Hyaluronic acid (HA) contributes to extracellular matrix viscosity and fiber regeneration. HA role in resistance training (RT) performance adaptations is unclear. RT men performed power training (nonfunctional overreaching (NFOR) or normal training (CG)) over 7.5 days. Post RT, the CG improved power while NFOR did not with HA content decreasing 34.5% in NFOR with no change in CG. HA is critical for muscular recovery; decreased HA may contribute to impaired power adaptations with NFOR RT. Novelty: Nonfunctional over-reaching decreases muscular hyaluronic acid.
Keywords: activation d’antagonistes; antagonist activation; entraînement en puissance; entraînement en résistance; extracellular matrix; fonction neuromusculaire; hypertonicity; hypertonie; matrice extracellulaire; neuromuscular function; overtraining; power training; raideur; remodelage tissulaire; resistance training; stiffness; surentraînement; tissue remodeling.