【作者】 闫红光；

【Author】 YAN Hong-guang(Dept.of Human Sports Science, Shenyang Physical Education Institute,Shenyang 110032,Liaoning, China)

【机构】 沈阳体育学院运动人体科学系 辽宁沈阳110032；

【摘要】 运用爱捷影像分析系统对欧晓涛和邱森的自由式滑雪空中技巧运动中高难bdFFF动作进行技术攻关研究。发现动作的第1空翻"dF"段存在横轴翻转严重过度,纵轴转体不足的现象;第1次论述了运动员在空中飞行时水平速度为非匀变速变化、垂直速度为非匀速变化及转体的非匀速性;并第1次准确地计算了三周台在出台速度、飞行远度、高度、空中转体用时、腾空总时间、合理落水角度等运动学变量,填补了国内外该项目研究领域的空白,并为运动队的日常训练和运动技术的规范提供科学的依据。更多还原

【Abstract】 This article analyzes many kinematics parameters of Ou Xiao-tao and QIU Sen’s bdFFF action with the 2D EIMG video system.The results show that there exist the phenomena that the rotation around horizontal axis is serious over and the rotation around vertical axis was lack in dF phase of the bdFFF action.The paper expounds the horizontal flying speed,vertical speed and rotation speed in the air are not uniform firstly.Moreover.It calculates accurately the speed of leaving platform,flying distance,height,rotation time in the air,total time of jumping and rational angle of falling into water for the first time and it filles up the black of this field in the world.Furthermore,it provides scientific references for the routine training of sports teams and the standardization of sports techniques.更多还原