• 한국운동역학회지
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• 제19권3호
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• pp.481-488
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• 2009

본 연구는 스쿱 동작 시 남자 우수하키 선수들의 동작 특성을 구명하고 경기력 향상을 위한 기초자료를 제공하는데 그 목적이 있다. 이를 위해 8명의 남자 대학 학키 선수들을 두 집단(우수집단 Vs. 비우수집단)으로 구분하여 스쿱 동작을 3차원 동작분석을 이용하여 운동학적 변인을 산출하고 비교분석한 결과 다음과 같은 결론을 얻었다. 첫째, 우수그룹이 비우수 그룹에 비하여 전방으로의 무게중심 이동변화가 크고 속도도 다소 빠른 것으로 나타났으나 통계적으로 유의한 차이는 없는 것으로 나타났다 (p>.05). 둘째, 스틱헤드의 전방 선속도가 우수그룹이 빠른 것으로 나타났으나 통계적으로 유의한 차이는 없는 것으로 나타났다 (p>.05). 그러나 스틱의 수직 선속도는 통계적으로 차이가 있는 것으로 나타나 (p<.05) 비우수 그룹이 우수그룹에 비하여 공을 띄우는 기술이 부족한 것으로 판단된다. 셋째, 우수그룹이 비우수 그룹에 비하여 릴리즈 시 스틱을 강하게 내전시키며 공을 투사하는 것으로 나타났으며, 두 그룹간 통계적으로 유의한 차이가 있는 것으로 나타났다 (p<.05).넷째, 우수그룹이 비우수 그룹에 비하여 릴리즈 시 상체의 강한 내회전력을 이용하여 볼을 투사시키는 것으로 나타났다 (p>.05).

• 한국운동역학회지
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• 제16권2호
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• pp.153-163
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• 2006

The purpose of this research was to analyze kinematic variables that appear during the instep shooting motion of female high school soccer players according to the angle of approach to find effective shooting motions. For this experiment, 5 female high school soccer players from the K city were participated in this study as the subject group, and as a through comparison and analysis of the resulting numbers of the variables, we came to the following conclusions. 1) Stride length and stride length/lower extremity length increased as the angle of approach increased. 2) As for C.O.G movement displacement, it was highest at an approach angle of $90^{\circ}$ during Right Foot Contact, at $135^{\circ}$ during Left Foot Contact, at $0^{\circ}$ during Rigth Toe Top, at $45^{\circ}$ during Impact, and at $0^{\circ}$ during Follow through. 3) The time required for each phase was longest at APP and shortest at BSP. The time required increased a little as the angle of approach increased, and the total time required also increased as the angle of approach increased. 4) The angle of the ankle joint was largest at an approach angle of $45^{\circ}$ for all events except Right Foot Contact. 5) The angle of the knee joint was largest at an approach angle of $135^{\circ}$ during Right Foot Contact, at $0^{\circ}$ during Left Foot Contact, at $45^{\circ}$ during Right Toe Top, at $135^{\circ}$ during Impact, and at $90^{\circ}$ during Follow through. 6) The angle of the hip joint was largest at an approach angle of $90^{\circ}$ during Right Foot Contact, at$0^{\circ}$ during Left Foot Contact, at $0^{\circ}$ during Right Toe Top, at $90^{\circ}$ during Impact, and at $0^{\circ}$ during Follow through.

• 한국운동역학회지
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• 제13권2호
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• pp.49-63
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• 2003

For this study, four male university Taekwondo players were randomly chosen, between the weight categories of 60Kg and 80Kg. Their side kicks (yeop chagi), which are part of foot techniques, were kinematically analyzed in terms of the time, angle, and angular velocity factors involved with the kicks through the three-dimensional imaging. The results of the analysis are as fellows. 1. Time factor The first phase(preparation) was 0.48sec on average, accounting for 60% of the entire time spent; the second phase(the minimum angle of the knee joint) was 0.21sec on average, taking up 26% of the whole time spent; and the third phase(hitting) was 0.11sec on average, representing 14% of the entire time spent. 2. Angle factor In the first phase(preparation), rotating their bodies along the long axis, the players bended their hip and knee joints a lot, by moving fast in the vertical and horizontal directions, in the second phase(the minimum angle of the knee joint), the players continued to extend their bodies along the vertical axis, while pronating their lower legs and bending their hip and knee joints a lot to reduce the radius of gyration, and in the third phase(hitting), they extended their knee joints greatly so that the angle movements of their lower bodies shifted to circle movements. 3. Angular velocity factor In the first phase(preparation), the angular velocity of the hip and knee joints increased. while moving horizontally and rotating the body along the long axis; in the second phase(the minimum angle of the knee joint), the angular velocity increased by bending the hip and knee joints fast to reduce the rotation radios; and in the third phase(hitting), the angular velocity was found to have increased, by rotating the body along the long axis to increase the angular velocity and shifting the angular momentum of the pronated knee joint to the circular momentum.

