• 제목/요약/키워드: 테니스

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고속 다중 노출 영상을 이용한 골프공의 비행 요소 측정 (The Measurement of Flight Data of Golfball with High-Speed Multi-Exposure Image)

  • 김기현;박현우;주우석;이동훈;윤태수
    • 한국멀티미디어학회논문지
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    • 제12권5호
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    • pp.699-707
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    • 2009
  • 최근 체감형 스포츠 게임이 늘어나면서 실제 사용자의 동작을 인식하는 연구가 활발히 진행 중이다. 그 중에서도 골프에 관한 연구가 활발하다. 본 논문에서는 고속 다중 노출 영상의 획득이 가능한 카메라를 이용하여 골프공의 비행데이터를 측정한다. 고속 다중 노출 이미지의 획득이 가능한 카메라는 촬영 시, 한 장의 이미지에 여러 번의 노출을 이용하여 영상을 획득 할 수 있으며, 획득한 영상은 영상처리과정을 통하여 촬영된 공의 위치를 측정한다. 계산된 골프공의 위치는 물리공식을 이용하여 골프공의 비행데이터인속도, 날아가는 방향을 계산한다. 본 시스템은 향후 비행하는 골프공뿐만 아니라, 야구, 테니스 등과 같은 구형 물체의 물리적 요소 측정이 가능하다.

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수원시 2002 월드컵 종합체육공원 기본계획 (A Master Plan for the 2002 World Cup Sports Complex in the Suwon City, Korea)

  • Kim, Sung-Kyun
    • 한국조경학회지
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    • 제30권6호
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    • pp.119-127
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    • 2003
  • 본 연구는 수원시의 다양한 레크레이션의 수요증대와 지역주민을 위한 운동시설의 부족에 대응하기 위해 지역주민의 근린생활 체육시설을 확충하고, 수원시 연고의 삼성 블루윙즈 프로축구팀의 축구전용구장 및 연습구장 마련 및 2002널 월드컵 축구대회를 유치하고자 조성된 복합 스포츠판지에 대한 기본계획안이다. 개발방향은 1) 21세기의 생활패턴에 맞는 생활체육공간 조성, 2) 국제적 수준의 운동시설 및 인프라구축, 연중이용이 가능한 시민을 위한 커뮤니티 공간조성, 3) 친환경적이고 지속가능한 공간조성, 4) 복합적 토지 이용 개념을 도입하여 토지 활용도 및 재정 수입의 증대, 5) 쾌적한 보행시스템 제공, 6) 도시의 랜드마크로서 주변 도시체계와 연계성 강화, 7) 수원의 역사, 문화적 상징성 제고 등이다. 이를 위해 축구전용구장, 보조경기장, 잔디연습구장, 흙연습구장, 헬리포트장 능 축구전용구장 관련시설, 실내체육관, 실내 아이스링크 등 기타 체육시설, 야외 수영장, 농구장, 테니스장, 게이트볼장, 볼링장, 헬스장 등 생활체육시설, 스포츠용품 몰, 식음시설 등 편익시설, 야외공연장, 어린이정원, 영화관, 축구박물관 등 위락/문화시설, 산책로, 체력단련코스, 전망대 등 휴양시설, 그리고 주차장, 녹도, 녹지 등 기타 부대시설이 도입되었다. 본 연구는 종합체육공간이 단순히 체육시설이 모여 있는 곳이 아니라 시민들이 운동과 더불어 휴식, 등산, 놀이, 자연 학습 등 다양한 여가활동을 할 수 있도록 계획되었다. 상업시설, 커뮤니티 시설 등이 복합적으로 개발되어 있기 때문에 경기가 열릴 때뿐만 아니라 4계절 내내 주중, 주말 및 휴가기 간에 가족과 더불어 휴식을 취할 수 있는 레크레이션 및 커뮤니티 공간으로 중요한 역할을 하도록 계획된 새로운 개념의 체육공간이라는데 의의가 있다.

