Motor Control Properties induced by Bi-articular Muscles
Motor Control Properties induced by Bi-articular Muscles
复制标题
双关节肌肉引起的运动控制特性
DOI：
10.2490/jjrmc.49.631
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发表时间：
2012
期刊：
影响因子：
--
通讯作者：
M. Kumamoto
中科院分区：
文献类型：
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作者：
M. Kumamoto
近年来，肌电运动学分析和控制工程学分析揭示了双关节肌独特的功能特性。一种双关节肢体连杆机构，其设置有一对穿过两个相邻关节的双关节肌肉的对抗性对以及在两端关节处的两对单关节肌肉的对抗性对，该双关节肢体连杆机构可以仅利用通知期望方向的单个输入命令信号来控制在连杆机构的端点处沿任意方向施加的输出力。具有3对6块肌肉的肢体连杆机构的输出力分布呈六边形，而不具有成对双关节肌肉和仅具有2对单关节肌肉的连杆机构的输出力分布呈四边形。六边形输出力分布的示意性特征表明，可以从输出力分布线上的四个指定点的输出力值来评估个体功能不同的有效肌肉力量。这样的肢体连杆机构还可以消除接触任务，以保持姿势稳定性。利用双关节肌肉的独特控制特性的临床应用可能会为未来的康复医学治疗带来启示。（Jpn J Rehabil Med 2012;49：631.639）
Recently the unique functional characteristics of bi-articular muscles have been revealed by means of EMG kinesiological analysis and control engineering analysis. A two-joint limb link mechanism provided with one antagonistic pair of bi-articular muscles passing over two adjacent joints as well as two antagonistic pairs of mono-articular muscles at both end joints could control output forces exerted at the end point of the link mechanism in an arbitral direction with only a single input command signal informing the desired direction. The output force distribution of the limb link mechanism with three pairs of six muscles showed a hexagonal shape, whereas the link mechanism without the paired bi-articular muscles and only with the two pairs of monoarticular muscles showed a tetragonal shape. Configurational characteristics of the hexagonal output force distribution indicated that an individual functionally different effective muscular strength can be evaluated from the output force values of four designated points on the output force distribution line. Such a limb link mechanism could also dissolve contact tasks in order to maintain postural stability. Clinical applications utilizing the unique control properties of biarticular muscles may shed light on future rehabilitation medicine therapies. ( Jpn J Rehabil Med 2012;49:631.639)