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采用2台JVC9800高速摄影机,对我国6名优秀女子链球运动员的投掷技术进行拍摄和解析,并对投掷各阶段肩髋角、躯干倾角、肩链角、髋足角等进行运动学分析与比较。研究发现:运动员在投掷过程中肩髋角随旋转圈数增加而逐渐增大,躯干后倾角逐渐增大,最后用力阶段存在较明显的上体后仰现象;右脚着地瞬间髋足角普遍较小,肩链角的最大值出现在右脚着地之后,最小值出现在右脚着地之前,延长了单、双脚支撑阶段时间,使旋转速度节奏变慢。
Two JVC9800 high-speed cameras were used to shoot and analyze the throwing skills of 6 elite female chain-throwers in China. The shoulder hip angle, torso inclination angle, shoulder angle and hip angle were also analyzed and compared. The study found that: during the throwing process, the shoulder angle of the shoulder increased gradually with the increase of the number of turns, and the trunk posterior inclination increased gradually. At the last stage of exertion, there was obvious upper body backwards phenomenon; Small, shoulder the maximum angle of the shoulder appeared in the right foot to the ground, the minimum appears in the right foot before the ground, extending the single and double foot support phase of the time, slow down the pace of rotation.