A study published June 2, 2026 in the British Journal of Sports Medicine tracked 147,000 adults for up to 30 years and measured the effect of strength training on mortality risk. It's the largest study of this kind to date. The main finding: 90 to 120 minutes of strength training per week is enough to significantly reduce the risk of early death — and doing more doesn't add further benefit.
This isn't a generic "exercise is good for you" message. It's a precise dose. And it's a dose most people can hit in just 2-3 sessions per week.
Key takeaways
- 147,000 adults followed for up to 30 years — the largest strength training longevity study to date
- 90-120 min/week = 13% lower all-cause mortality, 19% lower cardiovascular mortality
- 27% lower neurological disease mortality — the most surprising finding
- Above 120 minutes per week: no additional longevity benefit
- Strength training stacks on top of aerobic exercise — it doesn't replace it
What the study actually measured
Researchers analyzed data from 147,000 US adults, tracking their exercise habits over decades. They separated two types of activity: resistance training and aerobic exercise, then crossed that data with cause-of-death records over 30 years.
The results are clear. Compared to people who do no strength training:
- Those doing 90-120 minutes of strength training per week had 13% lower risk of dying from any cause prematurely
- Their risk of dying from cardiovascular disease was 19% lower
- Their risk of dying from neurological or brain disease was 27% lower
That last number is the most striking. Most people connect strength training to muscle mass and heart health. Few connect it to brain protection. Yet the effect is real — and it's the largest of the three.
The ceiling rule: above 120 minutes, no additional benefit
The study also identifies something most people don't hear: doing more strength training doesn't add more longevity benefit. Above 120 minutes per week, the mortality reduction curves flatten. The body has already received the protective stimulus. Beyond that, more training is about performance, aesthetics, or enjoyment — not living longer.
That ceiling is actually good news. It means you don't need to train like an athlete to get the maximum protective benefit. Two 45-minute sessions per week is enough. Or three 30-minute sessions. Pick the format that fits your life.
Strength training + aerobic exercise: the effects stack
The other important result: the benefits of strength training are additive to those of aerobic exercise, not a substitute. People who combine both have the best longevity outcomes — significantly better than those who do only one type.
For most people, that means you shouldn't choose between the gym and cardio. The optimal program combines:
- 90-120 minutes of strength training per week (resistance)
- 150 minutes of moderate aerobic activity or 75 minutes of intense aerobic activity per week (WHO guidelines)
If you run and lift, you're on the right track. If you only do one, you're leaving significant health benefit on the table.
What it means for your training week
90-120 minutes per week is realistic. You can get there multiple ways:
- 2 sessions of 45 minutes — the classic format, twice a week
- 3 sessions of 30 minutes — short but consistent
- 1 longer session (60 min) + 1 shorter session (30-40 min)
What matters isn't the exact structure. It's the total weekly dose. The updated 2026 ACSM Resistance Training Position Stand — the first update in 17 years — confirms that consistency beats complexity for long-term health benefits.
For people already doing more than 2 hours of strength training per week: nothing here says to cut back. This data is about longevity, not performance, body composition, or the enjoyment of training. If you want to be stronger or more muscular, do more. But know that for protection against early death, you've already hit the maximum benefit at 2 hours.