BCAA
Branched-Chain Amino Acids
Short definition
Branched-chain amino acids: leucine, isoleucine, valine.
Full definition
BCAA are three essential amino acids (leucine, isoleucine, valine) metabolized in muscle; leucine is the key activator of mTOR and muscle-protein synthesis. Supplementation helps, but effects are limited when protein intake is adequate.
Examples
5 g BCAA pre-workout to reduce catabolism.