Hodges P W, Richardson C A
Department of Physiotherapy, University of Queensland, Australia.
J Spinal Disord. 1998 Feb;11(1):46-56.
The temporal parameters of the response of the trunk muscles associated with movement of the lower limb were investigated in people with and without low back pain (LBP). The weight shift component of the task was completed voluntarily prior to a stimulus to move to allow investigation of the movement component of the response. In the control subjects the onset of electromyographic (EMG) activity of all trunk muscles preceded that of the muscle responsible for limb movement, thus contributing to the feed-forward postural response. The EMG onset of transversus abdominis was delayed in the LBP subjects with movement in each direction, while the EMG onsets of rectus abdominis, erector spinae, and oblique abdominal muscles were delayed with specific movement directions. This result provides evidence of a change in the postural control of the trunk in people with LBP.
对有和没有下背痛（LBP）的人群，研究了与下肢运动相关的躯干肌肉反应的时间参数。在施加移动刺激之前，任务的体重转移部分是自愿完成的，以便研究反应的运动部分。在对照组中，所有躯干肌肉的肌电图（EMG）活动起始均早于负责肢体运动的肌肉，从而促成前馈姿势反应。在LBP受试者中，腹横肌的EMG起始在各个方向的运动时均延迟，而腹直肌、竖脊肌和腹斜肌的EMG起始在特定运动方向时延迟。这一结果为LBP患者躯干姿势控制的变化提供了证据。
