The Claim
In untrained young men, performing three sets per exercise during resistance training for 11 weeks results in a 16% increase in peak isokinetic knee-extension torque, which is significantly greater than the 8% increase observed with one set per exercise.
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 untrained young men, doing three sets of leg exercises per session for 11 weeks leads to a 16% increase in maximum knee extension strength, while doing one set leads to an 8% increase.
See the scientific wording
In untrained young men, training with three sets per exercise for 11 weeks increases peak isokinetic knee-extension torque by 16%, significantly more than the 8% increase observed with one set per exercise, suggesting that higher training volume enhances neuromuscular performance in the quadriceps.
Doing more sets of leg exercises causes muscle fibers to grow thicker, which lets them produce more force when contracting, resulting in stronger knee extensions.
What the research says
1 studyIn guys who never lifted weights before, doing three sets of leg exercises for 11 weeks made their knee strength grow much more than doing just one set—exactly what the claim says.
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.