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首页> 外文期刊>IEEE transactions on rehabilitation engineering >A measure of body movement coordination during repetitive dynamic lifting
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A measure of body movement coordination during repetitive dynamic lifting

机译：重复动态举升过程中身体运动协调的一种措施

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摘要

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.
机译：开发了一种方法来表征长时间重复的等动力提升任务中身体运动的协调性。用双曲线切线模型描述了由臀部和膝盖角度定义的身体运动。通过举升的总持续时间归一化的时间中点和上升时间来描述举升的时机，髋部和膝盖中点之间以及髋部和膝盖的上升时间之间的差异描述了相对时机或协调性，髋关节和膝盖运动。对照对象倾向于使用两个关节同时完成运动的提升方式，而患有慢性下背部疼痛的患者则更频繁地使用其中两个关节在不同时间完成运动的提升方式。结果表明，在评估慢性下腰痛患者与对照组之间的抬高差异时，应考虑髋部和膝盖的相对运动。

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