The Claim
Doing leg press exercises twice a week for five weeks makes teenage rugby players much stronger when pushing with both legs at once, whether they use one leg or both legs at a time.
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.
Doing leg press exercises twice a week for five weeks makes teenage rugby players much stronger when pushing with both legs at once, whether they use one leg or both legs at a time.
See the scientific wording
Five weeks of twice-weekly unilateral or bilateral leg press training causes significant improvements in bilateral lower body strength in adolescent male rugby players, with increases of 8.9% (d = 0.53) and 10.9% (d = 0.55), respectively, demonstrating that machine-based leg press training effectively enhances maximal strength in this population.
What the research says
1 studyThe study found that doing leg press exercises twice a week for five weeks made teenage rugby players significantly stronger in both legs, just like the claim said — no matter if they trained one leg at a time or both together.
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.