一般认为腰痛综合征和腰椎不稳定与椎旁肌无力和疲劳有关。为了辅助诊断腰背部疾患和改进治疗措施需要一种评估椎旁肌功能的可靠而客观的方法。 肌电图(EMG)已广泛用于研究腰肌功能。但仅用EMG不能准确反映疲劳力量的变化。 肌音图(AMG)能反映肌肉机械活动,因此可能用作肌力指标。肌音活动随肌肉短暂收缩力增强而呈线性增加。 Generally considered low back pain syndrome and lumbar instability and paraspinal muscle weakness and fatigue related. In order to aid in the diagnosis of lower back and lower back disorders and to improve treatment, there is a need for a reliable and objective method of assessing paraspinal muscle function. Electromyography (EMG) has been widely used to study lumbar muscle function. However, EMG alone can not accurately reflect changes in fatigue. Muscular chart (AMG) can reflect muscle mechanical activity, it may be used as an indicator of muscle strength. Muscle tone activity increases with short-term muscle contraction increased linearly.