Kinematics Features of Rotated Techniques of Chinese Outstanding Woman-Hammer Players
Xinkun Wang · 2005
This article analyzed the videos of the first six players'best achievements and got some kinematics data by using two Panasonic M9000 cameras shooting the woman-hammer finals of the Ninth Chinese Sports Meeting in 2001 on the spot.From the angle of kinematics,this article quantitatively analyzed the space-time charcteristics of rotated tehniques of Chinese outstanding woman-hammer players.The conclusions show that the hammer's velocity increment is low in the rotation process,and the hammer's velocity increment gradually decreases as rotating when the hammer's velocity increment reaches the maximum in the rotation process;in rotating,the timing of right foot's lift and drop existsearly lift and late drop,late lift and late droplate lift and early dropin rotating process,the included angle of shoulder-hip is wider than that of foot-hip when right foot dropping forms two feet standing,which gradually decreases as rotating.This is one of the reasons that make the ability of athletic continuous acceleration weak and the hammer's velocity increment decrease.