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Men’s Long Jump at the Present Stage of Some Chinese Elite Athletes, Kinematic Analysis of Take-off Technique

Author: KangHongZhe
Tutor: FanQinHai
School: Hebei Normal
Course: Physical Education and Training
Keywords: At the present stage Men's Long Jump Off Technique Kinematics
CLC: G823.3
Type: Master's thesis
Year: 2009
Downloads: 89
Quote: 0
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Abstract


The long jump is one to rely on speed, forces combine together to complete the technical class jumping projects. Necessary for the protection of off Technique them in the process to complete the long jump, the long jump technology is the key to determine results good or bad, but also athletes to create outstanding athletic performance. In this paper, to be held in October 2008, the National Track and Field Championships (Shijiazhuang Railway Station) in the men's long jump competition results top eight athletes as the research object, through the use of literature, interviews, filming, image analysis method and mathematical statistics method study morphological indicators, take-off, instant landing angle, pedal angle fan angle, as well as take-off stage of take-off leg, ankle, knee, hip angle with foreign elite athletes were compared. In addition, through study Jumping horizontal velocity and vertical velocity dynamics indicators to study, explore current kinematic characteristics of the men's long jump off Technique. Draw the following conclusions: the view at this stage of the long jump elite athletes from the body shape, height and overall low, there are very significant differences between elite athletes and foreign, relatively light weight, body muscle plumpness far less foreign elite athletes in the physical condition of foreign athletes occupy a considerable advantage. 2 eight research object in with the board take off the moment the Lie angle and fan angle with foreign athletes exist very significantly with sex differences (P <0.01), and our long jump athletes stomp angle compared with the foreign players also have significant differences (P <0.05), compared with the theoretical ideal angle, there is a great distance. Long the 3 pedal takeoff buffer stage time, take-off instant body projection point of the center of gravity far, our athletes take off instantly ankle angle affect our athletes support fast kicking Jump factors enhance the take-off leg strength to help improve the long jump results and knee angle is small, in eight subjects Su Xiongfeng ankle angle up to 124.19 ° knee angle is the Tang Gongchen to 166.43 °, compared to the world's athletes need to further improve, increase ankle knee angle conducive to the creation of good results; closer to our athletes take-off stage hip angle with the world's elite athletes. Our long jump elite athletes' Jumping the horizontal velocity is higher than the foreign players, but the Jumping the vertical speed but there are differences with foreign athletes, too much emphasis on the horizontal velocity and vertical velocity ignored.

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CLC: > Culture, science,education, sports > Sports > Athletics > Jump > Long jump
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