 0.001).","source_id":"source_2","support_kind":"candidate_source_row"},{"study":"Home-based high-intensity interval training improves cardiorespiratory fitness: a systematic review and meta-analysis","year":2023,"doi":"10.1186/s13102-023-00777-2","url":"https://doi.org/10.1186/s13102-023-00777-2","population":"not extracted","intervention_or_exposure":"not extracted","comparator":"not extracted","endpoint":"not extracted","effect":"not extracted","risk_of_bias":"not appraised in public sidecar","directness":"review-level","excerpt":"BACKGROUND: High-intensity interval training (HIIT) is an effective methods to improve maximal oxygen uptake. However, there is no definitive conclusion about the specific effectiveness of home-based HIIT. This review investigated the effects of home-based HIIT on cardiorespiratory fitness in a systematic review and meta-analysis. METHODS: Four electronic databases were searched (PubMed, Cochran database, Web of Science, Igaku Chuo Zasshi) for studies through March 25, 2023. Eligibility criteria include randomized controlled trials of home-based HIIT in adult people regardless disease or handicaped. Comparisons were made between non-exercise controls, laboratory-based HIIT, and moderate-intensity continuous training (MICT). The primary outcome was defined as cardiorespiratory fitness and the secondary outcome was defined as patient-reported outcomes. The standardized mean difference (SMD) with 95% confidence intervals (CIs) was calculated for quantitative indices. The random-effect model was used as the pooling method. RESULTS: Two hundred seven studies were identified, and 15 satisfied the inclusion criteria.","source_id":"source_3","support_kind":"candidate_source_row"},{"study":"Post‐exercise hot water immersion enhances haemodynamic and vascular benefits of exercise without further improving cardiorespiratory fitness, glucose, lipids or inflammation","year":2025,"doi":"10.1113/JP288873","url":"https://doi.org/10.1113/JP288873","population":"not extracted","intervention_or_exposure":"not extracted","comparator":"not extracted","endpoint":"not extracted","effect":"not extracted","risk_of_bias":"not appraised in public sidecar","directness":"primary","excerpt":"There is considerable overlap between the mechanisms underlying the health benefits of exercise training and heat therapy. However, it remains unclear whether combining heat therapy with exercise can enhance improvements in cardiovascular and metabolic health. The present study investigated whether post-exercise hot water immersion (EX+HWI) could augment improvements in cardiorespiratory fitness, cardiovascular and metabolic health compared to post-exercise thermoneutral water immersion (EX+TWI). Twenty-four physically inactive middle-aged adults (age: 58 ± 5 years; body mass index: 28 ± 3 kg m - 2 ; 13 females) were randomly allocated to 8 weeks of supervised EX+HWI (n = 12) or EX+TWI (n = 12). Moderate-intensity aerobic exercise (65-75% maximum heart rate) was performed for 30 min followed by 30 min of immersion at 40°C or 34°C, two to four times per week (total 24 sessions). Cardiorespiratory fitness, brachial artery flow-mediated dilatation, aortic pulse wave velocity, blood pressure and circulating lipids, glucose and inflammatory markers were assessed pre- and post-intervention.","source_id":"source_4","support_kind":"candidate_source_row"},{"study":"Effect of exercise training with laser phototherapy on homeostasis balance resistant to hypercoagulability in seniors with obesity: a randomized trial","year":2023,"doi":"10.1038/s41598-023-30550-x","url":"https://doi.org/10.1038/s41598-023-30550-x","population":"not extracted","intervention_or_exposure":"not extracted","comparator":"not extracted","endpoint":"not extracted","effect":"not extracted","risk_of_bias":"not appraised in public sidecar","directness":"primary","excerpt":"The prevalence of obesity has increased the incidence of obesity-related coagulation disorders. The current study assessed the effectiveness of combined aerobic exercise and laser phototherapy on the coagulation profile and body measurements in older adults with obesity compared to aerobic exercise alone, which has not been adequately explored. We included 76 obese people (50% women and 50% men) with a mean age of 67.83 ± 4.84 years and a body mass index of 34.55 ± 2.67 kg/m 2 . The participants were randomly assigned to the experimental group (which received aerobic training with laser phototherapy) and the control group (which received aerobic training alone) for three months. From the baseline to the final analysis, the absolute changes in specific coagulation biomarker levels (fibrinogen, fibrin fragment D, prothrombin time, Kaolin-Cephalin Coagulation Time), and contributing parameters (C-reactive protein and total cholesterol), were assessed. In comparison to the control group, the experimental group showed significant improvements in all evaluated measures (p < 0.001).","source_id":"source_5","support_kind":"candidate_source_row"}]},{"claim_id":"claim_26","claim":"Within the corpus there is no second dosing/pharmacokinetics study to triangulate Salisbury 2023, so no within-corpus tension can be named in this outcome class, and the brief's broader cross-class signal of null findings dominating contextual-other and cardiometabolic endpoints is consistent with — but not directly tested against — this single indirect cohort [Salisbury 2023]. Together these clinical RCT and cohort designs establish the trial summary for the muscle-function class: aerobic interventions of 8 weeks to several months, adult and older-adult populations, and physical-fitness or cardiorespiratory endpoints.","citation_support":[],"candidate_sources":[{"study":"Physical Activity on Telomere Length as a Biomarker for Aging: A Systematic Review","year":2022,"doi":"10.1186/s40798-022-00503-1","url":"https://doi.org/10.1186/s40798-022-00503-1","population":"not extracted","intervention_or_exposure":"not extracted","comparator":"not extracted","endpoint":"not extracted","effect":"not extracted","risk_of_bias":"not appraised in public sidecar","directness":"review-level","excerpt":"BACKGROUND: Overall life expectancy continues to rise, approaching 80 years of age in several developed countries. However, healthy life expectancy lags far behind, which has, in turn, contributed to increasing costs in healthcare. One way to improve health and attenuate the socio-economic impact of an aging population is to increase overall fitness through physical activity. Telomere attrition or shortening is a well-known molecular marker in aging. As such, several studies have focused on whether exercise influences health and aging through telomere biology. This systematic review examines the recent literature on the effect of physical activity on telomere length (TL) and/or telomerase activity as molecular markers of aging. METHODS: A focused search was performed in the databases PubMed and Web of Science for retrieving relevant articles over the past ten years. The search contained the following keywords: exercise, sport, physical activity, fitness, sedentary, physical inactivity, telomere, telomere length, t/s ratio, and telomerase. PRISMA guidelines for systematic reviews were observed.","source_id":"source_1","support_kind":"candidate_source_row"},{"study":"The benefits of regular aerobic exercise training on cerebrovascular function and cognition in older adults","year":2023,"doi":"10.1007/s00421-023-05154-y","url":"https://doi.org/10.1007/s00421-023-05154-y","population":"not extracted","intervention_or_exposure":"not extracted","comparator":"not extracted","endpoint":"not extracted","effect":"not extracted","risk_of_bias":"not appraised in public sidecar","directness":"primary","excerpt":"We compared the differences in cerebrovascular and cognitive function between 13 aerobic exercise trained, older adults and 13 age-, height- and sex-matched sedentary, untrained controls. We determined whether other measures accounted for differences in cerebrovascular and cognitive function between these groups and examined the associations between these functions. Participants undertook anthropometric, mood, cardiovascular, exercise performance, strength, cerebrovascular, and cognitive measurements, and a blood collection. Transcranial Doppler ultrasonography determined cerebrovascular responsiveness (CVR) to hypercapnia and cognitive stimuli. The trained group had a higher CVR to hypercapnia (80.3 ± 7.2 vs 35.1 ± 6.7%, P < 0.001), CVR to cognitive stimuli (30.1 ± 2.9 vs 17.8 ± 1.4%, P = 0.001) and total composite cognitive score (117 ± 2 vs 98 ± 4, P < 0.001) than the controls. These parameters no longer remained statistically different between the groups following adjustments for covariates. There were positive correlations between the total composite cognitive score and CVR to hypercapnia (r = 0.474, P = 0.014) and CVR to cognitive stimuli (r = 0.685, P < 0.001).","source_id":"source_2","support_kind":"candidate_source_row"},{"study":"Home-based high-intensity interval training improves cardiorespiratory fitness: a systematic review and meta-analysis","year":2023,"doi":"10.1186/s13102-023-00777-2","url":"https://doi.org/10.1186/s13102-023-00777-2","population":"not extracted","intervention_or_exposure":"not extracted","comparator":"not extracted","endpoint":"not extracted","effect":"not extracted","risk_of_bias":"not appraised in public sidecar","directness":"review-level","excerpt":"BACKGROUND: High-intensity interval training (HIIT) is an effective methods to improve maximal oxygen uptake. However, there is no definitive conclusion about the specific effectiveness of home-based HIIT. This review investigated the effects of home-based HIIT on cardiorespiratory fitness in a systematic review and meta-analysis. METHODS: Four electronic databases were searched (PubMed, Cochran database, Web of Science, Igaku Chuo Zasshi) for studies through March 25, 2023. Eligibility criteria include randomized controlled trials of home-based HIIT in adult people regardless disease or handicaped. Comparisons were made between non-exercise controls, laboratory-based HIIT, and moderate-intensity continuous training (MICT). The primary outcome was defined as cardiorespiratory fitness and the secondary outcome was defined as patient-reported outcomes. The standardized mean difference (SMD) with 95% confidence intervals (CIs) was calculated for quantitative indices. The random-effect model was used as the pooling method. RESULTS: Two hundred seven studies were identified, and 15 satisfied the inclusion criteria.","source_id":"source_3","support_kind":"candidate_source_row"},{"study":"Post‐exercise hot water immersion enhances haemodynamic and vascular benefits of exercise without further improving cardiorespiratory fitness, glucose, lipids or inflammation","year":2025,"doi":"10.1113/JP288873","url":"https://doi.org/10.1113/JP288873","population":"not extracted","intervention_or_exposure":"not extracted","comparator":"not extracted","endpoint":"not extracted","effect":"not extracted","risk_of_bias":"not appraised in public sidecar","directness":"primary","excerpt":"There is considerable overlap between the mechanisms underlying the health benefits of exercise training and heat therapy. However, it remains unclear whether combining heat therapy with exercise can enhance improvements in cardiovascular and metabolic health. The present study investigated whether post-exercise hot water immersion (EX+HWI) could augment improvements in cardiorespiratory fitness, cardiovascular and metabolic health compared to post-exercise thermoneutral water immersion (EX+TWI). Twenty-four physically inactive middle-aged adults (age: 58 ± 5 years; body mass index: 28 ± 3 kg m - 2 ; 13 females) were randomly allocated to 8 weeks of supervised EX+HWI (n = 12) or EX+TWI (n = 12). Moderate-intensity aerobic exercise (65-75% maximum heart rate) was performed for 30 min followed by 30 min of immersion at 40°C or 34°C, two to four times per week (total 24 sessions). Cardiorespiratory fitness, brachial artery flow-mediated dilatation, aortic pulse wave velocity, blood pressure and circulating lipids, glucose and inflammatory markers were assessed pre- and post-intervention.","source_id":"source_4","support_kind":"candidate_source_row"},{"study":"Effect of exercise training with laser phototherapy on homeostasis balance resistant to hypercoagulability in seniors with obesity: a randomized trial","year":2023,"doi":"10.1038/s41598-023-30550-x","url":"https://doi.org/10.1038/s41598-023-30550-x","population":"not extracted","intervention_or_exposure":"not extracted","comparator":"not extracted","endpoint":"not extracted","effect":"not extracted","risk_of_bias":"not appraised in public sidecar","directness":"primary","excerpt":"The prevalence of obesity has increased the incidence of obesity-related coagulation disorders. The current study assessed the effectiveness of combined aerobic exercise and laser phototherapy on the coagulation profile and body measurements in older adults with obesity compared to aerobic exercise alone, which has not been adequately explored. We included 76 obese people (50% women and 50% men) with a mean age of 67.83 ± 4.84 years and a body mass index of 34.55 ± 2.67 kg/m 2 . The participants were randomly assigned to the experimental group (which received aerobic training with laser phototherapy) and the control group (which received aerobic training alone) for three months. From the baseline to the final analysis, the absolute changes in specific coagulation biomarker levels (fibrinogen, fibrin fragment D, prothrombin time, Kaolin-Cephalin Coagulation Time), and contributing parameters (C-reactive protein and total cholesterol), were assessed. In comparison to the control group, the experimental group showed significant improvements in all evaluated measures (p < 0.001).","source_id":"source_5","support_kind":"candidate_source_row"}]},{"claim_id":"claim_27","claim":"Egan 2013 is the single curated human-physiology study contributing to the skeletal, fracture, and bone outcome class, and it is positioned as indirect rather than direct evidence because its primary endpoint is molecular kinetics in skeletal muscle rather than a clinical fracture or bone-density outcome. The study is observational in design with a short, fixed exposure window and a very small cohort, which limits inferential strength for skeletal endpoints. No fracture incidence, bone mineral density, or surrogate imaging endpoint is reported; the only directness-relevant signal is that adaptation was measured in skeletal muscle tissue, not in bone. Readers should therefore treat any inference about bone outcomes from this source as exploratory rather than confirmatory.","citation_support":[],"candidate_sources":[{"study":"Physical Activity on Telomere Length as a Biomarker for Aging: A Systematic Review","year":2022,"doi":"10.1186/s40798-022-00503-1","url":"https://doi.org/10.1186/s40798-022-00503-1","population":"not extracted","intervention_or_exposure":"not extracted","comparator":"not extracted","endpoint":"not extracted","effect":"not extracted","risk_of_bias":"not appraised in public sidecar","directness":"review-level","excerpt":"BACKGROUND: Overall life expectancy continues to rise, approaching 80 years of age in several developed countries. However, healthy life expectancy lags far behind, which has, in turn, contributed to increasing costs in healthcare. One way to improve health and attenuate the socio-economic impact of an aging population is to increase overall fitness through physical activity. Telomere attrition or shortening is a well-known molecular marker in aging. As such, several studies have focused on whether exercise influences health and aging through telomere biology. This systematic review examines the recent literature on the effect of physical activity on telomere length (TL) and/or telomerase activity as molecular markers of aging. METHODS: A focused search was performed in the databases PubMed and Web of Science for retrieving relevant articles over the past ten years. The search contained the following keywords: exercise, sport, physical activity, fitness, sedentary, physical inactivity, telomere, telomere length, t/s ratio, and telomerase. PRISMA guidelines for systematic reviews were observed.","source_id":"source_1","support_kind":"candidate_source_row"},{"study":"The benefits of regular aerobic exercise training on cerebrovascular function and cognition in older adults","year":2023,"doi":"10.1007/s00421-023-05154-y","url":"https://doi.org/10.1007/s00421-023-05154-y","population":"not extracted","intervention_or_exposure":"not extracted","comparator":"not extracted","endpoint":"not extracted","effect":"not extracted","risk_of_bias":"not appraised in public sidecar","directness":"primary","excerpt":"We compared the differences in cerebrovascular and cognitive function between 13 aerobic exercise trained, older adults and 13 age-, height- and sex-matched sedentary, untrained controls. We determined whether other measures accounted for differences in cerebrovascular and cognitive function between these groups and examined the associations between these functions. Participants undertook anthropometric, mood, cardiovascular, exercise performance, strength, cerebrovascular, and cognitive measurements, and a blood collection. Transcranial Doppler ultrasonography determined cerebrovascular responsiveness (CVR) to hypercapnia and cognitive stimuli. The trained group had a higher CVR to hypercapnia (80.3 ± 7.2 vs 35.1 ± 6.7%, P < 0.001), CVR to cognitive stimuli (30.1 ± 2.9 vs 17.8 ± 1.4%, P = 0.001) and total composite cognitive score (117 ± 2 vs 98 ± 4, P < 0.001) than the controls. These parameters no longer remained statistically different between the groups following adjustments for covariates. There were positive correlations between the total composite cognitive score and CVR to hypercapnia (r = 0.474, P = 0.014) and CVR to cognitive stimuli (r = 0.685, P < 0.001).","source_id":"source_2","support_kind":"candidate_source_row"},{"study":"Home-based high-intensity interval training improves cardiorespiratory fitness: a systematic review and meta-analysis","year":2023,"doi":"10.1186/s13102-023-00777-2","url":"https://doi.org/10.1186/s13102-023-00777-2","population":"not extracted","intervention_or_exposure":"not extracted","comparator":"not extracted","endpoint":"not extracted","effect":"not extracted","risk_of_bias":"not appraised in public sidecar","directness":"review-level","excerpt":"BACKGROUND: High-intensity interval training (HIIT) is an effective methods to improve maximal oxygen uptake. However, there is no definitive conclusion about the specific effectiveness of home-based HIIT. This review investigated the effects of home-based HIIT on cardiorespiratory fitness in a systematic review and meta-analysis. METHODS: Four electronic databases were searched (PubMed, Cochran database, Web of Science, Igaku Chuo Zasshi) for studies through March 25, 2023. Eligibility criteria include randomized controlled trials of home-based HIIT in adult people regardless disease or handicaped. Comparisons were made between non-exercise controls, laboratory-based HIIT, and moderate-intensity continuous training (MICT). The primary outcome was