Does Performing Different Resistance Exercises for the Same Muscle Group Induce Non-homogeneous Hypertrophy?
Bruna Costa, Witalo Kassiano, João Pedro Nunes, Gabriel Kunevaliki, Pâmela Castro-e-Souza, André Luíz Félix Rodacki, Letícia T. Cyrino, Edílson Serpeloni Cyrino, Leonardo de Sousa Fortes
Abstract
Abstract The study aimed to compare the effect of performing the same or different exercises for a muscle group on resistance training (RT) sessions on muscle hypertrophy at different sites along muscle length. Twenty-two detrained men (23.3±4.1 years) were randomly allocated to the following groups: a group that performed the same exercises in all training sessions (N-VAR=11) or one that varied the exercises for the same muscle groups (VAR=11). All were submitted to 3 weekly sessions for nine weeks. Muscle thickness was assessed at the proximal, middle, and distal sites of the lateral and anterior thigh, elbow flexors, and extensors by B-mode ultrasound. The VAR group significantly increased all the sites analyzed (P<0.05). Furthermore, the proximal site of the lateral thigh showed a larger relative increase when compared to the middle site (P<0.05). In contrast, the N-VAR group were not revealed significant improvements only for the middle site of the lateral thigh and the proximal site of the elbow flexors (P>0.05). Our results suggest that to perform different resistance exercises can induce hypertrophy of all sites assessed in detrained young men.