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타구 방향 및 스텝 방법에 따른 필드하키 페널티 스트로크 동작 분석
우상연 ( Sang Yeon Woo ),최기수 ( Ki Soo Choi ),김호묵 ( Ho Mook Kim ) 한국스포츠리서치 2007 한국 스포츠 리서치 Vol.18 No.4
The purpose of the study was to establish and compare kinematic data of field hocky penalty stroke motion according to stroke direction and step type. Eight elite players participated in this study. The 3D kinematic data were collected for each subject performing of penalty stroke for 2 type step(1 step, 2 step) and 4 type shooting direction(left low, left high, right low, right high). The results on the basis of this research is as follows: 1) the motion time, step length, knee angle variation and velocity of whole body center of mass were larger in two step than in one step, 2) side length of ball -support foot, pelvis rotation angle and shoulder rotation angle were larger in left side attacks than in right side attacks, 3) knee joint angle, maximum linear velocity of hand, and maximum linear velocity of stick head were larger in right side attacks tan in left side attacks. From these it could be concluded that kinematic parameter of penalty stroke motion is more different in stroke direction than in step type.
2011 대구세계육상선수권대회 남자 세단뛰기 경기의 운동학적 분석
우상연 ( Sang Yeon Woo ),서정석 ( Jung Suk Seo ),김호묵 ( Ho Mook Kim ),김용운 ( Yong Woon Kim ),최성범 ( Sung Bum Choi ),남기정 ( Ki Jeong Nam ) 한국운동역학회 2011 한국운동역학회지 Vol.21 No.5
The purpose of this study was to analyze the kinematics of the men`s triple jump at the 2011 Daegu World Championships by comparing the results to those at the 2009 Berlin World Championships. The kinematic data were gathered from two steps before take off to the landing using a seven panorama system, and these data were divided into 3 phases for 8 participants. The average jump for the finalists was longer in the Daegu championships (17.46 m) than in the Berlin championships (17.28 m). The longest jump record was increased by 23 cm. The step was the longest at 36% of the total distance, followed by the hop at 30% and the jump at 34%. The first and third phases were substantially longer than the second phase (the step). The horizontal speed at take-off increased in the order hop, step, and jump. Overall, in comparison with the results from Berlin, the horizontal velocity increased, the vertical velocity decreased, and the landing angle decreased.
2011 대구세계육상선수권대회 여자 세단뛰기 경기의 운동학적 분석
우상연 ( Sang Yeon Woo ),서정석 ( Jung Suk Seo ),김호묵 ( Ho Mook Kim ),남기정 ( Yong Woon Kim ),최성범 ( Sung Bum Choi ),김용운 ( Ki Jeong Nam ) 한국운동역학회 2011 한국운동역학회지 Vol.21 No.5
The purpose of this study was to analyze the kinematics of the women`s triple jump event at the 2011 Daegu World aChmpionships by comparing them to those of the 2009 Berlin World Championships. The kinematic data were gathered from two steps before take off to the landing using a 7-camera panorama system. The data were then divided into 3 phases for each of the 8 participants. Similar average results were found the final contestants in the Daegu and Berlin championships, 14.58 m and 14.51 m, respectively. The first step had a relatively short length percentage (29%) compared to the hop and jump (36% and 35%, respectively). At the take off, the horizontal velocity was the lowest for the step, followed by the hop and jump. These results were different from the results for the men, who had an order of hop, step, and jump. Overall, in a comparison of the Daegu and Berlin participants, the vertical speed at take off for the three events was reduced compared to the horizontal speed.
우상연(Woo, Sang-Yeon),김호묵(Kim, Ho-Mook),서정석(Seo, Jung-Suk),심윤식(Shim, Yun-Sik),김진영(Kim, Jin-Young) 한국웰니스학회 2017 한국웰니스학회지 Vol.12 No.1
본 연구는 볼링의 스트레이트, 숏훅, 커브의 구질에 대한 상지관절의 운동역학적 변인의 특성을 규명하고자 하였다. 이를 위해 대학교 엘리트 선수 6명을 대상으로 스트레이트, 숏훅, 커브 3개의 동작을 실시하였고 각 동작들은 영상분석 및 근전도를 통하여 분석을 하였다. 각 구질마다 운동학적 및 근활동 변인의 통계적 차이를 위하여 일원반복분산분석을 실시하였다(p<.05). 위와 같은 방법을 통해 도출된 결과는 다음과 같다; 1) 투구하는 오른손의 수직 이동변인은 숏훅과 커브볼이 스트레이트에 비해 크게 나타났다. 2) 오른 팔꿈치 각속도는 릴리즈 국면에서 스트레이트가 숏훅과 커브에 비해 빠르게 나타났다. 3) 이두근은 4구간과 5구간에서 다른 근육보다 더 큰 근활성을 보였으며, 삼두근은 3구간에서 다른 근육들에 비해서 근활성이 더 크게 나타났다. This study was conducted to identify the biomechanical variables characteristics of upper extremity on the types of bowling such as straight, short hook, curve. To achieve this, image analysis and EMG analysis were conducted for 6 professional players of university to perform 3 times movements as straight, short hook and curve. In order to find the statistical difference of kinematic and muscle activity variables of throwing movements as straight, short hook and curve, a repeated one-way analysis of variance was conducted(p<.05). The results derived through such experiments were as follows; 1) Vertical displacement of throwing right hand for short hook and curve was bigger than that for straight. 2) Throwing right elbow angular velocity for straight was faster than for short hook and curve on angular velocity at release event. 3) Biceps muscle was revealed with considerably huge force compared with the other muscles during 4 and 5 phase. Triceps muscle was revealed with considerably huge force compared with the other muscles during 3 phase.