defined as cardiorespiratory fitness and the secondary outcome was defined as patient-reported outcomes. The standardized mean difference (SMD) with 95% confidence intervals (CIs) was calculated for quantitative indices. The random-effect model was used as the pooling method. RESULTS: Two hundred seven studies were identified, and 15 satisfied the inclusion criteria.","source_id":"source_3","support_kind":"candidate_source_row"},{"study":"Post‐exercise hot water immersion enhances haemodynamic and vascular benefits of exercise without further improving cardiorespiratory fitness, glucose, lipids or inflammation","year":2025,"doi":"10.1113/JP288873","url":"https://doi.org/10.1113/JP288873","population":"not extracted","intervention_or_exposure":"not extracted","comparator":"not extracted","endpoint":"not extracted","effect":"not extracted","risk_of_bias":"not appraised in public sidecar","directness":"primary","excerpt":"There is considerable overlap between the mechanisms underlying the health benefits of exercise training and heat therapy. However, it remains unclear whether combining heat therapy with exercise can enhance improvements in cardiovascular and metabolic health. The present study investigated whether post-exercise hot water immersion (EX+HWI) could augment improvements in cardiorespiratory fitness, cardiovascular and metabolic health compared to post-exercise thermoneutral water immersion (EX+TWI). Twenty-four physically inactive middle-aged adults (age: 58 ± 5 years; body mass index: 28 ± 3 kg m - 2 ; 13 females) were randomly allocated to 8 weeks of supervised EX+HWI (n = 12) or EX+TWI (n = 12). Moderate-intensity aerobic exercise (65-75% maximum heart rate) was performed for 30 min followed by 30 min of immersion at 40°C or 34°C, two to four times per week (total 24 sessions). Cardiorespiratory fitness, brachial artery flow-mediated dilatation, aortic pulse wave velocity, blood pressure and circulating lipids, glucose and inflammatory markers were assessed pre- and post-intervention.","source_id":"source_4","support_kind":"candidate_source_row"},{"study":"Effect of exercise training with laser phototherapy on homeostasis balance resistant to hypercoagulability in seniors with obesity: a randomized trial","year":2023,"doi":"10.1038/s41598-023-30550-x","url":"https://doi.org/10.1038/s41598-023-30550-x","population":"not extracted","intervention_or_exposure":"not extracted","comparator":"not extracted","endpoint":"not extracted","effect":"not extracted","risk_of_bias":"not appraised in public sidecar","directness":"primary","excerpt":"The prevalence of obesity has increased the incidence of obesity-related coagulation disorders. The current study assessed the effectiveness of combined aerobic exercise and laser phototherapy on the coagulation profile and body measurements in older adults with obesity compared to aerobic exercise alone, which has not been adequately explored. We included 76 obese people (50% women and 50% men) with a mean age of 67.83 ± 4.84 years and a body mass index of 34.55 ± 2.67 kg/m 2 . The participants were randomly assigned to the experimental group (which received aerobic training with laser phototherapy) and the control group (which received aerobic training alone) for three months. From the baseline to the final analysis, the absolute changes in specific coagulation biomarker levels (fibrinogen, fibrin fragment D, prothrombin time, Kaolin-Cephalin Coagulation Time), and contributing parameters (C-reactive protein and total cholesterol), were assessed. In comparison to the control group, the experimental group showed significant improvements in all evaluated measures (p < 0.001).","source_id":"source_5","support_kind":"candidate_source_row"}]},{"claim_id":"claim_28","claim":"Because these statistics index molecular adaptation in muscle, the relevant numerator is the number of gene/protein endpoints reaching P < 0.05 within the curated set, not a clinical fracture or bone-density effect size; the source does not provide a hazard ratio, odds ratio, or relative risk for any bone endpoint. No 95% confidence intervals are reported in the curated excerpt, and the source does not state a primary analytic endpoint. Effect direction is recorded as null for the skeletal fracture bone class because the molecular findings, while positive in muscle, do not translate within the source to a directional bone outcome.","citation_support":[],"candidate_sources":[{"study":"Physical Activity on Telomere Length as a Biomarker for Aging: A Systematic Review","year":2022,"doi":"10.1186/s40798-022-00503-1","url":"https://doi.org/10.1186/s40798-022-00503-1","population":"not extracted","intervention_or_exposure":"not extracted","comparator":"not extracted","endpoint":"not extracted","effect":"not extracted","risk_of_bias":"not appraised in public sidecar","directness":"review-level","excerpt":"BACKGROUND: Overall life expectancy continues to rise, approaching 80 years of age in several developed countries. However, healthy life expectancy lags far behind, which has, in turn, contributed to increasing costs in healthcare. One way to improve health and attenuate the socio-economic impact of an aging population is to increase overall fitness through physical activity. Telomere attrition or shortening is a well-known molecular marker in aging. As such, several studies have focused on whether exercise influences health and aging through telomere biology. This systematic review examines the recent literature on the effect of physical activity on telomere length (TL) and/or telomerase activity as molecular markers of aging. METHODS: A focused search was performed in the databases PubMed and Web of Science for retrieving relevant articles over the past ten years. The search contained the following keywords: exercise, sport, physical activity, fitness, sedentary, physical inactivity, telomere, telomere length, t/s ratio, and telomerase. PRISMA guidelines for systematic reviews were observed.","source_id":"source_1","support_kind":"candidate_source_row"},{"study":"The benefits of regular aerobic exercise training on cerebrovascular function and cognition in older adults","year":2023,"doi":"10.1007/s00421-023-05154-y","url":"https://doi.org/10.1007/s00421-023-05154-y","population":"not extracted","intervention_or_exposure":"not extracted","comparator":"not extracted","endpoint":"not extracted","effect":"not extracted","risk_of_bias":"not appraised in public sidecar","directness":"primary","excerpt":"We compared the differences in cerebrovascular and cognitive function between 13 aerobic exercise trained, older adults and 13 age-, height- and sex-matched sedentary, untrained controls. We determined whether other measures accounted for differences in cerebrovascular and cognitive function between these groups and examined the associations between these functions. Participants undertook anthropometric, mood, cardiovascular, exercise performance, strength, cerebrovascular, and cognitive measurements, and a blood collection. Transcranial Doppler ultrasonography determined cerebrovascular responsiveness (CVR) to hypercapnia and cognitive stimuli. The trained group had a higher CVR to hypercapnia (80.3 ± 7.2 vs 35.1 ± 6.7%, P < 0.001), CVR to cognitive stimuli (30.1 ± 2.9 vs 17.8 ± 1.4%, P = 0.001) and total composite cognitive score (117 ± 2 vs 98 ± 4, P < 0.001) than the controls. These parameters no longer remained statistically different between the groups following adjustments for covariates. There were positive correlations between the total composite cognitive score and CVR to hypercapnia (r = 0.474, P = 0.014) and CVR to cognitive stimuli (r = 0.685, P < 0.001).","source_id":"source_2","support_kind":"candidate_source_row"},{"study":"Home-based high-intensity interval training improves cardiorespiratory fitness: a systematic review and meta-analysis","year":2023,"doi":"10.1186/s13102-023-00777-2","url":"https://doi.org/10.1186/s13102-023-00777-2","population":"not extracted","intervention_or_exposure":"not extracted","comparator":"not extracted","endpoint":"not extracted","effect":"not extracted","risk_of_bias":"not appraised in public sidecar","directness":"review-level","excerpt":"BACKGROUND: High-intensity interval training (HIIT) is an effective methods to improve maximal oxygen uptake. However, there is no definitive conclusion about the specific effectiveness of home-based HIIT. This review investigated the effects of home-based HIIT on cardiorespiratory fitness in a systematic review and meta-analysis. METHODS: Four electronic databases were searched (PubMed, Cochran database, Web of Science, Igaku Chuo Zasshi) for studies through March 25, 2023. Eligibility criteria include randomized controlled trials of home-based HIIT in adult people regardless disease or handicaped. Comparisons were made between non-exercise controls, laboratory-based HIIT, and moderate-intensity continuous training (MICT). The primary outcome was defined as cardiorespiratory fitness and the secondary outcome was defined as patient-reported outcomes. The standardized mean difference (SMD) with 95% confidence intervals (CIs) was calculated for quantitative indices. The random-effect model was used as the pooling method. RESULTS: Two hundred seven studies were identified, and 15 satisfied the inclusion criteria.","source_id":"source_3","support_kind":"candidate_source_row"},{"study":"Post‐exercise hot water immersion enhances haemodynamic and vascular benefits of exercise without further improving cardiorespiratory fitness, glucose, lipids or inflammation","year":2025,"doi":"10.1113/JP288873","url":"https://doi.org/10.1113/JP288873","population":"not extracted","intervention_or_exposure":"not extracted","comparator":"not extracted","endpoint":"not extracted","effect":"not extracted","risk_of_bias":"not appraised in public sidecar","directness":"primary","excerpt":"There is considerable overlap between the mechanisms underlying the health benefits of exercise training and heat therapy. However, it remains unclear whether combining heat therapy with exercise can enhance improvements in cardiovascular and metabolic health. The present study investigated whether post-exercise hot water immersion (EX+HWI) could augment improvements in cardiorespiratory fitness, cardiovascular and metabolic health compared to post-exercise thermoneutral water immersion (EX+TWI). Twenty-four physically inactive middle-aged adults (age: 58 ± 5 years; body mass index: 28 ± 3 kg m - 2 ; 13 females) were randomly allocated to 8 weeks of supervised EX+HWI (n = 12) or EX+TWI (n = 12). Moderate-intensity aerobic exercise (65-75% maximum heart rate) was performed for 30 min followed by 30 min of immersion at 40°C or 34°C, two to four times per week (total 24 sessions). Cardiorespiratory fitness, brachial artery flow-mediated dilatation, aortic pulse wave velocity, blood pressure and circulating lipids, glucose and inflammatory markers were assessed pre- and post-intervention.","source_id":"source_4","support_kind":"candidate_source_row"},{"study":"Effect of exercise training with laser phototherapy on homeostasis balance resistant to hypercoagulability in seniors with obesity: a randomized trial","year":2023,"doi":"10.1038/s41598-023-30550-x","url":"https://doi.org/10.1038/s41598-023-30550-x","population":"not extracted","intervention_or_exposure":"not extracted","comparator":"not extracted","endpoint":"not extracted","effect":"not extracted","risk_of_bias":"not appraised in public sidecar","directness":"primary","excerpt":"The prevalence of obesity has increased the incidence of obesity-related coagulation disorders. The current study assessed the effectiveness of combined aerobic exercise and laser phototherapy on the coagulation profile and body measurements in older adults with obesity compared to aerobic exercise alone, which has not been adequately explored. We included 76 obese people (50% women and 50% men) with a mean age of 67.83 ± 4.84 years and a body mass index of 34.55 ± 2.67 kg/m 2 . The participants were randomly assigned to the experimental group (which received aerobic training with laser phototherapy) and the control group (which received aerobic training alone) for three months. From the baseline to the final analysis, the absolute changes in specific coagulation biomarker levels (fibrinogen, fibrin fragment D, prothrombin time, Kaolin-Cephalin Coagulation Time), and contributing parameters (C-reactive protein and total cholesterol), were assessed. In comparison to the control group, the experimental group showed significant improvements in all evaluated measures (p < 0.001).","source_id":"source_5","support_kind":"candidate_source_row"}]},{"claim_id":"claim_29","claim":"Mechanistically, the Egan 2013 substrate is a short-term aerobic-exercise challenge in healthy sedentary adults, with molecular readouts in skeletal muscle; it is therefore best characterized as a mechanistic human study rather than a clinical RCT, and its applicability to skeletal fracture bone endpoints requires an inferential bridge from muscle adaptation to bone remodeling. That bridge is not made within the curated source, and the source itself does not assert any bone-relevant mechanism. In a broader anti-aging framework, an aerobic stimulus that drives repeatable transcript and protein responses in muscle (P < 0.05 across multiple gene/protein endpoints) is biologically plausible as a modifier of mechanotransductive loading on bone, but plausibility is not evidence and no bone endpoint is measured. The within-corpus record for this outcome class is therefore mechanistic-muscle data tagged to a skeletal outcome label, with directness acknowledged as indirect.","citation_support":[],"candidate_sources":[{"study":"Physical Activity on Telomere Length as a Biomarker for Aging: A Systematic Review","year":2022,"doi":"10.1186/s40798-022-00503-1","url":"https://doi.org/10.1186/s40798-022-00503-1","population":"not extracted","intervention_or_exposure":"not extracted","comparator":"not extracted","endpoint":"not extracted","effect":"not extracted","risk_of_bias":"not appraised in public sidecar","directness":"review-level","excerpt":"BACKGROUND: Overall life expectancy continues to rise, approaching 80 years of age in several developed countries. However, healthy life expectancy lags far behind, which has, in turn, contributed to increasing costs in healthcare. One way to improve health and attenuate the socio-economic impact of an aging population is to increase overall fitness through physical activity. Telomere attrition or shortening is a well-known molecular marker in aging. As such, several studies have focused on whether exercise influences health and aging through telomere biology. This systematic review examines the recent literature on the effect of physical activity on telomere length (TL) and/or telomerase activity as molecular markers of aging. METHODS: A focused search was performed in the databases PubMed and Web of Science for retrieving relevant articles over the past ten years. The search contained the following keywords: exercise, sport, physical activity, fitness, sedentary, physical inactivity, telomere, telomere length, t/s ratio, and telomerase. PRISMA guidelines for systematic reviews were observed.","source_id":"source_1","support_kind":"candidate_source_row"},{"study":"The benefits of regular aerobic exercise training on cerebrovascular function and cognition in older adults","year":2023,"doi":"10.1007/s00421-023-05154-y","url":"https://doi.org/10.1007/s00421-023-05154-y","population":"not extracted","intervention_or_exposure":"not extracted","comparator":"not extracted","endpoint":"not extracted","effect":"not extracted","risk_of_bias":"not appraised in public sidecar","directness":"primary","excerpt":"We compared the differences in cerebrovascular and cognitive function between 13 aerobic exercise trained, older adults and 13 age-, height- and sex-matched sedentary, untrained controls. We determined whether other measures accounted for differences in cerebrovascular and cognitive function between these groups and examined the associations between these functions. Participants undertook anthropometric, mood, cardiovascular, exercise performance, strength, cerebrovascular, and cognitive measurements, and a blood collection. Transcranial Doppler ultrasonography determined cerebrovascular responsiveness (CVR) to hypercapnia and cognitive stimuli. The trained group had a higher CVR to hypercapnia (80.3 ± 7.2 vs 35.1 ± 6.7%, P < 0.001), CVR to cognitive stimuli (30.1 ± 2.9 vs 17.8 ± 1.4%, P = 0.001) and total composite cognitive score (117 ± 2 vs 98 ± 4, P < 0.001) than the controls. These parameters no longer remained statistically different between the groups following adjustments for covariates. There were positive correlations between the total composite cognitive score and CVR to hypercapnia (r = 0.474, P = 0.014) and CVR to cognitive stimuli (r = 0.685, P < 0.001).","source_id":"source_2","support_kind":"candidate_source_row"},{"study":"Home-based high-intensity interval training improves cardiorespiratory fitness: a systematic review and meta-analysis","year":2023,"doi":"10.1186/s13102-023-00777-2","url":"https://doi.org/10.1186/s13102-023-00777-2","population":"not extracted","intervention_or_exposure":"not extracted","comparator":"not extracted","endpoint":"not extracted","effect":"not extracted","risk_of_bias":"not appraised in public sidecar","directness":"review-level","excerpt":"BACKGROUND: High-intensity interval training (HIIT) is an effective methods to improve maximal oxygen uptake. However, there is no definitive conclusion about the specific effectiveness of home-based HIIT. This review investigated the effects of home-based HIIT on cardiorespiratory fitness in a systematic review and meta-analysis. METHODS: Four electronic databases were searched (PubMed, Cochran database, Web of Science, Igaku Chuo Zasshi) for studies through March 25, 2023. Eligibility criteria include randomized controlled trials of home-based HIIT in adult people regardless disease or handicaped. Comparisons were made between non-exercise controls, laboratory-based HIIT, and moderate-intensity continuous training (MICT). The primary outcome was defined as cardiorespiratory fitness and the secondary outcome was defined as patient-reported outcomes. The standardized mean difference (SMD) with 95% confidence intervals (CIs) was calculated for quantitative indices. The random-effect model was used as the pooling method. RESULTS: Two hundred seven studies were identified, and 15 satisfied the inclusion criteria.","source_id":"source_3","support_kind":"candidate_source_row"},{"study":"Post‐exercise hot water immersion enhances haemodynamic and vascular benefits of exercise without further improving cardiorespiratory fitness, glucose, lipids or inflammation","year":2025,"doi":"10.1113/JP288873","url":"https://doi.org/10.1113/JP288873","population":"not extracted","intervention_or_exposure":"not extracted","comparator":"not extracted","endpoint":"not extracted","effect":"not extracted","risk_of_bias":"not appraised in public sidecar","directness":"primary","excerpt":"There is considerable overlap between the mechanisms underlying the health benefits of exercise training and heat therapy. However, it remains unclear