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RISS 인기검색어
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- 저자 : 이영석(YoungSukLee) (검색결과 3 건)
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운동역학 : 노인의 계단 오르기 활동시 계단 높이가 지지기 동안의 하지 관절 모멘트에 미치는 효과
은선덕(SeonDeokEun),이영석(YoungSukLee) 한국체육학회 2004 한국체육학회지 Vol.43 No.5
The purpose of this study was to investigate the effect of the stair heights on the lower extremity joint moment in stair-ascent activity of elderly persons. Data were collected by 3-D cinematography and force platform. Eight male eldery persons were participated in this experiment. All subjects performed a stair-ascent in four different heights of stairs (10, 14, 18, 22cm) having 5 step staircase. The changes of lower extremity joint moments were analyzed during stance phase. The results on the stair-ascent activity of elderly persons were as follows:First, maximum plantar flexion moment appeared in the 'forward continuance' phase for stair A and B, it occurred in the 'pull-up' phase for stair C and D.Second, it was shown that the maximum inversion moment of the ankle joint and abduction moment of knee joint were the smallest at stair B. In addition to, the maximum abduction moment of knee joint increased as the stair height become higher.Third, the maximum extension moment of knee joint was the greatest at stair B.Fourth, extension moment of hip joint in the 'pull-up' phase decreased significantly for stair C and D. The maximum extension moment at stair A and stair B was extremely great.Fifth, remarkable value of adduction moment occurred at hip joints and maximum adduction moment increased significantly at stair CThe results of this study demonstrated that the ascent activity at general heights of stair for elderly persons tended to be discomfortable. Moreover, the results indicate that effective height of stairs should be between 14 and 18cm in the place for elderly persons.
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측정평가 : 국내 남자 테니스 단식 경기의 승패 요인과 득점 과정 분석
이기봉(GeeBongLee),이영석(YoungSukLee),이기청(GeeCheongLee) 한국체육학회 2004 한국체육학회지 Vol.43 No.3
The purpose of this study was to analyze both the winning and lacing factors and the process of the getting point at the domestic nets single tennis games in 2003. Thirty collegiate and semi-professional players were participated in the fifteen single games. Twenty-one variables were selected and observed by notational analysis Discriminant analysis was used for the purpose of this study. In order to perform statistical analysis, SPSS (Version 11.5) was used.The results of the study were as follows:1. Stoke is the main variable to gain points in the single tennis match. It was the positive factor to win the match using the forehand and backhand stroke equivalently.2. The waning and losing factors were the numbers of service game, the numbers of brake gain, and the numbers of effective smash.3. In order to gain nut of the points a server performed stroke. The precise and powerful first service was the main factor.4. In order to pin pints, a receiver performed return. The waiver performed return and stroke contrary to the opponent’s player.
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박일혁(IlHyeokPark),이기봉(GeeBongLee),이영석(YoungSukLee) 한국체육학회 2008 한국체육학회지 Vol.47 No.3
본 연구의 목적은 중학교 남학생들의 농구 경기수행능력 평가 도구를 개발하는 것이다. 국가수준의 체육과 교육과정과 기존에 고안된 농구 기능평가 방법을 고찰하였고, 실제 학교 현장에서 사용하는 농구 기능평가 실태와 체육교사들의 인식을 파악하여 평가 도구 개발에 참고하였다. 전문가의 자문을 얻어 농구 경기수행능력 측정 항목을 선정하고 실제 학생들이 경기하는 장면을 촬영하여 각 항목을 측정하였다. 연구대상은 서울시 3개 학교의 9학급 153명으로, 각 학급별로 학생들을 3개 팀(팀당 5-7명)으로 나누고 각 팀당 2경기, 경기당 전후반 각 10분씩, 20분의 경기를 하였다. 학생들의 경기수행능력 항목별 기록을 전문가의 평가 점수와 비교하여 타당성을 검증하였고, 전문가들의 평가자내 신뢰도와 두 경기의 동일 항목 평가점수 간 상관을 통해 신뢰도를 검증하였다. 교육적 중요성, 전문가의 중요도 평가, 측정의 용의성 등을 고려할 때, 캐치, 슛성공, 어시스트, 스틸의 조합이 남자 중학생의 경기수행력을 평가하는 데에 적절하였으며 단순 기능 측정 방법에 비해 타당한 것으로 나타났다. 그러나 몇몇 항목들은 0의 기록이 너무 많고 신뢰도가 낮아 이를 중학교 남학생에게 적용하는 데에 문제점이 있는 것으로 논의되었다. The purpose of this study was to develop an assessment tool of basketball game performance ability for middle school male students. The items that may represent basketball game performance ability were selected based on the literature review and experts interview. Some of the selected items can be measured during the game and some can be measured through the analysis of video-taped games. Pilot test was conducted to revise the items and the assessment procedure. One hundred fifty three students from three different middle schools participated in at least 2 games with the minimum duration of 20 minutes for each student. All games were video taped and the scores for each item were recorded for validity examination. In addition, traditional performance tests were administered and compared with the selected assessment items in terms of validity. Three experts subjectively evaluated the students' game performance ability for criterion measures. Correlations and multiple regression analysis were employed to calculate criterion-related validity coefficients, and split-half reliability and Cronbach's alpha were used to obtain reliability coefficients. The combined items of catch, goals assist and steal showed a validity coefficient of .78 which was higher than that of any traditional performance test. However, some items such as assist and steal were found to be not appropriate for representing game performance ability because these items had too many '0' records and/or low reliability. The extent of application for this new assessment tool was discussed.
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