Hormonal
Post-exercise hyperaminoacidemia significantly enhances muscle protein synthesis rates compared to rest, creating a synergistic anabolic effect that exceeds the sum of exercise and amino acid administration alone.
To maximize muscle building, ensure you consume adequate protein (amino acids) around your resistance training sessions. The study shows that having amino acids available immediately after exercise significantly boosts muscle protein synthesis rates more than either exercise or amino acids alone. This suggests that post-workout nutrition is a potent lever for muscle growth, particularly for those not yet highly trained.
Muscle anabolism during hyperaminoacidemia occurred entirely because of a stimulation of protein synthesis... Thus physical exercise and hyperaminoacidemia have additive effects on protein synthesis.
Why this rating
Controlled clinical trial with isotopic tracers and muscle biopsies in healthy untrained men, though small sample size (n=6).
Source
An abundant supply of amino acids enhances the metabolic effect of exercise on muscle protein
Gianni Biolo et al. · American Journal of Physiology-Endocrinology and Metabolism · 1997
DOI 10.1152/ajpendo.1997.273.1.e122
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