Movement reorganization to compensate for fatigue during sawing

Julie N. Côté; Pierre A. Mathieu; Mindy F. Levin; Anatol G. Feldman

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Movement reorganization to compensate for fatigue during sawing

机译：重新组织运动以补偿锯切过程中的疲劳

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Peripheral (muscle) aspects of fatigue are well documented. However, little is known about the central aspects of fatigue that could influence, in particular, multijoint coordination. To investigate the central aspects of fatigue, we compared the multijoint kinematics of nonfatigued and fatigued individuals while sawing. Muscle fatigue was associated with decreases in sawing force and movement amplitude at the elbow whereas the basic characteristics of the saw trajectory, including the movement direction, extent and duration, remained invariant. This invariance was maintained by increasing the movement amplitude at the wrist, shoulder and trunk. The system thus takes advantage of the redundancy of the motor apparatus to maintain the endpoint trajectory despite fatigue.

机译：疲劳的周围（肌肉）方面已得到充分证明。但是，人们对可能影响尤其是多关节协调的疲劳的主要方面知之甚少。为了研究疲劳的主要方面，我们比较了锯时无疲劳和疲劳的人的多关节运动学。肌肉疲劳与肘关节上的锯切力和移动幅度的降低有关，而锯切轨迹的基本特征（包括移动方向，范围和持续时间）保持不变。通过增加手腕，肩膀和躯干处的运动幅度来保持这种不变性。因此，该系统利用了电机设备的冗余度来尽管疲劳但仍可保持端点轨迹。

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来源
《Experimental Brain Research》 |2002年第3期|394-398|共5页
作者
Julie N. Côté; Pierre A. Mathieu; Mindy F. Levin; Anatol G. Feldman;
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作者单位

Department of Physiology Institute of Biomedical Engineering University of Montreal;

Department of Physiology Institute of Biomedical Engineering University of Montreal;

Department of Physiology Institute of Biomedical Engineering University of MontrealCenter for Multidisciplinary Research in Rehabilitation (CRIR);

Department of Physiology Institute of Biomedical Engineering University of MontrealCenter for Multidisciplinary Research in Rehabilitation (CRIR)Institute for Rehabilitation of Montreal;

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正文语种 eng
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关键词
Motor control; Multijoint coordination; Redundancy problem; Human;

机译：电机控制;多关节协调;冗余问题;人类;

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Movement reorganization to compensate for fatigue during sawing

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