The Claim

Beta-alanine supplementation for 6 to 12 weeks significantly improves Yo-Yo intermittent recovery level 2 test performance in athletes, with a standardized mean difference of 1.02, indicating a large ergogenic effect likely due to enhanced muscle carnosine-mediated pH buffering during high-intensity intermittent exercise.

Source: Effects of beta-alanine supplementation on Yo-Yo test performance: A meta-analysis.

What the research says

Supports is higher

Support is ahead, but a single strong opposing study can change this.

Supports
54score
Challenges
0score

These are independent scores, not a percentage. Higher-grade studies count more, so a single strong opposing study can outweigh several weaker ones.

Cause and effect
1 study reviewed
In plain English

Taking beta-alanine for 6 to 12 weeks increases performance on the Yo-Yo intermittent recovery level 2 test in athletes, with a large effect size that corresponds to improved pH buffering in muscles during high-intensity exercise.

See the scientific wording

Beta-alanine supplementation for 6 to 12 weeks significantly improves Yo-Yo intermittent recovery level 2 test performance in athletes, with a standardized mean difference of 1.02, indicating a large ergogenic effect likely due to enhanced muscle carnosine-mediated pH buffering during high-intensity intermittent exercise.

Why this might work

Taking beta-alanine raises the amount of carnosine in muscles. During intense exercise, muscles produce acid that lowers their internal pH. Carnosine captures the excess acid, keeping the muscle environment less acidic. This allows muscles to keep contracting forcefully for longer, improving performance in repeated high-intensity efforts.

Verified mechanismbased on 1 study

What the research says

1 study

  1. Study: Effects of beta-alanine supplementation on Yo-Yo test performance: A meta-analysis.

    Taking beta-alanine daily for 6 to 12 weeks helps athletes do better in high-intensity sports like soccer that involve lots of sprinting and resting, because it helps their muscles handle the burn from acid buildup — and the science shows it really works.

Score breakdown, mechanism chain, raw evidence, ideal studies needed & 1 supporting studies

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