Higher protein intake during resistance training does not potentiate strength, but modulates gut microbiota, in middle-aged adults: a randomized control trial
Colleen F. McKenna, Amadeo F. Salvador, Riley Hughes, Susannah E. Scaroni, Rafael A. Alamilla, Andrew T. Askow, Scott A. Paluska, A. C. Dilger, Hannah D. Holscher, Michael De Lisio, Naiman A. Khan, Nicholas A. Burd
Abstract
Our research evaluates the efficacy of higher in comparison with moderate animal-based protein intake on resistance exercise training-induced muscle strength, clinical biomarkers, and gut microbiota in middle-aged adults through a dietary counseling-controlled intervention. Higher protein intake did not potentiate training adaptations, nor did the intervention effect disease biomarkers. Both diet and exercise modified gut microbiota composition. Collectively, moderate amounts of high-quality, animal-based protein is sufficient to promote resistance exercise adaptations at the onset of aging.