왜 그들은 중도탈락 하였나? : 운동프로그램 참여자들의 포기 원인분석 Analysis of Dropout Causes of Participants in the Exercise Program

백승국 한국스포츠리서치 2003 한국 스포츠 리서치 Vol.14 No.3

The purpose of this study was to find out the dropout causes based on many people who were dropped out in the middle of participating on swimming and health program. The subjects of this study were based on total 210's females who were dropped out within one year from now after the participation on exercising swimming and health program. After we selected and analyzed total 157's females as the final subjects, we had the conclusions as follows: First, the swimming, that had high difficulties and skills compared with the health, was found to have a high dropout value. Second, the dropout of 30-aged females who had high domestic and social activities was found to have a high value. And then the cost's causes were found to have the most low factor of all the things. Third, the participants who graduated from the middle school were found to have a high dropout's factor, compared with other females. Fourth, the longer was the duration of exercise, the higher was the dissatisfaction of the cost, and then this made the dropout to be increased.

저가형 3차원 동작분석 소프트웨어 개발

백승국,박찬희 東亞大學校附設스포츠科學硏究所 1998 스포츠科學硏究論文集 Vol.16 No.-

The purpose of this stduy is to make low cost 3D motion analysis system software. Our system software is more simple and convenient than other systems in analysing the task. But the function of this software is very economical and practical in analysing the tasks. the conclusions are below. 1. Video signal was converted to computer memory as real-time for 320×240 8bit 30frames/sec resolution by frame grabber. 2. The 3D analyzing software was execute for easy and fast under WIMDOWS environment. 3. All menus are full down and button and those are easy used.

저가형 동작분석 시스템 장비 개발

백승국,박찬희,오성기 東亞大學校 附設 스포츠科學硏究所 1997 스포츠科學硏究論文集 Vol.15 No.-

The purpose of this study is to make low-cost 3D motion analysis system hardware. Now the motion analysis systems have broadly been used in our contry, but the cost is very high. Our system is more simple and convenient than other systems in analysing the task. But the function of this system is very economical and practical in analysing the tasks. The conclusions are below. 1. It was possible for us to connect ofdinary camcorder and high speed camera with this system. 2. Video signal was converted by frame grabber and then was transfered to computer memory as real-time. 3. The converted images resolution was the size of 640×480 32 bit and was displayed with full-color and full screen.

댄스스포츠동작의 근 활동에 관한 분석

백승국,김철형 한국스포츠리서치 2003 한국 스포츠 리서치 Vol.14 No.3

This study was investigated about Hip Movement in Whisk of Samba of Latin American Dance Sport go through Electromyographic Analysis of Gluteus Medius, Erector spine, Rectus abdominis, External oblique. the subjects were three experts and three beginner of woman high school students. the conclusions of this study were follows It need of Gluteus Medius, Erector spine, Rectus abdominis, External oblique at hip movement. Beginners indicated to unsuitable energy for a momently in Gluteus Medius and while, Expertes External oblique was notable action at twist motion External oblique was most important in Hip Movement of Latin American Dance Sport more then anther muscles. Good Movement of hip were all muscles to be harmonious.

볼링의 투구동작에서 신체중심과 볼의 위치에 대한 운동학적분석

백승국 부산 외국어 대학교 2002 外大論叢 Vol.25-2 No.-

The purpose of this study was to compare between success and failure in bowling throw motions. For the data analysis, it was utilized by the method of three dimensional motion analysis and obtained kinematical parameters of COG position, ball position and relative position of ball toward the C.O.G through the address to release motion. The subjects of this study were three female bowling players, and obtained conclusions were as follows; COG variation for height were less than failure, but there were not significance between success and failure. The ball position of 3th phase was lowest than other phases, and throw motions were stable by the small variations for upward and downward. Success event's of Relative positions of ball were more regulated than failure in whole swing phases.

