Knox Michael F, Chipchase Lucy S, Schabrun Siobhan M, Marshall Paul W M
Western Sydney University, School of Science and Health, Campbelltown, New South Wales 2751, Australia.
J Electromyogr Kinesiol. 2017 Dec;37:117-124. doi: 10.1016/j.jelekin.2017.10.009. Epub 2017 Oct 20.
The purpose of this study was to determine if 8 weeks of exercise affects motor control in people with chronic low back pain (CLBP), measured by anticipatory (APAs) and compensatory postural adjustments (CPAs). APAs and CPAs were measured prior to and following 8 weeks in two groups of people with CLBP: an exercise group (n=12) who attended three exercise sessions per week for 8 weeks; and a non-exercise control group (n=12) who were advised to continue their usual activities for the duration of the study. APAs and CPAs were recorded during unilateral arm flexion, bilaterally from rectus abdominis (RA), transverse abdominis/internal oblique (TA/IO), and erector spinae (ES) via surface electromyography. Analysis of muscle onsets and APA amplitudes suggests APAs did not change for either group. Ipsi-lateral TA/IO CPAs increased for the exercise group and ipsi-lateral TA/IO CPAs decreased for the control group. Only exercise promoted a pattern of TA/IO activity during CPAs similar to healthy individuals, suggesting improved control of rotational torques. These results show motor control improvement following exercise in people with CLBP, highlighted by improved side specific control of TA/IO.
本研究的目的是确定8周的运动是否会影响慢性下腰痛（CLBP）患者的运动控制，通过预期性（APAs）和代偿性姿势调整（CPAs）来衡量。在两组CLBP患者中，在8周前后测量APAs和CPAs：运动组（n = 12），每周参加三次运动课程，共8周；非运动对照组（n = 12），建议在研究期间继续其日常活动。在单侧手臂屈曲过程中，通过表面肌电图从腹直肌（RA）、腹横肌/腹内斜肌（TA/IO）和竖脊肌（ES）双侧记录APAs和CPAs。对肌肉起始和APA幅度的分析表明，两组的APAs均未改变。运动组同侧TA/IO的CPAs增加，而对照组同侧TA/IO的CPAs减少。只有运动促进了CPAs期间TA/IO活动的模式，类似于健康个体，表明对旋转扭矩的控制得到改善。这些结果表明，CLBP患者运动后运动控制得到改善，突出表现为TA/IO的侧方特异性控制得到改善。