whether combining heat therapy with exercise can enhance improvements in cardiovascular and metabolic health. The present study investigated whether post-exercise hot water immersion (EX+HWI) could augment improvements in cardiorespiratory fitness, cardiovascular and metabolic health compared to post-exercise thermoneutral water immersion (EX+TWI). Twenty-four physically inactive middle-aged adults (age: 58 ± 5 years; body mass index: 28 ± 3 kg m - 2 ; 13 females) were randomly allocated to 8 weeks of supervised EX+HWI (n = 12) or EX+TWI (n = 12). Moderate-intensity aerobic exercise (65-75% maximum heart rate) was performed for 30 min followed by 30 min of immersion at 40°C or 34°C, two to four times per week (total 24 sessions). Cardiorespiratory fitness, brachial artery flow-mediated dilatation, aortic pulse wave velocity, blood pressure and circulating lipids, glucose and inflammatory markers were assessed pre- and post-intervention.","source_id":"source_4","support_kind":"candidate_source_row"},{"study":"Effect of exercise training with laser phototherapy on homeostasis balance resistant to hypercoagulability in seniors with obesity: a randomized trial","year":2023,"doi":"10.1038/s41598-023-30550-x","url":"https://doi.org/10.1038/s41598-023-30550-x","population":"not extracted","intervention_or_exposure":"not extracted","comparator":"not extracted","endpoint":"not extracted","effect":"not extracted","risk_of_bias":"not appraised in public sidecar","directness":"primary","excerpt":"The prevalence of obesity has increased the incidence of obesity-related coagulation disorders. The current study assessed the effectiveness of combined aerobic exercise and laser phototherapy on the coagulation profile and body measurements in older adults with obesity compared to aerobic exercise alone, which has not been adequately explored. We included 76 obese people (50% women and 50% men) with a mean age of 67.83 ± 4.84 years and a body mass index of 34.55 ± 2.67 kg/m 2 . The participants were randomly assigned to the experimental group (which received aerobic training with laser phototherapy) and the control group (which received aerobic training alone) for three months. From the baseline to the final analysis, the absolute changes in specific coagulation biomarker levels (fibrinogen, fibrin fragment D, prothrombin time, Kaolin-Cephalin Coagulation Time), and contributing parameters (C-reactive protein and total cholesterol), were assessed. In comparison to the control group, the experimental group showed significant improvements in all evaluated measures (p < 0.001).","source_id":"source_5","support_kind":"candidate_source_row"}]},{"claim_id":"claim_30","claim":"Within-corpus tension for the skeletal fracture bone class is minimal because Egan 2013 is the sole curated source in this outcome class and there are no non-orthogonal same-outcome pairs in the cross-study disagreement map to contrast against it. Readers comparing this outcome class against the broader synthesis should note that any apparent contradiction is a labeling artifact rather than a disagreement between studies. Consequently, the honest summary for this subsection is that the curated evidence base for skeletal, fracture, and bone outcomes in the Aerobic exercise literature is sparse, indirect, and not yet anchored by a clinical bone endpoint.","citation_support":[],"candidate_sources":[{"study":"Physical Activity on Telomere Length as a Biomarker for Aging: A Systematic Review","year":2022,"doi":"10.1186/s40798-022-00503-1","url":"https://doi.org/10.1186/s40798-022-00503-1","population":"not extracted","intervention_or_exposure":"not extracted","comparator":"not extracted","endpoint":"not extracted","effect":"not extracted","risk_of_bias":"not appraised in public sidecar","directness":"review-level","excerpt":"BACKGROUND: Overall life expectancy continues to rise, approaching 80 years of age in several developed countries. However, healthy life expectancy lags far behind, which has, in turn, contributed to increasing costs in healthcare. One way to improve health and attenuate the socio-economic impact of an aging population is to increase overall fitness through physical activity. Telomere attrition or shortening is a well-known molecular marker in aging. As such, several studies have focused on whether exercise influences health and aging through telomere biology. This systematic review examines the recent literature on the effect of physical activity on telomere length (TL) and/or telomerase activity as molecular markers of aging. METHODS: A focused search was performed in the databases PubMed and Web of Science for retrieving relevant articles over the past ten years. The search contained the following keywords: exercise, sport, physical activity, fitness, sedentary, physical inactivity, telomere, telomere length, t/s ratio, and telomerase. PRISMA guidelines for systematic reviews were observed.","source_id":"source_1","support_kind":"candidate_source_row"},{"study":"The benefits of regular aerobic exercise training on cerebrovascular function and cognition in older adults","year":2023,"doi":"10.1007/s00421-023-05154-y","url":"https://doi.org/10.1007/s00421-023-05154-y","population":"not extracted","intervention_or_exposure":"not extracted","comparator":"not extracted","endpoint":"not extracted","effect":"not extracted","risk_of_bias":"not appraised in public sidecar","directness":"primary","excerpt":"We compared the differences in cerebrovascular and cognitive function between 13 aerobic exercise trained, older adults and 13 age-, height- and sex-matched sedentary, untrained controls. We determined whether other measures accounted for differences in cerebrovascular and cognitive function between these groups and examined the associations between these functions. Participants undertook anthropometric, mood, cardiovascular, exercise performance, strength, cerebrovascular, and cognitive measurements, and a blood collection. Transcranial Doppler ultrasonography determined cerebrovascular responsiveness (CVR) to hypercapnia and cognitive stimuli. The trained group had a higher CVR to hypercapnia (80.3 ± 7.2 vs 35.1 ± 6.7%, P < 0.001), CVR to cognitive stimuli (30.1 ± 2.9 vs 17.8 ± 1.4%, P = 0.001) and total composite cognitive score (117 ± 2 vs 98 ± 4, P < 0.001) than the controls. These parameters no longer remained statistically different between the groups following adjustments for covariates. There were positive correlations between the total composite cognitive score and CVR to hypercapnia (r = 0.474, P = 0.014) and CVR to cognitive stimuli (r = 0.685, P < 0.001).","source_id":"source_2","support_kind":"candidate_source_row"},{"study":"Home-based high-intensity interval training improves cardiorespiratory fitness: a systematic review and meta-analysis","year":2023,"doi":"10.1186/s13102-023-00777-2","url":"https://doi.org/10.1186/s13102-023-00777-2","population":"not extracted","intervention_or_exposure":"not extracted","comparator":"not extracted","endpoint":"not extracted","effect":"not extracted","risk_of_bias":"not appraised in public sidecar","directness":"review-level","excerpt":"BACKGROUND: High-intensity interval training (HIIT) is an effective methods to improve maximal oxygen uptake. However, there is no definitive conclusion about the specific effectiveness of home-based HIIT. This review investigated the effects of home-based HIIT on cardiorespiratory fitness in a systematic review and meta-analysis. METHODS: Four electronic databases were searched (PubMed, Cochran database, Web of Science, Igaku Chuo Zasshi) for studies through March 25, 2023. Eligibility criteria include randomized controlled trials of home-based HIIT in adult people regardless disease or handicaped. Comparisons were made between non-exercise controls, laboratory-based HIIT, and moderate-intensity continuous training (MICT). The primary outcome was defined as cardiorespiratory fitness and the secondary outcome was defined as patient-reported outcomes. The standardized mean difference (SMD) with 95% confidence intervals (CIs) was calculated for quantitative indices. The random-effect model was used as the pooling method. RESULTS: Two hundred seven studies were identified, and 15 satisfied the inclusion criteria.","source_id":"source_3","support_kind":"candidate_source_row"},{"study":"Post‐exercise hot water immersion enhances haemodynamic and vascular benefits of exercise without further improving cardiorespiratory fitness, glucose, lipids or inflammation","year":2025,"doi":"10.1113/JP288873","url":"https://doi.org/10.1113/JP288873","population":"not extracted","intervention_or_exposure":"not extracted","comparator":"not extracted","endpoint":"not extracted","effect":"not extracted","risk_of_bias":"not appraised in public sidecar","directness":"primary","excerpt":"There is considerable overlap between the mechanisms underlying the health benefits of exercise training and heat therapy. However, it remains unclear whether combining heat therapy with exercise can enhance improvements in cardiovascular and metabolic health. The present study investigated whether post-exercise hot water immersion (EX+HWI) could augment improvements in cardiorespiratory fitness, cardiovascular and metabolic health compared to post-exercise thermoneutral water immersion (EX+TWI). Twenty-four physically inactive middle-aged adults (age: 58 ± 5 years; body mass index: 28 ± 3 kg m - 2 ; 13 females) were randomly allocated to 8 weeks of supervised EX+HWI (n = 12) or EX+TWI (n = 12). Moderate-intensity aerobic exercise (65-75% maximum heart rate) was performed for 30 min followed by 30 min of immersion at 40°C or 34°C, two to four times per week (total 24 sessions). Cardiorespiratory fitness, brachial artery flow-mediated dilatation, aortic pulse wave velocity, blood pressure and circulating lipids, glucose and inflammatory markers were assessed pre- and post-intervention.","source_id":"source_4","support_kind":"candidate_source_row"},{"study":"Effect of exercise training with laser phototherapy on homeostasis balance resistant to hypercoagulability in seniors with obesity: a randomized trial","year":2023,"doi":"10.1038/s41598-023-30550-x","url":"https://doi.org/10.1038/s41598-023-30550-x","population":"not extracted","intervention_or_exposure":"not extracted","comparator":"not extracted","endpoint":"not extracted","effect":"not extracted","risk_of_bias":"not appraised in public sidecar","directness":"primary","excerpt":"The prevalence of obesity has increased the incidence of obesity-related coagulation disorders. The current study assessed the effectiveness of combined aerobic exercise and laser phototherapy on the coagulation profile and body measurements in older adults with obesity compared to aerobic exercise alone, which has not been adequately explored. We included 76 obese people (50% women and 50% men) with a mean age of 67.83 ± 4.84 years and a body mass index of 34.55 ± 2.67 kg/m 2 . The participants were randomly assigned to the experimental group (which received aerobic training with laser phototherapy) and the control group (which received aerobic training alone) for three months. From the baseline to the final analysis, the absolute changes in specific coagulation biomarker levels (fibrinogen, fibrin fragment D, prothrombin time, Kaolin-Cephalin Coagulation Time), and contributing parameters (C-reactive protein and total cholesterol), were assessed. In comparison to the control group, the experimental group showed significant improvements in all evaluated measures (p < 0.001).","source_id":"source_5","support_kind":"candidate_source_row"}]}]}},{"name":"claim_graph.json","media_type":"application/json","content":{"publication_id":"7fbd93f4-7470-4fcd-8d68-576c76768953","content_hash":"sha256:10232cb8d2488a2b6a85a9667ea32195f5abd21e01eef6fb253c0d6296d0e40b","nodes":[{"id":"7fbd93f4-7470-4fcd-8d68-576c76768953","type":"publication","title":"Research Synthesis: Aerobic exercise — full paper"},{"id":"claim_1","type":"claim","text":"Evidence-honesty note: 17/33 retained sources are coded as null or no extracted directional signal; this corpus is non-supportive for clinical efficacy claims and hypothesis-generating only. Source-bundle reconciliation note: Directional coding is conservative claim-level coding from extracted claim records, not a statement that the source texts contain no directional findings; source-level positive, negative, or unclear findings should be interpreted through the coded outcome class, directness, and claim-count fields. The retained evidence has no direct interventional hard-endpoint evidence; indirect, review-level, adjacent, or mechanistic sources are used only to bound interpretation. The conclusion therefore does not support broad causal, clinical, or policy claims. This paper synthesizes evidence on Aerobic exercise across 33 included source papers and 2116 high-confidence extracted claims. The evidence profile contains no sources classified primarily as direct interventional hard-endpoint evidence, 20 adjacent clinical sources, and no sources classified primarily as mechanistic or model-system evidence, with 179 cross-study disagreements across the evidence base."},{"id":"claim_2","type":"claim","text":"Evidence-honesty note: 17/33 retained sources are coded as null or no extracted directional signal; this corpus is non-supportive for clinical efficacy claims and hypothesis-generating only. Source-bundle reconciliation note: Directional coding is conservative claim-level coding from extracted claim records, not a statement that the source texts contain no directional findings; source-level positive, negative, or unclear findings should be interpreted through the coded outcome class, directness, and claim-count fields. The retained evidence has no direct interventional hard-endpoint evidence; indirect, review-level, adjacent, or mechanistic sources are used only to bound interpretation. The conclusion therefore does not support broad causal, clinical, or policy claims."},{"id":"claim_3","type":"claim","text":"This paper synthesizes evidence on Aerobic exercise across 33 included source papers and 2116 high-confidence extracted claims."},{"id":"claim_4","type":"claim","text":"The evidence profile contains no sources classified primarily as direct interventional hard-endpoint evidence, 20 adjacent clinical sources, and no sources classified primarily as mechanistic or model-system evidence, with 179 cross-study disagreements across the evidence base."},{"id":"claim_5","type":"claim","text":"Positive study-level signals are summarized in the muscle function, contextual adjacent evidence and cardiometabolic outcome classes, null signals in the contextual adjacent evidence, cardiometabolic and muscle function outcome classes, and negative signals in the cardiometabolic outcome class. The paper therefore interprets the corpus as a tiered evidence profile rather than as a single pooled effect."},{"id":"claim_6","type":"claim","text":"The conclusion is that Aerobic exercise should be treated as a bounded geroscience hypothesis: the retained clinical and adjacent evidence profile defines the scope for targeted testing, while mixed and null findings limit any unqualified anti-aging claim."},{"id":"claim_7","type":"claim","text":"The geroscience hypothesis offers a useful lens on why Aerobic exercise has become a recurring reference point in this debate. The hypothesis holds that interventions targeting the upstream biology of aging, rather than any single downstream disease, may yield larger and more durable effects on multimorbidity than disease-by-disease treatment strategies, and it has been operationalized most visibly in trials of candidate geroprotectors such as metformin, rapalogs, and senolytics. Within that framework, Aerobic exercise is interesting precisely because it does not fit cleanly into the repurposed-molecule or novel-development categories: it is a non-pharmacologic, behaviorally mediated stimulus with systemic effects on mitochondrial biogenesis, insulin signaling, low-grade inflammation, and vascular endothelial function, all pathways that drug candidates in the geroscience pipeline are also trying to engage. The intervention logic, in other words, converges: the question of whether Aerobic exercise modifies aging biology shares endpoints, surrogate markers, and mechanistic language with the question of whether metformin or any rapalog does so, and the field has been increasingly willing to hold Aerobic exercise to the same evidentiary standards. But there is an important asymmetry, namely that Aerobic exercise has no patent, no phase I/II/III roadmap, and no commercial sponsor with an interest in funding the long, hard-outcome trials that the geroscience community has so far largely failed to deliver for any candidate. The result is an evidence base that is dense with short-term surrogate-endpoint trials, sparse on hard clinical outcomes, and organized, when it is organized at all, around the conventions of sports medicine rather than those of aging research."},{"id":"claim_8","type":"claim","text":"Several unresolved questions prevent any simple endorsement of Aerobic exercise as a geroscience intervention, and the sources themselves make those questions visible. The second concerns tradeoffs: a 12-week post-exercise hot-water immersion adjunct produced additional haemodynamic and vascular benefits in physically inactive middle-aged adults (mean age 58 ± 5 years, BMI 28 ± 3 kg/m²) but did not further improve cardiorespiratory fitness, glucose, lipids, or inflammation (Steward 2025), suggesting that added components may shift benefit distribution rather than amplify it. The third concerns population specificity, as outcomes in type 2 diabetes (OConnor 2025), obesity (Elsayed 2023, Jayedi 2024), COPD (Latimer 2022), and early Alzheimer's (Morris 2017) appear to vary with baseline comorbidity in ways that aggregated meta-analyses obscure. The fifth concerns dose-response itself, with the American College of Sports Medicine framework cited by Jayedi 2024 implying nonlinear effects of Aerobic exercise on weight loss that the available trials are not powered to resolve."},{"id":"claim_9","type":"claim","text":"The contribution of this synthesis is to take the apparently simple question, does Aerobic exercise modify aging-relevant outcomes, and to decompose it into the smaller, more answerable questions that the sources can actually bear. The synthesis proceeds by weighting evidence at the level of outcome class rather than study, by separating clinical-outcome reports from mechanistic-surrogate reports, and by treating population specificity as a first-class variable rather than a nuisance term. It also explicitly refuses to assert that Aerobic exercise extends lifespan, prevents cognitive decline, or reverses multimorbidity on the basis of the present sources, framing the field's central question as the question of whether, for whom, and at what dose Aerobic exercise produces clinically meaningful gains on hard endpoints rather than surrogate ones, the kind of question for which the available evidence remains, at best, suggestive. The synthesis that follows is therefore structured as a weighted, tension-aware reading of the sources, not as a vote count, and its central claim is that the Aerobic exercise anti-aging case is mechanistically plausible and directionally favorable in some outcome classes, but is incomplete as currently constituted, and that the missing pieces are empirical rather than rhetorical."