Full Breakdown
Optimal Strength Training Duration Linked to Lower Mortality, Study Finds
6/18/2026, 4:59:02 AM
Study Identifies 90–120 Minutes of Weekly Resistance Training as Mortality-Reducing Sweet Spot
The British Journal of Sports Medicine published an analysis of three U.S. cohort studies—the Health Professionals Follow-up Study, the Nurses’ Health Study, and the Nurses’ Health Study II. Researchers followed 147,374 adults (31,540 men, 115,834 women) aged 54 on average and free of major disease at baseline. Over up to 30 years, 35,798 participants died. Exercise was self-reported biennially, separating aerobic from resistance training.
Background & Context
Aerobic exercise is known to lower mortality, yet the independent and combined effects of muscle-strengthening activities have been uncertain. The analysis aimed to determine whether a specific weekly dose of resistance training improves survival and how it interacts with aerobic activity.
Data & Statistics
46 % reported any resistance training; 74 % met the aerobic guideline of >=150 minutes/week (?7.5 MET-hours). 90–119 minutes of weekly strength work cut all-cause mortality by 13 %, cardiovascular death by 19 % and neurological death by 27 %, with no added benefit above 120 minutes. Small amounts (1–29 minutes) reduced cancer death by 21 % (30–59 minutes by 18 %). Combining 60–119 minutes of strength with 30–44 MET-hours of aerobic activity lowered overall death risk by 45 %; higher aerobic volumes (>=45 MET-hours) reduced risk by 53-58 % irrespective of strength training.
Why It Matters
The findings identify a weekly target—90–120 minutes of resistance training—that can be added to aerobic recommendations, offering measurable reductions in all-cause, cardiovascular and neurological mortality without the diminishing returns of higher volumes.
Official Statements & Responses
The authors note a dose-response relationship, indicating that different health outcomes may require distinct amounts of resistance training. They stress that adding strength work improves survival across all aerobic levels up to 45 MET-hours per week, reinforcing combined-exercise guidelines.
Criticism & Limitations
Because the study is observational, it cannot establish causality. Exercise was self-reported, introducing recall bias, and data on intensity or session length were lacking. The lack of additional benefit above 120 minutes conflicts with some fitness advice that promotes higher volumes.
Verbatim Quotes
- “Our findings on different dose-response relationships between long-term resistance training with all-cause and cause-specific mortality suggest that different amounts of resistance training may be needed to optimize benefits across outcomes.” — Study authors
- “The observed pattern that adding resistance training further reduced mortality risk across all levels of aerobic activity up to 45 MET hours/week supports current recommendations encouraging both types of activity to maximize mortality benefits.” — Study authors
- “After accounting for other factors that could affect the results, participants who performed 90-119 minutes of strength training per week had a 13% lower risk of death from any cause.” — ScienceDaily report
- “The lowest mortality risk was seen in people combining high aerobic activity with moderate strength training.” — Pension Policy International
What’s Next
The authors recommend prospective interventional trials to test causal effects of moderate-intensity resistance training and to refine optimal dose and modality. Public-health agencies may consider adopting the 90-120 minute weekly target in future activity guidelines.
