Faculdade de Educação Física e Dança, Universidade Federal de Goiás, Goiania, Brasil.
Faculdade de Educação Física, Universidade Federal do Pará, Castanhal, Pará, Brasil.
Eur J Sport Sci. 2020 Feb;20(1):72-79. doi: 10.1080/17461391.2019.1611932. Epub 2019 May 9.
The purpose of the present study was to compare the changes in anthropometric measures and muscle performance in users and non-users of androgenic anabolic steroids (AAS) performing resistance training (RT) programmes involving only multiple joint (MJ) exercises or a combination of MJ and single joint (SJ) exercises. Thirty recreational bodybuilders were divided into 4 groups: non-AAS users performing only MJ exercises (MJ), non-AAS users performing MJ + SJ (MJ + SJ), AAS users performing only MJ exercises (AAS - MJ) and AAS users performing MJ + SJ exercises (AAS - MJ + SJ). Before and after 8 weeks of training, the participants were tested for 10 repetition maximum (10RM) in different RT exercises. Flexed arm circumference (FAC), biceps and triceps skinfolds were measured. No interactions were found between time and the performance of SJ exercise in any variable ( > .05). However, there was a significant interaction between AAS use and time ( < .001), such that AAS users showed greater 10RM gains in all exercises, skinfold decreases and increases in FAC than non-users. In conclusion, our study shows that the addition of SJ exercises to MJ exercises brings no additional benefit in terms of muscle performance and anthropometric changes in trained men, either if they were using AAS or not. These results suggest that trained men can save time not including SJ in their routines and still achieve optimal results. Moreover, our results show that AAS use is associated with greater increases in muscle strength and FAC and greater reductions in biceps and triceps skinfold thickness.
本研究的目的是比较接受抗阻力训练（RT）的雄激素合成代谢类固醇（AAS）使用者和非使用者的人体测量学指标和肌肉性能变化，这些训练计划仅涉及多关节（MJ）练习或 MJ 和单关节（SJ）练习的组合。30 名娱乐性健美运动员被分为 4 组：仅进行 MJ 练习的非 AAS 使用者（MJ）、进行 MJ+SJ 练习的非 AAS 使用者（MJ+SJ）、仅进行 MJ 练习的 AAS 使用者（AAS-MJ）和进行 MJ+SJ 练习的 AAS 使用者（AAS-MJ+SJ）。在 8 周的训练前后，对参与者进行了不同 RT 练习的 10 次重复最大（10RM）测试。测量了屈臂周径（FAC）、肱二头肌和肱三头肌皮褶厚度。在任何变量中，SJ 运动的时间和表现之间都没有发现相互作用（ > .05）。然而，AAS 使用和时间之间存在显著的相互作用（ < .001），即 AAS 使用者在所有练习中表现出更大的 10RM 增益、皮褶减少和 FAC 增加，而非使用者则没有。总之，我们的研究表明，在接受训练的男性中，将 SJ 练习添加到 MJ 练习中并不会带来额外的肌肉性能和人体测量学变化的益处，无论他们是否使用 AAS。这些结果表明，训练有素的男性可以节省时间，不在他们的常规训练中包括 SJ，仍然可以获得最佳效果。此外，我们的结果表明，AAS 使用与肌肉力量和 FAC 的更大增加以及肱二头肌和肱三头肌皮褶厚度的更大减少相关。
