Eficacy of whey protein associated to exercise in comparison to others proteins sources to gain muscle mass in young and healthy subjects
Abstract
Introduction: Some studies in humans show an increase in muscle anabolism after supplementation with whey protein in adults. Protein synthesis is an important factor in relation to muscle mass, but because of the interdependence between the various factors is not known whether long-term strategy such influence positively. Many people are using the whey protein due to its greater action on muscle protein synthesis when compared to other protein sources. Aim: To determine whether the use of whey protein is associated with a greater increase in muscle mass in young healthy subjects when compared to other protein sources. Literature review: This was a systematic review in which were included only randomized placebo-controlled trials found in the PubMed database that met the established criteria. Six trials were included for final analysis. Four trials showed no significant differences in lean mass increase between the group supplemented with whey and other nitrogen source. The different resultsof identification shows thedifficulty in controlling chronic studies, given that several factors can influence the results on the lean mass gains. Conclusion: There was no superiority of whey associated with strength training on muscle mass. Thus, wecan conclude that there isnot yet enough evidence to say that the protein Whey protein is superior to other protein sources about gaining muscle mass.
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