Metabolism, Nutrition and Exercise Laboratory, Physical Education and Sport Center, Londrina State University, Londrina, Brazil.
Department of Physical Education, Federal University of Paraná, Curitiba, Brazil.
Int J Sports Med. 2021 Jul;42(9):803-811. doi: 10.1055/a-1308-3674. Epub 2021 Jan 13.
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 (<0.05). Furthermore, the proximal site of the lateral thigh showed a larger relative increase when compared to the middle site (<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 (>0.05). Our results suggest that to perform different resistance exercises can induce hypertrophy of all sites assessed in detrained young men.
本研究旨在比较同一肌肉群或不同肌肉群的练习在不同肌肉长度部位的抗阻训练（RT）中对肌肉肥大的影响。22 名去训练的男性（23.3±4.1 岁）被随机分为以下两组：一组在所有训练课中进行相同的练习（N-VAR=11），另一组则对相同的肌肉群进行不同的练习（VAR=11）。所有受试者都接受了为期 9 周、每周 3 次的训练。使用 B 型超声评估了外侧和前大腿、肘屈肌和伸肌的近端、中部和远端的肌肉厚度。VAR 组所有分析部位均显著增加（<0.05）。此外，与中部相比，外侧大腿近端的相对增加更为显著（<0.05）。相比之下，N-VAR 组只有外侧大腿中部和肘屈肌近端的中间部位没有明显的改善（>0.05）。我们的研究结果表明，进行不同的抗阻练习可以诱导去训练年轻男性所有评估部位的肥大。
