改良俯卧撑运动肌电生物反馈对肩胛骨稳定肌群选择的影响

H. Miri, Abbas Dostdar Rozbahani, Mojtaba Rahimi Bidhendi, Mahya Hamidi
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引用次数: 0

摘要

背景:前锯肌(SA)是一个重要的肩胛骨稳定器,在保持肩胛骨节律方面具有深远的作用。因此,改良俯卧撑加(MPUP)已被建议加强该肌肉作为封闭链锻炼。然而,很少有先前的研究报道了胸大肌(PM)的修复运动的可能性,该运动可以在俯卧撑+中取代和修正SA的功能。目的:本研究利用生物反馈肌电图检查了MPUP对一些选定的肩胛骨稳定剂的影响。方法:16名健康青年自愿参加本研究。每个受试者在两种条件下(即有或没有视觉和听觉生物反馈)从四足位进行俯卧撑。表面肌电图测量了胸大肌、前锯肌和上斜方肌的活动。配对t检验用于确定两种情况之间是否存在统计学上的显著差异。此外,计算效应大小以量化每块肌肉的肌电生物反馈的大小。结果:采用生物反馈的MPUP训练显著增加了SA肌活性,降低了PM肌活性,但UT肌活性没有显著变化。结论:由于生物反馈,过度的PM活动受到抑制,并且锻炼伴随着SA肌肉活动的增强。因此,在进行mpup时加入生物反馈有助于限制PM的补充作用并增强SA肌的活动。
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The Effect of Modified Push-up Exercise Using Electromyography Biofeedback on Selection of Scapular Stabilizing Muscles
Background: The serratus anterior (SA) muscle is an important scapular stabilizer and has a profound role in retaining the scapulohumeral rhythm. Therefore, modified push-up plus (MPUP) has been advised to strengthen this muscle as a closed chain workout. However, few previous studies have reported the possibility of a reparative motion from pectoralis major (PM) that could replace and amend SA's function during push-up plus. Objectives: The current study examined MPUP's effect using biofeedback EMG on some of the selected scapular stabilizers. Methods: Sixteen healthy young subjects voluntarily participated in this study. Each subject performed push-ups, from the quadruped position, under two conditions (i.e., with or without visual and auditory biofeedback). Surface EMG measured pectoralis major, serratus anterior, and upper trapezius activity. A paired t-test was used to determine any statistically significant difference between the two conditions. Additionally, the effect size was calculated to quantify the magnitude of EMG biofeedback in each muscle. Results: MPUP training using biofeedback significantly increased SA muscle activity and decreased PM muscle activity, but there was no significant change in UT activity. Conclusions: Excessive PM activity was repressed because of biofeedback, and the workout was done with the enhancement of SA muscular activity. Thus, including biofeedback while doing MPUPs helps limit PM's supplementary action and enhance SA muscle activity.
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