Warden S J, Wajswelner H, Bennell K L
School of Physiotherapy, The University of Melbourne, Victoria, Australia.
Med Sci Sports Exerc. 1999 Nov;31(11):1656-64. doi: 10.1097/00005768-199911000-00024.
Many commercially available pieces of abdominal exercise equipment have been introduced to facilitate endurance training of the abdominal musculature. One of the latest devices is the Abshaper. The aim of this study was to investigate whether there is any difference between abdominal exercises performed while using the Abshaper compared with those performed conventionally.
Using surface electromyography (EMG), the upper and lower regions of rectus abdominis (RA), the external oblique (EO), and sternocleidomastoid (SCM) muscles of 22 first-year physical therapy students were assessed. Each participant performed five straight trunk curls and five side trunk curls both with the Abshaper and conventionally. To test for differences in relative peak and mean EMG activity between the two modes of exercise execution, paired t-tests (alpha = 0.05) were performed. Differences in the average time percentile at which peak EMG activity occurred were assessed by repeated measures ANOVA (alpha = 0.05).
Exercises performed while using the Abshaper resulted in significantly greater relative peak and mean EMG activity within the upper portion of RA. For both the lower portion of RA and the EO muscles, no differences were found between the two modes of exercise execution. For SCM, Abshaper exercises resulted in significantly lower relative peak and mean EMG activity. In respect to the timing of peak EMG activity, no difference was found between the two modes of exercise execution for either the upper portion of RA, the EO, or SCM muscles. For lower RA, peak EMG activity occurred significantly earlier during conventional abdominal exercises in comparison with those performed while using the Abshaper.
The Abshaper has a role in exercising the abdominal musculature.
许多市面上可买到的腹部锻炼器材已被引入，以促进腹部肌肉的耐力训练。最新的器械之一是腹肌塑形器。本研究的目的是调查使用腹肌塑形器进行腹部锻炼与传统方式进行腹部锻炼之间是否存在差异。
使用表面肌电图（EMG），对22名一年级物理治疗专业学生的腹直肌（RA）上、下区域、腹外斜肌（EO）和胸锁乳突肌（SCM）进行评估。每位参与者使用腹肌塑形器和传统方式分别进行5次直腿卷腹和5次侧卷腹。为了测试两种运动执行模式之间相对峰值和平均肌电活动的差异，进行了配对t检验（α = 0.05）。通过重复测量方差分析（α = 0.05）评估肌电活动峰值出现的平均时间百分比差异。
使用腹肌塑形器进行的锻炼导致RA上部的相对峰值和平均肌电活动显著更大。对于RA下部和EO肌肉，两种运动执行模式之间未发现差异。对于SCM，使用腹肌塑形器进行的锻炼导致相对峰值和平均肌电活动显著更低。关于肌电活动峰值的时间，RA上部、EO或SCM肌肉的两种运动执行模式之间未发现差异。对于RA下部，与使用腹肌塑形器进行的锻炼相比，传统腹部锻炼期间肌电活动峰值出现得明显更早。
腹肌塑形器在锻炼腹部肌肉方面有一定作用。
