Yurong Gong

Superiority of Tetrapeptide Tyr–Gly–Leu–Phe over Amino Acid Mixture: Mechanisms Underlying Enhanced Systemic Amino Acid Delivery, Anti-Fatigue Efficacy, and Muscle Damage Repair

Abstract This study compared the anti-fatigue tetrapeptide YGLF with an equimolar amino acid (AA) mixture across three stages: postingestion absorption, postexercise fatigue, and muscle damage repair. Despite rapid in vitro degradation (<1% intact), YGLF elevated plasma AAs more...