膝関節伸展における動的筋力・速度・パワーの経時的変化

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The purpose of this study was to observe the instantaneous changes of the dynamic force, velocity and power during the concentric contraction of the voluntary maximal knee extension. Five healthy male subjects (25-27yrs.) volunteered to participate in this study. For the purpose of this study, an apparatus of the after load method was designed to measure the acceleration of the knee extension. The loads used in this study were determined from the percerntages of the maximal isometric strength. The dynamic force, velocity and power were calculated from the acceleration curves. The results were as follows : 1 ) The dynamic force-time curves could be divided into three types ; the curve with one peak (31%), the curve with two peaks (59%) and the curve with three peaks (10%). 2 ) The velocity-time curves could be divided into two types ; the curve in which the velocity showed continuous rise till the end of the knee extension (30%), and the curve which showed a peak just before the end of the knee extension (70%). 3 ) The power-time curve showed a peak between the peaks of the dynamic force and velocity. 4 ) The time latency to the peaks of the dynamic force, velocity and power was observed, and the time latency extended with increasing the load. It was concluded that the peak of force was observed firstly, then the peak of power was shown, and lastly the peak of velocity was obtained with using the loads ranged from 0% to 60% of MIS, and each time latency was extended with increasing the load.
中京大学の論文
1986-09-25

膝関節伸展における動的筋力・速度・パワーの経時的変化

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