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- 저자 : 신용석(ShinYong-Seok) (검색결과 2 건)
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운동생리학 : 부하형태에 따른 Plyometric training 효과 비교 분석
유영규(YuYoung-Kyu),신용석(ShinYong-Seok),김석희(KimSeok-Hee),이동욱(LeeDong-Wook) 한국체육학회 2003 한국체육학회지 Vol.42 No.4
The purpose of this study was to investigate the effects in plyometric training according to loading types. Research subjects were 18 college students athletes who play basketball, volleyball.They were divided into three groups: two types of experimental groups and a control group. the changes of the thigh muscle' strength and vertical jump were compared and analyzed. Results found from such a comparative analysis study were as follows:1) The change of thigh muscle's strength according to training periods.(1) The plyometric training group by a steady increase loading type.It appeared that in the effect of the total work in the quadriceps and hamstrings of high speed and low speed, the low speed load showed more improvement than the high speed load, but it isn't statistically a significant difference. And the effect of the total work according to training period showed a statistically significant difference (p<.05).It appeared that in the effect of the average power in the quadriceps and hamstrings of high speed and low speed, the high speed load showed more improvement than the low speed load, but it isn't statistically a significant difference. And the effect of the average power according to training period showed a statistically significant difference (p<.05).It appeared that in the effect of the peak torque in the quadriceps and hamstrings of high speed and low speed, the quadriceps high speed and the hamstrings low speed showed a statistically significant difference (p<.05). And the effect of the peak torque according to training period showed a statistically significant difference (p<.05).(2) The plyometric training group by a regular wave loading type.It appeared that in the effect of the total work in the quadriceps and hamstrings of high speed and low speed, the low speed load showed more improvement than the high speed load, but it isn't a statistically significant difference. And the effect of the total work according to training period showed a statistically significant difference (p<.05).It appeared that in the effect of the average power in the quadriceps and hamstrings of high speed and low speed, the high speed load showed more improvement than the low speed load, but it isn't a statistically And the effect of the average power according to training period in the quadriceps of high speed and the hamstrings of low speed showed a statistically significant difference (p<.05).It appeared that in the effect of the peak torque in the quadriceps and hamstrings of high speed and low speed, the quadriceps of high speed and the hamstrings of low speed showed a statistically significant difference (p<.05). And the effect of the peak torque according to training period showed a statistically significant difference (p<.05).2) The change of vertical jump according to training periods.(1) The plyometric training group by a steady increase loading type.It appeared that in the effect of the vertical jump in the loading type and training period, showed a statistically significant difference (p<.05).(2) The plyometric training group by a regular wave loading type.It appeared that in the effect of the vertical jump in the loading type and training period, showed a statistically significant difference (p<.05).3) The change of three group according to training periods.(1) The thigh muscle's strength in changes among the group according to a training period.It appeared that in the effect of the total work in the hamstrings, the plyometric training group by a steady increase loading type showed more improvement than the plyometric training group by a regular wave loading type, no training group, but it isn't a statistically significant difference.It appeared that in the effect of the total work in the quadriceps, the plyometric training group by a regular wave loading type showed more improvement than the plyometric training group by a steady increase loading type, no training group, but it isn't
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역학 : 운동역학적 분석에 쓰이는 두가지 Inverse Dynamics 함수의 비교연구
황인승(HwangIn-Seong),이성철(LeeSung-Cheol),신용석(ShinYong-Seok) 한국체육학회 1998 한국체육학회지 Vol.37 No.1
운동역학적(kinetic)분석을 위한 방법은 대체로 두 가지 방법이 쓰여왔다. 하나는 힘-질량-가속도(force-mass-acceleration)방법이고 다른 하나는 운동-종속 상호작용(motion-dependent interaction)방법이다.이 두 가지 방법은 모두 뉴우톤(Newton)의 역학(dynamics) 함수에 기초를 두고 있으나 분절의 CM의 가속도를 구하는데 차이가 있다. 힘-질량-가속도 방법은 분절 CM의 가속도를 직접 필름 테이터를 미분하여 얻고, 운동-종속 상호작용 방법은 분절 CM의 가속도를 분류하여 얻어내어 사용한다. 본 연구에서는 이 두 가지 방법을 정확히 제시하고, 동시에 태권도 앞차기에 적용시켜 그 결과를 비교하여 보았다. 전체적 모양은 같게 나왔으나 말초 분절로 갈수록 두 가지 방법에 의하여 얻어낸 가속도의 절대값은 점점 더 큰 차이를 보였고 결과적으로 토오크 및 관절 반사력 역시 차이를 보였다. 결론적으로 다수의 분절로 이루어진 시스템을 분석할 때는 그 결과의 해석에 특히 절대값 자체의 해석에 주의할 필요가 있다고 하겠다. A full understanding of the cause - effect mechanics that produce any body motion requires the use of a model to link the kinematics of that motion with the kinetic factors responsible for it. This can be achieved in part by using an inverse dynamics approach to compute the net joint forces and torques exerted on a segment by the segments adjacent to it. Generally two kinds of inverse dynamics have been used for the kinetics analysis. One is "the force-mass- acceleration" methods and the other is "the motion dependent interaction" methods. These two methods applied to Taekwondo front kick skill to clarify the functions and to compare the results. Basically the two functions derived from the Newton`s dynamics equations. "The motion dependent interaction" method used the partitioned acceleration of the mass center of the each segment, while the classic "force-mass-acceleration" method used the acceleration of the mass center of the each segment from the film data. The accelerations of the two methods showed as much differences as the calculation performed to the distal segment. It was advisable that if we analize multi-segments interaction we have to be careful to interpret the results.
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