Trunk muscle activities during abdominal bracing: comparison among muscles and exercises.
Trunk muscle activities during abdominal bracing: comparison among muscles and exercises.
复制标题
腹部支撑期间躯干肌肉活动：肌肉和练习之间的比较。
DOI：
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发表时间：
2013
影响因子：
3.2
通讯作者：
H. Kanehisa
中科院分区：
文献类型：
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作者：
S. Maeo;Takumi Takahashi;Y. Takai;H. Kanehisa
腹部支撑通常用于健身和运动训练项目。然而，很少有关于任务期间肌肉活动在位于躯干的肌肉群之间以及在其他躯干练习期间的肌肉群之间的差异的信息。本研究旨在量化腹部支具期间肌肉活动水平与肌肉和运动相关的差异。10名健康的年轻成年男性进行了5种静态（腹部支撑、腹部凹陷、俯卧、侧躺和仰卧平板支撑）和5种动态（V型坐姿、仰卧起坐、仰卧起坐和在地板上和长凳上伸展背部）练习。在每次练习中记录腹直肌（RA）、腹外斜肌（EO）、腹内斜肌（IO）和竖脊肌（ES）的表面肌电（EMG）活动。将EMG数据标准化为在每块肌肉的最大自主收缩期间获得的那些数据（% EMGmax）。在腹部支撑期间，IO（60%）的% EMGmax值显著高于其他肌肉（RA：18%，EO：27%，ES：19%）。在腹部支撑中，RA、EO和ES的% EMGmax值显著低于其他一些运动，例如RA和EO的V-坐姿和仰卧起坐以及ES肌肉的背部伸展。然而，在腹部支撑期间IO的% EMGmax值显著高于大多数其他运动，包括诸如卷曲和仰卧起坐的动态运动。这些结果表明，腹部支具是最有效的技术之一，诱导更高的激活深腹肌，如IO肌肉，甚至与动态练习，包括躯干屈曲/伸展运动。关键点腹部支撑时躯干肌肉活动与肌肉和运动相关的差异进行了检查。腹部支撑优先激活内斜肌，即使与包括躯干屈曲/伸展运动的动态运动相比。当目的是提高脊柱稳定性时，腹部支撑应包括在运动计划中。
Abdominal bracing is often adopted in fitness and sports conditioning programs. However, there is little information on how muscular activities during the task differ among the muscle groups located in the trunk and from those during other trunk exercises. The present study aimed to quantify muscular activity levels during abdominal bracing with respect to muscle- and exercise-related differences. Ten healthy young adult men performed five static (abdominal bracing, abdominal hollowing, prone, side, and supine plank) and five dynamic (V- sits, curl-ups, sit-ups, and back extensions on the floor and on a bench) exercises. Surface electromyogram (EMG) activities of the rectus abdominis (RA), external oblique (EO), internal oblique (IO), and erector spinae (ES) muscles were recorded in each of the exercises. The EMG data were normalized to those obtained during maximal voluntary contraction of each muscle (% EMGmax). The % EMGmax value during abdominal bracing was significantly higher in IO (60%) than in the other muscles (RA: 18%, EO: 27%, ES: 19%). The % EMGmax values for RA, EO, and ES were significantly lower in the abdominal bracing than in some of the other exercises such as V-sits and sit-ups for RA and EO and back extensions for ES muscle. However, the % EMGmax value for IO during the abdominal bracing was significantly higher than those in most of the other exercises including dynamic ones such as curl-ups and sit-ups. These results suggest that abdominal bracing is one of the most effective techniques for inducing a higher activation in deep abdominal muscles, such as IO muscle, even compared to dynamic exercises involving trunk flexion/extension movements. Key PointsTrunk muscle activities during abdominal bracing was examined with regard to muscle- and exercise-related differences.Abdominal bracing preferentially activates internal oblique muscles even compared to dynamic exercises involving trunk flexion/extension movements.Abdominal bracing should be included in exercise programs when the goal is to improve spine stability.