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엘리트 남자 테니스 선수들의 양손 백핸드 스트로크 동작에 대한 운동학적 분석
차정훈 ( Jung-hoon Cha ),정희석 ( Hee-seok Chung ),김석환 ( Seuk-hwan Kim ) 한국체육대학교 체육과학연구소 2016 스포츠사이언스 Vol.33 No.2
본 연구의 목적은 엘리트 남자 테니스 선수들의 백핸드 스트로크 동작에서 나타나는 운동학적 변인들을 정량적으로 분석하는데 있다. 본 연구의 목적을 달성하기 위하여 K대학교 엘리트 남자 테니스 선수 7명을 대상으로 적외선 카메라 12대를 사용하여 3차원 동작분석을 실시하였으며 다음과 같은 결론을 얻었다. 첫째, 구간 별 소요시간은 P2구간이 가장 빠른 시간 내에 수행 한 것으로 나타났다. 둘째, 라켓의 이동범위는 좌우 방향, 수직 방행에 비해 전후 방향으로 가장 큰 이동범위(ROM)를 보였다. 셋째, 라켓의 최대 선속도는 전후 속도가 가장 빠르게 나타났고, 다음으로 좌우 속도, 수직 속도 순으로 나타났으며 합성속도는 21.48±1.36 m/sec 로 나타났다. 넷째, 각 분절(골반, 몸통, 상완, 라켓)의 최대각속도는 라켓을 중심으로 원위 분절인 골반이 가장 느린 각속도를 보였으며 몸통, 상완, 라켓의 순으로 나타났고, 각 분절의 최대 각속도 발현 시점은 골반, 몸통, 상완, 라켓 순서를 보였는데 이는 근위 분절로부터 원위 분절까지 운동량이 연속적으로 전이되는 채찍 모형 패턴(Whip-like pattern)으로 백핸드 스토로크 동작에 있어 효과적인 동작을 수행한 것으로 판단된다. The aim of this study was to analysis quantitatively kinetic variables on two-handed backhand stroke of elite male tennis players. Seven tennis players who belong to K university were participated, and 3-dimensional motion analysis of their backhand stroke was conducted by using 12 infrared cameras. The results were as follows. First, the time required by sections indicated duration of P2 section was the shortest. Second, range of motion (ROM) of racket indicated anteroposterior motion was the largest, followed by side to side and vertical direction. Third, maximal linear velocity showed anteroposterior velocity was the fastest, followed by side to side and vertical velocity, and resultant velocity was 21.48±1.36 m/sec. Fourth, maximal angular velocity of pelvis, trunk, upper arm and racket showed velocity of pelvis which was most distal from racket was the slowest, followed by trunk, upper arm, and racket. And the timing of maximal angular velocity of pelvis was the fastest, followed by trunk, upper arm and racket. It concluded that this Whip-like pattern which meant momentum moved from distal to proximal part was effective on backhand stroke of tennis.
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국내 상위랭킹 테니스선수들의 투어일기 분석: 키워드 네트워크 분석적용
정희석(Hee Seok Chung),차정훈(Jung Hoon Cha),곽보라(Bo-Ra Kwak) 한국체육측정평가학회 2020 한국체육측정평가학회지 Vol.22 No.4
이 연구의 목적은 키워드 네트워크 분석기법을 활용하여 국내 상위랭킹 테니스선수들의 투어일기를 분석하는 것이다. 구체적으로 테니스 투어일기를 분석하여 개인기록의 가치와 의미, 성별에 따른 차이를 확인한 후 향후 세계적인 투어무대를 준비하는 국내 테니스선수들에게 유용한 참고자료를 제공하고자 한다. 이러한 목적을 달성하기 위하여 국내 상위랭킹 선수로 활동 중이며 투어일기를 작성하였던 6명(남자 3명, 여자 3명)을 목적표집 하였으며, 2013년 12월부터 2019년 12월까지 6년 동안 선수들이 테니스코리아(Tennis Korea)에 게재한 96편의 투어일기를 연구대상 자료로 선정하였다. 수집된 자료는 Krkwic 소프트웨어 프로그램을 이용하여 주요단어를 추출한 후 공출현 빈도를 산출하였다. 키워드 네트워크 분석은 Netminer 4.0을 활용하여 연결중앙성을 분석하였다. 분석결과는 다음과 같다. 첫째, 남자선수 투어일기에서 나타난 주요단어는 ‘출전’, ‘승리’, ‘패배’, ‘시즌’, ‘컨디션’, ‘부상’, ‘훈련’ 등이었으며, 시즌에 대한 훈련의 과정과 대회출전에 대한 내용을 내포하고 있는 것으로 나타났다. 둘째, 여자선수 투어일기에서 나타난 주요단어는 ‘선수’, ‘출전’, ‘예선’, ‘본선’, ‘시즌’, ‘진출’, ‘생각’ 등이었으며, 시즌 중 출전한 대회에서 예선, 본선 참가에 대한 자신의 생각을 내포하고 있는 것으로 나타났다. 셋째, 여자선수의 투어일기는 남자선수에 비해 상대적으로 감성적인 키워드가 많은 것으로 나타났으며, 남자선수는 자기성찰에 대한 키워드가 많은 것으로 나타났다. 결론적으로 남자선수와 여자선수 간 키워드에서는 차이를 나타냈으나, 각 시즌 대회별 개개인의 목표가 명확하게 드러나고 있다는 점은 동일한 것으로 해석된다. The purpose of the study is to analyze the tour diaries of top ranked tennis players in Korea using the keyword network analyzer method. Specifically, we would like to analyze the tennis tour diary to check the difference between the value, meaning and gender of personal records and provide good reference to domestic tennis players preparing for the future world tour stage. In order to achieve this goal, six players (3 men and 3 women) who were active as top ranked players in Korea and wrote tour diaries were targeted, and 96 tour diaries published by