Kinematic analysis of triple jump techniques of women triple jumpers in the 11~(th) National Games
The authors studied kinematic parameters relating to triple jump techniques of top 8 triple jumpers par-ticipating in women triple jump final in track and field competition in the 11th National Games,and revealed the following findings: women triple jumpers in China had a poor absolute run-up speed and a poor take-off speed utilization rate,which were respectively 8.96 m/s and 95.5%,significantly different from 9.41 m/s and 98.2% achieved by world triple jumpers(P0.01);at the moment the take-off leg lands and takes off,their body center of gravity had a poor horizontal speed,which was only 8.71 m/s,very significantly different from world 9.33 m/s(P0.01);during hopping and striding,their body center of gravity had appropriate lift-off angles,which were re-spectively(17.19±4.37)° and(15.07±4.12)°,but at the last leap,their body center of gravity had a too big lift-off angle,which was(23.57±4.12)°,bigger than 16°~20° achieved by world triple jumpers;their triple jump duration was relatively long,and their take-off effect was not ideal.