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Whey Protein Prolongs Protein Synthesis More Than Soy Protein

February 07, 2017 - Admin

Consuming whey protein results in more prolonged muscle protein synthesis than consuming soy protein— according to researchers from the University of Auckland in New Zealand. They fed older men (age 60 to 75 years of age) 30 grams of either soy or whey protein and measured a marker of muscle protein synthesis (P70S6 kinase) from a muscle biopsy. Protein synthesis increased for two hours following consumption of soy protein but continued for four hours following the whey protein trial. Decreased muscle mass in older adults (called sarcopenia) is a serious health problem that leads to loss of mobility, premature death, decreased bone mass and poor blood sugar metabolism. A daily supplement of 30 grams of whey protein can promote muscle protein synthesis in older adults and might prevent sarcopenia. (Journal International Society Sports Nutrition, 12:6, 2015)