Protein Supplements High in Leucine Promote Protein Synthesis in Older Men

Muscle loss is a significant problem in older men. Protein supplements are proven methods for sparing muscle mass and promoting protein synthesis in older adults. Jared Dickinson and colleagues from the University of Texas Medical Branch in Galveston determined that supplementing leucine-rich essential amino acids after resistance exercise enhanced the anabolic response to training and increased the sensitivity of muscle to amino acids. Leucine is an important trigger for protein synthesis. Weight training increases amino acid transport into muscle, which also promotes protein synthesis. The combination of key amino acids, particularly leucine, and weight training are important and effective techniques for preserving muscle mass in aging men. (Journal Nutrition, 144:1694-1702, 2014)

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