90 minutes of strength training per week for a longer life: the 147,000-person study
How much strength training do you actually need to see real longevity benefits? A study published in June 2026 gives a specific answer. Following 147,000 people for 30 years, it identifies a clear sweet spot: 90 to 120 minutes of resistance training per week is associated with significantly reduced all-cause mortality.
Key Takeaways
- 147,000 participants tracked for 30 years — one of the largest studies ever on strength training and longevity
- Sweet spot: 90-120 minutes of weekly strength training for maximum mortality reduction
- Below 90 min: real benefits, but less than optimal. Above 120 min: no additional longevity advantage
- Association remains significant even after adjusting for cardiovascular exercise
- Strength training alone (without cardio) is still beneficial — but the combination is most effective
Why this study is different
Most studies on strength training and health involve cohorts of a few thousand people tracked for 5-10 years. The June 2026 study is in a different category: 147,000 participants, 30 years of follow-up. That scale is what gives the findings weight. With that volume of data, the associations detected aren't statistical noise — they reflect real public health trends.
Equally important: the researchers adjusted for cardiovascular activity. They isolated the effect of strength training specifically, independent of cardio. The results hold up after that adjustment — suggesting resistance training has its own effects on longevity beyond just improving cardiovascular fitness as a side effect.
The 90-120 minute window: what it looks like in practice
90 to 120 minutes per week is accessible. Here's what it looks like:
- 3 sessions of 30-40 minutes — compatible with busy schedules
- 2 sessions of 45-60 minutes — the most common gym format
- 1 longer session + 1 shorter session — for people with limited weekday availability
What's notable about this window is that it doesn't require high-intensity training or extreme volume. Someone doing two 45-minute sessions per week consistently is in the zone the study identifies as optimal. You don't need 5 days a week or heavy compound lifting to 1RM.
Beyond 120 minutes: diminishing returns on longevity
This might be the most counterintuitive finding. Going from 0 to 90 minutes of weekly strength training significantly reduces mortality risk. From 90 to 120 minutes, you get additional benefit. But beyond 120 minutes, the curve flattens — no meaningful additional longevity advantage.
That doesn't mean training more is pointless. For performance goals, body composition, or sport-specific preparation, higher volumes make sense. But for the longevity objective specifically, 90-120 minutes per week appears to be the optimal dose. After that threshold, additional gains on this specific marker are marginal.
Strength training alone vs. combined with cardio
The study confirms what earlier research has suggested: the combination of strength training and cardio is the most effective approach for reducing mortality. Participants doing both had better outcomes than those doing only resistance training.
But strength training alone — without any cardio — is still significantly more beneficial than inactivity. This isn't about one type of exercise beating another. It's about complementary adaptations. Strength training builds muscle mass, improves bone density, regulates blood glucose, and reduces chronic inflammation. Cardio works on cardiovascular capacity, aerobic fitness, and other metabolic markers. The two together cover a broader range of beneficial adaptations.
What this changes about how you think about training
For most people, strength training is framed as an aesthetic choice: do I want to build muscle, do I want to look different? This study reframes it. It's not just aesthetic — it's a longevity investment with a 30-year evidence base.
90-120 minutes of weekly resistance training is a relatively modest time investment for mortality benefits now quantified over three decades. Whether you're just starting out or already training consistently, this volume window seems to be the threshold worth hitting — and maintaining.