스크린 골프 콘텐츠 적용을 위한 골프공 비행 데이터 추출 카메라 시스템 (The Measurement Camera System of Flight Data of Golfball for the Application of Screen Golf Contents)

  • 김기현;박현우;윤지한;주우석;이동훈;윤태수
    • 한국콘텐츠학회:학술대회논문집
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    • 한국콘텐츠학회 2009년도 춘계 종합학술대회 논문집
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    • pp.875-879
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    • 2009
  • 본 논문에서는 스크린 골프 콘텐츠에 적용을 위한 골프공 비행 데이터 추출 카메라 시스템을 제안한다. 기존에 존재하는 스크린 골프 콘텐츠에 적용된 골프공의 비행데이터 추출 시스템의 경우 좌우 타석이 나눠져 있다. 따라서 본 연구에서는 카메라 시스템을 골프공이 지나가는 영역을 볼 수 있도록 천정에 설치하여 타석에서 왼손잡이와 왼손잡이의 제한이 없도록 하고, 비행하는 골프공의 촬영이 가능한 고속 CCD 카메라를 이용하여 골프공의 초기 비행 속도와 날아가는 방향, 떠오르는 각도를 추출하는 시스템을 스크린 골프 콘텐츠에 적용한다. 본 시스템은 향후 야구, 축구, 테니스 등 구형 물체를 이용한 스포츠형 콘텐츠에서 인식 디바이스로써 활용이 가능하다.

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전공체육 강의에서 e-러닝 활용의 제약 분석 (Analysis of constraints about using for e-learning in Sports Class)

  • 최성훈
    • 한국콘텐츠학회:학술대회논문집
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    • 한국콘텐츠학회 2009년도 춘계 종합학술대회 논문집
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    • pp.410-414
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    • 2009
  • 본 연구의 목적은 울산대학교에서 진행되고 있는 전공체육 강의에서 e-러닝 활용의 제약을 분석하는 것이다. 본 연구에서 e-러닝이 활용된 강의는 이론 과목으로써 여가학(3학점)과 실기 과목으로써 수영(1학점), 축구(1학점), 테니스(1학점) 등이었고, 사용된 홈페이지의 주소는 http://sunghun.ulsan.ac.kr 이었다. 연구방법은 심층면접과 관찰, 그리고 교수자의 서술이었다. 연구결과 e-러닝 활용의 제약은 다음과 같다. 먼저, e-러닝에서 학습자의 제약은 낮은 컴퓨터 활용능력, 정보 공유의 문제, 상호작용의 부족 등으로 나타났다. 둘째, 교수자의 제약은 용어사용의 혼란, 학습자들의 e-러닝에 대한 인식의 부족, e-러닝 강의의 진행에 따른 교수자의 시간 부족과 기술적 제약, 동료 교수자와의 형평성의 문제, 교수자들의 e-러닝에 대한 부담감 등이었다. 셋째, 구조적 제약은 대학의 행정적 기술적 제약 등이었다. 본 연구결과를 바탕으로 몇 가지 제언을 하면 다음과 같다. 먼저, 여가제약 이론은 전공체육 강의에서 e-러닝 활용상의 제약을 이론적으로 접근하는데 도움을 주었지만, e-러닝 활용의 제약이 어디에서 가장 많이 발생하고, 어떻게 학습자의 참여수준이 결정되는지 충분하다고는 할 수 없다. 둘째, 전공체육 강의에서 e-러닝이 활용되어 강의의 효과를 극대화하기 위해서는 강의의 계획단계에서 철저하게 준비되어야 한다. 셋째, 전공체육 강의에서 e-러닝 활용은 교수자와 학습자 모두에게 기존의 강의보다 2-3배 이상의 노력이 요구된다.

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테니스 양손 백핸드 드라이브 스트로크 시 볼 방향성에 따른 수평회전운동 비교분석 (A Comparative Analysis of Horizontal Rotation Movements for Different Ball Course during Two-handed Backhand Drive Stroke in Tennis)

  • 서국은;정용민;강영택
    • 한국운동역학회지
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    • 제25권3호
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    • pp.293-300
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    • 2015
  • Objective : The purpose of this study was to compare the kinematic data of the horizontal rotation movements of shoulder, hip, knee during two-handed backhand drive stroke according to two different ball directions. Methods : The kinematic variables were analyzed such as the joint angles of the lower body, horizontal rotation angles of the shoulder, hip, inter-knee segment, body twist angle and difference in angle of forward swing. Two-handed backhand drive stroke was analyzed through a three-dimensional motion analysis. The collected data were analyzed by a paired t-test, and the statistical significant value was set at ${\alpha}=.05$. Results : The findings of this study were as follows; First, there was no difference in the total angles of lower limb joints from the forward swing position to impact posterior. Second, there was no difference in the horizontal rotation angles of E1 shoulder, hip, and E2 shoulder but the horizontal rotation angles of E1 knee, E2 hip, knee, E3, and E4 shoulder, hip, and knee were different in all events. Third, there was no difference in the body twist angle of the maximum horizontal rotation. In addition, there was no difference in the angle of the body twist by the ball direction in the shoulder-hip, the hip-knee and the shoulder-knee. Conclusion : Horizontal rotation angle determines ball directions.

