The Claim
Training one leg at a time makes it harder for both legs to work together at full power, while training both legs together makes them work better together — the way you train changes how your legs coordinate.
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 it harder for both legs to work together at full power, while training both legs together makes them work better together — the way you train changes how your legs coordinate.
See the scientific wording
After 12 weeks of unilateral knee extension training, young women develop a significant bilateral deficit (−6.5%) in dynamic strength, whereas bilateral training induces bilateral facilitation (+5.9%), showing that training specificity alters the neural coordination between limbs during multi-limb movements.
What the research says
1 studyStudy: Neuromuscular Adaptations to Unilateral vs. Bilateral Strength Training in Women
When women trained one leg at a time, their two legs worked less well together afterward—but when they trained both legs at once, their legs worked better together. This shows the type of training changes how your brain coordinates your limbs.
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.