后外点冰跳人体重心各参数的研究

Analysis about Parameter of Body Center of Gravity for Toeloop Jump

对2003年北京中国杯世界花样滑冰大奖赛中国和世界一些优秀选手进行了跟踪定点三维测试,用国际先进的艾立尔系统和三维DLT方法对我国运动员高松和张民完成后外点冰跳动作进行了解析,比较分析了他们和完成同样跳跃动作的国外优秀选手的人体重心垂直方向位移-时间与速度-时间等相关参数。结论为落冰时支撑腿角度较小,重心偏低,虽有利于稳定但不利于重心速度的缓冲;落冰缓冲阶段冰刀侧向受力过大,使滑行不圆滑。

China International Figure Skating of the ISU was held in Beijing between 5~9 November 2003. The group of experts conducted three-dimensional track point test on some of the best athletes abroad and at home. By using advanced Alier system and three-dimensional DLT, they analyzed the movements of Gao Song and Zhang Min respectively when carried out Toeloop Jump in this competition, and then compared and analyzed the correlative parameter of Displacement-Time and Velocity-Time on vertical direction of body center of gravity. This provided specific scientific basis and quantitative examining level for the better completion of future technical training on Toeloop Jump and also offered references for developing new movements with difficulties.