The Claim
In individuals who are trained in resistance exercise, increasing the volume of resistance training leads to proportional increases in both muscle hypertrophy and maximal strength.
What the research says
Roughly balanced
Support and challenge are close. The picture may shift as more studies come in.
These are independent scores, not a percentage. Higher-grade studies count more, so a single strong opposing study can outweigh several weaker ones.
If you're already used to lifting weights, doing more sets and reps over time will help you build bigger muscles and get stronger — but only if you keep training consistently.
See the scientific wording
In trained individuals, higher resistance training volumes lead to concomitant increases in both muscle hypertrophy and maximal strength.
What the research says
4 studiesMore sets led to bigger strength gains, but muscle growth didn’t clearly improve with more sets—though it might have a little. So, the claim is mostly true for strength, maybe partly true for muscle size.
More lifting sets lead to bigger muscles and stronger muscles, even if the gains slow down after a point—this study proves it by analyzing lots of past experiments.
More lifting doesn’t always mean stronger results — this study found that lifters who did a medium amount of training got stronger than those who did the most or the least.
More lifting didn’t make trained guys stronger or bigger — in fact, lifting less (5–10 sets a week) worked just as well or better than lifting a lot (15–20 sets).
Related videos
Score breakdown, mechanism chain, raw evidence, ideal studies needed & 4 supporting studies
Not medical advice. For informational purposes only. Always consult a qualified healthcare professional before making health decisions.