Here's a great read on the use of BCAA's to stave muscle atrophy...imagine what it can do when you're training! I love the stuff and take it 3 times a day.
http://www.ergo-log.com/can-t-train-...ose-bcaas.html
Conslusion
"In conclusion, BCAA protected against soleus muscle atrophy induced by hindlimb suspension and decreased atrogin-1 and MuRF1 protein levels, suggesting the possibility that BCAA protects against muscle atrophy, at least in part, via the inhibition of the Ub-proteasome pathway", the researchers write. "Oral BCAA administration appears to have the potential to protect against immobilization or microgravity-induced muscle atrophy."