The kinematic analysis of Tsukahara stretch 2 1/2 ofmale vaulting—A case study for Yung —His —Lin

• Main Authors: Mei-Chung Liang, 梁梅宗
• Other Authors: Yi-Li Chen
• Format: Others
• Language: zh-TW
• Published: 2003
• Online Access: http://ndltd.ncl.edu.tw/handle/92076048836645278110

碩士 === 國立臺灣體育學院 === 體育研究所 === 91 === ABSTRACT 　　The purpose of this study was to discuss the kinematic analysis of Tsukahara stretch 2 1/2 of male vaulting. The subject was Yung-His-Lin.Two redlake high speed video cameras at 250 Hz and one LDM300 high frequence speed testing machine (100Hz) used to record the performance,then used Acqknowledge software to do some kinematic parameters analysis of approach and Winanalysis 3 dimention visualization digitized software to do blocking and postflight movement analysis.The result was as the follows : 1.The max velocity of approach was 9.27m/s. 2.Boarding velocity was 8.52m/s. 3.Preflight take off vertical velocity was 4.04m/s and horizontal velocity was 7.5m/s;ankle velocity was 7.23m/s ;hip angle was 178 degrees. 4.The horse contacting angle was 37 degrees ;horse departing angle was 64 degrees ;horse contacting horizontal velocity of center of mass(CM) was 4.82m/s ;vertical velocity was 3.45m/s . 5.The height of horse departing was 0.63m;blocking time was 0.19 secs. 6.The mean cross axle angular velocity of CM at postflight was 7.72rad/s. 7. The mean vertical axle angular velocity of CM at postflight was 16.7rad/s. 8.The max height of postflight was 2.93m;timewas 1.06 secs. 9.The angle of trunk and thigh was 136.3 drgrees at landing phrase ;the thihg and shank was 108.5 degrees ;horizontal velocity was 3.12m/s;vertical velocity was 4.87m/s;angle of landing phrase was 68.8 degrees . The result indicated the following:the subject should have faster velocity at approach and boarding ;longer postflight time;higher postflight height ;better twisting technic and stable landing technic.The gymnast should combine the basic ability and then he can perform the better Tsukahara stretch 2 1/2..