| 对抓举动作技术身体各环节运动特征的研究 |
| |
| 引用本文： | 任景萍,王惠棣,叶鸣.对抓举动作技术身体各环节运动特征的研究[J].首都体育学院学报,2008,20(6). |
| |
| 作者姓名： | 任景萍 王惠棣 叶鸣 |
| |
| 作者单位： | 1. 首都体育学院,北京,100088
2. 滨州学院体育系,山东滨州,256603 |
| |
| 摘 要： | 借助三维摄像和直接线性变换(DLT)方法,获取我国优秀女子举重运动员抓举技术中身体躯干、髋、膝、踝等环节的运动学参数,并对运动员动作技术的合理性作出诊断与评价,为抓举技术的理论与训练提供理论参考。通过研究抓举动作技术过程中杠铃重心的运动轨迹和速度以及身体各环节的运动特征,表明:1)通过研究杠铃和身体的垂直速度发现,运动员除李卓和唐功红杠铃垂直速度在引膝阶段存在下降趋势外,其他运动员均能在整个提铃过程保持上升趋势,技术较为合理;2)在抓举技术过程中,膝角和踝角随时间变化曲线呈现为双峰单谷型;髋角随时间变化曲线为持续增加趋势,呈单波峰。
|
| 关 键 词： | 抓举 杠铃 身体环节 诊断与评价 |
A Study on Athletic Features of Trunk and Lower Limb of Body when Trying Snatching Movement and Skills |
| |
| REN Jingping,WANG Huidi,YE Ming.A Study on Athletic Features of Trunk and Lower Limb of Body when Trying Snatching Movement and Skills[J].Journal of Capital College of Physical Education,2008,20(6). |
| |
| Authors: | REN Jingping WANG Huidi YE Ming |
| |
| Institution: | REN Jingping1,WANG Huidi2,YE Ming11.Capital Institute of Physical Education,Beijing 100088,China,2.Dept of P.E.,Binzhou University,Binzhou 256603,China |
| |
| Abstract: | By three-dimensional video and direct linear transformation(DLT) method,the kinematical parameters of the trunk and the lower limb of the body during snatch were obtained for Chinese elite female weightlifters and the rationality of athletes' movement and skills was diagnosed and evaluated,which have provided theoretic references for the research and training of snatch skills.Through studying the movement trajectory and movement velocity of the gravity of barbell center and the kinematical features of the trunk and the lower limb during their snatching movement,the following results are discovered.1)Barbell vertical velocity curves were obtained and two velocity peaks appeared in one of the curves(except Li Zhuo and Tang Gonghong),which means that the velocity of barbell decelerates in the transition phase and the technique should be improved.The other curve exhibits steadily-increasing behavior up to a maximum velocity.This means that skillful lifters could pull the barbell more smoothly during the transition phase without remarkable deceleration of the barbell.2)The knee angle increased to an initial maximum even before the lift-off of the barbell,followed by a pronounced bend at the knees until a minimum angle was reached(end of first pull).Then there was a clearly shorter intensive extension made up to the second and absolute maximum knee angle achieved(end of second pull).The changes in angle at the ankle were generally similar to those at the knee.The angle at the hip increased steadily over the two phases to a maximum. |
| |
| Keywords: | snatch barbell trunk and lower limb of body diagnosis and evaluation |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
|
