Figure 1From: Effects of beta-hydroxy-beta-methylbutyrate (HMB) on exercise performance and body composition across varying levels of age, sex, and training experience: A reviewPossible Mechanisms of HMB action. HMBs proposed mechanisms of action include (A) Increased sarcolemal integrity via conversion to HMG-CoA reductase, (B) enhanced protein synthesis via the mTOR pathway and (C) depression of protein degradation through inhibition of the Ubiquitin pathway.Back to article page