심박수에 의한 테니스경기의 에너지 소요량 측정 (Evaluation of Energy Cost in Terms of Oxygen Uptake by Measuring Heart Rate During Tennis Games)

  • 조병희;정규철;홍연표
    • Journal of Preventive Medicine and Public Health
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    • 제17권1호
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    • pp.289-294
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    • 1984
  • The energy expended while playing tennis was determined from the players heart rate and from the amount of oxygen they consumed. This study was made using eight healthy but unathletic male college students. Expired air was collected for 2 minute periods during each game by the Douglas bag method. Samples were collected when serving and receiving. The air collected was measured using a wet test gas meter. The amount of air collected was expressed in STPD. Oxygen consumption was determined by measuring the oxygen content of the expired air with a Orzat gas analyzer. The energy expended during the tennis games was calculated indirectly. The caloric coefficient of oxygen was multiplied by the volume of oxygen consumed. The caloric coefficient of oxygen varied from 4.6 to 5.1 kcal/liter of oxygen. In this study the value of 5 kcal/liter of oxygen was used in the calculations. The accuracy of the measurements of energy expended was tested using regression analysis of the measured volume of oxygen. The mean values of heart rate, oxygen consumed and energy expended did not vary when the activity of serving and receiving was compared. The mean value of oxygen consumed during play was $1.4329{\pm}282ml/min$ or $21.6{\pm}4.0ml/kg/min$. The energy expended was $7.15{\pm}1.46kcal/min$ or $6.45{\pm}1.23kcal/kg/min$. The values were equivalent to 5.5 mets. When the levels of oxygen consumed were estimated using the formulas, they were found to be higher than the measured levels. The estimated amounts, however, were within 25% of the measured amounts.

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테니스 포핸드 스트로크 동안 스탠스 조건에 따른 3차원 운동학적 분석 (3-D Kinematic Analysis According to Stance Patterns During Forehand Stroke in Tennis)

  • 최지영
    • 한국운동역학회지
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    • 제15권4호
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    • pp.105-115
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    • 2005
  • Recently among several tennis techniques forehand stroke has been greatly changed in the aspect of spin, grip and stance. The most fundamental factor among the three factors is the stance which consists of open, square and closed stance. The purpose of this study was to investigate the relations between the segments of the body, the three dimensional anatomical angle according to open, close, and square stance patterns during forehand stroke in tennis. For the movement analysis three dimensional cinematographical method(APAS) was used and for the calculation of the kinematic variables a self developed program was used with the LabVIEW 6.1 graphical programming(Johnson, 1999) program. By using Eular's equations the three dimensional anatomical Cardan angles of the joint and racket head angle were defined. In conclusion, the first hypothesis, "In three dimensional maximum linear velocity of racket head would be significant difference among the stance patterns during forehand stroke in tennis" was rejected. The second hypothesis, "In three dimensional anatomical angular displacement of trunk would be significant difference among the stance patterns during forehand stroke in tennis" was rejected and the result showed that the internal-external rotation showed most important role among the three dimensional anatomical angular displacement of trunk The third hypothesis, "In three dimensional anatomical angular displacement of upperlimb would be significant difference among the stance patterns during forehand stroke in tennis" was rejected and the result showed that The three dimensional anatomical angular displacement of shoulder joint showed most important role in forehand stroke. Flexion-extension and internal-external rotation the open stance showed the largest angular displacement and is follwed by square stance and closed stance. The fourth hypothesis, "In three dimensional anatomical angular velocity of upperlimb would be significant difference among the stance patterns during forehand stroke in tennis" was rejected and the result showed that X-axis angular velocity and Z-axis angular velocity the square stance showed the largest angular velocity of the trunk and X-axis angular velocity and Y-axis angular velocity the closed stance showed the largest angular velocity of the shoulder joint.

