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How Much Lifting Is Enough? New Research Reveals the "Sweet Spot" for Building Strength

By K.A. Dunsmore Men's Fitness

Updated June 12, 2026 12:13 PM

A new analysis of 157 studies finally answers a question every lifter has asked: is there a point where more training stops paying off?

If you've ever wondered whether doubling your training volume would double your strength gains, a new systematic review and meta-analysis published in Sports Medicine provides some answers, and it may change how you think about programming.

Researchers pooled data from 157 randomized controlled trials to figure out how different sets, reps, exercises, intensity, frequency, and program length in a training program were combined to drive strength gains.

The researchers calculated a training dosage by multiplying together:

Sets × Reps × Exercises × Intensity (%1RM) × Frequency × Program Duration

This single number measured in arbitrary units (au) represents the total training stimulus a muscle receives over an entire program. The researchers also calculated an absolute dosage to estimate the actual total weight lifted.

Yes, There's a Plateau

The study confirmed what many coaches have suspected: more training helps, but only up to a point.

For chest strength, strength gains leveled off around 887,000 au.
For leg strength, the plateau showed up around 773,000 au.

What does that look like in practice?

Option A: 5 sets × 5 reps, across 7 exercises, at 80% 1RM, 4 days/week → ~896,000 au
Option B: 4 sets × 15 reps, across 8 exercises, at 55% 1RM, 2 days/week → ~844,800 au

Option A is heavier and frequent while Option B is lighter and less frequent. However, both land in roughly the same effective dosage zone, and both should produce similar strength outcomes.

The takeaway: there's more than one way to hit the target. Clients don't need to follow a single rigid template - the math gives you flexibility to design a program that fits their schedule, recovery capacity, and preferences while still landing in the productive zone.

Which Variables Matter Most?

This is where things get interesting for program design. The researchers didn't just look at total dosage. They broke down which individual ingredients mattered most.

For chest strength:

Age was the strongest predictor. Older adults actually saw greater strength gains relative to their starting point.
Training volume (sets × reps × exercises) was the second most important factor, and its effect wasn't a straight line, there's a curve, meaning volume matters a lot up to a point, then less so.

For leg strength:

Program duration was the top factor. Simply training consistently over more weeks mattered more than almost anything else.
Dosage and age also ranked highly.
Training frequency (2–3 days/week vs. 1) specifically helped when looking at absolute weight lifted.

Training intensity (how heavy the weights are, as a %1RM) did show a statistically significant relationship with strength gains, but when the researchers ranked variables by overall importance to the model, intensity ranked relatively low for both muscle groups. In plain terms: intensity matters, but it's not the dominant lever. Duration, volume, and consistency carry more weight in the bigger picture.

What About Sex Differences?

One of the more reassuring findings: when looking at relative strength gains (i.e., percentage improvement from baseline), there was very little difference between men and women. The one exception was for absolute strength gains in the legs, where male sex was associated with greater total kilograms lifted, likely reflecting differences in starting strength levels and muscle mass rather than a different response to training.

The Bottom Line for Coaches and Lifters

Total training dosage matters, but it's non-linear. Strength gains accelerate, then plateau. Pushing dosage far beyond ~770,000–890,000 au (for these populations) doesn't appear to buy additional strength.
There's no single "correct" program structure. Heavy-and-infrequent and lighter-and-more-frequent approaches can land at similar dosages and produce similar results, giving coaches real flexibility in program design.
Consistency over time (duration) and overall training volume appear to be the biggest drivers of strength development more so than chasing maximal intensity.
Age isn't a limiter and may even be an advantage. Older trainees showed strong (sometimes superior) relative gains, reinforcing that resistance training is valuable across the lifespan.

A Few Important Caveats

This research is built primarily on untrained population. There isn't enough data on trained or advanced lifters to know whether these same dosage targets and plateaus apply once someone has years of training experience. So for a beginner client, this dosage framework offers excellent guidance and reassurance that "good enough" programming really is good enough. For more advanced athletes, individual programming, periodization, and other variables (like training density or movement velocity, which weren't part of this dosage formula) likely still play a meaningful role.

Source: Lyristakis P, Wundersitz D, Cousins S, et al. The Influence of Individual Resistance Training Variables on Muscle Strength: A Systematic Review and Meta-analysis. Sports Medicine. 2026.

This story was originally published June 12, 2026 at 11:54 AM.