Cho Sung-Hak, Kim Kang Hoon, Baek Il-Hun, Goo Bong-Oh
Department of Physical Therapy, College of Health Sciences, Catholic University of Pusan.
J Phys Ther Sci. 2013 Aug;25(8):907-9. doi: 10.1589/jpts.25.907. Epub 2013 Sep 20.
[Purpose] This study examined the contraction rates of abdominal muscles in relation to the posture of chronic lumbar pain patients and normal subjects. [Subjects] The subjects were 17 chronic low back pain (CLBP) patients and 17 normal people between the ages of 20 and 59. [Methods] Experimental postures included a supine position, a sitting position, and a standing position. Measurements were taken at rest and during abdominal contraction. The measurement at rest was taken during expiration with comfortable breathing, and the measurement during contraction was taken at maximum expiration of forced expiration. Muscle contraction rates (on contraction and at relaxation) were calculated. [Results] There were significant differences between CLBP patients and normal subjects in the transversus abdominis (TrA) in the standing position. [Conclusion] Changes in contraction rates of the abdominal muscles of normal subjects and CLBP patients were examined in different postures at maximum expiration. It was found that the contraction rate of TrA in CLBP patients in a standing position, is significantly lower than that of normal subjects.
[目的] 本研究考察了慢性腰痛患者和正常受试者腹部肌肉收缩率与姿势的关系。[对象] 研究对象为17名年龄在20至59岁之间的慢性下腰痛（CLBP）患者和17名正常人。[方法] 实验姿势包括仰卧位、坐位和站立位。在静息状态和腹部收缩时进行测量。静息测量在舒适呼吸的呼气过程中进行，收缩测量在用力呼气的最大呼气时进行。计算肌肉收缩率（收缩时和放松时）。[结果] 站立位时，CLBP患者与正常受试者的腹横肌（TrA）存在显著差异。[结论] 研究了正常受试者和CLBP患者腹部肌肉在最大呼气时不同姿势下的收缩率变化。发现CLBP患者站立位时TrA的收缩率显著低于正常受试者。
