【作者】 程丽平；

【导师】 邰崇禧；

【作者基本信息】 苏州大学 ， 体育教育训练学， 2004， 硕士

【摘要】 分析与诊断青少年跳高技术对提高我国跳高的整体水平具有重要意义。选定进入江苏省青少年田径比赛男子甲组跳高决赛前6名运动员为研究对象，采用两台JVC9800高速摄像机以100fps的速度拍摄以及运用SIMI-motion录像解析系统进行图象解析。研究结果显示：(1)助跑后3步速度呈小-大-中的节奏；大部分运动员助跑最后1步步长、时间长于倒数第2步，最后1步起跳脚着地时身体重心垂直速度为正值，助跑最后两步身体重心波动较大，此助跑技术与速度节奏不利于起跳。(2)速度转换率较低，起跳时起跳脚着地瞬间小腿与地面夹角、着地时的髋角较大，髋、膝、踝的缓冲幅度较小，髋、膝、踝关节伸展都不充分，起跳时间较长，不利于保持助跑速度与起跳。(3)起跳过程中，大部分运动员摆动腿、摆臂分别采用屈腿型和双臂同时的摆动方式，摆动腿与两臂的摆动配合不协调，摆动腿摆动速度慢，摆动幅度较小，直接影响摆动效果。(4)起跳腿着地瞬间上体内倾不够，助跑最后1步腾空时间较长，影响人体充分蹬伸和起跳效果。更多还原

【Abstract】 It is most important meaning that the fosbury flop technique of the youth is analyzed and diagnosed to improve the whole level of our high-jump. To select six athletes who enter the male chia-group high-jump finals as my research object in the youth track and field events of Jiangsu province. To use two JVC9800 high-speed cameras took synchronism image in l00fps and analyzed the images in the SIMI-motion video analytical system. The results as follows: (1) the post-three-move run-up speed is small -large- middle rhythm, most of players have the longer last stride and longer time than the last second step, the vertical velocity of body’s center of gravity is positive when the take-off leg is touchdown during the last step, the ripple of body’s center of gravity is a little bigger during the last two steps. The run-up technique and velocity rhythm is detrimental to the take-off. ( 2 ) The velocity conversion factor is lower, the angle of the shank and groud and the hip angle is larger the instant of the take-off leg touchdown during the phase of take-off, the range of buffer of hip and knee and ankle is smaller, the ranger of stretch of hip and knee and ankle is not enough, the take-off time is longer. Those factors are harmful to remain run-up speed and take-off. (3) During take-off, the majority players’ swing leg and arms adopt respectively the swing way of the bent-leg and two arms swing simultaneously, the swing leg and arms are not match harmoniously, the speed of swing leg is slow and the range ofAbstractit is lower, Those affects directly the result of swing . (4) The toe-in angle of the upper body is not enough the instant of the take-off leg touchdown, the empty time is longer. Those factors influence the stretch of body and the result of take-off.更多还原