The Claim
In young, mostly male adults, higher weekly resistance training volume is associated with greater muscle hypertrophy and strength gains, with diminishing returns observed at higher volumes, and the rate of diminishing returns is more pronounced for strength than for hypertrophy.
What the research says
Supports is higher
Support is ahead, but a single strong opposing study can change this.
These are independent scores, not a percentage. Higher-grade studies count more, so a single strong opposing study can outweigh several weaker ones.
In young adult males, increasing the number of resistance training sessions per week leads to larger muscle growth and stronger muscles, but the benefits slow down at very high volumes, and this slowdown happens faster for strength than for muscle size.
See the scientific wording
In young, mostly male adults, higher weekly resistance training volume is associated with greater muscle hypertrophy and strength gains, with diminishing returns observed at higher volumes, and the rate of diminishing returns is more pronounced for strength than for hypertrophy.
When muscles are worked harder with more sets, they build more muscle protein up to a point, but after that, the body can't make more protein faster no matter how much you train. Strength gets harder to improve because the nervous system can't recruit more muscle fibers efficiently beyond a certain level, even if the muscle is bigger.
What the research says
1 studyThis study found that doing more weightlifting sets per week makes young men bigger and stronger, but after a certain point, extra sets give smaller gains—especially for strength, not muscle size.
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.