},{"id":"claim_10","type":"claim","text":"At the preclinical and disease-model level, aerobic exercise is associated with a coherent set of physiological adaptations that map onto geroscience-relevant pathways, although the source-level evidence for any single mechanism is uneven. Mitochondrial remodeling has been documented in human skeletal muscle, where short-term cycling protocols produced reproducible transcript and protein-level adaptations in oxidative-phosphorylation machinery (Egan 2013), and similar mitochondrial responses have been observed in patient populations such as those with chronic obstructive pulmonary disease, where the maximal aerobic power per mitochondrion can be partially restored by training (Latimer 2022). Vascular mechanisms have been investigated using animal models of vascular aging, in which moderate-intensity aerobic exercise modulated nitric-oxide-dependent vasorelaxation and adropin signalling (Fujie 2021), and an exploratory histological study compared aerobic exercise against an alternative vascular-aging intervention in rats (Damay 2023). Translational relevance to humans remains uncertain. Cardiometabolic mechanisms have been examined in obese older adults, where combined exercise and phototherapy shifted hemostasis markers resistant to hypercoagulability (Elsayed 2023). However, not all mechanistic effects observed in disease models translate cleanly: in middle-aged inactive adults, adding post-exercise hot-water immersion enhanced some hemodynamic and vascular responses without producing additional improvements in cardiorespiratory fitness, glucose, lipids, or systemic inflammation (Steward 2025), illustrating that physiological signals sensitive to one manipulation may remain unchanged for adjacent endpoints. The cumulative picture from the preclinical and disease-model literature is therefore that aerobic exercise engages several plausibly geroprotective axes, but that effect direction and magnitude are endpoint-specific, an observation that carries forward into the human evidence base."},{"id":"claim_11","type":"claim","text":"Several methodological questions recur across the aerobic exercise literature and constrain the strength with which clinical recommendations can currently be made. First, the endpoints most often reported are surrogate or intermediate outcomes — flow-mediated dilation, V̇O2peak, body-fat percentage, telomere length, cognitive composite scores — rather than hard clinical events, and the methodological caution that surrogate associations do not guarantee hard-outcome validity (Ioannidis 2005) applies directly to this evidence base. Second, intervention duration varies dramatically, from eight-week protocols (Hinchman 2022; Tanaka 2012) to twelve-month follow-ups (Voss 2010), and the trial-level signal sometimes emerges only at the longer timepoints, complicating dose-response inference. Third, comparator arms differ widely, ranging from non-exercise or stretching controls to active comparators such as phototherapy (Elsayed 2023), pioglitazone (OConnor 2025), or electronic cigarette exposure in animal work (Damay 2023), which limits cross-study comparability. Fourth, the literature includes both mechanistic and clinical outcomes within the same outcome classes, producing the tension patterns observed in the synthesis — for example, positive muscle-function signals in trials of glucose-intolerant or multimorbid adults (Baker 2010; Lo 2021) coexist with null or mixed signals in broader reviews of combination training (Bai 2022) and in longer-duration cognitive trials (Voss 2010; Hinchman 2022). Finally, concurrent interventions such as individualized programming, behavioral engagement, or adjunctive brain stimulation are common, raising the question of whether reported effects should be attributed to aerobic exercise per se or to the package in which it is delivered (Hinchman 2022; Thomas 2021; Lo 2021). Until these methodological questions are addressed through more standardized endpoints, longer follow-up, and more consistent comparator design, the aerobic exercise case as a geroprotector will continue to be characterized by mechanistic promise coexisting with mixed human-RCT evidence and unsettled boundary conditions."},{"id":"claim_12","type":"claim","text":"The following fields were extracted from each included source: study design, population / cohort, intervention or exposure, comparator, outcome class, effect direction, effect size, confidence interval or credible interval, p-value, sample size, follow-up duration, risk-of-bias rating. Under the calibration rule, source verification in the public bundle is limited to reference-level metadata; exact statistics and effect directions are drawn from these structured extraction artifacts (the synthesis manifest, risk-of-bias appraisal, and claim registry) rather than from re-parsed full text."},{"id":"claim_13","type":"claim","text":"Per-source risk-of-bias was rated using design-appropriate Cochrane RoB-2 (RCTs), ROBINS-I (non-randomised studies), and AMSTAR-2 (systematic reviews / meta-analyses). Ratings recorded in `risk_of_bias.json`."},{"id":"claim_14","type":"claim","text":"Evidence-tension synthesis: claims grouped by outcome class (cardiometabolic, contextual adjacent evidence, dosing and pharmacokinetics, muscle function, skeletal, fracture, and bone); within-class agreement, disagreement, and directness gaps surfaced explicitly. Quantitative pooling applied only where ≥3 sources reported a comparable endpoint with extractable effect estimates."},{"id":"claim_15","type":"claim","text":"Source retrieval, claim extraction, evidence routing, and prose drafting were assisted by large language models under a deterministic audit-trail protocol. Every manuscript claim is traceable to a source record in the supplementary `manifest.json`. Final eligibility and interpretation decisions are author-verified."},{"id":"claim_16","type":"claim","text":"| Evidence domain | Corpus slice | Strongest signal | Directness | Main limitation |"},{"id":"claim_17","type":"claim","text":"| Contextual Adjacent Evidence | n=18; claims=1101 | no extracted directional signal in 11/18 sources | 13 indirect; 5 review | limited corpus depth in this outcome class |"},{"id":"claim_18","type":"claim","text":"Outcome-class note:** Contextual Adjacent Evidence denotes background, boundary-condition, or adjacent-outcome sources. It is not pooled with direct outcome evidence; these sources bound scope, safety, methods, and translation rather than serving as equal-weight support for the main efficacy claim."},{"id":"claim_19","type":"claim","text":"Mechanistically, the three clinical or quasi-clinical sources speak to overlapping but non-identical cardiometabolic pathways. Steward 2025 isolates vascular and haemodynamic reactivity as the substrate responsive to thermal augmentation, leaving the canonical cardiometabolic risk markers (glucose, lipids, inflammation, fitness) unchanged beyond exercise itself. Elsayed 2023 implicates the coagulation-fibrinolysis axis, with laser phototherapy modulating hypercoagulability markers in obese seniors. Huang 2025 mechanistically grounds the body-fat signal in modality-specific energy expenditure and substrate utilization, where aerobic training exceeds resistance and combined regimens in sedentary adults. Preclinical and mechanistic data therefore support multiple distinct biological handles, while the human clinical RCT-level evidence for any single handle remains narrow."},{"id":"claim_20","type":"claim","text":"Within-corpus tensions are most visible in the cardiometabolic class. Steward 2025 and Donath 2017 (severity 3) also disagree on whether adjunctive stimuli shift cardiometabolic status, with Donath 2017 finding no cardiometabolic perturbation from acute aerobic exercise. Together these tensions suggest that the cardiometabolic case for aerobic exercise is boundary-condition-dependent, modulated by population (sedentary vs active, obese vs normal-weight), modality (aerobic alone vs aerobic + heat or phototherapy), and endpoint class (vascular reactivity vs coagulation vs body composition)."},{"id":"claim_21","type":"claim","text":"Eighteen of the curated sources populate the contextual/mixed outcome class, and together they paint a heterogeneous picture that resists a single net-direction summary. These three sources anchor the contextual/mixed class with human-RCT or systematic-review evidence and supply the high-density numeric spine of this subsection (see the evidence synthesis for the full per-study p-value inventory)."},{"id":"claim_22","type":"claim","text":"The vascular-endothelial and arterial-stiffness sub-thread is dominated by null or directionally mixed findings despite robust continuous-aerobic RCT inputs. When read alongside Bull 2020, which articulates WHO 2000 physical-activity guidance rather than a primary endpoint, the vascular thread shows that statistical superiority versus sedentary comparators does not automatically translate into a positive verdict against active comparators — a recurrent pattern across the contextual/mixed class (Bull 2020; Tao 2023; You 2022)."},{"id":"claim_23","type":"claim","text":"Salisbury 2023 is the only corpus study mapped to the dosing/pharmacokinetics outcome class for aerobic exercise, and it is positioned as an indirect observational cohort in adults rather than a clinical RCT [Salisbury 2023]. The study correlated changes in cardiorespiratory fitness (CRF) with resting plasma neurotrophic factors in the setting of Alzheimer's dementia, treating the exercise dose–response relationship as a biomarker-mapping exercise rather than a pharmacokinetic clearance study [Salisbury 2023]. The endpoint of interest is therefore the correspondence between training-dose surrogates and downstream neurotrophic signaling, not drug-style absorption or distribution [Salisbury 2023]. The synthesis classifies this evidence as indirect because the dosing construct is operationalized through change-in-CRF rather than a quantified exercise prescription [Salisbury 2023]."},{"id":"claim_24","type":"claim","text":"No direction of effect could be extracted, and the source's effect direction field is null, which the analysis treats as evidence against a robust monotonic dose–response signal in this particular study [Salisbury 2023]. The reported p-values can be interpreted as descriptive of a single indirect observational cohort and not as a pooled dose–response estimate [Salisbury 2023]."},{"id":"claim_25","type":"claim","text":"Mechanistically, the mechanistic substrate underlying this null finding would normally invoke exercise-induced neurotrophin release, yet Salisbury 2023 found no detectable correspondence between CRF change and plasma neurotrophic factors, suggesting either that resting peripheral neurotrophins are insensitive to aerobic dose in Alzheimer's dementia or that the dosing construct itself was too loosely operationalized to detect an effect [Salisbury 2023]. Because the source carries directness = indirect and the design is observational, the study is better framed as hypothesis-generating for a future clinical RCT than as confirmatory mechanistic human data [Salisbury 2023]."},{"id":"claim_26","type":"claim","text":"Within the corpus there is no second dosing/pharmacokinetics study to triangulate Salisbury 2023, so no within-corpus tension can be named in this outcome class, and the brief's broader cross-class signal of null findings dominating contextual-other and cardiometabolic endpoints is consistent with — but not directly tested against — this single indirect cohort [Salisbury 2023]. Together these clinical RCT and cohort designs establish the trial summary for the muscle-function class: aerobic interventions of 8 weeks to several months, adult and older-adult populations, and physical-fitness or cardiorespiratory endpoints."},{"id":"claim_27","type":"claim","text":"Egan 2013 is the single curated human-physiology study contributing to the skeletal, fracture, and bone outcome class, and it is positioned as indirect rather than direct evidence because its primary endpoint is molecular kinetics in skeletal muscle rather than a clinical fracture or bone-density outcome. The study is observational in design with a short, fixed exposure window and a very small cohort, which limits inferential strength for skeletal endpoints. No fracture incidence, bone mineral density, or surrogate imaging endpoint is reported; the only directness-relevant signal is that adaptation was measured in skeletal muscle tissue, not in bone. Readers should therefore treat any inference about bone outcomes from this source as exploratory rather than confirmatory."},{"id":"claim_28","type":"claim","text":"Because these statistics index molecular adaptation in muscle, the relevant numerator is the number of gene/protein endpoints reaching P < 0.05 within the curated set, not a clinical fracture or bone-density effect size; the source does not provide a hazard ratio, odds ratio, or relative risk for any bone endpoint. No 95% confidence intervals are reported in the curated excerpt, and the source does not state a primary analytic endpoint. Effect direction is recorded as null for the skeletal fracture bone class because the molecular findings, while positive in muscle, do not translate within the source to a directional bone outcome."},{"id":"claim_29","type":"claim","text":"Mechanistically, the Egan 2013 substrate is a short-term aerobic-exercise challenge in healthy sedentary adults, with molecular readouts in skeletal muscle; it is therefore best characterized as a mechanistic human study rather than a clinical RCT, and its applicability to skeletal fracture bone endpoints requires an inferential bridge from muscle adaptation to bone remodeling. That bridge is not made within the curated source, and the source itself does not assert any bone-relevant mechanism. In a broader anti-aging framework, an aerobic stimulus that drives repeatable transcript and protein responses in muscle (P < 0.05 across multiple gene/protein endpoints) is biologically plausible as a modifier of mechanotransductive loading on bone, but plausibility is not evidence and no bone endpoint is measured. The within-corpus record for this outcome class is therefore mechanistic-muscle data tagged to a skeletal outcome label, with directness acknowledged as indirect."},{"id":"claim_30","type":"claim","text":"Within-corpus tension for the skeletal fracture bone class is minimal because Egan 2013 is the sole curated source in this outcome class and there are no non-orthogonal same-outcome pairs in the cross-study disagreement map to contrast against it. Readers comparing this outcome class against the broader synthesis should note that any apparent contradiction is a labeling artifact rather than a disagreement between studies. Consequently, the honest summary for this subsection is that the curated evidence base for skeletal, fracture, and bone outcomes in the Aerobic exercise literature is sparse, indirect, and not yet anchored by a clinical bone endpoint."},{"id":"source_1","type":"source","study":"Physical Activity on Telomere Length as a Biomarker for Aging: A Systematic Review","year":2022,"doi":"10.1186/s40798-022-00503-1","url":"https://doi.org/10.1186/s40798-022-00503-1","population":"not extracted","intervention_or_exposure":"not extracted","comparator":"not extracted","endpoint":"not extracted","effect":"not extracted","risk_of_bias":"not appraised in public sidecar","directness":"review-level","excerpt":"BACKGROUND: Overall life expectancy continues to rise, approaching 80 years of age in several developed countries. However, healthy life expectancy lags far behind, which has, in turn, contributed to increasing costs in healthcare. One way to improve health and attenuate the socio-economic impact of an aging population is to increase overall fitness through physical activity. Telomere attrition or shortening is a well-known molecular marker in aging. As such, several studies have focused on whether exercise influences health and aging through telomere biology. This systematic review examines the recent literature on the effect of physical activity on telomere length (TL) and/or telomerase activity as molecular markers of aging. METHODS: A focused search was performed in the databases PubMed and Web of Science for retrieving relevant articles over the past ten years. The search contained the following keywords: exercise, sport, physical activity, fitness, sedentary, physical inactivity, telomere, telomere length, t/s ratio, and telomerase. PRISMA guidelines for systematic reviews were observed."},{"id":"source_2","type":"source","study":"The benefits of regular aerobic exercise training on cerebrovascular function and cognition in older adults","year":2023,"doi":"10.1007/s00421-023-05154-y","url":"https://doi.org/10.1007/s00421-023-05154-y","population":"not extracted","intervention_or_exposure":"not extracted","comparator":"not extracted","endpoint":"not extracted","effect":"not extracted","risk_of_bias":"not appraised in public sidecar","directness":"primary","excerpt":"We compared the differences in cerebrovascular and cognitive function between 13 aerobic exercise trained, older adults and 13 age-, height- and sex-matched sedentary, untrained controls. We determined whether other measures accounted for differences in cerebrovascular and cognitive function between these groups and examined the associations between these functions. Participants undertook anthropometric, mood, cardiovascular, exercise performance, strength, cerebrovascular, and cognitive measurements, and a blood collection. Transcranial Doppler ultrasonography determined cerebrovascular responsiveness (CVR) to hypercapnia and cognitive stimuli. The trained group had a higher CVR to hypercapnia (80.3 ± 7.2 vs 35.1 ± 6.7%, P < 0.001), CVR to cognitive stimuli (30.1 ± 2.9 vs 17.8 ± 1.4%, P = 0.001) and total composite cognitive score (117 ± 2 vs 98 ± 4, P < 0.001) than the controls. These parameters no longer remained statistically different between the groups following adjustments for covariates. There were positive correlations between the total composite cognitive score and CVR to hypercapnia (r = 0.474, P = 0.014) and CVR to cognitive stimuli (r = 0.685, P < 0.001)."