6주간의 평압 · 저산소 트레이닝이 비만여성의 신체성분, 혈중지질, 에너지대사 호르몬 및 운동부하량에 미치는 영향

선우섭(Sunoo, Sub),남상석(Nam, Sang-Seok) 한국체육과학회 2015 한국체육과학회지 Vol.24 No.4

This study was designed to investigate the effect of aerobic training in normobaric hypoxia. 21 obese and middle aged women(above 30% body fat) were volunteered to participate in the study subjects and were divided into two groups such as normobaric normoxia and 2,000m normobaric hypoxia. Training consisted of bike ergometer(30min) and treadmill exercise(30min) in 75%HRmax that developed Miyashita on 1985. Exercise frequency and duration was 1 hour a day, 5days a week, 6 weeks. Body composition, blood lipid and metabolic related hormone were measured pre and post. The results of the present study were as followed: 1. Muscle mass was significantly decreased in both group. 2. In the blood lipid, HDL in both group was significantly increased. TC and LDL was detected a tendency to decrease in normobaric hypoxic group while a tendency to increase was detected in control group. 3. In metabolism-related hormone, norepinephrine was significantly increased and T₄ was significantly decreased in both group but cortisol was significantly decreased in normobaric hypoxic group. TG and GH was detected a tendency to increase in normobaric hypoxic group while a tendency to decrease was detected in control group.

저압,저산소 노출이 대학농구선수의 심폐기능 및 혈중 산소운반능력에 미치는 영향

선우섭 ( Sub Sunoo ),김현국 ( Hyun Kook Kim ),황경식 ( Kyung Sheek Hwang ) 한국운동영양학회 2005 Physical Activity and Nutrition (Phys Act Nutr) Vol.9 No.1

The purpose of this study was to propose types of hypobaric hypoxic training for cardiopulmonary function and oxygen transporting capacity. Eighteen university basketball players were divided into H.L group (Living High & Training Low, n = 9) and L.L group (Living Low & Training Low, n = 9) according to hypoxic exposure. Oxygen transporting capacity, body composition, maximal oxygen uptake, blood lactate concentration, cardiopulmonary function and heart rate were investigated. Results were as follows. 1. There was no significant difference on body composition inter group or among several test time. 2. After exposure, heart rate was significantly low in H.L group. And there was significant difference inter group or among several test time. 3. Maximal oxygen uptake was significantly high by exercise time increase but there was no significant difference inter group or among several test time. 4. Blood lactate concentration was increased after exposure but there was no significant difference inter group or among several test time. 5. According to training period increase, there was no significant difference on RBC, EPO but Hct, Hb concentration were significantly lower than after Iweek exposure. But there was no significant difference inter group or among several test time. 6. In hypobaric hypoxic environment, heart rate during sleeping was significantly decrease as time goes by. 7. In hypobaric hypoxic environment, oxygen saturation during sleeping was significantly increase as time goes by. As a result, passive exposure in hypobaric hypoxic environment was not significantly efficient on body composition, blood component and blood lactate concentration but heart rate during exercising and sleeping was significantly low and exercise time and maximal oxygen uptake increased. It could be a possibility.

다양한 저산소 환경에서 80%HRmax의 상대강도 자전거 운동 시 혈중 젖산농도 및 혈액가스 반응

선우섭(Sunoo, Sub),남상석(Nam, Sang-Seok) 한국체육과학회 2015 한국체육과학회지 Vol.24 No.4

The purpose of this study was investigate that response of blood lactate concentration and blood gas during 80%HRmax cycle exercise and account for exercise performance decrease through acid-base balance. Ten healthy men participated in the study. The subject performed 30min cycle exercise at sea level, 2,000 m normobaric hypoxic environment, and 4,000 m normobaric hypoxic environment. Blood lactate concentration, PO₂. PCO₂, pH, HCO₃-, and ScO₂ during cycle exercise were measured. The collected data were processed statistically by repeated one-way ANOVA and LSD. As a results, cycle load for maintain 80%HRmax at 12.8% O₂ significantly decreased compared to 16.5% O₂ and 20.9% O₂. Blood lactate concentration at 12.8% O₂ was significant increase compared to 20.9% O₂ and presented increase tendency compared to 16.5% O₂. Meanwhile, pH at 12.8% O₂ presented constant or increase tendency compared to 20.9% O₂, despite blood lactate concentration at 12.8% O₂ was significant increase compared to 20.9% O₂. At 12.8% O₂, PO₂ and PCO₂ was significant decrease compared to all other simulated environments. HCO₃- presented most decrease tendency compared to all other simulated environments. Overall, blood lactate concentration at 12.8% O₂ was highest because carbohydrate dependence increase as the oxygen partial pressure is decrease. Also, despite blood lactate concentration was significant increase, pH maintained. These results that PCO₂ is removed through pulmonary ventilation increase caused by hypoxic ventilation response.

