Analysis On Kinematic Parameters Of The Jump-up Technique Of Excellent Male Long Jumpers In China

Takeoff technique is the core of long jump technique. This article makes these first 8 athletes which participated in the Nanjing NO.10 national sports-meeting male long jump finals on October 18.2005 the research object. Analysis on the athlete shape targets, the age characteristics and the takeoff-leg parameters through the research by taking photos, research by film analysis, research by data statistics. By comparing with the world top athletes, try to seek the reasonable and unreasonable takeoff techniques of our countr man long jump athlete. So we can find the inner rules of the various technical parameters and the solutions in the teaching and training about takeoff in the long jump, in order to provide some reference to our man long jump athletes to get the most superior takeoff techniques combination. We discovered in the research that:1. Our athletes have obvious differences in person body shape with the world top long jumpers that we have higher and heavier body which reflecting the muscle absolute strength weakness. We get the unreasonable present situation on the training system of our country that our athletes achieve the highest result in smaller age and last for short years ,meaning a big disparity with the world top athletes.2. The jumping posture choice is one of the reasons that jump angles of our athletes have obvious differences with the world top athletes.3. We do not have remarkable difference in takeoff time with the world top athletes, but the relative longer cushion time and shorter time used in transformation and the pedal have reflected that we have excessively high approach useing rate, insufficiency speed reserve and bad leg strength.4. Our athletes are faster in level speed at takeoff instant and slower in the vertical leap speed compared to the average number of foreign top athletes. The reason is not only we blindly pursues the level leap speed but also the athletes have shorter transformation takeoff time which make the increase and transformation of the vertical speed not enough. 5. Our athletes have remarkable difference angle of knee of takeoff-leg with the world people lacking legs strength. But it is unfit to make a takesoff appraisal with angle of knee of takeoff-leg. It should be a technical condition synthesitic appraisal including individual body and technique condition.This participative contestant displays averagely in the competition with no one above 8 meters and the averager 7.75 meters, meaning still the low condition. The author believe in view of situation that we must maste not only technical and physical ability training but also skill training about psychology, more importantly, the selection and the entire training process is scientific or not, and study the foreign advanced experience. For we already had many learning from another's mistakes, discover the the counter measure as soon as possible is the key to solve questions.