The Role of Milk- and Soy-Based Protein in Support of Muscle Protein Synthesis and Muscle Protein Accretion in Young and Elderly Persons
A new review article has been published in the Journal of the American College of Nutrition offering more insight into the role of both milk and soy-based protein on muscle protein synthesis and accretion in younger and older adults. The purpose of this review was to examine the acute and chronic responses of supplementation with milk and soy based proteins combined with resistance training on muscle protein synthesis and gains in muscle mass
Background
Protein consumption following resistance exercise enhances the response of muscle protein synthesis, resulting in a greater net muscle protein balance compared to feeding alone. The authors state that the protein source, timing of ingestion, and amount of protein to consume (relative to exercise), may have a greater impact on maintaining or increasing muscle mass in older compared to younger individuals. This is especially important concerning the potential for diminished muscle protein synthesis and sarcopenia in the elderly. Milk proteins (whey and casein) and soy proteins are nutritionally complete proteins, containing all of the amino acids in amounts sufficient to maintain all body proteins.
For full study summary, click here.
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