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.

평압 · 저산소 환경에서의 단기간 트레이닝이 태권도 선수의 최대산소섭취량, erythropoietin 및 혈중젖산농도에 미치는 영향

문황운(Moon, Hwang-Woon),박훈영(Park, Hun-Young),선우섭(Sunoo, Sub),남상석(Nam, Sang-Seok) 한국체육과학회 2016 한국체육과학회지 Vol.25 No.2

This study was designed to examine the effect of short-term normobaric hypoxic training by reviewing the change of VO₂max, erythropoietin(EPO) and blood lactate level of Taekwondo players in high ground environment. Test subjects are 21 Taekwondo players: 16.5%O₂(2,000m altitude) environment training hypoxic group(HG) of 10, normal environment training control group(CG) of 11. Each group was analysed to examine VO₂max, EPO and blood lactate level before and after the 7days of training. As the result of research, there were changes in VO₂max and EPO before and after the training. However, they did not show the noticeable changes between the two groups. In case of blood lactate, HG shows more increase than CG, but, after 30 minutes and 3 minutes of training, HG shows decrease compared to CG. Through these results, hypoxic training intensity and period is assumed to be important to the training effect to elite players. In later research, the physical change needs to be studied by increasing intensity, period and frequency.

ICBM을 기반으로 한 무릎보호대의 기능 및 효과에 관한 연구

문황운(Moon, Hwang-Woon),최민희(Choi, Min-Hee),이재석(Lee, Jae-Suk) 한국체육과학회 2019 한국체육과학회지 Vol.28 No.3

The purpose of this study is to verify the gait measurement function of the knee sleeve equipped with an IMU(Inertial Measurement Unit) sensor based on ICBM(IoT, Cloud, Big data, and Mobile) and to verify the effect of wearing and not wearing the knee sleeve to provide basic data on the development of the knee sleeve based on ICBM which can analyze gait pattern and improve gait ability. The measurement accuracy of the IMU sensor was verified by comparing the accelerations measured by the IMU sensor attached t o the knee s leeve and the 3D M otion C apture S ystem while g ait measuring in 2 0 elderly persons over 60 years old. Also 16 subjects, age of 20’s, and 15 subjects, age of 60’s, were analyzed for the effect of wearing and not wearing the knee sleeve for blood lactate, blood glucose, steps, gait tempo, and heart rate when walking. The results of this study are as follows. As a result of comparing the difference between the acceleration values measured by the IMU sensor attached to the knee sleeve and the acceleration values of the mass center of IMU sensor calculated by the motion analysis with RMSE(Root Mean Squared Error), the RMSE on the x-axis is 1.154, the RMSE on the y-axis is 5.765, and the RMSE on the z-axis is 2.145. Correlation analysis of the acceleration values of the mass center of IMU sensor(MCI) calculated by the motion analysis, the acceleration values measured by the IMU sensor(IMU), and the acceleration value of knee center(KNE) calculated by the motion analysis showed that MCI and IMU showed no significant correlation between the x-axis and the y-axis, indicating a significant correlation in the z-axis. IMU and KNE did not show a significant correlation on the x-axis and the z-axis, but a significant correlation on the y-axis.

9개월간의 식이요법을 병행한 진동운동과 유산소운동이 비만 여성의 체력과 혈액성분에 미치는 영향

문황운 ( Hwang Woon Moon ),남상석 ( Sang Seok Nam ),선우섭 ( Sub Sunoo ) 한국운동영양학회 2006 Physical Activity and Nutrition (Phys Act Nutr) Vol.10 No.3

반복적인 무호흡 잠수 시 항산화 반응의 변화

문황운(Moon, Hwang-Woon),최윤진(Choi, Youn-Jin),김정원(Kim, Jeong-Weon),김제원(Kim, Ze-One) 한국체육과학회 2021 한국체육과학회지 Vol.30 No.5

This study is about changes in antioxidant response during repeated apnea diving. The subjects are 16 male university students. The method is to measure MDA, SOD, red blood cell, lactic acid, blood suger, blood and heart rate at rest, after 5, 10, 15 and 20 times of repeated apnea diving in 5M diving pool. One-way ANOVA with repeated measure was performed to verify the difference in the mean between periods, and the LSD method was performed for post-hoc testing if there was any significance between groups. the statistical significance level was set as α=.05. As a result, there were significant differences in white blood cells, red blood cells, hemoglobin, hematocrit, blood glucose, lactic acid, and heart rate changes according to the number of times and time, but there were no changes in MDA and SOD. This showed that the intensity of apnea diving was low in male college students and there was no significant difference due to physical adaptation. Therefore, in future studies, in-depth studies of various variables appearing during apnea diving in various environments and conditions are required.

