Kim Dae-Hyun, Kim Tae-Ho
Department of Physical Therapy, College of Rehabilitation Science, Daegu University, Gyeongsan, Korea.
J Exerc Rehabil. 2018 Dec 27;14(6):1053-1058. doi: 10.12965/jer.1836438.219. eCollection 2018 Dec.
Stability exercise (SE) and balance exercise (BE) are generally-applied clinical interventions for back pain. For a proper clinical application, it is necessary to characterize and compare the effects of SE and BE on low back pain (LBP). The purpose of this study was to compare the effects of SE and BE on the activity of trunk muscles in women with chronic LBP. Women with chronic LBP (n=30) who volunteered for this study were randomly divided into two exercise groups of 15 participants. We obtained pre- and postintervention data through application of the visual analogue scale (VAS), Oswestry Disability Index (ODI), and electromyography (EMG). While post-intervention EMG showed decreased activity of the external oblique (EO) in the SE group, the EMG results in the BE group showed increased EO activity (<0.05). Both groups had increased muscle activity of the erector spinae (<0.05). Both groups showed significant reductions on the VAS and ODI (<0.05). Both SE and BE were effective in reducing pain in the study participants. The decrease in EO muscle activity in the SE group seems to be due to the SE inducing cocontraction and distributing the role of the EO to other muscles. In contrast, EO muscle activity was increased in the BE group. It appears that the EO is important in maintaining the center of gravity and base of support during BE. The role of EO seems to maintain trunk stability as it increases muscle activity of EO.
稳定性训练（SE）和平衡训练（BE）是常用于治疗背痛的临床干预措施。为了进行恰当的临床应用，有必要对SE和BE对下背痛（LBP）的影响进行特征描述和比较。本研究的目的是比较SE和BE对慢性LBP女性躯干肌肉活动的影响。自愿参与本研究的慢性LBP女性（n = 30）被随机分为两个运动组，每组15名参与者。我们通过应用视觉模拟量表（VAS）、Oswestry功能障碍指数（ODI）和肌电图（EMG）获取干预前后的数据。干预后EMG显示SE组腹外斜肌（EO）活动降低，而BE组的EMG结果显示EO活动增加（<0.05）。两组竖脊肌的肌肉活动均增加（<0.05）。两组的VAS和ODI均显著降低（<0.05）。SE和BE在减轻研究参与者的疼痛方面均有效。SE组EO肌肉活动的降低似乎是由于SE诱导了共同收缩并将EO的作用分配给了其他肌肉。相比之下，BE组的EO肌肉活动增加。在BE过程中，EO在维持重心和支撑基础方面似乎很重要。随着EO肌肉活动增加，其作用似乎是维持躯干稳定性。
