β-alanine supplementation to improve exercise capacity and performance: a systematic review and meta-analysis. - PubMed - NCBIwww.ncbi.nlm.nih.gov
"Beta-alanine is one of the few supplements to show a consistent ergogenic benefit in controlled research. New meta-analysis confirms this benefit of beta-alanine in exercise lasting from about 30 secs to 10 mins, but shows the overall effect is fairly modest. Bottom line: For lifting sessions that involve moderate to high reps, beta-alanine can enhance performance and thus potentially improve muscular adaptations, but don't expect eye-popping results."
From Brad Schoenfeld: https://www.facebook.com/brad.schoenfeld.cscs/posts/10210661136545620