볼링의 투구동작에 대한 운동학적 분석

백승국 한국운동역학회 2002 한국운동역학회지 Vol.12 No.2

본 연구는 볼링 투구동작의 성패는 스텝과 스윙이 결정한다는 가정 하에 어프로치에서의 동작에 주안점을 두고, 볼링선수를 대상으로 자유로이 투구를 하게 하고 피험자 본인이 잘되었다고 판단하는 동작과 잘 못되었다고 판단하는 투구 동작을 비교 분석하는 것이 본 연구의 목적이다. 투구동작시 어드레스에서부터 릴리즈까지의 동작을 각 스텝별로 국면을 설정하고, 3차원영상분석을 실시하여 각 스텝별로 보폭, 신체중심의 위치, 볼의 위치를 성공과 실패동작으로 나누어서 비교 분석하였다. 보폭은 성공과 실패동작에서 큰 차이를 보이지 않았으며, 4국면과 5국면에서의 보폭이 실패동작에서 크게 나타났다. 신체중심의 위치에서도 큰 차이를 보이지 않았으나 성공시가 실패시보다 상하 이동폭이 작게 나타났다. 볼의 위치는 성공과 실패시 모두 스텝중에는 3국면 이 가장 낮게 나타났으며, 상하 이동폭이 적은 안정적인 투구를 하는 것으로 나타났다. The purpose of this study was to compare between success and failure in bowling throw motions. For the data analysis, it was utilized by the method of three dimensional motion analysis and obtained kinematical parameters of stride, COG position andball position through the address and release motion. The subjects of this study were three female bowling players, and obtained conclusions were as follows; Displacements of stride were not significance of success events, 4th and 5th phase stride were longer than failure. SOG variation for height were less than failure, but there not significance between success and failure. The ball position of 3 th phase was lowest than other phases, and throw motions were stable by the small variations for upward downward.

3차원 비디오 자동 동작분석 시스템 개발

박성순,양창수,장준원,이경일,우철호,백승국 한국운동역학회 1998 한국운동역학회지 Vol.8 No.2

The purpose of this study was to develope both hardware and software of automatic 3-dimensional video motion analysis system. In this image capture system, the vedeo image was stored as a file in CD-Rom directly, the refore it was possible to analyze motion without VCR. Reflective markers were used to digitize automaticaly. C-language and MS-Visual Basic 5.0 ] anguage were utiliged in this software to analyze motion. The conclusions were as follows; 1. The vedeo information at sixty frames per second could be captured accurately as a image with a resolution photography of 640×480-24 bit. 2. It was possible to digitize both manually and automatically utilizing reflective marks attached the body. 3. The automatic 3-dimensional video motion analysis system, which was developed in this study not only increased accuracy but also reduced digitizing time so much.

윈도우즈용 3차원 동작분석 소프트웨어 개발

박찬희,백승국 한국운동역학회 2000 한국운동역학회지 Vol.9 No.2

The purpose of this study is to develop the window's software of 3 dimensional motion analysis system. The characteristic of this software doesn't need VCR, and can easily enforce motion analysis task with ordinary camcoder, and then can store motion image in computer memory with real time in the case of using image board. This software consists of C-langrage and MS-Visual Basic 6.0 The conclusions of this study are follows: 1. The image of 60frames/sec is found to have 640×480-24bit's resolution accurately. 2. To obtain 300image, the RAM of 256MB should be used. 3. This software is found to be harmony with hardware, and to have an excellent stability. 4. This software is found to have a easy usage, and to have a low cost

멀리뛰기 동작에 관한 運動學的 分析

朴贊熙,白承國 東亞大學校附設스포츠科學硏究所 1991 스포츠科學硏究論文集 Vol.9 No.-

The purpose of this study is to investigate Kinematic Parameters the phase of run-up, approach and airbon of long jump for 8 middle school subjects, the method of experiment for the Diret Linear Transformation(DLT) of 3D cinematography using Video Shutter camera. From the result of analysis, following conclusions be derived. 1. The height of center of Gracity have to lower from last-3 step. 2. In order of Length is Last, Last 3step and Last 2step of stride Length in run up period. 3. Have to do long of Last 2 stride in order to maintain a approach speed. 4. The more rate of vertical by Horizental Velocity is the more record is in take off velocity.

철봉 내리기 동작의 릴리즈 특성에 관한 연구

박찬희,백승국 東亞大學校附設스포츠科學硏究所 1996 스포츠科學硏究論文集 Vol.14 No.-

This study aims to analyze various kinetic variants appearing at the takeing-off moment of the updated technique of stretching landing with Double twist and Double somersault, which can be played be only a few domestic horizontal bar gymnastics. Those characteristcs at the moments of release are to be compaired with other skills in the hope of helping develop new technics and coach the athletes. The result are as follows : 1. The height of center of gravity at the releasing moment was 2,638m, little different from other skills. 2. Pushing the bar by the right arm at the moment of release was noticed, by which the rotation force for left twist turn was achieved. 3. The release velocity turned out 4.390 m/sec, a little lower than at the 3 back-turn landing skill. 4. The release angle turned out 76.40。