Laboratory of Posture and Movement Physiology (PoM), University JF Champollion, Albi, France; PRISSMH Laboratory, University Paul Sabatier, Toulouse, France.
Gait Posture. 2014;39(1):333-8. doi: 10.1016/j.gaitpost.2013.07.131. Epub 2013 Aug 8.
The aim of this study was to determine whether increased muscular tension disturbs postural equilibrium more when it is asymmetrical. Ten healthy male subjects underwent a posturographic examination associated with an original uni and bilateral compressive load paradigm designed to set the active muscular tension at different controlled levels along each side of the torso. Respiratory kinematics were recorded by means of two sensing belts. Two electromyographic pre-tests were used to map out the main motor muscles of the task and to quantify the level of asymmetry induced by unilateral loads. The posturographic examination revealed that the mean deviation of the CP along the medial-lateral axis was significantly greater in unilateral than in bilateral compressive loads. It was suggested that increased muscular tension along the torso induces a more disturbing effect on posture when it is asymmetrical.
本研究旨在确定不对称的肌肉紧张是否会更干扰姿势平衡。10 名健康男性受试者接受了一种平衡测试，该测试与一种原始的单侧和双侧压缩负荷范式相关联，旨在沿躯干两侧的不同控制水平设定主动肌肉张力。呼吸运动学通过两个感应带进行记录。使用两个肌电图预测试来描绘任务的主要运动肌肉，并量化单侧负荷引起的不对称程度。平衡测试结果表明，在单侧压缩负荷下，CP 在中-侧轴上的平均偏差明显大于双侧压缩负荷。这表明，躯干肌肉紧张增加时，不对称性会对姿势产生更干扰的影响。
