CAJ | 학술논문

运用多刚体模型及现代计算机仿真技术，探讨人体在不同姿势下踏板所引起的跳远远度的变化特征，以寻找最佳的起跳着板姿势。结果表明：着板时小腿的姿态角、膝关节角不同组合可以使人体获得相同的远度，故仅凭着板角的大小来衡量着板技术的优劣显然是不合理的；跳远踏跳着板时刻、人体各环节姿态角对跳远距离的影响作用大小并不一致，其重要性排序依次为踏跳腿小腿的姿态角最重要，其次是踏跳腿的膝角，而躯干斜角、大腿夹角及摆动腿的膝角对跳远距离的影响相对较小；运动员在跳远踏跳着板时刻，一定存在一个最佳的踏跳腿膝关节角和小腿与地面的夹角，以这种方式上板，可获得最大的跳远距离。
운용다강체모형급현대계산궤방진기술，탐토인체재불동자세하답판소인기적도원원도적변화특정，이심조최가적기도착판자세。결과표명：착판시소퇴적자태각、슬관절각불동조합가이사인체획득상동적원도，고부빙착판각적대소래형량착판기술적우렬현연시불합리적；도원답도착판시각、인체각배절자태각대도원거리적영향작용대소병불일치，기중요성배서의차위답도퇴소퇴적자태각최중요，기차시답도퇴적슬각，이구간사각、대퇴협각급파동퇴적슬각대도원거리적영향상대교소；운동원재도원답도착판시각，일정존재일개최가적답도퇴슬관절각화소퇴여지면적협각，이저충방식상판，가획득최대적도원거리。
According to the characteristics of body movement at board striding for taking off in long jump, and by ap- plying a multiple rigid body model and modern computer simulation technology, the authors probed into the character- istics of changing of long jump farness caused by board striding in different postures, so as to seek for the optimal board striding for taking offposture, and revealed the following findings： different combinations of shank attitude angle and knee joint angle formed at board striding enable the body to reach the same farness, therefore it is obviously irra- tional to judge the performance of board striding technology based solely on the magnitude of board striding angle; at the moment of board striding for taking off in long jump, the magnitudes of influence of attitude angles of various body parts on long jump distance are different, the order of their importance is in turn the attitude angle of the shank of the take-off leg as the most important one, followed by the knee angle of the take-off leg, while the influence of torso tilting angle, thigh included angle and the knee angle of the swinging leg on long jump distance is relatively small; at the mo- ment a long jumper strides on the board for taking off in long jump, there certainly are an optimal knee joint angle of the take-off leg and an optimal included angle between the shank and the ground, which enable the long jumper to reach the farthest long jump distance if he/she strides on the board in such a way.