3,000m 상당고도에서의 간헐적인 저압ㆍ저산소 수면노출이 핀수영 선수의 혈중산소운반능력과 최대산소섭취량에 미치는 영향

선우섭(Sunoo Sub),남상석(Nam Sang-Seok),황경식(Hwang Kyung-Seek),박훈영(Park Hun-Young) 한국체육과학회 2008 한국체육과학회지 Vol.17 No.4

The purpose of this study was to examine the effects of hypobaric hypoxic exposure on maximal oxygen uptake and oxygen transport system in national fin-swimmers. The 17 swimmers, regardless of sex, were divided into the experimental group(n=8) and the control group(n=9). After taking passive acclimation training that was working out at the sea level, sleeping at 3,000m for 8 hours a day, 3 days a week, four weeks to the experimental group, Oxygen uptake, oxygen transporting capacity in blood, and effects on time records, by treadmill graded submaximal and maximal exercise were surveyed as followes; No significant difference on body composition, heart rate, maximal oxygen uptake, blood lactate concentration during exercise and, RBC, Hb, EPO and 2,3-DPG was shown due to training types and time. Time records during passive exposure acclimation contained 3 new records and 1 national records of swimmers of the experimental group. Accordingly, passive acclimation training under various hypobaric hypoxic condition in elite sports players is needed.

구기 및 투기선수들의 다리신전 Power 특성

선우섭(Sunoo sub),손두옥(Son du-ok),김형돈(Kim hyung-don),황경식(Hwang kyung-sheek),최조연(Choi jo-yeon) 한국체육과학회 2000 한국체육과학회지 Vol.9 No.2

The purpose of this study was to offer the basic data for the effective power training program. And the ball game athletes and the martial art athletes - they had a different exercise pattern - were chosen in the study as subjects. After we measured the power of physique and various leg extension power movement, we examined the power characteristics of each sports and group. The results of study were as follows. 1. Among the physique factors except the rate of body fat and the calf length, the ball game group was significantly superior to the martial art group. Particularly thigh girth of any other group's, the calf girth of rugby and handball was so. 2. For the reaction time of the whole body largely controlled by the function of nervous system, that of handball athletes was faster than that of any other ball game group's and that of taekwondo athletes was faster than that of any other martial art group's. But there was no significantly difference between the ball game group and the martial art group. 3. In terms of the sargent jump and the standing board jump, that of the ball game group's as significantly higher than that of the martial art group's. And volleyball athletes were outstanding among the ball game group, judo athletes were so among the martial art group. 4. For maximum anaerobic power(㎏m/L.B.M./sec), that of martial art group's was significantly high. 5. Total leg extension power(L.E.P.) at the load body weight, 120% body weight, and 80% body weight appeared high in order of judo, rugby, volleyball, handball, taekwondo, boxing and it appeared significantly low in martial art group. But there was little difference between group, when we made a comparison with total L.E.P./L.B.M. When we divided total L.E.P. into force, speed factor and then compared, the force factor of the ball game group's was significantly higher than that of the martial art group's in all load conditions. In addition to, the speed factor of the ball game group's was significantly higher than that of the martial art group's in the load of 80% body weight. 6. Leg extension speed(L.E.S.) of the ball game group's was significantly faster than that of the martial art group's in all load conditions. As our results above, the ball game group had the good speed factor among the power composition factor. So the ball game group needs muscle-strength-training by high-load-weight training, the martial art group needs complex forcing training of force and speed factor.

Disciplinary Sport Physiology - : The Effects of Detraining on Muscle Strength

김형돈,선우섭 ( Hyung Don Kim,Sub Sunoo ) 한국체육학회 1995 국제스포츠과학 학술대회 Vol.1995 No.-

다양한 평압·저산소 환경에서의 고정부하 자전거 운동 시 혈액의 산ㆍ염기 반응

문황운(Moon, Hwang-Woon),선우섭(Sunoo, Sub),박훈영(Park, Hyun-Young),함주호(Ham, Joo-Ho),남상석(Nam, Sang-Seok) 한국체육과학회 2015 한국체육과학회지 Vol.24 No.6

Our study aimed to assess the effects of hypoxia on aerobic exercise capacity at high altitudes through analysis of aerobic exercise metabolism and blood gas in order to explanation of blood acid-base equilibrium regulation and determine the optimal altitude for exercise training. The study included 11 Korean male university students. The oxygen concentration of simulated environments included 20.9% O₂, 16.5% O₂, 14.5% O₂, 12.8% O₂, and 11.2% O₂. Exercise test was performed with 3~6 days interval. Exercise intensity was established cycle exercise load(watt) correspond to 70% HRmax at sea-level. As a result, during 30 minutes exercise, blood acid-base equilibrium maintained through respiratory compensation caused by metabolic acidosis at 14.5% and 16.5% oxygen concentration but not maintained at 12.8% and 11.2% oxygen concentration compared to sea-level. Therefore, altitude exercise training at oxygen levels of 12.8% O₂ and below might improve blood acid-base equilibrium and aerobic exercise capacity.

