Kinematic Analysis of male long jump at different times

• Main Authors: Ching-cheng Chen, 陳進志
• Other Authors: Chen-fu Huang
• Format: Others
• Language: zh-TW
• Published: 2001
• Online Access: http://ndltd.ncl.edu.tw/handle/65951212321864845583

碩士 === 國立臺灣師範大學 === 體育研究所 === 89 === The relationship between motion parameter of long jump and grade was investigated in this study. The results of the study could be useful to athletes and trainers to adjust the motions of long jump. The same squad of experimenters took the test of long jump at different times after training. The motions of the six experimenters were recorded by Peak high-speed camera with 120 HZ to analyze kinetics of the long jump. The experimenters are 23 years old, the average 176-centimeter height and the average 68-kilogram weight. All the tests were carried for three times. The two stages of initial two steps of approach and takeoff in the long jump were studied. We can make some conclusions as shown in below, 1.The experimenters with less variation on horizontal velocity got the higher grade. 2.The “Horizontal velocity of C.G.” and the “Vertical velocity of C.G.” are the most important two parameters for long jump. The experimenters had scope to improve in this study. 3.The experimenters showed slow angular velocity on hock that resulted from the weak pushing on feet. 4.The experimenters with more variation on height of body fulcrum in the stage of approach got the higher grade. 5.The higher grade can be got with the bigger angle of C.G. at takeoff. The other researchers suggested the Horizontal velocity of C. G. was the most important parameter for long jump. However, in this study, the Vertical velocity of C.G. and the variation on height of body fulcrum at takeoff showed more impact. The difference may be caused from the difference on velocity and brawn of the experimenters.