본 연구의 목적은 유도 경력이 2년(2~3단) 이상인 유단자 5명을 대상으로 전방낙법 동작시 3차원 영상분석법을 이용하여 운동학적 변인의 특성을 규명하는데 그 목적이 있다. 운동학적 변인은 시간·자세·중섬·거리 변인들이었으며, 각 변인별 평균치와 표준편차를 구하여 유도 전방 낙법 동작의 운동학적 변인을 분석한 결과 다음과 같은 결론을 얻었다. 1. 결론 1)...
본 연구의 목적은 유도 경력이 2년(2~3단) 이상인 유단자 5명을 대상으로 전방낙법 동작시 3차원 영상분석법을 이용하여 운동학적 변인의 특성을 규명하는데 그 목적이 있다. 운동학적 변인은 시간·자세·중섬·거리 변인들이었으며, 각 변인별 평균치와 표준편차를 구하여 유도 전방 낙법 동작의 운동학적 변인을 분석한 결과 다음과 같은 결론을 얻었다. 1. 결론 1) 시간변인 전방낙법 동작시 전체소요시간은 평균 1.36±0.17초이었으며, 국면별로는 제3 낙법국면(0.60초:44%)이 가장 길었고, 다음은 제1 도약국면(0.43 초:32%), 제2 공중국면(0.32초:24%) 순이었으며, 낙법시 매트에 닿는 신체부위는 발끝-손바닥-팔꿈치 순으로 충격을 완화시켰다. 2) 자세변인 전방낙법 동작시 손목각은 낙법직전자세에서 낙법자세까지는 신전되었고, 낙법자세에서 낙법직후자세까지는 굴곡되는 패턴을 보였으며 손목의 좌·우각은 변위차이를 보였다. 팔꿈치각은 준비자세에서 낙법직후자세까지 굴곡되는 패턴이었고, 발목각은 준비자세에서 반동자세까지는 굴곡되었으며 점핑자세에서 변환자세까지 신전, 낙법직전자세와 낙법직후자세에서는 굴곡 패턴이었다. 3) 중심변인 상·하 중심 변위는 낙법직전자세에서 매트로부터 평균 32.1cm, 낙법직후 자세에서는 평균 19.8cm 높이에 위치하였다. 4) 거리변인 매트와 어깨와의 거리(높이)는 낙법직전자세에서 33.1-32.2cm, 낙법자세에서는 19.2~18.3cm, 낙법직후자세에서 21.8-20.5cm 이었다. 매트와 엉덩이와의 거리(높이)는 낙법직전자세에서 47.5~48.0cm, 낙법자세에서는 22.6~23.4cm, 낙법직후자세에서 30.1~30.6cm이었다.
본 연구의 목적은 유도 경력이 2년(2~3단) 이상인 유단자 5명을 대상으로 전방낙법 동작시 3차원 영상분석법을 이용하여 운동학적 변인의 특성을 규명하는데 그 목적이 있다. 운동학적 변인은 시간·자세·중섬·거리 변인들이었으며, 각 변인별 평균치와 표준편차를 구하여 유도 전방 낙법 동작의 운동학적 변인을 분석한 결과 다음과 같은 결론을 얻었다. 1. 결론 1) 시간변인 전방낙법 동작시 전체소요시간은 평균 1.36±0.17초이었으며, 국면별로는 제3 낙법국면(0.60초:44%)이 가장 길었고, 다음은 제1 도약국면(0.43 초:32%), 제2 공중국면(0.32초:24%) 순이었으며, 낙법시 매트에 닿는 신체부위는 발끝-손바닥-팔꿈치 순으로 충격을 완화시켰다. 2) 자세변인 전방낙법 동작시 손목각은 낙법직전자세에서 낙법자세까지는 신전되었고, 낙법자세에서 낙법직후자세까지는 굴곡되는 패턴을 보였으며 손목의 좌·우각은 변위차이를 보였다. 팔꿈치각은 준비자세에서 낙법직후자세까지 굴곡되는 패턴이었고, 발목각은 준비자세에서 반동자세까지는 굴곡되었으며 점핑자세에서 변환자세까지 신전, 낙법직전자세와 낙법직후자세에서는 굴곡 패턴이었다. 3) 중심변인 상·하 중심 변위는 낙법직전자세에서 매트로부터 평균 32.1cm, 낙법직후 자세에서는 평균 19.8cm 높이에 위치하였다. 4) 거리변인 매트와 어깨와의 거리(높이)는 낙법직전자세에서 33.1-32.2cm, 낙법자세에서는 19.2~18.3cm, 낙법직후자세에서 21.8-20.5cm 이었다. 매트와 엉덩이와의 거리(높이)는 낙법직전자세에서 47.5~48.0cm, 낙법자세에서는 22.6~23.4cm, 낙법직후자세에서 30.1~30.6cm이었다.
