The Study
Effects of β-alanine supplementation on exercise performance: a meta-analysis
This study looked at lots of smaller experiments where people took a supplement and then did exercise. It found that, on average, the supplement helped people exercise longer before getting tired — but only during workouts that last about 1 to 4 minutes. It didn’t help with short sprints or very long runs.
Analysis score
Maximum 100 for a systematic review with meta-analysis.
Where the score came from
Taking β-alanine helps your muscles handle burning during intense exercise, like sprinting for 1–4 minutes, by buffering acid buildup.
Where does this study sit?
Reviews of RCTs (Meta-analyses)
Max 100Randomized Trials
Max 90Reviews of Cohort Studies
Max 85Cohort Studies
Max 72Reviews of Case-Control Studies
Max 63Case-Control Studies
Max 58Cross-Sectional & Case Series
Max 50Expert Opinion
Max 539 / 100
Quality score
The highest quality evidence. Systematic reviews and meta-analyses that pool randomized controlled trials, giving the most reliable summary of experimental evidence.
Key takeaways
Summary
Based on the study abstract and findings.
- 1A 2.85% improvement could mean gaining 6 seconds in a 1500m race — enough to win a medal in elite competition, but only if you're not an elite athlete already.
- 2It improves time to exhaustion by 2.85% on average during 60–240 second efforts.
- 3No benefit for sprints under 60 seconds or for timed races (like a 400m run).
- 4Dose didn't matter much — even low doses worked.
Score breakdown, methodology, conflicts of interest, evidence analysis & raw study data
Publication
Journal
Amino Acids
Year
2012
Authors
R. Hobson, B. Saunders, G. Ball, R. Harris, C. Sale
Related Content
Videos (1)
Claims (8)
Taking beta-alanine increases exercise capacity during high-intensity efforts by an average of 2.85% compared to taking a placebo.
Taking beta-alanine improves performance during high-intensity exercise lasting 1 to 4 minutes, especially when the exercise continues until exhaustion.
Taking β-alanine supplements does not change performance in short bursts of exercise under 60 seconds, according to combined results from 14 studies comparing supplement and placebo groups.
Taking β-alanine supplements does not make people faster or improve their performance when doing short, intense exercise, no matter how long the effort lasts.
Increasing the total amount of β-alanine supplement from 108 to 448 grams does not lead to greater improvements in exercise capacity, and the benefits stop increasing at moderate doses.
Taking β-alanine increases exercise capacity during activities longer than 240 seconds, with a small but statistically significant effect, though the benefit is smaller than during activities lasting 60 to 240 seconds.
Not medical advice. For informational purposes only. Always consult a qualified healthcare professional before making health decisions.