• 한국운동역학회지
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• 제29권3호
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• pp.129-135
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• 2019

Objective: The purpose of this study is to present the scientific and quantitative data by finding the common points and differences of the side-kick according to the height change through the difference of the side kick motion performance according to the three target height changes and the function of the lower limbs muscle in side kick motion of Taekwondo Poomsae. Method: For this, total 14 players were selected who were registered in Korea Taekwondo Association and skilled group 7 players who had a medal from national competition and 7 players who did not have Taekwondo experience from department of physics. 4 video cameras to the feature on side kick per target height, and the subjects' support foot was located on the ground reactor and the practice was conducted 3 times: waist, chest, and head as the target height. the basic materials were collected by using Kwon 3D XP program and the T-test was conducted to verify the statistic difference between groups (SPSS 24.0). At this time, the statistics significance level was set as .05 and the following conclusion was obtained. Results: The lower the proficiency and the higher the height, the more the joint coordination between the hip and the knee. Conclusion: Summary of the result shows a common point that the change of target's height makes the lower the proficiency and the higher the height, the more the joint coordination between the hip and the knee. Also, the higher the target's height became, the greater angular momentum of thighs, shanks, foot became in common.

• 한국응용과학기술학회지
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• 제38권6호
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• pp.1606-1615
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• 2021

본 연구에서는 남자 실업팀 핸드볼 선수들을 대상으로 플라이휠 운동을 적용한 웨이트 트레이닝 프로그램을 개발하여 상해예방과 경기력 향상을 위한 기초자료를 제공하는데 그 목적이 있다. 12주간 복합 플라이휠 운동 프로그램을 적용하여 신체조성, 체력요인, 무산소성파워, 등속성근기능에 미치는 영향을 분석한 결과는 다음과 같다. 팔굽혀펴기는 그룹 간 유의한 차이가 나타났다. 체지방률, 무산소성 파워는 시기별 상호작용에서 유의한 차이가 나타났다. 제자리멀리뛰기, 제자리높이뛰기, 악력, 배근력, 무산소성평균파워 그리고 등속성근기능검사는 좌굴근과 우굴근에서 시기별로 유의한 차이가 나타났다. 따라서 12주간 플라이휠 운동을 활용한 웨이트 트레이닝 결과는 상해예방과 경기력 향상을 위한 기초자료로 제공할 수 있을 것으로 판단된다.

• 운동영양학회지
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• 제13권2호
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• pp.123-130
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• 2009

The purpose of this study was to provide the basic information on nutritional condition for improving performance of the national junior rowing team players(male n=17, female n=14). To attain this purpose, their body composition and energy intake situations were investigated during their three-week winter training camp. Measurement of body composition measured by the interval, and two days, and dietary intake in this study to investigate the type and amount of food, the researchers measured directly, and then refer to the record subjects to investigate the dietary intake and the adoption of a Weighing Method. The result is as follows. During training, body composition due to the high intensity training to maintain a properly balanced diet is the consumption of energy, weight and body composition has a positive influence. The male players' average energy intake is 5,951.6 kcal(72.6 kcal/kgBW, 150%), the rate of the three main nutrients, carbohydrate, fat, protein, is 72.6 : 8.7 : 18.7 respectively. For the female, the average energy intake is 3,685.6 kcal(51.8 kcal/kgBW, 121%), and the rate of the three main nutrients is 76.3 : 8.5 : 15.2. Both of male and female were taken sufficient Vitamin, mineral and other nutrient according to %RI(recommended intake). Based on the results of a survey of elite athletes and nutrition management and the systematic introduction and review of the program in conjunction with a professional nutritionist would need, and can also be applied to expand the school to the scene, the reality of the program review and development of qualified need.

