National Taiwai Normal University Graduate Institute of Physical Education an Abstract of Masters'''''''' Thesis

• Main Authors: Tue, Rey-Hung, 涂瑞洪
• Other Authors: Wang, Jin-Cherng
• Format: Others
• Language: zh-TW
• Published: 1997
• Online Access: http://ndltd.ncl.edu.tw/handle/42561374779760733505

碩士 === 國立臺灣師範大學 === 體育研究所 === 85 === 　　The purpose of this study was to establish a elastic model for investigating the reaction force of lower extremity during different length between COG to foot support point and different angle by COG and floor level in the static posture of tug-of-war. Subject was an elite tug-of-war player who was 21 years old, 170cm height, and 72Kg weight. 　　Assumed the lower extremity structure was an elastic structure. The length of the structure was regarded as the length between COG and foot support point, and the elastic force was regarded as the reaction force obtained by the force plate. The elastic model established by this study was "F=k(△L,θ)△L", in which k(△L,θ) was a function of elastic coefficient, F was the force plate reaction force, and θwas the angle of COG,△L was the changing length of COG. 　　The horizontal component of force obtained by the load cell and force plate were tested by the SEE, in order to judge whether the subject in an static balance condition which was able to be an standard of sampling. 　　The standard error of estimate of the reaction force value obtained between the experiment and the elastic model was 0.16Kg weight which was no more than 1%of mean reaction. Therefore, the elastic model established by this study could provide a good and high accuracy simulation of lower extremity''''''''s extension force to the static posture of tug-of -war.