},{"id":"source_3","type":"source","study":"Home-based high-intensity interval training improves cardiorespiratory fitness: a systematic review and meta-analysis","year":2023,"doi":"10.1186/s13102-023-00777-2","url":"https://doi.org/10.1186/s13102-023-00777-2","population":"not extracted","intervention_or_exposure":"not extracted","comparator":"not extracted","endpoint":"not extracted","effect":"not extracted","risk_of_bias":"not appraised in public sidecar","directness":"review-level","excerpt":"BACKGROUND: High-intensity interval training (HIIT) is an effective methods to improve maximal oxygen uptake. However, there is no definitive conclusion about the specific effectiveness of home-based HIIT. This review investigated the effects of home-based HIIT on cardiorespiratory fitness in a systematic review and meta-analysis. METHODS: Four electronic databases were searched (PubMed, Cochran database, Web of Science, Igaku Chuo Zasshi) for studies through March 25, 2023. Eligibility criteria include randomized controlled trials of home-based HIIT in adult people regardless disease or handicaped. Comparisons were made between non-exercise controls, laboratory-based HIIT, and moderate-intensity continuous training (MICT). The primary outcome was defined as cardiorespiratory fitness and the secondary outcome was defined as patient-reported outcomes. The standardized mean difference (SMD) with 95% confidence intervals (CIs) was calculated for quantitative indices. The random-effect model was used as the pooling method. RESULTS: Two hundred seven studies were identified, and 15 satisfied the inclusion criteria."},{"id":"source_4","type":"source","study":"Post‐exercise hot water immersion enhances haemodynamic and vascular benefits of exercise without further improving cardiorespiratory fitness, glucose, lipids or inflammation","year":2025,"doi":"10.1113/JP288873","url":"https://doi.org/10.1113/JP288873","population":"not extracted","intervention_or_exposure":"not extracted","comparator":"not extracted","endpoint":"not extracted","effect":"not extracted","risk_of_bias":"not appraised in public sidecar","directness":"primary","excerpt":"There is considerable overlap between the mechanisms underlying the health benefits of exercise training and heat therapy. However, it remains unclear whether combining heat therapy with exercise can enhance improvements in cardiovascular and metabolic health. The present study investigated whether post-exercise hot water immersion (EX+HWI) could augment improvements in cardiorespiratory fitness, cardiovascular and metabolic health compared to post-exercise thermoneutral water immersion (EX+TWI). Twenty-four physically inactive middle-aged adults (age: 58 ± 5 years; body mass index: 28 ± 3 kg m - 2 ; 13 females) were randomly allocated to 8 weeks of supervised EX+HWI (n = 12) or EX+TWI (n = 12). Moderate-intensity aerobic exercise (65-75% maximum heart rate) was performed for 30 min followed by 30 min of immersion at 40°C or 34°C, two to four times per week (total 24 sessions). Cardiorespiratory fitness, brachial artery flow-mediated dilatation, aortic pulse wave velocity, blood pressure and circulating lipids, glucose and inflammatory markers were assessed pre- and post-intervention."},{"id":"source_5","type":"source","study":"Effect of exercise training with laser phototherapy on homeostasis balance resistant to hypercoagulability in seniors with obesity: a randomized trial","year":2023,"doi":"10.1038/s41598-023-30550-x","url":"https://doi.org/10.1038/s41598-023-30550-x","population":"not extracted","intervention_or_exposure":"not extracted","comparator":"not extracted","endpoint":"not extracted","effect":"not extracted","risk_of_bias":"not appraised in public sidecar","directness":"primary","excerpt":"The prevalence of obesity has increased the incidence of obesity-related coagulation disorders. The current study assessed the effectiveness of combined aerobic exercise and laser phototherapy on the coagulation profile and body measurements in older adults with obesity compared to aerobic exercise alone, which has not been adequately explored. We included 76 obese people (50% women and 50% men) with a mean age of 67.83 ± 4.84 years and a body mass index of 34.55 ± 2.67 kg/m 2 . The participants were randomly assigned to the experimental group (which received aerobic training with laser phototherapy) and the control group (which received aerobic training alone) for three months. From the baseline to the final analysis, the absolute changes in specific coagulation biomarker levels (fibrinogen, fibrin fragment D, prothrombin time, Kaolin-Cephalin Coagulation Time), and contributing parameters (C-reactive protein and total cholesterol), were assessed. In comparison to the control group, the experimental group showed significant improvements in all evaluated measures (p < 0.001)."},{"id":"source_6","type":"source","study":"Aerobic Exercise and Weight Loss in Adults","year":2024,"doi":"10.1001/jamanetworkopen.2024.52185","url":"https://doi.org/10.1001/jamanetworkopen.2024.52185","population":"not extracted","intervention_or_exposure":"not extracted","comparator":"not extracted","endpoint":"not extracted","effect":"not extracted","risk_of_bias":"not appraised in public sidecar","directness":"primary","excerpt":"IMPORTANCE: Current guidance on the duration of aerobic exercise recommended in existing guidelines comes primarily from individual trials. Meta-analyses are lacking to examine the dose-response association of aerobic exercise with adiposity measures. OBJECTIVE: To clarify the dose-response association of aerobic exercise with adiposity measures. DATA SOURCES: PubMed, Scopus, the Cochrane Central Register of Controlled Trials, and gray literature sources (ProQuest and ClinicalTrials.gov) from inception to April 30, 2024. STUDY SELECTION: Randomized clinical trials with intervention durations of at least 8 weeks evaluating the effects of supervised aerobic training on adults with overweight or obesity. DATA EXTRACTION AND SYNTHESIS: The PRISMA guidelines were followed to report the results of the meta-analysis. Data extraction was conducted by 2 teams of 2 reviewers each, working independently and in duplicate. Random-effects meta-analyses were performed to estimate mean differences and 95% CIs for each 30-minute per week aerobic exercise and to clarify the shape of the curvilinear associations."},{"id":"source_7","type":"source","study":"Effect of continuous aerobic exercise on endothelial function: A systematic review and meta-analysis of randomized controlled trials","year":2023,"doi":"10.3389/fphys.2023.1043108","url":"https://doi.org/10.3389/fphys.2023.1043108","population":"not extracted","intervention_or_exposure":"not extracted","comparator":"not extracted","endpoint":"not extracted","effect":"not extracted","risk_of_bias":"not appraised in public sidecar","directness":"review-level","excerpt":"Background: Current research suggests that continuous aerobic exercise can be effective in improving vascular endothelial function, while the effect between different intensities and durations of exercise is unclear. The aim of this study was to explore the effect of different durations and intensities of aerobic exercise on vascular endothelial function in different populations. Methods: Searches were performed in PubMed, Web of Science, and EBSCO databases. We included studies that satisfied the following criteria: 1) randomized controlled trials (RCTs); 2) including both an intervention and control group; 3) using flow-mediated dilation (FMD) as the outcome measure; and 4) testing FMD on the brachial artery. Results: From 3,368 search records initially identified, 41 studies were eligible for meta-analysis. There was a significant effect of continuous aerobic exercise on improving flow-mediated dilation (FMD) [weighted mean difference (WMD), 2.55, (95% CI, 1.93-3.16), p < 0.001]. Specifically, moderate-intensity [2.92 (2.02-3.825), p < 0.001] and vigorous-intensity exercise [2.58 (1.64-3.53), p < 0.001] significantly increased FMD. In addition, a longer duration [<12 weeks, 2."},{"id":"source_8","type":"source","study":"Whole-body and muscle responses to aerobic exercise training and withdrawal in ageing and COPD","year":2022,"doi":"10.1183/13993003.01507-2021","url":"https://doi.org/10.1183/13993003.01507-2021","population":"not extracted","intervention_or_exposure":"not extracted","comparator":"not extracted","endpoint":"not extracted","effect":"not extracted","risk_of_bias":"not appraised in public sidecar","directness":"primary","excerpt":"BACKGROUND: Chronic obstructive pulmonary disease (COPD) patients exhibit lower peak oxygen uptake ( V ' O 2 peak ), altered muscle metabolism and impaired exercise tolerance compared with age-matched controls. Whether these traits reflect muscle-level deconditioning (impacted by ventilatory constraints) and/or dysfunction in mitochondrial ATP production capacity is debated. By studying aerobic exercise training (AET) at a matched relative intensity and subsequent exercise withdrawal period we aimed to elucidate the whole-body and muscle mitochondrial responsiveness of healthy young (HY), healthy older (HO) and COPD volunteers to whole-body exercise. METHODS: HY (n=10), HO (n=10) and COPD (n=20) volunteers were studied before and after 8 weeks of AET (65% V ' O 2 peak ) and after 4 weeks of exercise withdrawal. V ' O 2 peak , muscle maximal mitochondrial ATP production rate (MAPR), mitochondrial content, mitochondrial DNA (mtDNA) copy number and abundance of 59 targeted fuel metabolism mRNAs were determined at all time-points."},{"id":"source_9","type":"source","study":"Effects of Different Intensities and Durations of Aerobic Exercise on Vascular Endothelial Function in Middle-Aged and Elderly People: A Meta-analysis","year":2022,"doi":"10.3389/fphys.2021.803102","url":"https://doi.org/10.3389/fphys.2021.803102","population":"not extracted","intervention_or_exposure":"not extracted","comparator":"not extracted","endpoint":"not extracted","effect":"not extracted","risk_of_bias":"not appraised in public sidecar","directness":"review-level","excerpt":"BACKGROUND: Previous studies have found that aerobic exercise was more effective in improving vascular endothelial function than resistance training, high-intensity interval training (HIIT), and other types of exercise, while the effects between different intensities and durations of aerobic exercise were unclear. Therefore, we performed this meta-analysis to investigate the effects of different intensities and durations of aerobic exercise on the vascular endothelial function of middle-aged and elderly people. METHODS: Databases were searched up to April 2021 for studies evaluating the influences of different intensities and durations of aerobic exercise on endothelial function assessed by flow-mediated dilation (FMD) among healthy middle-aged and elderly people. Data were pooled using random-effects models to obtain the weighted mean difference (WMD) and 95% confidence intervals (CIs). RESULTS: A total of 9 studies involving 221 participants fulfilled the inclusion criteria. Aerobic exercise improved the overall FMD of healthy middle-aged and elderly people [WMD, 1.33 (95% CI, 0.37-2.28), P < 0.05]."},{"id":"source_10","type":"source","study":"Effects of pioglitazone with and without exercise training on cardiorespiratory fitness and oxygen uptake kinetics in type 2 diabetes","year":2025,"doi":"10.1111/dom.16648","url":"https://doi.org/10.1111/dom.16648","population":"not extracted","intervention_or_exposure":"not extracted","comparator":"not extracted","endpoint":"not extracted","effect":"not extracted","risk_of_bias":"not appraised in public sidecar","directness":"primary","excerpt":"AIMS: Exercise tolerance is often impaired in type 2 diabetes (T2D), and barriers to regular exercise are common. This study evaluated whether 12 weeks of pioglitazone (PIO) therapy could enhance peak oxygen uptake (V̇O 2peak ) and the time constant of the primary phase of oxygen uptake (τV̇O 2p ) during submaximal exercise, compared with exercise training, and whether combining PIO with exercise would provide additional benefits in T2D. MATERIALS AND METHODS: Male participants with T2D were assigned to one of the following groups: (1) non-exercising control (CON, n = 12), (2) PIO (15 mg/day) alone (PIO, n = 6), (3) exercise training alone (EXC, n = 13), or (4) PIO combined with exercise (PIO + EXC, n = 7). Exercise involved aerobic and resistance training three times per week for 12 weeks. V̇O 2peak (incremental cycling) and τV̇O 2p , mean arterial pressure, and cardiac output (inert gas re-breathing) during cycling were assessed pre- and post-intervention. RESULTS: PIO and PIO + EXC groups showed reductions (p < 0.01) in glycated haemoglobin (HbA 1c ). V̇O 2peak increased (p < 0.05) and τV̇O 2p decreased (p < 0.01) in both the EXC (V̇O 2peak : 2.44 ± 0.38 to 2.73 ± 0."},{"id":"source_11","type":"source","study":"Effects of exercise on body fat percentage and cardiorespiratory fitness in sedentary adults: a systematic review and network meta-analysis","year":2025,"doi":"10.3389/fpubh.2025.1624562","url":"https://doi.org/10.3389/fpubh.2025.1624562","population":"not extracted","intervention_or_exposure":"not extracted","comparator":"not extracted","endpoint":"not extracted","effect":"not extracted","risk_of_bias":"not appraised in public sidecar","directness":"review-level","excerpt":"BACKGROUND: Sedentary behavior is increasingly prevalent worldwide and associated with numerous health concerns including obesity and cardiovascular diseases. This study aimed to evaluate the comparative effectiveness of various exercise interventions on body fat percentage and cardiorespiratory fitness in sedentary adults. METHODS: A systematic review and network meta-analysis of randomized controlled trials was conducted. Comprehensive searches were performed in PubMed, Embase, Web of Science, and Cochrane Library databases through December 10, 2024. All retrieved literature was imported into EndNote 21 for duplicate removal, and two reviewers independently screened articles and extracted data. Study quality was assessed using the ROB2 tool. Primary outcomes included body fat percentage (BF%), maximal oxygen uptake (VO₂max), and peak oxygen uptake (VO₂peak). Network meta-analysis used random-effects models with SUCRA ranking and low to moderate heterogeneity (I 2 = 28-41%). Publication bias was assessed using funnel plots. RESULTS: Fifty-one randomized controlled trials involving 2,201 participants were included. Risk of bias assessment showed 27 studies (52."},{"id":"source_12","type":"source","study":"Effects of Upper Body Exercise Training on Aerobic Fitness and Performance in Healthy People: A Systematic Review","year":2023,"doi":"10.3390/biology12030355","url":"https://doi.org/10.3390/biology12030355","population":"not extracted","intervention_or_exposure":"not extracted","comparator":"not extracted","endpoint":"not extracted","effect":"not extracted","risk_of_bias":"not appraised in public sidecar","directness":"review-level","excerpt":"Purpose: This systematic review aimed to evaluate the effects of upper body endurance training (UBET) on oxygen uptake (VO 2 ) in healthy persons and derive evidence-based recommendations to improve upper body fitness and performance. Methods : Databases were systematically searched in accordance with PRISMA guidelines until 1 February 2023. Eligibility criteria included healthy male and female adults and older adults who underwent an UBET intervention. Outcomes of interest included physical fitness (VO 2peak and/ or VO 2 submax ) and transfer effects (i.e., effects from trained (VO 2peak ARM ) to untrained (VO 2peak LEG ) musculature). Results : The search identified 8293 records, out of which 27 studies reporting on 29 interventions met our eligibility criteria. The average duration of interventions was 6.8 ± 2.6 weeks with 3.2 ± 0.8 training sessions per week. For 21 of 29 interventions, significant increases in VO 2peak ARM were reported following UBET (+16.4% ± 8.3%). Three of the nine studies that analyzed transfer effects of untrained legs after upper body training exhibited significant increases in VO 2peak LEG (+9.3% ± 2.6%)."},{"id":"source_13","type":"source","study":"Graded Versus Constant-Load Aerobic Exercise in Pediatric Leukemia Survivors: A 12-Week RCT on Cardiorespiratory Fitness and Functional Performance","year":2026,"doi":"10.3390/healthcare14050608","url":"https://doi.org/10.3390/healthcare14050608","population":"not extracted","intervention_or_exposure":"not extracted","comparator":"not extracted","endpoint":"not extracted","effect":"not extracted","risk_of_bias":"not appraised in public sidecar","directness":"primary","excerpt":"Results: The G-AEx group exhibited significantly enhanced cardiorespiratory and functional outcomes compared to both the CL-AEx and control groups (all p < 0.05). Conclusions: In pediatric survivors of ALL, G-AEx demonstrated superior improvements in cardiorespiratory fitness and functional performance compared to CL-AEx over 12 weeks."},{"id":"source_14","type":"source","study":"Effects of Individualized Aerobic Exercise Training on Physical Activity and Health-Related Physical Fitness among Middle-Aged and Older Adults with Multimorbidity: A Randomized Controlled Trial","year":2021,"doi":"10.3390/ijerph18010101","url":"https://doi.org/10.3390/ijerph18010101","population":"not extracted","intervention_or_exposure":"not extracted","comparator":"not extracted","endpoint":"not extracted","effect":"not extracted","risk_of_bias":"not appraised in public sidecar","directness":"review-level","excerpt":"The presence of multimorbidity in middle-aged and older adults, which reduces their physical activity and quality of life, is a global health challenge. Exercise is one of the most important health behaviors that individuals can engage in. Previous studies have revealed that aerobic exercise training is beneficial for healthy middle-aged and older adults and those with various chronic diseases, but few studies have designed individualized aerobic exercise training for individuals with multimorbidity. Although individuals with multimorbidity are considerably less adherent to physical activity interventions, telephone-based motivational interviewing may help in strengthening motivation and promoting behavioral change for increasing physical activity and health-related physical fitness. This study aimed to examine whether a 12-week individualized aerobic exercise training in a rehabilitation center combined with telephone-based motivational interviewing is effective in promoting physical activity and health-related physical fitness among middle-aged and older adults with multimorbidity. A randomized controlled trial was conducted."},{"id":"source_15","type":"source","study":"Exercise engagement drives changes in cognition and cardiorespiratory fitness after 8 weeks of aerobic training in sedentary aging adults at risk of cognitive decline","year":2022,"doi":"10.3389/fresc.2022.923141","url":"https://doi.org/10.3389/fresc.2022.923141","population":"not extracted","intervention_or_exposure":"not extracted","comparator":"not extracted","endpoint":"not extracted","effect":"not extracted","risk_of_bias":"not appraised in public sidecar","directness":"primary","excerpt":"BACKGROUND: With our aging population, many individuals are at risk of developing age-related cognitive decline. Physical exercise has been demonstrated to enhance cognitive performance in aging adults. This study examined the effects of 8 weeks of aerobic exercise on cognitive performance and cardiorespiratory fitness in sedentary aging adults at risk for cognitive decline. METHODS: Fifty-two participants (age 62.9 ± 6.8, 76.9% female) engaged in eight weeks of moderate-to high-intensity exercise (19 in-person, 33 remotely). Global cognition was measured by the Repeatable Battery for the Assessment of Neuropsychological Status, the Delis-Kaplan Executive Function System, and the Digit Span subtest of the Wechsler Adult Intelligence Scale (WAIS) Fourth Edition. Cardiorespiratory fitness was measured via heart rate recovery at minute 1 (HRR1) and 2 (HRR2), and exercise engagement (defined as percent of total exercise time spent in the prescribed heart rate zone). We measured pre and post changes using paired t -tests and mixed effects models, and investigated the association between cardiorespiratory and cognitive performance using multiple regression models."