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- 저자 : 권훈겸 ( Hun Kyeom Kwon ) (검색결과 2 건)
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L-arginine와 GPLC의 투여가 고교 축구선수의 혈중 산화질소, 에너지기질 및 피로 물질 변화에 미치는 영향
양승훈 ( Seung Hoon Yang ),권훈겸 ( Hun Kyeom Kwon ),곽이섭 ( Yi Sub Kwak ) 한국운동생리학회 2015 운동과학 Vol.24 No.3
PURPOSE: The purpose of this study was to investigate the effects of L-arginine and GPLC supplementation on plasma nitric oxide, energy substrates and fatigue factors to football players. 16 football players were recruited from the high school and they were divided into two groups (L-arginine group, n=8; GPLC group, n=8). It is also aimed to evaluate the effect of ergogenic aids (L-arginine, GPLC) administration on the football players performance using Yo-Yo intermittent recovery test (Level 2), which is aerobic-anaerobic mixed exercise similar to actual football game. METHODS: Height, weight and body fat were measured before the test in 16 high school football players. At the experiment of pre-administration and post-administration of ergogenic aids (L-arginine, GPLC), blood was collected 3 times (before exercise, after exercise and 30 minutes at recovery stage) to measure and analyze nitric oxide in the blood, fatigue substances (lactate, ammonia and phosphorus) and energy substrate (Glucose and FFA) respectively. During aerobic-anaerobic mixed exercise, when ergogenic aids (L-arginine and GPLC) was administered to the football players, NO concentration is increased in two groups after administration compared to pre-administration at each stage. RESULTS: There was significant difference at the recovery stage to L-arginine administration group (p=.003). As for change of energy substrate, human serum glucose concentration decreased significantly in statistics at each stage to L-arginine group (pre, p=.014, post, p=.026, recovery p=.025), and decreased significantly right after exercise and at the recovery stage to GPLC group (p=.047, p=.000). The serum FFA (free fatty acids) concentration by the administration of ergogenic aids (L-arginine, GPLC) had no statistically significant difference in every stage. Among the fatigue substances, serum phosphorus concentration decreased significantly at each stage of L-arginine (p=.031, p=.002, p=.001), and decreased significantly at the recovery stage of GPLC group (p=.014). Ammonia concentration decreased significantly to L-arginine group more than GPLC group at each stage after administration compared to pre-administration (L-arginine: p=.005, p=.005, p=.003, GPLC: p=.002, p=.079, p=.003). And there were significant differences before exercise and at the recovery stage to GPLC group. Lactate decreased significantly at each stage after administration to L-arginine and it significantly decreased before exercise and right after exercise to GPLC like in ammonia (L-arginine: p=.012, p=.022, p=.017, GPLC: p=.006, p=.015). CONCLUSIONS: As a result of this research, it was found that NO expression significantly increased from L-arginine dosage group in time of recovery. The generated NO increased the supply and absorption of energy substrates in skeletal muscle metabolism through vasodilation, and decreased accumulation of fatigue substance and delayed the depletion of glucose by having an influence on the increase in blood flow by exercise. n addition, in order to use the method for increasing practical motion performance capability through this research result, it``s necessary to take into account a lot more diverse forms of exercise events, exercise intensity, time and frequency, etc. It is thought that there will be the need to do continuous research on this field later
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여자 초등학생의 신체활동과 심폐체력 및 신체구성 그리고 심혈관 위험인자와의 연관성
강현식 ( Hyun Sick Kang ),하창덕 ( Chang Duck Ha ),홍혜련 ( Hye Ryun Hong ),권훈겸 ( Hun Kyeom Kwon ),김성희 ( Seong Hee Kim ),우상구 ( Sang Koo Woo ) 한국운동생리학회(구 한국운동과학회) 2011 운동과학 Vol.20 No.4
강현식, 하창덕, 홍혜련, 권훈겸, 김성희, 우상구. 여자 초등학생의 신체활동량 및 강도와 심폐체력, 신체구성, 심혈관 위험인자와의 상관성. 운동과학, 제20권 제4호. 389-396, 2011. 본 연구의 목적은 기존의 횡단적 연구에서 비만 및 대사증후군의 예방 및 치료를 위해 제시된 13,000보수의 적정보수를 목표로 12주간의 신체활동 중재를 실시한 후, 신체활동량 및 강도와 심폐체력, 비만지표, 심혈관 위험인자의 상관성을 검증하는 것이었다. 본 연구의 대상자는 초등학교 여학생24명(11.79±0.78세)으로 하였고, 12주 신체활동 중재 전과 후에 신장, 체중, 체질량지수, 체지방율, 허리둘레, 최대산소섭취량, 중성지방, 총 콜레스테롤, 고밀도지단백 콜레스테롤, 혈당을 측정하여 분석하였으며, 12주간 1일 13,000보수의 신체활동을 하도록 권고하였다. 연구결과, 12주간의 신체활동 중재를 통해 신장, 체중, BMI, 심폐체력의 유의한 증가가 있는 것으로 나타났다. 신체활동량과 신체구성, 심폐체력, 심혈관질환 위험인자와의 상관성 분석 결과, 신체활동량은 최대산소섭취량과 수축기혈압과 유의한 상관성이 있는 것으로 나타났다. 신체활동 강도와 신체구성, 심폐체력, 심혈관질환 위험인자와의 상관성 분석 결과, 신장과 중강도 및 고강도 신체활동이 상관성이 있는 것으로 나타났다. 결론적으로 초등학교 여학생의 경우 심폐체력증진과 키 성장 자극 그리고 비만 및 심혈관질환 위험인자의 효과적인 개선을 위해서는 중등도 이상의 규칙적인 운동을 포함하여 상당한 수준의 신체활동량(예, 1일 13,000보수)이 필요하다는 사실을 의미하는 것으로 판단된다. Kang, H. S., Ha, C. D., Hong, H. R, Kwon, H. K., Kim, S. H., Woo, S. K. Correlations of physical activity with cardiorespiratory fitness, body composition, and cardiovascular risk factors in elementary school girls. Exercise Science. 20(4): 389-396, 2011. The purpose of current study was to investigate the correlations of physical activity with cardiorespiratory fitness (CRF), body composition, and cardiovascular risk factors in elementary school girls. A total of 24 girls (11.79±0.78 years) voluntarily participated in the physical activity intervention stuy. Before and after the intervention, all the participants underwent a series of measurements including body composition, obesity indices, CRF, and cardiovascular risk factors. Then each participant was invited to participate in a physical activity intervention targeting at 13,000 steps/day, which was predetermined in our preliminary study, for 12 weeks. All participants worn the Life-corder accelerometer to monitor their daily physical activities including its volume and intensity. Height, weight, body mass index, CRF were increased significantly after the 12-week PA intervention. PA volume was positively related to CRF and systolic blood pressure (SBP). Moderate and high PA intensities were positively relate to height growth. In conclusion, the current findings of the study suggest that substantial amount of physical activity (i.e., accumulated 13,000 steps per day) including regular exercise with moderate or higher intensities would be necessary for the improvements of in CRF, obesity indices, and cardiovascular risk factors as well as height growth.
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