Hansson T, Magnusson M, Broman H
Division of Occupational Orthopaedics, Department of Orthopaedics, Sahlgren Hospital, University of Göteborg, Sweden.
Clin Biomech (Bristol). 1991 Aug;6(3):173-8. doi: 10.1016/0268-0033(91)90030-T.
The electromyography of the erector spinae muscles was studied in the thoracic and lumbar spines of six male subjects when seated in a forwardly bent position (20°) and whilst carrying extra weight (4 kg) on the front of the chest. The electromyographic responses were compared whilst the volunteers were: (a) seated in this position and exposed to whole body vibrations of 5 Hz and 0.2 g acceleration; (b) seated in this position without vibration exposure. Each test period lasted 5 minutes. Vibration exposure increased both the speed and the amount of the development of erector spinae fatigue.
对六名男性受试者在胸椎和腰椎部位的竖脊肌进行肌电图研究，研究时他们处于向前弯曲20°的坐姿，并在胸前负重4千克。比较了志愿者在以下两种情况下的肌电图反应：(a) 处于该姿势并暴露于5赫兹、0.2克加速度的全身振动环境中；(b) 处于该姿势但未暴露于振动环境。每个测试阶段持续5分钟。暴露于振动环境会增加竖脊肌疲劳发展的速度和程度。
