| （北京师范大学 体育与运动学院，北京 100875） 摘 要：采用QUALYSIS系统、KISTLER系统，对26名竞技健美操一级运动员单次屈体分腿跳、连续两次屈体分腿跳动作进行运动生物力学分析。结果发现，男运动员能够较好地完成连续的屈体分腿跳，但是连跳中第2次跳跃在腾空时间、腾空高度、腾空时髋关节角度和垂直起跳冲量指标上都与单次屈体分腿跳差异存在显著性意义，不如单次屈体分腿跳表现得优异；女运动员完成连续的屈体分腿跳较差，连跳中第2次跳跃除了起跳缓冲时间与单个屈体分腿跳差异无显著意义外，其他指标差异均有显著意义。因此建议女运动员尽量规避两个C组难度动作的动作连接。另外，男女运动员在3个跳跃中的腾空时间、腾空高度、髋关节角度、垂直起跳冲量上差异均有非常显著意义，男运动员的跳跃效果明显优于女运动员；而在缓冲时间、蹬伸时间、起跳时间、腾空时膝关节角度上差异没有显著性意义。 |
WU Sheng-kou，JI Zhong-qiu
| （School of Physical Education and Sports，Beijing Normal University，Beijing 100875，China) Abstract: By using the QUALYSIS and KISLER systems, the authors carried out a sports biomechanical analysis on the single body bent and leg split jumping and successive two times body bent and leg split jumping moves made by 26 class one aerobic gymnasts, and revealed the following findings: the male gymnasts could complete successive body bent and leg split jumping well, however, the second jumping in successive jumping was significantly different from single body bent and leg split jumping in terms of such indexes as flying time, flying height, hip joint angle during flying and vertical takeoff momentum, not as good as what were performed in single body bent and leg split jumping; the female gymnasts had a relatively poor performance in completing successive body bent and leg split jumping, except the takeoff buffer time, which showed no significant difference, all the other indexes showed a significant difference between the second jumping in successive jumping and single body bent and leg split jumping. Therefore, the authors suggested that female gymnasts avoid the combination of two group C difficulty moves whenever possible. In addition, the male and female gymnasts showed very significant differences in the 3 jumps in terms of flying time, flying height, hip joint angle, vertical takeoff momentum, the jumping effect of the male gymnasts was significantly better than the female gymnasts’, yet there were no significant differences in terms of buffer time, stretching time, takeoff time, and knee joint angle during flying. |
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