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categories: ["longevity"]categories: ["longevity"]tags: ["exercise", "cardiorespiratory fitness", "sarcopenia", "aging", "healthspan", "clinical trials"]tags: ["exercise", "cardiorespiratory fitness", "sarcopenia", "aging", "healthspan", "clinical trials"]summary: "Structured physical activity, the intervention with the strongest evidence for extending healthy life in humans and the benchmark any geroprotective drug must beat."summary: "Structured physical activity, the intervention with the strongest evidence for extending healthy life in humans and the benchmark any geroprotective drug must beat."updated: "2026-07-28"updated: "2026-10-29"humanEvidence: "A randomized trial in sedentary adults aged 70 to 89 lowered incident mobility disability, and large human cohorts link fitness to lower mortality; no trial has tested lifespan."humanEvidence: "A randomized trial in sedentary adults aged 70 to 89 lowered incident mobility disability, and large human cohorts link fitness to lower mortality; no trial has tested lifespan."access: "Freely available and close to costless: guideline-level activity requires no prescription, and adherence rather than price or supply is the binding constraint."access: "Freely available and close to costless: guideline-level activity requires no prescription, and adherence rather than price or supply is the binding constraint."reversibility: "reversible"reversibility: "reversible"lines 20–26 → 20–265 unchanged lines not shown
"caption": "Behavioural intervention", "caption": "Behavioural intervention", "rows": [ "rows": [ { "label": "Type", "value": "Aerobic, resistance, balance training" }, { "label": "Type", "value": "Aerobic, resistance, balance training" }, { "label": "Standard guideline", "value": "150–300 min moderate activity weekly" }, { "label": "Standard guideline", "value": "150-300 min moderate activity weekly" }, { "label": "Best-evidenced outcome", "value": "Reduced all-cause mortality" }, { "label": "Best-evidenced outcome", "value": "Reduced all-cause mortality" }, { "label": "Randomized functional evidence", "value": "Yes (mobility disability)" }, { "label": "Randomized functional evidence", "value": "Yes (mobility disability)" }, { "label": "Effect on maximum lifespan", "value": "Not demonstrated" }, { "label": "Effect on maximum lifespan", "value": "Not demonstrated" },lines 40–47 → 40–4713 unchanged lines not shown
```keyfacts```keyfacts[[ { "value": "3–4 yrs", "label": "Associated life expectancy gain", "note": "pooled cohort analysis of leisure-time activity at guideline levels; observational" }, { "value": "3-4 yrs", "label": "Associated life expectancy gain", "note": "pooled cohort analysis of leisure-time activity at guideline levels; observational" }, { "value": "No plateau", "label": "Fitness–mortality relationship", "note": "in a large treadmill-testing cohort, mortality kept falling with higher fitness" }, { "value": "No plateau", "label": "Fitness-mortality relationship", "note": "in a large treadmill-testing cohort, mortality kept falling with higher fitness" }, { "value": "~10%", "label": "Per-decade decline in VO2max", "note": "in sedentary adults, accelerating after 70" } { "value": "~10%", "label": "Per-decade decline in VO2max", "note": "in sedentary adults, accelerating after 70" }]]``````lines 97–103 → 97–10349 unchanged lines not shown
The rodent evidence is where the strong version of the claim weakens. Voluntary wheel running andThe rodent evidence is where the strong version of the claim weakens. Voluntary wheel running andforced treadmill protocols generally improve median survival in mice and rats while leaving maximumforced treadmill protocols generally improve median survival in mice and rats while leaving maximumlifespan largely unchanged. Under the standard interpretation, that pattern indicates a reduction inlifespan largely unchanged. Under the standard interpretation, that pattern indicates a reduction inextrinsic mortality and morbidity rather than a change in the rate of aging itself — the opposite ofextrinsic mortality and morbidity rather than a change in the rate of aging itself, the opposite ofwhat [[caloric-restriction]] does in the same animals. Exercise, on this reading, is an extraordinarywhat [[caloric-restriction]] does in the same animals. Exercise, on this reading, is an extraordinaryhealth intervention whose credentials as a *rate-of-aging* intervention are weaker than itshealth intervention whose credentials as a *rate-of-aging* intervention are weaker than itscredentials as a survival intervention.credentials as a survival intervention.lines 123–129 → 123–12919 unchanged lines not shown
speed, grip strength, and chair-stand time serve a similar role at lower cost and are the endpointsspeed, grip strength, and chair-stand time serve a similar role at lower cost and are the endpointsaround which competitions such as [[xprize-healthspan]] are built.around which competitions such as [[xprize-healthspan]] are built. This is a useful corrective to clock-based measurement. A training programme reliably improvesFunctional measures are also a check on clock-based ones. A training programme reliably improvesfunctional capacity while moving [[epigenetic-clock|methylation clock]] estimates little, whichfunctional capacity while moving [[epigenetic-clock|methylation clock]] estimates little, whichsuggests either that the clocks miss something important or thatsuggests either that the clocks miss something important or that[[biological-age|composite age scores]] and functional reserve are measuring different things.[[biological-age|composite age scores]] and functional reserve are measuring different things.lines 146–156 → 146–15516 unchanged lines not shown
prescriptions can be individualized by measurable response rather than by age. Whether theprescriptions can be individualized by measurable response rather than by age. Whether thecirculating factors released during exercise can be isolated and used in people who cannot train,circulating factors released during exercise can be isolated and used in people who cannot train,which is the population that would benefit most. And whether any pharmacological geroprotector, oncewhich is the population that would benefit most. And whether any pharmacological geroprotector, oncetested properly, adds to what training already provides — a question now most pressing for thetested properly, adds to what training already provides, a question now most pressing for the[[glp-1-receptor-agonists|incretin drugs]], whose weight loss includes the lean tissue that[[glp-1-receptor-agonists|incretin drugs]], whose weight loss includes the lean tissue thatresistance training preserves. Until one does, the honest position is thatresistance training preserves. Until one does, the most effective intervention against human agingthe most effective intervention against human aging is also the oldest, the cheapest, and the leastremains the oldest, the cheapest and the least commercially interesting.commercially interesting. ## See also## See also removed, struck through added, underlinedLine numbers count the serialised markdown of each revision, frontmatter included.
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