• 한국산학기술학회논문지
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• 제10권12호
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• pp.3839-3847
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• 2009

본 연구는 국내 프로스포츠 경영환경 분석을 통해 문제점을 파악하고, 이를 중심으로 개선방안 및 프로스포츠 리그의 활성화 방안을 제시하는데 그 목적이 있다. 이에 따라 환경 분석에 의해 도출된 문제점들에 대한 개선방안으로서 국내 환경에 적합한 프로스포츠 리그 활성화를 위한 지침을 제시하고자 한다. 첫째, 프로구단의 수입원 창출을 위해 통합마케팅 전략 개발과 경기장 장기임대가 수반되어야 한다. 둘째, 선수마케팅의 잠재력을 개발하고 활용하여야 한다. 셋째, 국내선수 샐러리캡과 용병연봉 상한선이 함께 검토되는 소프트 샐러리캡을 실시해야 한다. 마지막으로 유소년 클럽의 활성화를 바탕으로 한 저변확대가 이루어져야 한다.

• 한국운동역학회지
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• 제22권1호
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• pp.17-24
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• 2012

This study is for providing fundamental data of sport biomechanics in GRF & plantar pressure of stepping foot of skilled & unskilled players' at the soccer instep shooting moments. Wearing Pedar-x of Novel, the study has drawn the following conclusion after measuring and analyzing the impact on the GRF and plantar pressure of stepping foot at the instep shooting moments. First, maximum vertical GRF showed higher in the skilled group than in the unskilled group. The results showed significantly different. This study reached the conclusion that the players in the skilled group performed faster and stronger stepping foot motions that the ones in the unskilled(p<.01). Second, since the plantar pressure of the skilled group appeared significantly higher than that of the unskilled, it has brought us to the conclusion that the skilled group performed faster and stronger stepping foot motions than the unskilled group (p<.05). Third, at the moment of instep kicking, the skilled group's average maximum plantar foot pressure of stepping foot was higher than the unskilled. Though the difference was not statistically significant, it can be concluded that the skilled group performed faster and stronger stepping foot motions than the unskilled group(p>.05). Fourth, for the COP moving route of stepping foot while instep kicking, the skilled people performed accurate and strong shooting motions directly toward the target direction with stable postures, no matter how it's left, right, front or back.

• 한국운동역학회지
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• 제20권2호
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• pp.139-148
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• 2010

The purpose of this study was to comparatively analyze the kinematic variables between the squash backhand and racquetball backhand strokes through three-dimensional cinematography. Three expert racquetball players and three expert squash players were involved in the data gathering process. The horizontal, vertical and lateral displacement of racket and trunk segment, intersegmental angular velocity of the wrist, elbow and shoulder joints, and the linear velocity of the racket were descriptively analyzed, and the followings were concluded. The racket of the squash backhand stroke showed an 'U' shaped movement where the racket moved rapidly downward and moved forward to make an impact and followed through to a front-top finish, while the racket of racquetball backhand stroke showed an 'O' shaped movement where the racket showed circular movement through the rear and bottom positions for the impact, and showed rotation through the lower-front and upper front to a upper-rear-ward finish during the follow-through. The peak velocity of racket was found before the impact point in the squash backhand stroke and at the impact point in the racquetball backhand stroke. For the final conclusion, for the squash backhand stoke, instructors might be better to make the racket move downward to make highest velocity before the impact and finished short follow-through, while for the racquetball backhand stroke, to make the racket move forward to make highest velocity at the impact and finished rather long follow-through.

• 디지털융복합연구
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• 제15권7호
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• pp.479-487
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• 2017

본 연구의 목적은 사회연결망 분석을 축구경기에 적용하여 가장 영향력 있는 선수를 파악하는데 목적이 있다. 연구대상은 2014 브라질월드컵에 참가한 독일 축구 국가대표팀과 대한민국 축구 국가대표팀이며, FIFA에서 제공한 선수별 패스 데이터를 수집하고 Ucinet 6 프로그램을 사용하여 사회연결망분석과 패스 성공률을 분석하였다. 연구결과 다음과 같은 결론을 얻었다. 첫째, 패스를 많이 주고받은 선수는 패스 연결 네트워크에서 연결 중심성이 높았고, 선수들과의 근접 중심성도 높게 나왔다. 둘째, 독일은 LAHM과 KROOS가 주요 선수로 나타났으며, 대한민국은 KI.S.Y 선수가 주요 선수로 나타났다. 셋째, 근접 중심성과 패스 성공률의 정량적 지표는 독일이 대한민국에 비하여 높은 것으로 나타났다.