CAJ | 학술논문

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，并对投掷各阶段肩轴角、髋轴角、链球速度变化、髋膝踝角量的变化等进行运动学分析与比较。研究发现：研究对象在旋转过程中，肩轴角在右脚着地时呈现增大的趋势，右脚离地时则呈现减小的趋势；髋轴角在右脚着地、离地时均呈现增大的趋势；旋转中，链球每圈速度随旋转圈数增加而增加，但球速增量呈现随旋转圈数增加而递减；在双脚支撑阶段的髋角增幅过大，单脚支撑结束右脚落地时髋、膝角较大，右脚离地瞬间髋角增幅明显。
채용2태JVC9800고속섭영궤，대아국6명우수녀자련구운동원적투척기술진행박섭화해석，병대투척각계단견축각、관축각、련구속도변화、관슬과각량적변화등진행운동학분석여비교。연구발현：연구대상재선전과정중，견축각재우각착지시정현증대적추세，우각리지시칙정현감소적추세；관축각재우각착지、리지시균정현증대적추세；선전중，련구매권속도수선전권수증가이증가，단구속증량정현수선전권수증가이체감；재쌍각지탱계단적관각증폭과대，단각지탱결속우각락지시관、슬각교대，우각리지순간관각증폭명현。
Using 2 JVC9800 high-speed cameras, the present research recorded and analyzed the throwing technique of six female elite hammer throwers in China. The various stages and throwing shoulder axis angle,the hip axis angle,the speed of hammer, hip, knee and ankle angle changes are also analyzed from kinematic point of view. The results show that the shoulder axis angle of the subjects exhibits an increas- ing trend when the right foot is on the ground during rotation, while a decreasing trend when the right foot is off ground, that hip axis angle exhibits a increasing trend when the right foot is both on and off the ground, that the speed of the hammer increase with the increased number of rotations but the speed in- crease amount decreases with the increase in number of rotations, and that the hip angle increase is too large when both feet are in supporting position, while the hip, knee axis angles are comparative large when the right foot land at the end of the single-foot support, and there is significant increase in hip axis angle when the right foot is instantly off the ground.