The Claim
Beta-alanine supplementation improves Yo-Yo test performance in athletes through increased muscle carnosine concentration, which reduces acidosis during high-intensity intermittent 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.
Beta-alanine supplementation increases muscle carnosine levels in athletes, which reduces acid buildup during high-intensity intermittent exercise and improves performance on the Yo-Yo test.
See the scientific wording
The ergogenic effect of beta-alanine on Yo-Yo test performance is observed only in athletes, and the supplement’s benefit is likely mediated by increased muscle carnosine, which buffers acidosis during high-intensity intermittent exercise.
Taking beta-alanine lets muscles make more carnosine, which soaks up acid that builds up during hard, stop-and-go exercise. This keeps the muscle environment less acidic, so the muscles can keep contracting strongly for longer, letting athletes run more sprints before tiring.
What the research says
1 studyStudy: Effects of beta-alanine supplementation on Yo-Yo test performance: A meta-analysis.
Beta-alanine helps athletes do better in stop-and-go sports like soccer or basketball, but only if they take it for at least 6 weeks. It works by helping muscles handle the burn from intense exercise better.
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.