The Claim
Training one leg at a time makes that leg much stronger than training both legs together — even though both methods make you equally strong when using both legs at once.
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.
Training one leg at a time makes that leg much stronger than training both legs together — even though both methods make you equally strong when using both legs at once.
See the scientific wording
In adolescent male rugby players, unilateral leg press training improves unilateral strength to a greater extent than bilateral leg press training, despite producing similar gains in bilateral strength, suggesting that training specificity and the bilateral deficit phenomenon may enhance neuromuscular adaptations in unilateral movements.
What the research says
1 studyKids who trained one leg at a time got much stronger in that one leg, while kids who trained both legs together got just as strong in both legs—but not stronger in one leg. So training one leg at a time is better if you want to boost strength in just one leg.
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.