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首页> 外文期刊>Journal of electromyography and kinesiology: Official journal of the International Society of Electrophysiological Kinesiology >A comparison of muscle activity of the dominant and non-dominant side of the body during low versus high loaded bench press exercise performed to muscular failure
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A comparison of muscle activity of the dominant and non-dominant side of the body during low versus high loaded bench press exercise performed to muscular failure

机译：在低负荷的高压台压练习期间对身体主导和非显着侧的肌肉活动的比较对肌肉失效

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摘要

The main aim of the study was to compare the peak surface electromyography (sEMG) amplitude of muscles during low and high loaded bench press exercises performed to muscular failure on the dominant and non-dominant body side. Ten resistance-trained healthy males with at least six-year experience in resistance training (27.7 +/- 5.6 years, 81.1 +/- 5.8 kg and 175.3 +/- 5.2 cm, bench press one-repetition maximum [1RM] = 98.9 +/- 7.1 kg) performed the bench press at 50% and at 90%1RM. The differences in peak sEMG amplitude between body-sides and the external loads were recorded for the pectoralis major (PM), anterior deltoid (AD), and the long head of the triceps brachii (TB) during each attempt. A two-way repeated-measures ANOVAs revealed statistically significant main effect of side for AD (p < 0.001) and TB (p < 0.001) but not for PM (p = 0.168) and a significant main effect of load for TB (p < 0.001) but not for AD and PM (p = 0.229; p = 0.072; respectively). The post-hoc analysis for the main effect of side showed significantly higher peak sEMG amplitude for the dominant side compared to the non-dominant side for AD and TB at 50%1RM and 90%1RM (p < 0.001; all) with no statistically significant differences for PM (p = 0.187; p = 0.155; both loads). The post-hoc analysis for the main effect of load for TB revealed a significantly higher peak sEMG amplitude at 90%1RM compared to the 50%1RM (p = 0.009). The obtained results indicate that regardless of the external load, the peak sEMG activity of the AD, PM, and TB during the bench press exercise performed to muscular failure was higher on the dominant body-side.
机译：本研究的主要目的是比较低负荷和高负荷台压练习期间肌肉的表面肌电峰值（sEMG）振幅与优势侧和非优势侧的肌肉衰竭。十名接受过阻力训练的健康男性，至少有六年的阻力训练经验（27.7+/-5.6年、81.1+/-5.8千克和175.3+/-5.2厘米，台压一次重复最大[1RM]=98.9+/-7.1千克），在50%和90%1RM下进行台压。在每次尝试期间，记录了胸大肌（PM）、前三角肌（AD）和肱三头肌（TB）在身体两侧和外部负荷之间的表面肌电峰值振幅差异。双向重复测量ANOVAs显示，副作用对AD（p<0.001）和TB（p<0.001）有统计学意义，但对PM（p=0.168）无统计学意义；负荷对TB（p<0.001）有统计学意义，但对AD和PM无统计学意义（分别为p=0.229；p=0.072）。对侧副作用的事后分析显示，在50%1RM和90%1RM（p<0.001；全部）时，优势侧的表面肌电图峰值显著高于非优势侧（AD和TB）（p=0.187；p=0.155；两种负荷），而PM无统计学显著差异（p=0.187；p=0.155；两种负荷）。对TB负荷主要影响的事后分析显示，与50%1RM相比，90%1RM时的表面肌电峰值显著更高（p=0.009）。获得的结果表明，无论外部负荷如何，在对肌肉衰竭进行的台压运动期间，AD、PM和TB的表面肌电峰值活动在主要身体侧较高。

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