Key finding
Any resistance training vs none associated with 15% lower all-cause mortality (RR 0.85, 95% CI 0.77–0.93); dose-response peaked at ~60 min/week (27% reduction)
Evidence & causal status
Strong
Observational; supported by RCT evidence on intermediate outcomes
Caveats & limitations
Reliability / bias notes: Only 10 cohort studies pooled; self-reported exposure; nonlinear dose-response not fully resolved
This describes a population-level association from published research. It is not a prediction about any one individual, and association is not the same as causation unless stated otherwise above.