시각장애(B2) 유도 선수들의 업어치기 동작에 대한 운동학적 분석

Abstract

This study is to analyze the kinematic variables about the skill of Seoi-nage in the yudo players at visually handicapped person(B2 class). For the matter, 5 players(age 23.5 2.88 years, height 173.0 2.16 cm, weight 69.2 12.3 kg) from the university team in the year 2003 were chosen as the subjects and four S-VHS video cameras set in 60frames/sec were used for recording Seoi-nage motions. Coordinated raw positions data through digitizing are smoothing by butterworth low-pass filtering method at a cut-off frequency 6.0Hz. and the direct linear transformation (DLT) method was employed to obtain 3-D position coordinates. The results were as follows;First, it showed a short time in Kuzushi, Tsukuri, Kake phase order at the elite players, but the usally handicapped players showed a short time in Kake, Tsukuri, Kuzushi phase order. Second, in the height change of the Center of Gravity (COG), It is appeared to many standard deviation between the subject, but showed the skill motions in more the height posture than the elites.Third, in the angle change to show the posture of body, It appeared to lower in the knee and hip joint angle than the elite player. Especially, in the trunk lean angle, it is appeared to increase the height change of the Center of Gravity (COG) because of a low change of degree in Tsukuri phase.