Kinematic Analysis on Takeoff Technique of Chinese Woman Elite Long Jumpers
LI Jian-ying
Abstract
LI Jian-ying
Abstract
Through making analysis on takeoff technique of top six jumpers in woman long jump final match in National Athletic Championship in may of 2004,and comparison with relevant kinematic parameter of world elite long jumpers,the author finds out that the Chinese long jumpers have good elasticity during the takeoff.Their stretch technique is well done,but the covering area of takeoff is irrational.The absolute velocity of run-up is relative low,while the vertical velocity and takeoff angle is close to world level.This shows that Chinese jumper's jump angle doesn't match the original jump velocity completely because of the large portion of vertical velocity in original velocity.The main reason is to pay more efforts on jump angle and neglect the role of horizontal velocity.jump angle that cannot match completely should be paid more attention to in training.
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Through making analysis on takeoff technique of top six jumpers in woman long jump final match in National Athletic Championship in may of 2004,and comparison with relevant kinematic parameter of world elite long jumpers,the author finds out that the Chinese long jumpers have good elasticity during the takeoff.Their stretch technique is well done,but the covering area of takeoff is irrational.The absolute velocity of run-up is relative low,while the vertical velocity and takeoff angle is close to world level.This shows that Chinese jumper's jump angle doesn't match the original jump velocity completely because of the large portion of vertical velocity in original velocity.The main reason is to pay more efforts on jump angle and neglect the role of horizontal velocity.jump angle that cannot match completely should be paid more attention to in training.
Key concepts: Takeoff, Kinematics, Jump, Jumper, Long jump, Countermovement, Vertical velocity, Mathematics