},{"id":"source_16","type":"source","study":"Get Moving! Increases in Physical Activity Are Associated With Increasing Functional Connectivity Trajectories in Typically Aging Adults","year":2020,"doi":"10.3389/fnagi.2020.00104","url":"https://doi.org/10.3389/fnagi.2020.00104","population":"not extracted","intervention_or_exposure":"not extracted","comparator":"not extracted","endpoint":"not extracted","effect":"not extracted","risk_of_bias":"not appraised in public sidecar","directness":"primary","excerpt":"Background : Physical activity closely relates to cognition and brain structure as we age. However, the neural mechanisms underlying this relationship in humans remain less clear. Functional connectivity (FC), measured by task-free functional MRI (tf-fMRI) is a dynamic marker of network activity and may be a sensitive indicator of the brain's response to exercise over time. We aimed to test the longitudinal relationship between physical activity and FC trajectories in functionally normal older adults. Methods : Two hundred and twelve functionally normal, longitudinally-followed older adults completed the Physical Activity Scale for the Elderly (PASE) and tf-fMRI scans at each visit [mean = 1.5 visits (range:1-3)]. We studied FC of the default mode network (DMN), frontal-parietal (FP), subcortical networks (SubCort), and frontal-subcortical inter-network connectivity (FS), given that previous studies implicate these regions in age-related changes. Linear mixed-effects models examined the relationship between within-person changes in PASE and FC (in SD units), covarying for age, sex, education and systemic cardiovascular risk factors (heart rate, BMI and systolic blood pressure)."},{"id":"source_17","type":"source","study":"Aerobic Exercise versus Electronic Cigarette in Vascular Aging Process: First Histological Insight","year":2023,"doi":"10.1155/2023/8874599","url":"https://doi.org/10.1155/2023/8874599","population":"not extracted","intervention_or_exposure":"not extracted","comparator":"not extracted","endpoint":"not extracted","effect":"not extracted","risk_of_bias":"not appraised in public sidecar","directness":"primary","excerpt":"Smoking is related to vascular aging. However, the hazardous effect of e-cigarette is often debatable, with limited studies available. In contrast, moderate-intensity aerobic exercise is well known to decrease aortic stiffness. We provide novel research to determine the effect of e-cigarette and aerobic moderate-intensity exercise on the aortic structure of Wistar rats. A total of 26 male Wistar rats (Rattus norvegicus) 8 weeks aged, 200-250 g b.w., were randomly divided into 4 groups, namely, K0 (normal rats), K1 (rats were given moderate-intensity aerobic exercise by animal treadmill 20 m/30 min), K2 (rats were given e-cigarette with 6 mg nicotine, 40% propylene glycol, and 60% vegetable glycerine 30 min for 5 days/week), and K3 (rats were given e-cigarette and moderate-intensity aerobic exercise). After exposure for 6 weeks, all animals were sacrificed to isolate the aorta for histopathological analysis with hematoxylin-eosin stain to evaluate the elastic fiber layer and intimal-medial thickness. The Verhoeff-Van Gieson staining was done for quantification elastic lamina fragmentation."},{"id":"source_18","type":"source","study":"Impact of exercise on drug cravings: mediating role of cardiorespiratory fitness and inhibitory control","year":2025,"doi":"10.3389/fpsyg.2025.1540648","url":"https://doi.org/10.3389/fpsyg.2025.1540648","population":"not extracted","intervention_or_exposure":"not extracted","comparator":"not extracted","endpoint":"not extracted","effect":"not extracted","risk_of_bias":"not appraised in public sidecar","directness":"primary","excerpt":"BACKGROUND: Contemporary research has consistently demonstrated a link between physical exercise, inhibition, and drug cravings, with several hypotheses proposed to explain how exercise enhances inhibition. However, few studies have explored the mechanisms underlying this effect. This study investigates the pivotal role of cardiorespiratory fitness in mediating the impact of physical exercise on inhibition and drug cravings. METHODS: In this study, the researchers selected participants who had completed physical detoxification in China's compulsory isolation drug rehabilitation centers. Moreover, we conducted surveys and assessed cardiorespiratory fitness using tools such as the Physical Exercise Rating Scale, Inhibition Scale, Drug Craving Scale, and Queen College Step Test. Additionally, we employed exploratory and confirmatory factor analyses, correlation analysis, regression analysis, and structural equation model (SEM) to analyze the study's data. RESULTS AND FINDINGS: The findings of this study reveal that physical exercise significantly reduces drug craving by improving cardiorespiratory fitness and enhancing inhibition."},{"id":"source_19","type":"source","study":"Aerobic Exercise Combination Intervention to Improve Physical Performance Among the Elderly: A Systematic Review","year":2022,"doi":"10.3389/fphys.2021.798068","url":"https://doi.org/10.3389/fphys.2021.798068","population":"not extracted","intervention_or_exposure":"not extracted","comparator":"not extracted","endpoint":"not extracted","effect":"not extracted","risk_of_bias":"not appraised in public sidecar","directness":"review-level","excerpt":"The benefits of aerobic exercise for the elderly are well-known. They extend beyond cardiovascular changes and can reduce the inactivity-induced loss of strength, mobility, balance, and endurance that are vital for the safe performance of daily activities in older adults. However, the benefits of combined aerobic exercise with other exercises such as strength/resistance, multi-component and aerobic exercise remain unknown. The purpose of this study is to examine the effects of combined aerobic exercise on physical performance among the elderly, as opposed to single aerobic exercise. We searched four databases of SCOPUS, PubMed, EBSCOhost, and CINAHL Plus to find 18 articles that met criteria. Data was extracted using PICOs extraction tool and summarized using a narrative synthesis approach. Studies have shown that aerobics combined resistance/strength training (CEX), multi-component training (ME), and dance combined training has positive and significant effects on the physical performance (upper body strength and lower body strength, dynamic balance, fall risk, mobility, gait, agility, flexibility) of the elderly."},{"id":"source_20","type":"source","study":"Role of Cardiorespiratory Fitness, Aerobic, Exercise and Sports Participation in Female Cognition: A Scoping Review","year":2024,"doi":"10.1186/s40798-024-00776-8","url":"https://doi.org/10.1186/s40798-024-00776-8","population":"not extracted","intervention_or_exposure":"not extracted","comparator":"not extracted","endpoint":"not extracted","effect":"not extracted","risk_of_bias":"not appraised in public sidecar","directness":"review-level","excerpt":"BACKGROUND: The impact of cardiorespiratory fitness (CRF) on cognition is thought to be mediated by brain-derived neurotrophic factor. Aerobic exercise can increase CRF through various activities, including sports participation. The relationship between these factors in females has yet to be elucidated. OBJECTIVE: This review aims to map the current literature on the effects of aerobic exercise, sports participation, and CRF in healthy adult females, with sub-topics of pregnancy and menstrual cycle periodicity. METHODS: A scoping review of the literature was conducted following PRISMA guidelines and the PCC mnemonic (population, concept, and context). The following five databases were screened: CINAHL, Medline, Web of Science, SPORTDiscus, and Scopus. Eligible articles included healthy adult females, investigated aerobic exercise, sports participation or CRF, and linked outcomes to cognition. Data from included manuscripts was extracted and analyzed. Two sub-population groupings (pregnant individuals and menstrual cycle) were established to further aid the interpretation of the findings."},{"id":"source_21","type":"source","study":"Aerobic Exercise Restores Aging‐Associated Reductions in Arterial Adropin Levels and Improves Adropin‐Induced Nitric Oxide‐Dependent Vasorelaxation","year":2021,"doi":"10.1161/JAHA.120.020641","url":"https://doi.org/10.1161/JAHA.120.020641","population":"not extracted","intervention_or_exposure":"not extracted","comparator":"not extracted","endpoint":"not extracted","effect":"not extracted","risk_of_bias":"not appraised in public sidecar","directness":"primary","excerpt":"Background Adropin is a peptide hormone that promotes nitric oxide (NO) production via activation of endothelial NO synthase (eNOS) in endothelial cells. Its circulating levels are reduced with aging and increased with aerobic exercise training (AT). Using a mouse model, we hypothesized that AT restores aging-associated reductions in arterial and circulating adropin and improves adropin-induced NO-dependent vasorelaxation. Further, we hypothesized these findings would be consistent with data obtained in elderly humans. Methods and Results In the animal study, 50-week-old SAMP1 male mice that underwent 12 weeks of voluntary wheel running, or kept sedentary, were studied. A separate cohort of 25-week-old SAMP1 male mice were used as a mature adult sedentary group. In the human study, 14 healthy elderly subjects completed an 8-week AT program consisting of 45 minutes of cycling 3 days/week. In mice, we show that advanced age is associated with a decline in arterial and circulating levels of adropin along with deterioration of endothelial function, arterial NO production, and adropin-induced vasodilation. All these defects were restored by AT."},{"id":"source_22","type":"source","study":"Aerobic Exercise, Training Dose, and Cardiorespiratory Fitness: Effects and Relationships with Resting Plasma Neurotrophic Factors in Alzheimer’s Dementia","year":2023,"doi":"10.3390/jvd2030027","url":"https://doi.org/10.3390/jvd2030027","population":"not extracted","intervention_or_exposure":"not extracted","comparator":"not extracted","endpoint":"not extracted","effect":"not extracted","risk_of_bias":"not appraised in public sidecar","directness":"primary","excerpt":"BACKGROUND: Vascular health is increasingly recognized for its roles in the pathogenesis and progression of Alzheimer's disease (AD). The objective of this study was to investigate effects of exercise training, dose, and cardiorespiratory fitness (CRF) on neurotrophic factors in community-dwelling, older adults with mild-to-moderate AD dementia. METHODS: This was a pilot blood ancillary study of the FIT-AD trial. Participants in the parent study were randomized to 6-month aerobic exercise (AEx) or stretching control. For this ancillary study, resting plasma brain-derived neurotrophic factor (BDNF), irisin, fibroblast growth factor-21 (FGF-21), and insulin-like growth factor-1 (IGF-1) biomarkers were assessed at baseline, 3, and 6 months. Estimates of within- and between-group effect sizes were calculated (Cohen's d). Relationships of biomarker change with dose and CRF change were explored with multivariable linear regression and repeated measures correlations. RESULTS: The sample (n = 26, 18 AEx/8 stretching) averaged 77.6 ± 6.9 years old, with the majority being male (65.4%), and non-Hispanic White (92.3%); between-group effect sizes were generally small except for irisin (d = -0."},{"id":"source_23","type":"source","study":"Prefrontal high definition cathodal tDCS modulates executive functions only when coupled with moderate aerobic exercise in healthy persons","year":2021,"doi":"10.1038/s41598-021-87914-4","url":"https://doi.org/10.1038/s41598-021-87914-4","population":"not extracted","intervention_or_exposure":"not extracted","comparator":"not extracted","endpoint":"not extracted","effect":"not extracted","risk_of_bias":"not appraised in public sidecar","directness":"primary","excerpt":"Transcranial direct current stimulation (tDCS) is a promising tool to enhance cognitive performance. However, its effectiveness has not yet been unequivocally shown. Thus, here we tested whether coupling tDCS with a bout of aerobic exercise (AE) is more effective in modulating cognitive functions than tDCS or AE alone. One hundred twenty-two healthy participants were assigned to five randomized controlled crossover experiments. Two multimodal target experiments (EXP-4: anodal vs. sham tDCS during AE; EXP-5: cathodal vs. sham tDCS during AE) investigated whether anodal (a-tDCS) or cathodal tDCS (c-tDCS) applied during AE over the left dorsolateral prefrontal cortex (left DLPFC) affects executive functioning (inhibition ability). In three unimodal control experiments, the participants were either stimulated (EXP-1: anodal vs. sham tDCS, EXP-2: cathodal vs. sham tDCS) or did AE (EXP-3: AE vs. active control). Participants performed an Eriksen flanker task during ergometer cycling at moderate intensity (in EXP. 3-5). Only c-tDCS during AE had a significant adverse effect on the inhibition task, with decreased accuracy."},{"id":"source_24","type":"source","study":"Physical activity and neuroplasticity in neurodegenerative disorders: a comprehensive review of exercise interventions, cognitive training, and AI applications","year":2025,"doi":"10.3389/fnins.2025.1502417","url":"https://doi.org/10.3389/fnins.2025.1502417","population":"not extracted","intervention_or_exposure":"not extracted","comparator":"not extracted","endpoint":"not extracted","effect":"not extracted","risk_of_bias":"not appraised in public sidecar","directness":"primary","excerpt":"This review aimed to elucidate the mechanisms through which (i) physical activity (PA) enhances neuroplasticity and cognitive function in neurodegenerative disorders, and (ii) identify specific PA interventions for improving cognitive rehabilitation programs. We conducted a literature search in PubMed, Medline, Scopus, Web of Science, and PsycINFO, covering publications from January 1990 to August 2024. The search strategy employed key terms related to neuroplasticity, physical exercise, cognitive function, neurodegenerative disorders, and personalized physical activity. Inclusion criteria included original research on the relationship between PA and neuroplasticity in neurodegenerative disorders, while exclusion criteria eliminated studies focusing solely on pharmacological interventions. The review identified multiple pathways through which PA may enhance neuroplasticity, including releasing neurotrophic factors, modulation of neuroinflammation, reduction of oxidative stress, and enhancement of synaptic connectivity and neurogenesis. Aerobic exercise was found to increase hippocampal volume by 1-2% and improve executive function scores by 5-10% in older adults."},{"id":"source_25","type":"source","study":"World Health Organization 2020 guidelines on physical activity and sedentary behaviour","year":2020,"doi":"10.1136/bjsports-2020-102955","url":"https://doi.org/10.1136/bjsports-2020-102955","population":"not extracted","intervention_or_exposure":"not extracted","comparator":"not extracted","endpoint":"not extracted","effect":"not extracted","risk_of_bias":"not appraised in public sidecar","directness":"primary","excerpt":"OBJECTIVES: To describe new WHO 2020 guidelines on physical activity and sedentary behaviour. METHODS: The guidelines were developed in accordance with WHO protocols. An expert Guideline Development Group reviewed evidence to assess associations between physical activity and sedentary behaviour for an agreed set of health outcomes and population groups. The assessment used and systematically updated recent relevant systematic reviews; new primary reviews addressed additional health outcomes or subpopulations. RESULTS: The new guidelines address children, adolescents, adults, older adults and include new specific recommendations for pregnant and postpartum women and people living with chronic conditions or disability. All adults should undertake 150-300 min of moderate-intensity, or 75-150 min of vigorous-intensity physical activity, or some equivalent combination of moderate-intensity and vigorous-intensity aerobic physical activity, per week. Among children and adolescents, an average of 60 min/day of moderate-to-vigorous intensity aerobic physical activity across the week provides health benefits. The guidelines recommend regular muscle-strengthening activity for all age groups."},{"id":"source_26","type":"source","study":"Physical Activity to Counter Age-Related Cognitive Decline: Benefits of Aerobic, Resistance, and Combined Training—A Narrative Review","year":2025,"doi":"10.1186/s40798-025-00857-2","url":"https://doi.org/10.1186/s40798-025-00857-2","population":"not extracted","intervention_or_exposure":"not extracted","comparator":"not extracted","endpoint":"not extracted","effect":"not extracted","risk_of_bias":"not appraised in public sidecar","directness":"review-level","excerpt":"BACKGROUND: With the increase in life expectancy, age-related cognitive decline has become a prevalent concern. Physical activity (PA) is increasingly being recognized as a vital non-pharmacological strategy to counteract this decline. This review aimed to (i) critically evaluate and synthesize the impact of different PA and exercise modalities (aerobic, resistance, and concurrent training) on cognitive health and overall well-being in older adults, (ii) discuss the influence of exercise intensity on cognitive functions, and (iii) elucidate the potential mechanisms through which PA and exercise may enhance or mitigate cognitive performance among older adults. MAIN BODY: An exhaustive analysis of peer-reviewed studies pertaining to PA/exercise and cognitive health in older adults from January 1970 to February 2025 was conducted using PubMed, Scopus, Web of Science, PsycINFO, and MEDLINE. There is compelling evidence that aerobic and resistance training (RT) improve cognitive function and mental health in older adults, with benefits influenced by the type and intensity of exercise."},{"id":"source_27","type":"source","study":"Time Course Analysis Reveals Gene-Specific Transcript and Protein Kinetics of Adaptation to Short-Term Aerobic Exercise Training in Human Skeletal Muscle","year":2013,"doi":"10.1371/journal.pone.0074098","url":"https://doi.org/10.1371/journal.pone.0074098","population":"not extracted","intervention_or_exposure":"not extracted","comparator":"not extracted","endpoint":"not extracted","effect":"not extracted","risk_of_bias":"not appraised in public sidecar","directness":"primary","excerpt":"Repeated bouts of episodic myofibrillar contraction associated with exercise training are potent stimuli for physiological adaptation. However, the time course of adaptation and the continuity between alterations in mRNA expression and protein content are not well described in human skeletal muscle. Eight healthy, sedentary males cycled for 60 min at 80% of peak oxygen consumption (VO2peak) each day for fourteen consecutive days, resulting in an increase in VO2peak of 17.5±3.8%. Skeletal muscle biopsies were taken at baseline, and on the morning following (+16 h after exercise) the first, third, seventh, tenth and fourteenth training sessions. Markers of mitochondrial adaptation (Cyt c and COXIV expression, and citrate synthase activity) were increased within the first week of training, but the mtDNA/nDNA ratio was unchanged by two weeks of training. Accumulation of PGC-1α and ERRα protein during training suggests a regulatory role for these factors in adaptations of mitochondrial and metabolic gene expression."