BCAA endurance: 15 studies, no consistent effect on endurance.
BCAA endurance is a combination around which an entire sports nutrition industry has been built. A recent systematic review shows there is almost no evidence for it. The Del Guerra team and co-authors analysed 15 studies using the PRISMA 2020, Cochrane, and GRADE methodologies. The conclusion is straightforward: branched-chain amino acids do not provide a significant increase in either performance or recovery for runners and cyclists. Biochemistry in...
