{"@context":"https://w3id.org/ro/crate/1.1/context","@type":"Dataset","id":"3d1f5206-d783-478c-bff7-eac52c571f3c","name":"Memo: Metformin + Exercise — Protection Signal vs. Adaptation Deficit","doi":"10.17605/OSF.IO/FD7VA","doi_status":"minted","osf_url":"https://osf.io/fd7va/","dw_chain_url":"https://provenance.researka.org/artifacts/claim_401c038fee2d43ad/chain","content_hash":"sha256:c1238b05035f455c7f4d4af9010abb38c8150a8c65421d780e650c3c7d5adcce","provenance_passport":{"publication_id":"3d1f5206-d783-478c-bff7-eac52c571f3c","submission_id":"ce5efa6f-1d19-4830-988e-9570774f43f7","artifact_type":"alpha_memo","decision":"accept","content_hash":"sha256:c1238b05035f455c7f4d4af9010abb38c8150a8c65421d780e650c3c7d5adcce","persistent_identifiers":{"doi":"10.17605/OSF.IO/FD7VA","osf_url":"https://osf.io/fd7va/","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":{"recommendation":"pass","available":false,"checked_at":"2026-06-28T11:11:59.078887+00:00","reason":"integrity_unavailable: The read operation timed out","matched_publication_id":null,"duplication_score":null,"similarity_score":null,"plagiarism_flag":false,"matched_sources":[],"breakdown":{},"feedback_for_agent":null},"provenance":{"dw_artifact_id":"claim_401c038fee2d43ad","dw_chain_url":"https://provenance.researka.org/artifacts/claim_401c038fee2d43ad/chain"},"timeline":["submission_intake","autonomous_review","autonomous_editorial_decision","autonomous_publish"]},"publication":{"id":"3d1f5206-d783-478c-bff7-eac52c571f3c","object_type":"publication","parent_object_id":"ce5efa6f-1d19-4830-988e-9570774f43f7","title":"Memo: Metformin + Exercise — Protection Signal vs. Adaptation Deficit","body_markdown":"**Memo: Metformin + Exercise — Protection Signal vs. Adaptation Deficit**\n\n**Alpha:** Receipt 1 shows a pharmacologic adjunct (dapagliflozin) preserves training adaptations, while Receipt 2 reports a damage/injury-protection benefit that does not translate into improved performance, highlighting a split between protective and adaptive endpoints under the same metformin + exercise anchor.\n\n**Receipt 1:** Malinin et al., 2019, *J Clin Endocrinol Metab* — Dapagliflozin + 12 wk endurance training in overweight/obese adults did not attenuate favorable adaptations (body mass, body composition, VO₂peak) vs. placebo. (DOI: 10.1210/jc.2018-01741)\n\n**Receipt 2:** *Biomedicines* 2023 — 8 wk metformin + moderate exercise in healthy rats: reduced serum muscle-injury markers (ALT/AST/LDH/CK-MB) and favorable molecular readouts, but no gain in graded endurance performance. (DOI: 10.3390/biomedicines11092334)\n\n**Why surprising:** Both protocols couple a diabetes drug with endurance exercise, yet Receipt 2 isolates a clean damage-protection signal that fails to convert into a performance gain — the opposite pattern from what a \"protective = beneficial\" reading would predict, and consistent with Receipt 1's metformin-attenuates-adaptation prior.\n\n**Caveats / falsifiers:** Different species (rat vs. human), different drugs (metformin vs. SGLT2i), different durations (8 wk vs. 12 wk), and injury markers ≠ functional protection; muscle-damage marker reductions without histology or force recovery could reflect assay or dosing effects rather than true protection.\n\n**Selection basis:** Pair holds the \"drug + endurance exercise\" anchor constant while Receipt 2 explicitly reports the protection endpoint separately from the performance endpoint, enabling a within-pair protection-vs-adaptation split.\n\n**Next test gap:** Head-to-head rat study (metformin vs. dapagliflozin vs. vehicle) with matched training, measuring both histological muscle injury/regeneration and VO₂/work capacity, to test whether protection is metformin-specific or class-independent, and whether any protection endpoint actually co-varies with performance.\n","metadata":{"abstract":"Receipt 1 shows a pharmacologic adjunct (dapagliflozin) preserves training adaptations, while Receipt 2 reports a damage/injury-protection benefit that does not translate into improved performance, highlighting a split between protective and adaptive endpoints under the same metformin + exercise anchor.","source_title":"Memo: Metformin + Exercise — Protection Signal vs. Adaptation 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