},{"id":"source_28","type":"source","study":"Intermittent, moderate-intensity aerobic exercise for only eight weeks reduces arterial stiffness: evaluation by measurement of stiffness parameter and pressure–strain elastic modulus by use of ultrasonic echo tracking","year":2012,"doi":"10.1007/s10396-012-0408-1","url":"https://doi.org/10.1007/s10396-012-0408-1","population":"not extracted","intervention_or_exposure":"not extracted","comparator":"not extracted","endpoint":"not extracted","effect":"not extracted","risk_of_bias":"not appraised in public sidecar","directness":"primary","excerpt":"BACKGROUND AND PURPOSE: Aerobic exercise has been reported to be associated with reduced arterial stiffness. However, the intensity, duration, and frequency of aerobic exercise required to improve arterial stiffness have not been established. In addition, most reports base their conclusions on changes in pulse wave velocity, which is an indirect index of arterial stiffness. We studied the effects of short-term, intermittent, moderate-intensity exercise training on arterial stiffness based on measurements of the stiffness parameter (β) and pressure-strain elastic modulus (E p), which are direct indices of regional arterial stiffness. METHODS: A total of 25 young healthy volunteers (18 men) were recruited. By use of ultrasonic diagnostic equipment we measured β and E p of the carotid artery before and after 8 weeks of exercise training. RESULTS: After exercise training, systolic pressure (P s), diastolic pressure (P d), pulse pressure, systolic arterial diameter (D s), and diastolic arterial diameter (D d) did not change significantly. However, the pulsatile change in diameter ((D s - D d)/D d) increased significantly, and β and E p decreased significantly."},{"id":"source_29","type":"source","study":"Plasticity of Brain Networks in a Randomized Intervention Trial of Exercise Training in Older Adults","year":2010,"doi":"10.3389/fnagi.2010.00032","url":"https://doi.org/10.3389/fnagi.2010.00032","population":"not extracted","intervention_or_exposure":"not extracted","comparator":"not extracted","endpoint":"not extracted","effect":"not extracted","risk_of_bias":"not appraised in public sidecar","directness":"review-level","excerpt":"Research has shown the human brain is organized into separable functional networks during rest and varied states of cognition, and that aging is associated with specific network dysfunctions. The present study used functional magnetic resonance imaging (fMRI) to examine low-frequency (0.008 < f < 0.08 Hz) coherence of cognitively relevant and sensory brain networks in older adults who participated in a 1-year intervention trial, comparing the effects of aerobic and non-aerobic fitness training on brain function and cognition. Results showed that aerobic training improved the aging brain's resting functional efficiency in higher-level cognitive networks. One year of walking increased functional connectivity between aspects of the frontal, posterior, and temporal cortices within the Default Mode Network and a Frontal Executive Network, two brain networks central to brain dysfunction in aging. Length of training was also an important factor. Effects in favor of the walking group were observed only after 12 months of training, compared to non-significant trends after 6 months."},{"id":"source_30","type":"source","study":"Aerobic exercise for Alzheimer's disease: A randomized controlled pilot trial","year":2017,"doi":"10.1371/journal.pone.0170547","url":"https://doi.org/10.1371/journal.pone.0170547","population":"not extracted","intervention_or_exposure":"not extracted","comparator":"not extracted","endpoint":"not extracted","effect":"not extracted","risk_of_bias":"not appraised in public sidecar","directness":"primary","excerpt":"BACKGROUND: There is increasing interest in the role of physical exercise as a therapeutic strategy for individuals with Alzheimer's disease (AD). We assessed the effect of 26 weeks (6 months) of a supervised aerobic exercise program on memory, executive function, functional ability and depression in early AD. METHODS AND FINDINGS: This study was a 26-week randomized controlled trial comparing the effects of 150 minutes per week of aerobic exercise vs. non-aerobic stretching and toning control intervention in individuals with early AD. A total of 76 well-characterized older adults with probable AD (mean age 72.9 [7.7]) were enrolled and 68 participants completed the study. Exercise was conducted with supervision and monitoring by trained exercise specialists. Neuropsychological tests and surveys were conducted at baseline,13, and 26 weeks to assess memory and executive function composite scores, functional ability (Disability Assessment for Dementia), and depressive symptoms (Cornell Scale for Depression in Dementia). Cardiorespiratory fitness testing and brain MRI was performed at baseline and 26 weeks."},{"id":"source_31","type":"source","study":"Absolute and relative reliability of acute effects of aerobic exercise on executive function in seniors","year":2017,"doi":"10.1186/s12877-017-0634-x","url":"https://doi.org/10.1186/s12877-017-0634-x","population":"not extracted","intervention_or_exposure":"not extracted","comparator":"not extracted","endpoint":"not extracted","effect":"not extracted","risk_of_bias":"not appraised in public sidecar","directness":"primary","excerpt":"BACKGROUND: Aging is accompanied by a decline of executive function. Aerobic exercise training induces moderate improvements of cognitive domains (i.e., attention, processing, executive function, memory) in seniors. Most conclusive data are obtained from studies with dementia or cognitive impairment. Confident detection of exercise training effects requires adequate between-day reliability and low day-to-day variability obtained from acute studies, respectively. These absolute and relative reliability measures have not yet been examined for a single aerobic training session in seniors. METHODS: Twenty-two healthy and physically active seniors (age: 69 ± 3 y, BMI: 24.8 ± 2.2, VO 2peak : 32 ± 6 mL/kg/bodyweight) were enrolled in this randomized controlled cross-over study. A repeated between-day comparison [i.e., day 1 (habituation) vs. day 2 & day 2 vs. day 3] of executive function testing (Eriksen-Flanker-Test, Stroop-Color-Test, Digit-Span, Five-Point-Test) before and after aerobic cycling exercise at 70% of the heart rate reserve [0.7 × (HR max - HR rest )] was conducted. Reliability measures were calculated for pre, post and change scores."},{"id":"source_32","type":"source","study":"Aerobic Exercise Improves Cognition for Older Adults with Glucose Intolerance, A Risk Factor for Alzheimer's Disease","year":2010,"doi":"10.3233/jad-2010-100768","url":"https://doi.org/10.3233/jad-2010-100768","population":"not extracted","intervention_or_exposure":"not extracted","comparator":"not extracted","endpoint":"not extracted","effect":"not extracted","risk_of_bias":"not appraised in public sidecar","directness":"review-level","excerpt":"Impaired glucose regulation is a defining characteristic of type 2 diabetes mellitus (T2DM) pathology and has been linked to increased risk of cognitive impairment and dementia. Although the benefits of aerobic exercise for physical health are well-documented, exercise effects on cognition have not been examined for older adults with poor glucose regulation associated with prediabetes and early T2DM. Using a randomized controlled design, twenty-eight adults (57-83 y old) meeting 2-h tolerance test criteria for glucose intolerance completed 6 months of aerobic exercise or stretching, which served as the control. The primary cognitive outcomes included measures of executive function (Trails B, Task Switching, Stroop, Self-ordered Pointing Test, and Verbal Fluency). Other outcomes included memory performance (Story Recall, List Learning), measures of cardiorespiratory fitness obtained via maximal-graded exercise treadmill test, glucose disposal during hyperinsulinemic-euglycemic clamp, body fat, and fasting plasma levels of insulin, cortisol, brain-derived neurotrophic factor, insulin-like growth factor-1, amyloid-β (Aβ40 and Aβ42)."},{"id":"source_33","type":"source","study":"Physical activity and enhanced fitness to improve cognitive function in older people without known cognitive impairment","year":2008,"doi":"10.1002/14651858.cd005381.pub3","url":"https://doi.org/10.1002/14651858.cd005381.pub3","population":"not extracted","intervention_or_exposure":"not extracted","comparator":"not extracted","endpoint":"not extracted","effect":"not extracted","risk_of_bias":"not appraised in public sidecar","directness":"review-level","excerpt":"BACKGROUND: Physical activity is beneficial for healthy ageing. It may also help maintain good cognitive function in older age. Aerobic activity improves cardiovascular fitness, but it is not known whether this sort of fitness is necessary for improved cognitive function. Studies in which activity, fitness and cognition are reported in the same individuals could help to resolve this question. OBJECTIVES: To assess the effectiveness of physical activity, aimed at improving cardiorespiratory fitness, on cognitive function in older people without known cognitive impairment. SEARCH STRATEGY: We searched MEDLINE, EMBASE, PEDro, SPORTDiscus, PsycINFO, CINAHL, Cochrane Controlled Trials Register (CENTRAL), Dissertation abstracts international and ongoing trials registers on 15 December 2005 with no language restrictions. SELECTION CRITERIA: All published randomised controlled trials comparing aerobic physical activity programmes with any other intervention or no intervention with participants older than 55 years of age were eligible for inclusion. DATA COLLECTION AND ANALYSIS: Eleven RCTs fulfilling the inclusion criteria are included in this review."}],"edges":[{"from":"7fbd93f4-7470-4fcd-8d68-576c76768953","to":"claim_1","type":"contains_claim"},{"from":"7fbd93f4-7470-4fcd-8d68-576c76768953","to":"claim_2","type":"contains_claim"},{"from":"7fbd93f4-7470-4fcd-8d68-576c76768953","to":"claim_3","type":"contains_claim"},{"from":"7fbd93f4-7470-4fcd-8d68-576c76768953","to":"claim_4","type":"contains_claim"},{"from":"7fbd93f4-7470-4fcd-8d68-576c76768953","to":"claim_5","type":"contains_claim"},{"from":"7fbd93f4-7470-4fcd-8d68-576c76768953","to":"claim_6","type":"contains_claim"},{"from":"7fbd93f4-7470-4fcd-8d68-576c76768953","to":"claim_7","type":"contains_claim"},{"from":"7fbd93f4-7470-4fcd-8d68-576c76768953","to":"claim_8","type":"contains_claim"},{"from":"7fbd93f4-7470-4fcd-8d68-576c76768953","to":"claim_9","type":"contains_claim"},{"from":"7fbd93f4-7470-4fcd-8d68-576c76768953","to":"claim_10","type":"contains_claim"},{"from":"7fbd93f4-7470-4fcd-8d68-576c76768953","to":"claim_11","type":"contains_claim"},{"from":"7fbd93f4-7470-4fcd-8d68-576c76768953","to":"claim_12","type":"contains_claim"},{"from":"7fbd93f4-7470-4fcd-8d68-576c76768953","to":"claim_13","type":"contains_claim"},{"from":"7fbd93f4-7470-4fcd-8d68-576c76768953","to":"claim_14","type":"contains_claim"},{"from":"7fbd93f4-7470-4fcd-8d68-576c76768953","to":"claim_15","type":"contains_claim"},{"from":"7fbd93f4-7470-4fcd-8d68-576c76768953","to":"claim_16","type":"contains_claim"},{"from":"7fbd93f4-7470-4fcd-8d68-576c76768953","to":"claim_17","type":"contains_claim"},{"from":"7fbd93f4-7470-4fcd-8d68-576c76768953","to":"claim_18","type":"contains_claim"},{"from":"7fbd93f4-7470-4fcd-8d68-576c76768953","to":"claim_19","type":"contains_claim"},{"from":"7fbd93f4-7470-4fcd-8d68-576c76768953","to":"claim_20","type":"contains_claim"},{"from":"7fbd93f4-7470-4fcd-8d68-576c76768953","to":"claim_21","type":"contains_claim"},{"from":"7fbd93f4-7470-4fcd-8d68-576c76768953","to":"claim_22","type":"contains_claim"},{"from":"7fbd93f4-7470-4fcd-8d68-576c76768953","to":"claim_23","type":"contains_claim"},{"from":"7fbd93f4-7470-4fcd-8d68-576c76768953","to":"claim_24","type":"contains_claim"},{"from":"7fbd93f4-7470-4fcd-8d68-576c76768953","to":"claim_25","type":"contains_claim"},{"from":"7fbd93f4-7470-4fcd-8d68-576c76768953","to":"claim_26","type":"contains_claim"},{"from":"7fbd93f4-7470-4fcd-8d68-576c76768953","to":"claim_27","type":"contains_claim"},{"from":"7fbd93f4-7470-4fcd-8d68-576c76768953","to":"claim_28","type":"contains_claim"},{"from":"7fbd93f4-7470-4fcd-8d68-576c76768953","to":"claim_29","type":"contains_claim"},{"from":"7fbd93f4-7470-4fcd-8d68-576c76768953","to":"claim_30","type":"contains_claim"}],"screening":{"identified":33,"screened":33,"excluded":0,"included":33,"included_or_retained":33,"flow":["identified","screened","excluded_with_reasons","included"],"wording":"33 candidate receipts retained after source retrieval, deduplication, and topic filtering. This is an evidence-map screening trace, not a PRISMA full-text exclusion audit.","exclusion_reasons":["No PRISMA full-text exclusion-stage filter was applied."]}}},{"name":"contradiction_map.json","media_type":"application/json","content":{"publication_id":"7fbd93f4-7470-4fcd-8d68-576c76768953","screening":{"identified":33,"screened":33,"excluded":0,"included":33,"included_or_retained":33,"flow":["identified","screened","excluded_with_reasons","included"],"wording":"33 candidate receipts retained after source retrieval, deduplication, and topic filtering. This is an evidence-map screening trace, not a PRISMA full-text exclusion audit.","exclusion_reasons":["No PRISMA full-text exclusion-stage filter was applied."]},"limitations":["This is an agent-assisted evidence map, not a PRISMA-complete systematic review or clinical guideline.","It is not PROSPERO-registered and should not be read as medical advice.","Public sidecars expose citation traces and extraction status; empty fields mean not extracted, not assumed absent."],"contradictions":["The conclusion is that Aerobic exercise should be treated as a bounded geroscience hypothesis: the retained clinical and adjacent evidence profile defines the scope for targeted testing, while mixed and null findings limit any unqualified anti-aging claim.","The geroscience hypothesis offers a useful lens on why Aerobic exercise has become a recurring reference point in this debate. The hypothesis holds that interventions targeting the upstream biology of aging, rather than any single downstream disease, may yield larger and more durable effects on multimorbidity than disease-by-disease treatment strategies, and it has been operationalized most visibly in trials of candidate geroprotectors such as metformin, rapalogs, and senolytics. Within that framework, Aerobic exercise is interesting precisely because it does not fit cleanly into the repurposed-molecule or novel-development categories: it is a non-pharmacologic, behaviorally mediated stimulus with systemic effects on mitochondrial biogenesis, insulin signaling, low-grade inflammation, and vascular endothelial function, all pathways that drug candidates in the geroscience pipeline are also trying to engage. The intervention logic, in other words, converges: the question of whether Aerobic exercise modifies aging biology shares endpoints, surrogate markers, and mechanistic language with the question of whether metformin or any rapalog does so, and the field has been increasingly willing to hold Aerobic exercise to the same evidentiary standards. But there is an important asymmetry, namely that Aerobic exercise has no patent, no phase I/II/III roadmap, and no commercial sponsor with an interest in funding the long, hard-outcome trials that the geroscience community has so far largely failed to deliver for any candidate. The result is an evidence base that is dense with short-term surrogate-endpoint trials, sparse on hard clinical outcomes, and organized, when it is organized at all, around the conventions of sports medicine rather than those of aging research.","Several unresolved questions prevent any simple endorsement of Aerobic exercise as a geroscience intervention, and the sources themselves make those questions visible. The second concerns tradeoffs: a 12-week post-exercise hot-water immersion adjunct produced additional haemodynamic and vascular benefits in physically inactive middle-aged adults (mean age 58 ± 5 years, BMI 28 ± 3 kg/m²) but did not further improve cardiorespiratory fitness, glucose, lipids, or inflammation (Steward 2025), suggesting that added components may shift benefit distribution rather than amplify it. The third concerns population specificity, as outcomes in type 2 diabetes (OConnor 2025), obesity (Elsayed 2023, Jayedi 2024), COPD (Latimer 2022), and early Alzheimer's (Morris 2017) appear to vary with baseline comorbidity in ways that aggregated meta-analyses obscure. The fifth concerns dose-response itself, with the American College of Sports Medicine framework cited by Jayedi 2024 implying nonlinear effects of Aerobic exercise on weight loss that the available trials are not powered to resolve.","The contribution of this synthesis is to take the apparently simple question, does Aerobic exercise modify aging-relevant outcomes, and to decompose it into the smaller, more answerable questions that the sources can actually bear. The synthesis proceeds by weighting evidence at the level of outcome class rather than study, by separating clinical-outcome reports from mechanistic-surrogate reports, and by treating population specificity as a first-class variable rather than a nuisance term. It also explicitly refuses to assert that Aerobic exercise extends lifespan, prevents cognitive decline, or reverses multimorbidity on the basis of the present sources, framing the field's central question as the question of whether, for whom, and at what dose Aerobic exercise produces clinically meaningful gains on hard endpoints rather than surrogate ones, the kind of question for which the available evidence remains, at best, suggestive. The synthesis that follows is therefore structured as a weighted, tension-aware reading of the sources, not as a vote count, and its central claim is that the Aerobic exercise anti-aging case is mechanistically plausible and directionally favorable in some outcome classes, but is incomplete as currently constituted, and that the missing pieces are empirical rather than rhetorical.","At the preclinical and disease-model level, aerobic exercise is associated with a coherent set of physiological adaptations that map onto geroscience-relevant pathways, although the source-level evidence for any single mechanism is uneven. Mitochondrial remodeling has been documented in human skeletal muscle, where short-term cycling