Kim Kang Hoon, Cho Sung-Hak, Goo Bong-Oh, Baek Il-Hun
Department of Physical Therapy, College of Health Sciences, Catholic University of Pusan.
J Phys Ther Sci. 2013 Jul;25(7):861-3. doi: 10.1589/jpts.25.861. Epub 2013 Aug 20.
The purpose of the present study was to compare the contraction ability at maximum expiration of the transversus abdominis (TrA) in patients with chronic low-back pain (CLBP) with that of healthy individuals. [Subjects] We studied 15 patients with CLBP and 15 healthy subjects. The subjects were informed of the study's aim and methods, and the experiment was performed after obtaining the consent of the subjects. [Methods] The thickness of the abdominal muscles was measured using a LOGIQ Book XP (GE, USA). The main outcome variable was the ratio of TrA thickness at maximum expiration versus in the relaxed position (TrA activation ratio). [Results] There was a difference between the healthy subjects and the back pain subjects with regard to the thickness of the TrA at rest and the thickness of the muscle during contraction. However, there was no difference in the rate of change in the muscle activity. [Conclusion] In conclusion, CLBP patients exhibited atrophy of the TrA muscle, but voluntary TrA muscle activation was similar to that of the normal subjects.
本研究的目的是比较慢性下腰痛（CLBP）患者与健康个体在最大呼气时腹横肌（TrA）的收缩能力。[研究对象]我们研究了15例CLBP患者和15名健康受试者。向受试者告知了研究目的和方法，并在获得受试者同意后进行了实验。[方法]使用LOGIQ Book XP（美国通用电气公司）测量腹部肌肉厚度。主要观察变量是最大呼气时TrA厚度与放松位置时TrA厚度的比值（TrA激活率）。[结果]健康受试者与背痛受试者在静息时TrA厚度以及收缩时肌肉厚度方面存在差异。然而，肌肉活动的变化率没有差异。[结论]总之，CLBP患者表现出TrA肌肉萎缩，但TrA肌肉的自主激活与正常受试者相似。
