Robert "Bob" Wolff from the University of Texas Medical Branch and
Metabolism Unit, Shriners Burns Hospital, in Galveston, TX has been doing research in how AA and exercise work.
Wolff took protein and studied the effect of it on protein anabolism (building) as well as slowing muscle degeneration (promoting recovery) during and after resistance exercise.
After learning that protein had a positive effect on protein muscle anabolism he broke protein down to essential amino acids (EAA) and then to Branch-chain amino acids (BCAA). All produced the same result. Wolff and his team took the BCAA and broke them down even more. They looked at the BCAA both singular and in combinations. The result is Leucine is the trigger. The EAA leucine is the key to promoting muscle anabolism and reducing muscle degeneration.
Since leucine is an essential amino acids we need to find it in our food. Luecine can be found in lean beef, soybeans, peanuts, chicken and of course egg yokes. Eat well.