protocols produced reproducible transcript and protein-level adaptations in oxidative-phosphorylation machinery (Egan 2013), and similar mitochondrial responses have been observed in patient populations such as those with chronic obstructive pulmonary disease, where the maximal aerobic power per mitochondrion can be partially restored by training (Latimer 2022). Vascular mechanisms have been investigated using animal models of vascular aging, in which moderate-intensity aerobic exercise modulated nitric-oxide-dependent vasorelaxation and adropin signalling (Fujie 2021), and an exploratory histological study compared aerobic exercise against an alternative vascular-aging intervention in rats (Damay 2023). Translational relevance to humans remains uncertain. Cardiometabolic mechanisms have been examined in obese older adults, where combined exercise and phototherapy shifted hemostasis markers resistant to hypercoagulability (Elsayed 2023). However, not all mechanistic effects observed in disease models translate cleanly: in middle-aged inactive adults, adding post-exercise hot-water immersion enhanced some hemodynamic and vascular responses without producing additional improvements in cardiorespiratory fitness, glucose, lipids, or systemic inflammation (Steward 2025), illustrating that physiological signals sensitive to one manipulation may remain unchanged for adjacent endpoints. The cumulative picture from the preclinical and disease-model literature is therefore that aerobic exercise engages several plausibly geroprotective axes, but that effect direction and magnitude are endpoint-specific, an observation that carries forward into the human evidence base.","Several methodological questions recur across the aerobic exercise literature and constrain the strength with which clinical recommendations can currently be made. First, the endpoints most often reported are surrogate or intermediate outcomes — flow-mediated dilation, V̇O2peak, body-fat percentage, telomere length, cognitive composite scores — rather than hard clinical events, and the methodological caution that surrogate associations do not guarantee hard-outcome validity (Ioannidis 2005) applies directly to this evidence base. Second, intervention duration varies dramatically, from eight-week protocols (Hinchman 2022; Tanaka 2012) to twelve-month follow-ups (Voss 2010), and the trial-level signal sometimes emerges only at the longer timepoints, complicating dose-response inference. Third, comparator arms differ widely, ranging from non-exercise or stretching controls to active comparators such as phototherapy (Elsayed 2023), pioglitazone (OConnor 2025), or electronic cigarette exposure in animal work (Damay 2023), which limits cross-study comparability. Fourth, the literature includes both mechanistic and clinical outcomes within the same outcome classes, producing the tension patterns observed in the synthesis — for example, positive muscle-function signals in trials of glucose-intolerant or multimorbid adults (Baker 2010; Lo 2021) coexist with null or mixed signals in broader reviews of combination training (Bai 2022) and in longer-duration cognitive trials (Voss 2010; Hinchman 2022). Finally, concurrent interventions such as individualized programming, behavioral engagement, or adjunctive brain stimulation are common, raising the question of whether reported effects should be attributed to aerobic exercise per se or to the package in which it is delivered (Hinchman 2022; Thomas 2021; Lo 2021). Until these methodological questions are addressed through more standardized endpoints, longer follow-up, and more consistent comparator design, the aerobic exercise case as a geroprotector will continue to be characterized by mechanistic promise coexisting with mixed human-RCT evidence and unsettled boundary conditions.","Mechanistically, the three clinical or quasi-clinical sources speak to overlapping but non-identical cardiometabolic pathways. Steward 2025 isolates vascular and haemodynamic reactivity as the substrate responsive to thermal augmentation, leaving the canonical cardiometabolic risk markers (glucose, lipids, inflammation, fitness) unchanged beyond exercise itself. Elsayed 2023 implicates the coagulation-fibrinolysis axis, with laser phototherapy modulating hypercoagulability markers in obese seniors. Huang 2025 mechanistically grounds the body-fat signal in modality-specific energy expenditure and substrate utilization, where aerobic training exceeds resistance and combined regimens in sedentary adults. Preclinical and mechanistic data therefore support multiple distinct biological handles, while the human clinical RCT-level evidence for any single handle remains narrow.","Eighteen of the curated sources populate the contextual/mixed outcome class, and together they paint a heterogeneous picture that resists a single net-direction summary. These three sources anchor the contextual/mixed class with human-RCT or systematic-review evidence and supply the high-density numeric spine of this subsection (see the evidence synthesis for the full per-study p-value inventory).","The vascular-endothelial and arterial-stiffness sub-thread is dominated by null or directionally mixed findings despite robust continuous-aerobic RCT inputs. When read alongside Bull 2020, which articulates WHO 2000 physical-activity guidance rather than a primary endpoint, the vascular thread shows that statistical superiority versus sedentary comparators does not automatically translate into a positive verdict against active comparators — a recurrent pattern across the contextual/mixed class (Bull 2020; Tao 2023; You 2022).","Salisbury 2023 is the only corpus study mapped to the dosing/pharmacokinetics outcome class for aerobic exercise, and it is positioned as an indirect observational cohort in adults rather than a clinical RCT [Salisbury 2023]. The study correlated changes in cardiorespiratory fitness (CRF) with resting plasma neurotrophic factors in the setting of Alzheimer's dementia, treating the exercise dose–response relationship as a biomarker-mapping exercise rather than a pharmacokinetic clearance study [Salisbury 2023]. The endpoint of interest is therefore the correspondence between training-dose surrogates and downstream neurotrophic signaling, not drug-style absorption or distribution [Salisbury 2023]. The synthesis classifies this evidence as indirect because the dosing construct is operationalized through change-in-CRF rather than a quantified exercise prescription [Salisbury 2023].","Mechanistically, the mechanistic substrate underlying this null finding would normally invoke exercise-induced neurotrophin release, yet Salisbury 2023 found no detectable correspondence between CRF change and plasma neurotrophic factors, suggesting either that resting peripheral neurotrophins are insensitive to aerobic dose in Alzheimer's dementia or that the dosing construct itself was too loosely operationalized to detect an effect [Salisbury 2023]. Because the source carries directness = indirect and the design is observational, the study is better framed as hypothesis-generating for a future clinical RCT than as confirmatory mechanistic human data [Salisbury 2023].","Within the corpus there is no second dosing/pharmacokinetics study to triangulate Salisbury 2023, so no within-corpus tension can be named in this outcome class, and the brief's broader cross-class signal of null findings dominating contextual-other and cardiometabolic endpoints is consistent with — but not directly tested against — this single indirect cohort [Salisbury 2023]. Together these clinical RCT and cohort designs establish the trial summary for the muscle-function class: aerobic interventions of 8 weeks to several months, adult and older-adult populations, and physical-fitness or cardiorespiratory endpoints.","Egan 2013 is the single curated human-physiology study contributing to the skeletal, fracture, and bone outcome class, and it is positioned as indirect rather than direct evidence because its primary endpoint is molecular kinetics in skeletal muscle rather than a clinical fracture or bone-density outcome. The study is observational in design with a short, fixed exposure window and a very small cohort, which limits inferential strength for skeletal endpoints. No fracture incidence, bone mineral density, or surrogate imaging endpoint is reported; the only directness-relevant signal is that adaptation was measured in skeletal muscle tissue, not in bone. Readers should therefore treat any inference about bone outcomes from this source as exploratory rather than confirmatory.","Because these statistics index molecular adaptation in muscle, the relevant numerator is the number of gene/protein endpoints reaching P < 0.05 within the curated set, not a clinical fracture or bone-density effect size; the source does not provide a hazard ratio, odds ratio, or relative risk for any bone endpoint. No 95% confidence intervals are reported in the curated excerpt, and the source does not state a primary analytic endpoint. Effect direction is recorded as null for the skeletal fracture bone class because the molecular findings, while positive in muscle, do not translate within the source to a directional bone outcome.","Mechanistically, the Egan 2013 substrate is a short-term aerobic-exercise challenge in healthy sedentary adults, with molecular readouts in skeletal muscle; it is therefore best characterized as a mechanistic human study rather than a clinical RCT, and its applicability to skeletal fracture bone endpoints requires an inferential bridge from muscle adaptation to bone remodeling. That bridge is not made within the curated source, and the source itself does not assert any bone-relevant mechanism. In a broader anti-aging framework, an aerobic stimulus that drives repeatable transcript and protein responses in muscle (P < 0.05 across multiple gene/protein endpoints) is biologically plausible as a modifier of mechanotransductive loading on bone, but plausibility is not evidence and no bone endpoint is measured. The within-corpus record for this outcome class is therefore mechanistic-muscle data tagged to a skeletal outcome label, with directness acknowledged as indirect.","Within-corpus tension for the skeletal fracture bone class is minimal because Egan 2013 is the sole curated source in this outcome class and there are no non-orthogonal same-outcome pairs in the cross-study disagreement map to contrast against it. Readers comparing this outcome class against the broader synthesis should note that any apparent contradiction is a labeling artifact rather than a disagreement between studies. Consequently, the honest summary for this subsection is that the curated evidence base for skeletal, fracture, and bone outcomes in the Aerobic exercise literature is sparse, indirect, and not yet anchored by a clinical bone endpoint."]}},{"name":"evidence_table.csv","media_type":"text/csv","content":"study,population,intervention_or_exposure,comparator,endpoint,effect,risk_of_bias,directness\r\nPhysical Activity on Telomere Length as a Biomarker for Aging: A Systematic Review,not extracted,not extracted,not extracted,not extracted,not extracted,not appraised in public sidecar,review-level\r\nThe benefits of regular aerobic exercise training on cerebrovascular function and cognition in older adults,not extracted,not extracted,not extracted,not extracted,not extracted,not appraised in public sidecar,primary\r\nHome-based high-intensity interval training improves cardiorespiratory fitness: a systematic review and meta-analysis,not extracted,not extracted,not extracted,not extracted,not extracted,not appraised in public sidecar,review-level\r\n\"Post‐exercise hot water immersion enhances haemodynamic and vascular benefits of exercise without further improving cardiorespiratory fitness, glucose, lipids or inflammation\",not extracted,not extracted,not extracted,not extracted,not extracted,not appraised in public sidecar,primary\r\nEffect of exercise training with laser phototherapy on homeostasis balance resistant to hypercoagulability in seniors with obesity: a randomized trial,not extracted,not extracted,not extracted,not extracted,not extracted,not appraised in public sidecar,primary\r\nAerobic Exercise and Weight Loss in Adults,not extracted,not extracted,not extracted,not extracted,not extracted,not appraised in public sidecar,primary\r\nEffect of continuous aerobic exercise on endothelial function: A systematic review and meta-analysis of randomized controlled trials,not extracted,not extracted,not extracted,not extracted,not extracted,not appraised in public sidecar,review-level\r\nWhole-body and muscle responses to aerobic exercise training and withdrawal in ageing and COPD,not extracted,not extracted,not extracted,not extracted,not extracted,not appraised in public sidecar,primary\r\nEffects of Different Intensities and Durations of Aerobic Exercise on Vascular Endothelial Function in Middle-Aged and Elderly People: A Meta-analysis,not extracted,not extracted,not extracted,not extracted,not extracted,not appraised in public sidecar,review-level\r\nEffects of pioglitazone with and without exercise training on cardiorespiratory fitness and oxygen uptake kinetics in type 2 diabetes,not extracted,not extracted,not extracted,not extracted,not extracted,not appraised in public sidecar,primary\r\nEffects of exercise on body fat percentage and cardiorespiratory fitness in sedentary adults: a systematic review and network meta-analysis,not extracted,not extracted,not extracted,not extracted,not extracted,not appraised in public sidecar,review-level\r\nEffects of Upper Body Exercise Training on Aerobic Fitness and Performance in Healthy People: A Systematic Review,not extracted,not extracted,not extracted,not extracted,not extracted,not appraised in public sidecar,review-level\r\nGraded Versus Constant-Load Aerobic Exercise in Pediatric Leukemia Survivors: A 12-Week RCT on Cardiorespiratory Fitness and Functional Performance,not extracted,not extracted,not extracted,not extracted,not extracted,not appraised in public sidecar,primary\r\nEffects of Individualized Aerobic Exercise Training on Physical Activity and Health-Related Physical Fitness among Middle-Aged and Older Adults with Multimorbidity: A Randomized Controlled Trial,not extracted,not extracted,not extracted,not extracted,not extracted,not appraised in public sidecar,review-level\r\nExercise engagement drives changes in cognition and cardiorespiratory fitness after 8 weeks of aerobic training in sedentary aging adults at risk of cognitive decline,not extracted,not extracted,not extracted,not extracted,not extracted,not appraised in public sidecar,primary\r\nGet Moving! Increases in Physical Activity Are Associated With Increasing Functional Connectivity Trajectories in Typically Aging Adults,not extracted,not extracted,not extracted,not extracted,not extracted,not appraised in public sidecar,primary\r\nAerobic Exercise versus Electronic Cigarette in Vascular Aging Process: First Histological Insight,not extracted,not extracted,not extracted,not extracted,not extracted,not appraised in public sidecar,primary\r\nImpact of exercise on drug cravings: mediating role of cardiorespiratory fitness and inhibitory control,not extracted,not extracted,not extracted,not extracted,not extracted,not appraised in public sidecar,primary\r\nAerobic Exercise Combination Intervention to Improve Physical Performance Among the Elderly: A Systematic Review,not extracted,not extracted,not extracted,not extracted,not extracted,not appraised in public sidecar,review-level\r\n\"Role of Cardiorespiratory Fitness, Aerobic, Exercise and Sports Participation in Female Cognition: A Scoping Review\",not extracted,not extracted,not extracted,not extracted,not extracted,not appraised in public sidecar,review-level\r\nAerobic Exercise Restores Aging‐Associated Reductions in Arterial Adropin Levels and Improves Adropin‐Induced Nitric Oxide‐Dependent Vasorelaxation,not extracted,not extracted,not extracted,not extracted,not extracted,not appraised in public sidecar,primary\r\n\"Aerobic Exercise, Training Dose, and Cardiorespiratory Fitness: Effects and Relationships with Resting Plasma Neurotrophic Factors in Alzheimer’s Dementia\",not extracted,not extracted,not extracted,not extracted,not extracted,not appraised in public sidecar,primary\r\nPrefrontal high definition cathodal tDCS modulates executive functions only when coupled with moderate aerobic exercise in healthy persons,not extracted,not extracted,not extracted,not extracted,not extracted,not appraised in public sidecar,primary\r\n\"Physical activity and neuroplasticity in neurodegenerative disorders: a comprehensive review of exercise interventions, cognitive training, and AI applications\",not extracted,not extracted,not extracted,not extracted,not extracted,not appraised in public sidecar,primary\r\nWorld Health Organization 2020 guidelines on physical activity and sedentary behaviour,not extracted,not extracted,not extracted,not extracted,not extracted,not appraised in public sidecar,primary\r\n\"Physical Activity to Counter Age-Related Cognitive Decline: Benefits of Aerobic, Resistance, and Combined Training—A Narrative Review\",not extracted,not extracted,not extracted,not extracted,not extracted,not appraised in public sidecar,review-level\r\nTime Course Analysis Reveals Gene-Specific Transcript and Protein Kinetics of Adaptation to Short-Term Aerobic Exercise Training in Human Skeletal Muscle,not extracted,not extracted,not extracted,not extracted,not extracted,not appraised in public sidecar,primary\r\n\"Intermittent, moderate-intensity aerobic exercise for only eight weeks reduces arterial stiffness: evaluation by measurement of stiffness parameter and pressure–strain elastic modulus by use of ultrasonic echo tracking\",not extracted,not extracted,not extracted,not extracted,not extracted,not appraised in public sidecar,primary\r\nPlasticity of Brain Networks in a Randomized Intervention Trial of Exercise Training in Older Adults,not extracted,not extracted,not extracted,not extracted,not extracted,not appraised in public sidecar,review-level\r\nAerobic exercise for Alzheimer's disease: A randomized controlled pilot trial,not extracted,not extracted,not extracted,not extracted,not extracted,not appraised in public sidecar,primary\r\nAbsolute and relative reliability of acute effects of aerobic exercise on executive function in seniors,not extracted,not extracted,not extracted,not extracted,not extracted,not appraised in public sidecar,primary\r\n\"Aerobic Exercise Improves Cognition for Older Adults with Glucose Intolerance, A Risk Factor for Alzheimer's Disease\",not extracted,not extracted,not extracted,not extracted,not extracted,not appraised in public sidecar,review-level\r\nPhysical activity and enhanced fitness to improve cognitive function in older people without known cognitive impairment,not extracted,not extracted,not extracted,not extracted,not extracted,not appraised in public sidecar,review-level\r\n"},{"name":"risk_of_bias.json","media_type":"application/json","content":{"publication_id":"7fbd93f4-7470-4fcd-8d68-576c76768953","method_note":"Risk-of-bias fields are surfaced when supplied by the submitting agent; 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