프로 골프 선수의 짧은 어프로치 동작 시 목표 거리에 따른 신체 중심 이동 변화
우상연(Sang Yeon Woo),김호묵(Ho Mook Kim),서성혁(Sung Hyeok Suh) 한국사회체육학회 2008 한국사회체육학회지 Vol.0 No.34
The purpose of this study was to provide the basic coaching data to improve the performance ability through the analysis of changing the center of body gravity by the target distance of short approach shots in golf. In this study, the subjects chosen were 5 skilled subjects, who were allowed to shoot 10 rounds of shots at target distances of 1 m, 2 m, 4 m, and 8 m. To collect the ground reaction force, two AMTI force platforms, were used. In order to verify the statistical significance of the kinetic factors followed by the results of different target distances, we used the one-way ANOVA with repeated measure. The results obtained were as follows: 1) in address event, increasing by the target distance the center of gravity moved the left side, 2) in backswing event, the center of gravity tended to move the right side, 3) in impact event, the center of gravity especially in 8m approach shot moved the right side, and, 4) Z force in the backswing event tended to move the right side and Z force in the impact event moved the forward direction. 5) In the target distance of 8 m, Y force was larger in the backswing and impact event.
2011 대구세계육상선수권대회 남자 멀리뛰기 경기의 운동학적 분석
서정석 ( Jung Suk Seo ),우상연 ( Sang Yeon Woo ),김용운 ( Yong Woon Kim ),남기정 ( Ki Jeong Nam ),박용현 ( Young Hyun Park ),김호묵 ( Ho Mook Kim ) 한국운동역학회 2011 한국운동역학회지 Vol.21 No.5
The long jump motion of 8 finalist of men`s long jump of IAAF World Championships Daegu 2011 were analysed and the kinematic characteristics of the technique were investigated. The kinematic characteristics of long jump motion of 8 finalist were as follows. In the run-up phase, the average length of 3, 2, and 1 stride were 2.21±0.08 m, 2.46±0.18 m, and 2.19±0.16 m, respectively. The change in the height of the center of gravity was 0.09 ± 0.02 m. The average velocity of 3, 2, and 1 stride was 10.37±0.32 m/s, 9.63±0.32 m/s, and 10.69±10.69 m/s, respectively. In the take-off phase, the horizontal velocity, the vertical velocity, the reduction of horizontal velocity was 9.00±0.37 m/s, 3.04±0.27 m/s, and 1.69±0.34 m/s, respectively. The minimum knee angle and the take off angle was 157±6.57° and 18.5±2.24°, respectively. In the flight phase, the flight time and the maximum height of the center of gravity was 0.82±0.05 s, and 1.70±0.10 m, respectively. In the landing phase, the landing length was 0.51±0.06 m. The body angle, the knee angle, and the hip angle was 71±20.93°, 136±19.19°, and 85±9.58°, respectively. The kinematic characteristics of long jump motion with good record were shown as follows, The reduction of the horizontal velocity in the take-off phase was minimized while the velocity of the run-up were maximally maintained, The vertical velocity in the take-off phase was increased with rapidly extended knee and the high center of gravity.
2011 대구세계육상선수권대회 여자 멀리뛰기 경기의 운동학적 분석
김호묵 ( Ho Mook Kim ),우상연 ( Sang Yeon Woo ),김용운 ( Yong Woon Kim ),남기정 ( Ki Jeong Nam ),박용현 ( Yong Hyun Park ),서정석 ( Jung Suk Seo ) 한국운동역학회 2011 한국운동역학회지 Vol.21 No.5
The long jump motions of 8 finalists in the women`s long jump at the IAAF World Championships, Daegu 2011 were analyzed, and the kinematic characteristics of their techniques were investigated. The kinematic characteristics of the long jump motion of the 8 finalists were as follows. In the run-up phase, the length of the 2 stride was 108 ± 6.92% that of the 3 stride. The length of the 1 stride was 91 ± 5.78% that of the 2 stride. The change in the height of the center of gravity was 0.07 ± 0.03 m. The maximum velocity during the run-up phase was 9.44 ± 0.13 m at the 1 stride. In the take-off phase, the horizontal velocity, vertical velocity, reduction in horizontal velocity were 7.80 ± 0.15 m/s, 2.96 ± 0.14 m/s, and 1.64 ± 0.19 m/s, respectively. The minimum knee angle and take-off angle were 151 ± 8.89° and 20.7 ± 1.03°, respectively. In the flight phase, the flight time and maximum height of the center of gravity were 0.78 ± 0.03 s, and 1.60±0.05 m, respectively. In the landing phase, the landing length was 0.50 ± 0.07 m. The trunk angle, knee angle, and hip angle were 74 ± 18.75°, 131 ± 10.45°, and 82 ± 9.03°, respectively. The kinematic characteristics of the motion of a good long jump were as follows. The reduction in the horizontal velocity in the take-off phase was minimized, and the maximum velocity of the run-up was maintained. The vertical velocity in the take-off phase was increased using a rapidly extended knee and high center of gravity.