摘要
采用现场定点高速摄像、录像分析以及数理统计等方法,通过对A、B两组起跳阶段不同时相身体重心水平速度和垂直速度的变化与着板角、起跳缓冲和蹬伸阶段膝角变化的比较分析。结果表明:成绩较好,缓冲阶段身体重心水平速度的减小值会略大,垂直速度的增加值则更大;而且,离板瞬间身体重心水平速度和垂直速度都呈现出相对较大的趋势。
Using high speed video recorder system , the methods of video analysis and data statistical processingThe article made a comparison and analysis of the variations of the body center gravity horizontal velocity and vertical velocity to the variations of the landing board angle of the jumping foot, buffer and knee angle during the taking off phase between AB groupsThe article concluded that Chinese male elite long jumpers tend to incline to a small landing angle when the takingoff foot touched the board c...
出处
《西安体育学院学报》
北大核心
2003年第5期44-47,共4页
Journal of Xi'an Physical Education University
基金
上海体育学院科研基金资助项目(200221)
关键词
水平速度
垂直速度
着板角
膝角
运动学
跳远起跳
horizontal velocity
vertical velocity
landing board angle
knee angle
kinematics
take-off of long jump