The purpose of this study was to analyze kinematic variables of a Mae-ukemi (front breakfall) motion through three-dimensional image analysis with five rank-holders with over 2 years' career (the second or third rank) in judo in order to find out its kinematic features. The kinematic variables inclu...
The purpose of this study was to analyze kinematic variables of a Mae-ukemi (front breakfall) motion through three-dimensional image analysis with five rank-holders with over 2 years' career (the second or third rank) in judo in order to find out its kinematic features. The kinematic variables include temporal, posture, center of gravity, and distance variables the mean values and the standard deviations for each variable were obtained to analyze kinematic variables of a Mae-ukemi in judo. From the data analysis and discussion, the following conclusions were drawn 1) Temporal variables : The total time elapsed (TE) for a Mae-ukemi (front breakfall) was 1.36?.17 seconds on the average: TE during the 3rd ukemi phase was the longest (0.60 sec: 44%), followed by that during the 1st jumping phase (0.43 sec: 32%) and that during the 2nd aerial phase (0.32 sec: 24%) in order. Among the bodily regions touching the mat during a fall, the shocks were alleviated in feet, hands, and elbows in order. 2) Posture variables : The angles of wrists during RBU position were extended from the just before UP position and flexed from in the RAU position, and there was a difference in the displacement between the angles of the right and left wrists. The angles of elbows were flexed in the ready position from in the RAU position. The angles of ankles were flexed from the ready position to that of reaction, extended from the jumping position to the changing, and flexed both in the posture just before RAU position and in that just in the RAU position. 3) Center of Gravity variables : The up-and-down central movement displacement was located at the height of 32.1cm from the mat in the RBU position and at 19.8 cm on the average in the RAU position. 4) Distance Variables : The distance height between the mat and shoulders in the RBU position (33.1--32.2cm) to in the UP position (19.2-- 18.3cm) and in the RAU position (21.8-20.5cm). while that height between the mat and hips in the RBU position (47.5 48.Ocm) to in the UP position (22.6-23.4cm), and in the RAU position (30.1--30.6cm).
The purpose of this study was to analyze kinematic variables of a Mae-ukemi (front breakfall) motion through three-dimensional image analysis with five rank-holders with over 2 years' career (the second or third rank) in judo in order to find out its kinematic features. The kinematic variables include temporal, posture, center of gravity, and distance variables the mean values and the standard deviations for each variable were obtained to analyze kinematic variables of a Mae-ukemi in judo. From the data analysis and discussion, the following conclusions were drawn 1) Temporal variables : The total time elapsed (TE) for a Mae-ukemi (front breakfall) was 1.36?.17 seconds on the average: TE during the 3rd ukemi phase was the longest (0.60 sec: 44%), followed by that during the 1st jumping phase (0.43 sec: 32%) and that during the 2nd aerial phase (0.32 sec: 24%) in order. Among the bodily regions touching the mat during a fall, the shocks were alleviated in feet, hands, and elbows in order. 2) Posture variables : The angles of wrists during RBU position were extended from the just before UP position and flexed from in the RAU position, and there was a difference in the displacement between the angles of the right and left wrists. The angles of elbows were flexed in the ready position from in the RAU position. The angles of ankles were flexed from the ready position to that of reaction, extended from the jumping position to the changing, and flexed both in the posture just before RAU position and in that just in the RAU position. 3) Center of Gravity variables : The up-and-down central movement displacement was located at the height of 32.1cm from the mat in the RBU position and at 19.8 cm on the average in the RAU position. 4) Distance Variables : The distance height between the mat and shoulders in the RBU position (33.1--32.2cm) to in the UP position (19.2-- 18.3cm) and in the RAU position (21.8-20.5cm). while that height between the mat and hips in the RBU position (47.5 48.Ocm) to in the UP position (22.6-23.4cm), and in the RAU position (30.1--30.6cm).
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