A measure of body movement coordination during repetitive dynamic lifting
A measure of body movement coordination during repetitive dynamic lifting
复制标题
重复动态提升过程中身体运动协调性的测量
DOI：
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发表时间：
1993
期刊：
影响因子：
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通讯作者：
J. A. Kubinski
中科院分区：
文献类型：
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作者：
J. Boston;T. Rudy;S. Mercer;J. A. Kubinski
一种方法是发展表征协调的身体运动在一个长时间的重复等动力提升任务。由臀部和膝盖角度定义的身体运动用双曲切线模型来描述。时间中点和上升时间，通过提升的总持续时间归一化，用来描述提升的时间，髋关节和膝关节中点之间以及髋关节和膝关节上升时间之间的差异描述了髋关节和膝关节运动的相对时间或协调性。对照组倾向于使用两个关节同时完成动作的升降模式，而慢性腰痛患者更多地使用两个关节不同时间完成动作的升降模式。结果表明，在评估慢性腰痛患者和对照组之间的举重差异时，髋关节和膝关节的相对运动可能是重要的考虑因素。>
A method was developed to characterize the coordination of body movements during a prolonged repetitive isodynamic lifting task. Body movements, defined by angles at the hip and knee, were described by hyperbolic tangent models. The temporal midpoint and the risetime, normalized, by the total duration of the lift, were used to describe the timing of the lift, and differences between the hip and knee midpoints and between the hip and knee risetimes described the relative timing, or coordination, of the hip and knee movements. Control subjects tended to use a lifting pattern in which the two joints finished the movement at the same time, while patients with chronic lower back pain more frequently used a movement pattern in which the two joints finished the lifting movement at different times. The results suggest that the relative movement of the hip and knee may be important to consider when evaluating lifting differences between chronic low back pain patients and control subjects. >