http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
- 中文 을 입력하시려면 zhongwen을 입력하시고 space를누르시면됩니다.
- 北京 을 입력하시려면 beijing을 입력하시고 space를 누르시면 됩니다.
RISS 인기검색어
- 검색키워드
- 저자 : 정남주(ChungNam-Ju) (검색결과 1 건)
- 무료
- 기관 내 무료
- 유료
-
운동역학 : 볼링의 헬리콥터 투구동작에 대한 운동학적 분석
정남주(ChungNam-Ju) 한국체육학회 2003 한국체육학회지 Vol.42 No.2
The purpose of this study. was to analyze the helicopter throw motion and patterns in bowling and present its correct method according to its characteristics. For this purpose, the throw motion of helicopter bending among national athletes and representative reservist athletes was videotaped with the camcorder and analyzed. To make a more accurate analysis of motion, the reflection marker was attached to the joint of the upper limbs and the DLT technique was used on the 3-dimensional coordinate. As a result, the following conclusion was drawn:The time required in the follow throw section in the helicopter throw motion was found to be Shorter than that of the down-swing section. The required time of the downswing section was characterized by being longer than that of the hook ball throw motion The height of the center of the human body showed the tendency to become lower from the Event 1 in which the left leg was easy to the Event 3 in which it was released but showed the tendency to become higher at the end of follow throw than at the point of projection. This was because the ball was projected from the max. lowest place to maintain the close relationship to the lane when projecting the ball. The forward leaning angle of the upper body in the helicopter throw motion was shown to be smaller at the start position but as the throw motion progressed the upper body bent forward and stand upright when somewhat releasing the ball and bent forward again after the hall left the hand and released. The phenomenon of the trunk standing upright at the point of release was found to be because the upper body exerted an compensatory action on the weight of the ball when projecting the ball. At the time of the helicopter throw motion it was found that the angle of the shoulder joint was large to control inward rotation and the ball on the lane and the upper arm was released at the forward position than at the vertical position and the elbow angel released at the somewhat bent state.
연관 검색어 추천
이 검색어로 많이 본 자료
활용도 높은 자료
