竞技健美操剪式变身跳转360度动作运动学分析

Kinematics Analysis of Scissors Leap 1/1 Turn in Sports Aerobics

选取竞技健美操难度动作中具有代表性的跳跃类动作"剪式变身跳转360°",采用录像观察与统计,从运动员动作的起跳阶段、腾空阶段、落地阶段进行生物力学分析,记录相应阶段3名运动员所完成动作的运动生物力学参数,对其踝角、膝角、髋角、肩角、躯干角以及大腿夹角6项技术参数差异进行比较、分析和整理,得出完成动作技术较好的运动员的各项参数指标,为运动员能更好地完成"剪式变身跳转360°"动作提供理论依据,以期能促进我国竞技健美操难度技术动作的发展。

International Aerobics Rules for the period from 2005 to 2008 set more specific requirements on athletes in their comprehensive physical quality, the ability to accurately reflect the aerobics technical characteristics, and accurate completion of different groups of difficult movements. With the new rules, the Federation of International Gymnastics focuses on the four groups of as follows ：dynamic, static ,jump class ,balance and flexibility. We choose scissors leap 1/1 turn as the study object. With video records and statistic analysis,we carry out biomechanical a- nalysis of the biomechanieal parameters of the take- off,jumping and landing by three athletes, and compare the differences in the movements of their ankles, knees, eoxae, shoulders, and bodies and in the angles between their thighs. The analysis leads to the correlation of the parameters to good technical skills, which provides theoretical reference for athletes in their performance.