스탠스 유형에 따른 테니스 포핸드 스트로크의 라켓헤드 속도분석 (Analysis of Racket Head Velocity of Tennis Forehand Stroke by Stance Patterns)

  • 서국웅;강영택;이경순;서국은;김정태
    • 한국운동역학회지
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    • 제17권1호
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    • pp.53-60
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    • 2007
  • Recently tennis techniques has been changed in stance patterns. Stance is consist of square stance, open stance and semi-open stance. The purpose of this study was to analyze the kinematics variables of racket head velocity during forehand stroke by stance patterns. Eight high school tennis players were chosen for the study who use semi western grip right-handed person more than career 7 years. They performed horizontal swing and vertical swing that it was done each five consecutive trial in the condition of square, open and semi-open stance. The results showed that racket head velocity significant difference was not observed in stance types between swings at impact. Y and Z components of racket head velocity for horizontal and vertical swing at second prior to impact and at impact were that y components velocity was faster horizontal swing than vertical swing and z components velocity was later horizontal swing than vertical swing. Statistically significant variable to racket head velocity and Pearson's correlation were drawn as follows. 1. Z components of racket head velocity in square stance was significant correlation by right knee joint. 2. Y components of racket head velocity in semiopen stance was significant correlation by left hip joint. 3. Y components of racket head velocity in open stance was significant correlation by left ankle joint.

Isomed 2000을 이용한 고등학교 테니스 선수 서브동작의 어깨관절 회전력과 근동원 양상 분석 (An Analysis of Shoulder Joint Torque and Muscle Pattern Duing Tennis Serve by Isokinetic Motions on Isomed 2000)

  • 김성섭;김의환;성영호;김태완;정재욱
    • 한국운동역학회지
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    • 제17권1호
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    • pp.61-68
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    • 2007
  • The purpose of this study was to analyze the shoulder joint torque and muscle pattern performing as Tennis serve by Isokinetic motions on Isomed 2000. The subject, who was 5 males Korean national high school tennis players. By analyzing the flexion/extension of the shoulder, the peak torque of the internal/external rotation motion(at 60,180 and 300 degree/sec) at peak torque degree, the weight, peak torque, and power. combined with the timing of the electrode of the attached trapezius and posterior deltoid at the three part. From the data analysis & discussion the following conclusions were drawn. When doing a shoulder extension, the peak torque can be widely seen at 60degree per second. However the degree may be different depending on angular velocity. When doing an internal rotation at 90degree abduction, peak torque per weight was seen at 60degree per second. The degree of peak torque was at 31.6-44.2 and peak power was faster when angular velocity was increased. The aspect of muscle pattern was seen more at the internal rotation in the 90degree abduction rather than the shoulder extension. However the angular velocity was not influenced by muscle mobilization(in order of anterior deltoid, posterior deltoid and trapezius. To properly apply the above conclusion, when tennis players serve it is better the elbow be impacted by the extension. when doing isokinetic motion it is better to increase angular velocity and improve muscle power. also the anterior deltoid amongst the shoulder muscle should be improved to develop serve speed.

테니스동호인이 인지하는 지도자의 코칭행동이 참여자의 강습만족 및 지도자선호도에 미치는 영향 (Effects of Instructors' Coaching Behaviors Recognized by Tennis Club Members on Participants' Satisfaction with Lesson and Preference for Instructors)

  • 황영성;유현조
    • 수산해양교육연구
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    • 제27권3호
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    • pp.791-803
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    • 2015
  • This study aims to examine the influence of tennis instructors' coaching behaviors on the satisfaction with lessons and preference for instructors. In order to achieve this study objective, by using the quota sampling out of nonprobability sampling for tennis club members who are now(2015) actively involved in tennis courts located in Daejeon Metropolitan City and Chungcheongnam-do, and also receiving tennis lesson for more than six months or used to take lessons before, the 325 effective samples were used for data analysis. Using the SPSS Ver. 21.0 Window Program, the collected data went through frequency analysis, exploratory factor analysis, reliability analysis, t-test, one-way ANOVA, correlation analysis and multiple regression analysis, and the results are like below. Regarding differences of coaching behaviors depending on sex, first, there were significant differences in the factors like explanatory instruction, positive feedback and negative feedback. In case of differences in accordance with age, every factor showed significant differences. In regard of differences depending on academic background, there were differences in the factor of negative feedback while the factor of positive feedback showed differences in accordance with the experience of lesson. In case of differences depending on the level of athletic performance, there were statistically significant differences in the factors like explanatory instruction, questioning instruction and negative feedback. Second, the positive feedback, one of the sub-factors of coaching behaviors had positive influence on satisfaction with lesson while the explanatory instruction, one of the sub-factors of coaching behaviors had positive influence on preference for instructors. Lastly, the satisfaction with lesson had positive influence on preference for instructors.