The Claim
In resistance-trained individuals, increasing the weekly volume of resistance training does not consistently result in greater muscle hypertrophy compared to lower training volumes.
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.
For people who already train with weights, doing more weekly sets does not reliably lead to more muscle growth than doing fewer sets.
See the scientific wording
In resistance-trained individuals, increasing the weekly volume of resistance training does not consistently lead to greater muscle hypertrophy compared to lower training volumes, suggesting that the dose-response relationship observed in untrained individuals may not apply to those already adapted to resistance exercise.
When muscles are already used to lifting weights, the signals that tell them to grow become maxed out. Adding more workouts doesn't turn up these signals any higher, so the muscles stop growing even if you do more work.
What the research says
1 studyStudy: The Importance of Previous Resistance Training Volume on Muscle Growth in Trained Individuals
For people who already lift weights regularly, doing even more sets doesn't always mean more muscle growth — their bodies are used to it, so extra work doesn't always help. It's like adding more sugar to coffee that's already sweet enough: it doesn't make it taste better.
Score breakdown, mechanism chain, raw evidence, ideal studies needed & 1 supporting studies
Not medical advice. For informational purposes only. Always consult a qualified healthcare professional before making health decisions.