six players on Tennis Korea (Tennis Korea) were selected as research materials for six years from December 2013 to December 2019. The collected data were extracted using the Krkwic software program and calculated the frequency of publication. Keyword network analysis used Netminer 4.0 to analyze centrality of connectivity as an indicator. The analysis results are as follows. First, the main words in the male athlete"s tour diary were ‘participation’, ‘Victory’, ‘Defeat’, ‘Season’, ‘Condition’, ‘Injury’ and ‘Training’ and so on, and it was found to contain information on the course of training for the season and participation in the competition. Second, the main words in a female athlete"s tour diary were ‘Player’, ‘Participation’, ‘qualifier’, ‘Final’, ‘Season’, ‘Advance’ and ‘Thought’, and it was found that he had his idea of qualifying and participating in the finals in the competition he participated in during the season. Third, the female athlete"s tour diary showed that there were relatively more emotional keywords than male athletes, while male athletes had more keywords for introspection. In conclusion, the keywords between male and female athletes differed, but the same was true that individual goals for each season"s competition were clearly revealed.
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백보민(Bo Min Back),정영희(Young Hee Chung),엄현섭(Hyun Seoub Eum),권중호(Joong Hoo Kwon),차정훈(Jung Hoon Cha) 한국발육발달학회 2010 한국발육발달학회지 Vol.18 No.1
The purpose of this study is to identify if any differences in morphological characteristics of male bowling players on the basis of their capability level is relevant to sport capability and to predict the capability level of male bowling players accordingly. To serve this purpose, measurement was made on several physical variances such as height, weight, thickness of subcutaneous fat, girth and width of each individuals selected among excellent players as well as ordinary players. then this measurement was analysed to estimate discriminant function which can enable to predict the capability of bowling player. A Variate Analysis was used to examine the difference among average value of individual groups grouped by specific physical variation, with conclusive result as follows. First, Little differences were found between Excellent Players and Ordinary Players in those basic measurement variables such as sights, weights and sitting heights among total human body measurement variables. And For the thickness of subcutaneous fat among human body measurement variables, the measurement shows little difference between Excellent Players and Ordinary Players. It was found that there was some differences in height variable among human body measurement variables specifically in the lengths of lower limps(side) and thigh and lower leg between Excellent Players and Ordinary Players. And In girth variable among human body measurement variables, the middle part of thigh showed its difference between Excellent Players and Ordinary Players. 5. In width variable among human body measurement variables, there was difference in chest width between Excellent Players and Ordinary Players. And Muscle mass rate and the length of thigh/ lower leg among human body measurement variables showed differences between Excellent Players and Ordinary Players. The orderly variables that enable to predict the game capability level of bowling player are length of lower limps(side), width of chest, girth of middle thigh, length of lower leg, length of thigh/lower leg and muscle mess rate.
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