태권도 시범자와 경기자의 등속성 근력에 관한 연구

김영우(Kim Young-Woo),선우섭(Sunoo Sub),윤우상(Yoon Woo-Sang),최조연(Choi Jo-Yeon) 한국체육과학회 2001 한국체육과학회지 Vol.10 No.1

The purpose of this study is compare the maximal isokinetic strength at 60ㆍ180ㆍ240deg/sec of knee extension and flexion, as well as ipsilateral ratio and bilateral ratio at 60deg/sec between demonstrator and athletes in collegiate taekwondo players. There was no significant difference in maximal isokinetic strength at 60ㆍ180ㆍ240deg/sec of knee extension and flexion. Due to the possible injury, the same side strength ratio (ipsilateral strength balance) and both side strength ratio (bilateral strength balance) at 60deg/sec condition was not performed.

2주간 서로 다른 저산소 환경에서의 간헐적인 트레이닝이 에너지대사와 골격근 산소화 농도에 미치는 영향

박훈영(Park, Hun-Young),선우섭(Sunoo, Sub),남상석(Nam, Sang-Seok) 한국체육과학회 2016 한국체육과학회지 Vol.25 No.3

This study was designed to examine the effect of 2weeks living low training high (LLTH) under 2,000 m and 3,000 m simulated hypoxic environments on exercise load, oxygen delivering capacity of the blood, energy metabolism, and skeletal muscle oxygenations. Twenty eight male college students participated in the study as subjects and divided into three groups such as control group (n=8), 2,000 m LLTH group (n=10) and 3,000 m LLTH group (n=10). They performed cycle exercise (30 min) and treadmill exercise (30 min) within 80%HRmax developed Miyashita on 1985. Exercise frequency was 1hour, 3days a week, 2weeks. At rest and during exercise, exercise load, Hb concentration, Hct, %SPO₂, VO₂, blood lactate level, △O₂Hb, △HHb, and TOI were measured before and after training (Pre and Post). As a result, 2weeks LLTH under 2,000 m and 3,000 m simulated hypoxic environments does not induced improvement on oxygen delivering capacity of the blood through Hb concentration and Hct. However, energy metabolism and skeletal muscle oxygenation have been improved by LLTH. These changes improve oxygen supply to muscle tissue, oxidative phosphorylation process in mitochondria, lactate tolerance of the blood, and exercise performance. Also, these physiological changes presented a similar pattern in the 2,000 m and 3,000 m LLTH groups. In later research, various studies need to the effect of LLTH under simulated hypoxic environments on various physiological variables and exercise performance.

고정형 및 혼합형 저산소 환경에서의 4주간 IHT(intermittent hypoxic training)가 혈중산소운반능력, 에너지대사 및 골격근 산소화 농도에 미치는 영향

박훈영(Park, Hun-Young),선우섭(Sunoo, Sub),남상석(Nam, Sang-Seok) 한국체육과학회 2016 한국체육과학회지 Vol.25 No.3

This study was designed to examine the effect of 4 weeks fixed and mixed intermittent hypoxic training (IHT) on exercise load, oxygen delivering capacity of the blood, energy metabolism, and skeletal muscle oxygenations. Thirty three male college students participated in the study as subjects and divided into three groups such as control group (n=11) performed training at sea-level, fixed IHT group (n=11) performed training at 16.5% O₂, and mixed IHT group (n=11) performed training at 14.5% O₂ (~2 weeks) and 16.5% O₂(~4 weeks). They performed cycle exercise (30 min) and treadmill exercise (30 min) within 80%HRmax developed Miyashita et al. on 1985. Exercise frequency was 1hour, 3days per a week, 4 weeks. At rest and during exercise, exercise load, Hb concentration, Hct, %SPO₂, VO₂, blood lactate level, △O₂Hb, △HHb, and TOI was measured before and after training (Pre and Post) in each groups. As a result, 4weeks fixed and mixed IHT does not induced improvement on oxygen delivering capacity of the blood through Hb concentration and Hct. However, exercise performance increased by fixed and mixed IHT through improvement of oxygen flux to muscle tissue, exercise economy, and lactate tolerance of the blood. Also, these physiological improvement appeared effective in mixed IHT compared with fixed IHT. In later research, various studies need to investigation of the effect to fixed and mixed IHT on oxygen flux, oxygen delivering capacity, lactate tolerance of the blood, exercise performance, and time trial in elite athletes.