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보행 시 신발의 아웃솔 형태가 하지 관절 운동과 발의 압력에 미치는 영향
김의환 ( Eui Hwan Kim ),김성섭 ( Sung Sup Kim ),권문석 ( Moon Seok Kwon ),위웅량 ( Ung Ryang Wi ),임정 ( Jung Lim ),정재욱 ( Chae Wook Chung ) 한국운동역학회 2011 한국운동역학회지 Vol.21 No.2
The purpose of this study was to analysis the effect of form and hardness of outsoles on the motion of the lower extremity joints and on foot pressure during gait. The subjects were 15 women(mean age, 48.5±2.4years), who had no serious musculoskeletal, coordination, balance or joint/ligament problems within 1 year prior to the study. The pelvic tilt, joint angles at the lower extremities and the vertical ground reaction force(GRF) were compared during gait with 3 types of shoes (A, B, C) by using one-way repeated ANOVA(p<.05). During gait, the peak tilt angle and the range of motion(ROM) of the ankle and knee joints were found to be significantly different among the 3 types of shoes. The type C shoes showed a significantly lower mean second maximum vertical GRF than types A and B. The curved outsoles of type C shoes, which had a form and hardness different from those of A and B, was designed strategically for walking shoes to provide stability to the Additionally, type C induced the dispersion of eccentric pressure and made the center of pressure roll over to the center line of the foot.
세계일류여자높이뛰기선수의 발구름 기술에 대한 바이오메카닉스적 분석
배영상 ( Young Sang Bae ),김의환 ( Eui Hwan Kim ),김기만 ( Ki Man Kim ),이정민 ( Jeong Min Lee ),김성섭 ( Sung Sup Kim ),권문석 ( Moon Seok Kwon ),위웅량 ( Ung Ryang Wi ) 한국운동역학회 2011 한국운동역학회지 Vol.21 No.5
The purpose of this study was to analyze, from a kinematical point of view, the high jump techniques of three women`s high jump winners at the IAAF World Championships, Daegu 2011. The trends for the techniques of the world`s top high jumpers were examined, with a view toward adapting these techniques to the physical characteristics of Korean women`s high jumpers. It was valuable that Di Martino, who was the shortest in height, was able to win a medal by using a single arm swing take-off technique, along with a half flexed leading leg swing to attain a deep arch and clear the bar. This showed that the world`s top athletes used jumping techniques with no decrease in the run-up velocity at the take-off. Furthermore, It appeared that the knee joint angle at take-off had a direct effect on the body position at take-off (H1).