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RISS 인기검색어
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- 저자 : 이일구 ( El Koo Lee ) (검색결과 2 건)
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김갑선 ( Kab Sun Kim ),박철홍 ( Chuel Hong Park ),이일구 ( El Koo Lee ),정남주 ( Nam Ju Chung ),김동현 ( Dong Hyeon Kim ) 한국운동역학회 2011 한국운동역학회지 Vol.21 No.1
The purpose of this study was to perform a kinematic analysis of Harai-goshi(hip throw) in superior female judo players. From our analysis, it appeared desirable for the player to shorten the duration of the technique for maximum results. It was also desirable for the player to draw the opponent backward while simultaneously maneuvering her close to her own body. A turning movement of the body toward the left side was found to be required for the technique, during which the player must lower the position of the center of gravity. During the subsequent angular change of the elbow, the player winds the elbow and, by moving the left shoulder, pulls the opponent toward her. The player lowers the body center by bending the left knee and letting the right knee extend, while turning the upper body and bending the hip joint. The player then draws the opponent in, contacts the opponent closely, turns, and stretches the right knee and hip joint rapidly and concisely, completing the move; it was also found to be desirable for the angular velocity to be increased for maximum efficacy.
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달리기 질주속도 체감 및 질주동작 변용에 영향을 미치는 체력적 요인분석 : on the Upper Limbs
이승훈,신범철,이일구 한국스포츠리서치 2003 한국 스포츠 리서치 Vol.14 No.6
The purpose of this story was to clarify the physical fitness factors influencing the decrease in speed and the change of motion during running with reference to the role of upper limbs. The subjects were twelve track and field athletes(decathletes). Running speed and kinematics parameters were obtained at the first phase and the final phase during the running with maximal effort. The subjects were examined Wingate anaerobic test(pedaling and arm cranking) and isokinetic muscular endurance test on three joints (shoulder, Knee and hip). The results were summarized as follows; 1) The higher anaerobic endurance capacity in arm cranking was, the smaller the reduction of running speed between the first phase and the final phase of running was. 2) There was significant correlation between the amount of difference about minimum hip angle and the muscular endurance rate of shoulder flexion(p<0.05). These results suggest that the anaerobic endurance capacity of upper limbs influences the decrease in running speed and the change of running motion during running. In addition, it is necessary to build up the anaerobic endurance capacity of not only lower limbs but also upper limbs in running.
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