BCAAs improve exercise performance
7.0Moderate
evidence
evidence
The Claim
Some athletes and fitness enthusiasts believe that supplementing with BCAAs can enhance their exercise performance, delaying fatigue and improving endurance.
Origin
This belief has been propagated through sports nutrition marketing and anecdotal reports from athletes.
What Science Says
Current evidence from RCTs shows mixed results. A systematic review revealed that while BCAAs might reduce perceived exertion, they do not consistently improve objective performance measures like time to exhaustion or VO2 max. Therefore, their effect on performance is not as robust as some claim.
Verdict
Misleading
Sources
- PMID:36235655 Oral Branched-Chain Amino Acids Supplementation in Athletes: A Systematic Review.
- PMID:39915258 The efficacy of dietary supplements on health status and performance of football players: a systematic review.
- PMID:41346907 The Effect of Oral Pure Branched-Chain Amino Acid Supplementation on Exercise Performance and Body Composition: A Systematic Review.