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고강도 운동 시 식이형태가 혈중 그렐린과 렙틴에 미치는 영향
류형수(Ryu, Hyung-Soo),정현령(Jung, Hyun-Lyung),강호율(Kang, Ho-Youl),류종식(Ryu, Jong-Sik) 한국체육과학회 2018 한국체육과학회지 Vol.27 No.4
The purpose of this study was to determine the effects of the difference between high carbohydrate diet(the traditional Korean diet pattern; KFG) and high fat diet(the traditional Western diet pattern; WFG) on plasma ghrelin and leptin responses in 3-day high-intensity aerobic exercise. The college male students were voluntary participated in this investigation(N=18). Each subject was belonged to either KFG group(n=9) and WFG(n=9). All subjects received 3,000 kcal meal per day in either KFG or WFG for 3 days. The subjects performed treadmill running at the 70% VO2max for 60min on Day1 Day 2 and Day3. Fasting blood samples were drawn from forearm vein and analyzed for lactate, glucose, insulin, leptin, triglyceride, free fat acid(FFA) and ghrelin. Plasma ghrelin levels in KFG were significantly lower than that of WFG on Day 4 (p<.05), but leptin levels were not. Plasma lactate concentrations in KFG was significantly higher than those in WFG (p<.05). Plasma glucose, insulin, triglyceride and FFA levels were not significantly different between KFG and WFG. Therefore, the results of the current study suggest that the high carbohydrate meal like KFG have positive effects on decreasing plasma ghrelin that lessens hunger sensation.
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감초탕 섭취가 고강도 저항성 운동 후 근부상, 혈중 코티졸, 테스토스테론 및 인슐린 민감도에 미치는 영향
정현령 ( Hyun Lyung Jung ),나현종 ( Hyun Jong Na ),김판수 ( Pan Soo Kim ),류형수 ( Hyung Soo Ryu ),강호율 ( Ho Youl Kang ) 대한본초학회 2015 大韓本草學會誌 Vol.30 No.2
Objectives : The aim of this study was to investigate the effects of licorice supplementation on muscle injury, plasma cortisol, testosterone and insulin sensitivity after high intensity resistance exercise. Methods : The fourteen health college male students were voluntarily participated in this study and were randomly divided into 2 groups: Control group (CON, n=7), Licorice group (LR, n=7). LR group ingested 2 g/time of licorice extract (mixed with 100 ml of water) two times/day for 10 days while the CON group ingested 100 ml of water. All subjects performed a high intensity resistance exercise (half-squat, 8 RM at 80% one-repetition maximum, 5 sets, 1min rest). Blood samples were collect before (-7) and after (0) licorice supplementation, and then 1 day, 2 day and 3 day post exercise. After 10 day treatment, plasma creatine kinase, cortisol, testosterone, glucose, insulin were measured. To determine the insulin sensitivity, HOMA-IR was calculated. Results : Plasma creatine kinase activities were significantly elevated after exercise, but there was not different between two groups. The plasma cortisol and testosterone levels were not significantly different between two groups. Plasma glucose levels were increased at 1 day and 2 day after exercise in the LR comparing with CON group ( P<0.05) but plasma insulin levels were significantly lower in comparison with CON. HOMA-IR were significantly lower in the LR than CON group at 0 day to 3 day ( P<0.05). Conclusions : The results of the current study suggest that licorice supplementation for 10 days might not attenuate the high-intensity exercise-induce muscle injury but may enhance the whole-body insulin sensitivity.
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