摘要
对我国优秀女子链球运动员的投掷技术进行运动生物力学研究,发现在加速节奏上普遍存在第1圈进旋转不积极现象,进旋转阶段器械的加速距离偏短,“早迎球、早放球”动作不充分;第3、4圈加速节奏不明显,第4圈和用力阶段对器械的加速距离和节奏有待进一步提高。训练中通过提高右脚着地的速度和发展专项速度素质能力,提高上肢舒展能力增加双支撑用力距离,克服左肩回撤现象,进一步缩短第4圈单支撑时间,增加最后用力的时间和鞭打用力幅度。
Using the methods of sports biomechanics analysis to the study about the throwing technology of China’s outstanding female hammer throwers, the study showed that: China’s players generally performed negative at the first round rotation when accelerating rhythm. The acceleration distance of the instrument was short when entering the rotation stage. Approaching and putting the ball too early, which led to inadequate action. The accelerating rhythm was not obvious on the third and the fourth laps. The accelerating distance and rhythm of the device on the forth and force stage needed to be further improved. By improving the speed of the right foot touchdown and developing of specific speed during training, the upper limb stretch ability is improved to increase the force distance between double supports, the phenomenon of left shoulder withdraw is overcome. To further shorten the time of single support on the fourth lap and increase the time of last exertion and the amplitude of whipping force.
作者
史东林
董海军
SHI Donglin;DONG Haijun(Hebei Sport University,Shijiazhuang 050041,China)
出处
《中国体育科技》
CSSCI
北大核心
2022年第4期33-39,共7页
China Sport Science and Technology
基金
国家体育总局科技服务项目(2016HT085)。
关键词
女子链球运动员
投掷技术
加速节奏
female hammer throwers
throwing technique
acceleration rhythm
