China's Elite Male High Jumpers Take-off Leg During The Swing Kinematics Technology Research

China's men's high jump was the advantages of our project, there have been two four times the world record. At present, China's men's high jump record or by Zhu Jianhua in 1983, created by 2.39m. After 27 years,2.39m flops. The face of this situation, we need to male high jumpers in China to make an analysis of technical detail in order to restrict our search for high jump technique high jump athlete "knot disease" for China's men's movement, once again the high jump take-off and provide a theoretical basis and practice.Fosbury Flop technique is by the run, the take-off, vacated, and landing four links in the chain structure, in which technology is the high jump takeoff technology, key technology, while the take-off technique is again, "tread stretch and swing," composed of technology, that is "Jump take-off power source is supported by a swinging leg take-off leg pedal effects and co-composed of stretching effect." In this study, based on previous studies, using three dimensional kinematic analysis method to the participants in October 2009 in Shandong Province, Jinan City, the eleventh meeting of the National Games in track and field competition in the first 11 athletes in the take-off in the process of swinging techniques resolution, aimed at China's elite male high jumpers in the take-off technology in the swing leg kinematics research techniques to explore the technology and the law of internal relations to find out our men's high jumpers in the swinging leg take-off technology technical problems, for further improve the take-off technology theory, to coaches, athletes training in the future to provide some reference. The results showed that:1. Fosbury flop swing leg swing in the take-off in the process of the hip axis is carried out swinging. Swing leg swinging way of "folding" and "squat-style" two.2. Fosbury's high jump take-off leg during the swing angle to the moment, touch the ground an instant take-off leg of the hip angle and the ground instantaneous horizontal velocity of the body center of gravity showed a significant correlation.3. Fosbury flop player swinging leg forward to the last step run-up to the moment to the hip angle and the angle and off angle, the body center of gravity Tengqi height, a special high jump competition results were very significant correlation.4. Fosbury's high jump take-off during take-off leg touched the ground instantaneous angle between thigh and the center of gravity Tengqi two vertical velocity, height of body center of gravity Tengqi there was a significant correlation with a correlation coefficient of 0.908-0.682.5. Fosbury Flop tread swinging leg during take-off from the ground an instant take-off leg ankle swinging leg take-off speed and the body center of gravity forward to the level of instantaneous speed, Teng initially faster there is a certain positive correlation between the correlation coefficients were 0.638 and 0.627.6. Chinese elite male high jumpers in the body center of gravity away from the swinging leg forward to place an average level of 0.67m. Swinging leg forward to horizontal velocity of the average instantaneous 7.68m/s, swinging leg at the maximum level when the buffer average speed of 7.01m/s, all athletes are different from the standard rate of decline.7. China's elite male high jumpers in the take-off leg during the swing pedal off the ground an instant, swinging leg knee angle averaged 141.9°; swinging leg at the pedal extension phase, maximum angular velocity of the knee and the ankle joints, respectively 474.3±132.6°/s and 761.0±158.7°/s.8. China's elite male high jumpers in the final step length, step length/height index values are lower than the world of elite athletes, but among them there are significant differences.9. Approach the last step angle and swing leg extensor leg off the ground when the swing leg swing speed, swing leg off the ground while the biggest swing speed has a high degree of correlation, correlation coefficients were 0.856 and 0.913.10. Back jump run-up last-step swing leg support phase is kicking off the start and launch a part of the takeoff of the first power source (driving force), kicking off leg support phase is the continuation and the end part of the take-off, is the second take-off power source (active power). Off the two together constitute the "power source", that is, back jump off the "double force."And against our men's high jump athlete's swing leg problems in technology, make recommendations accordingly.