Full Breakdown
Strength Training of 90–120 Minutes Weekly Linked to Lower Mortality in 30-Year Cohort Study
6/13/2026, 9:28:51 PM
Core Findings
A pooled analysis of three long-term U.S. cohort studies—the Health Professionals Follow-up Study (1992-2022), the Nurses’ Health Study (2002-2021), and the Nurses’ Health Study II (2003-2021)—found that 90-119 minutes of weekly strength training was linked to the lowest mortality risk. In this dose range, all-cause mortality was 13 % lower, cardiovascular mortality 19 % lower, and neurological mortality 27 % lower than among participants who did no strength training. No further benefit appeared beyond 120 minutes per week.
Study Design
The cohort included 147,374 adults (31,540 men, 115,834 women) with age 54 years. Questionnaires captured minutes of resistance (e.g., weight lifting, push-ups, squats) and aerobic activities (e.g., walking, running, cycling). Over up to 30 years of follow-up, 35,798 deaths occurred, forming the basis for mortality analysis.
Key Results
All-cause mortality was 13 % lower for 90-119 min/week of strength training. Cardiovascular mortality fell 19 % and neurological mortality 27 % in the same range. Cancer mortality declined 21 % for 1-29 min/week and 18 % for 30-59 min/week. Participants who combined 30-44 MET-hours/week of aerobic activity with 60-119 min/week of strength training experienced a 45 % lower death risk; when aerobic activity reached >=45 MET-hours/week, mortality was reduced by 53-58 % regardless of strength-training volume.
Implications
The dose-response pattern supports public-health recommendations that endorse both aerobic and muscle-strengthening activities. Moderate weekly resistance training, when combined with sufficient aerobic exercise, appears to confer broad mortality benefits across cardiovascular, neurological, and cancer outcomes.
Official Statements
Investigators noted the observational design cannot prove causality and that self-reported exercise may contain error. They emphasized strength-training doses to optimize outcomes and said the benefit of resistance training across aerobic levels supports guidelines.
Limitations
Key limitations include reliance on self-reported exercise frequency, exclusion of certain strength modalities (e.g., calisthenics, Pilates), and lack of data on workout duration or intensity. These factors may affect the precision of dose estimates.
Conflicting Reports
No contradictory findings appeared in the source material. Nonetheless, the authors acknowledge that observational studies cannot confirm that strength training directly causes mortality reductions, underscoring a gap that randomized controlled trials could address.
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.” — Lead researcher, British Journal of Sports Medicine
- “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.” — Co-author, British Journal of Sports Medicine
Next Steps
The researchers recommend future studies using objective activity monitoring and randomized interventions to clarify causal pathways and refine optimal training prescriptions.