어린이 수영 등급제 선진사례 연구

문황운(Moon, Hwang-Woon),서명석(Seo, Myoung-Suok),소민영(Sho, Min-Young),서원재(Seo, Won-Jae) 한국체육과학회 2021 한국체육과학회지 Vol.30 No.6

Purpose: Swimming industry is improving faster than the other types of sport industries and populations of participating swimming are promptly increasing. In particular, kid swimming education is obtaining huge concerns partially due to Sewallho accident. Currently, swimming education for kids including elementary schoolchild has not established a systematic curriculum and evaluation criteria. Prior studies posits that a sense of achievement and challenge are a significant motives of kids promoting their participation in sports. Given this, overseas countries have developed and adopted a systematic swimming programs and evaluation indicators. This study is to generate strategic insights in terms of development of kid swimming evaluation system. Research design, data, and methodology: The study employed multiple case-holistic designs to analyze overseas’ cases. Given the selection criteria, cases of German, Japan, USA, and England were selected and their swimming evaluation contents were analyzed. Results: The study found that selected cases has developed systematic programs at elementary school level and effectiveness of the programs were evaluated through the inter-connected assessment test. Moreover, overseas’ cases has established official programs and assessment systems to improve swimming ability at elementary school level. Conclusions: Valid swimming programs and assessment tools need to be developed and they need to be inter-connected to effectively manage its programs and evaluation systems. Further implications and directions were discussed. Key words: Swimming Ability, Assessment, multiple case-holistic designs

자동형 스텝퍼 운동 시 노인의 에너지소비량 및 운동 효과 분석

문황운(Moon, Hwang-Woon),최윤진(Chol, Yoon-Jin),김우석(Kim, Woo-Suk) 한국체육과학회 2022 한국체육과학회지 Vol.31 No.5

The purpose of this study is to verify the effect of an automatic stepper that can be an easy exercise for the elderly who are experiencing difficulties in physical activity at a point in time when the need for exercise and reduction of physical activity in the elderly is being emphasized through COVID-19. The purpose of this study is to investigate the physiological changes of a sedentary automatic stepper through changes in energy consumption and changes in vascular elasticity variables. The subjects of this study were 8 male and 9 female aged 83 years old. 30 minutes of automatic stepper exercise was performed. Blood pressure, brachial-ankle pulse wave velocity, arterial stiffness and lactic acid were measured before and after exercise, and energy consumption was measured through heart rate, oxygen intake, METs, and cumulative calorie consumption before and during exercise for 10 minutes, 20 minutes and 30 minutes. The results of this study showed that systolic, diastolic, and mean blood pressure all decreased after exercise in the male elderly, but there was no statistically significant change. In addition, the cumulative calorie consumption of both male and female elderly increased statistically significantly(p<.000), but there was no significant change in the vascular elasticity variable. This study tried to examine whether the effect of automatic stepper exercise can be applied to the elderly male and female, but only showed a significant increase in the cumulative energy consumption. In addition, changes in vascular elasticity were examined, but exercise intensity was low, and it was difficult to study vascular elasticity by sitting and continuing topical exercise. In future research, it is considered that it is necessary to develop an automatic stepper exercise program suitable for various subjects, such as the elderly, the disabled, and patients who need to exercise safely, and to examine the effect in depth with various variables.

저압ㆍ저산소 환경에서 4주간의 간헐적인 무산소성 운동 트레이닝이 골격근의 산소이용 능력에 미치는 영향

문황운(Moon Hwang-Woon),남상석(Nam Sang-Seok),박훈영(Park Hun-Yung),조홍래(Cho Hong-Rae),김승환(Kim Seung-Hwan),선우섭(Sun Woo-Sub) 한국체육과학회 2011 한국체육과학회지 Vol.20 No.4

This study was designed to determine changes in oxygenation of skeletal muscle following intermittent anaerobic training in hypobaric hypoxia. The subjects of study were consisted of each 22 male college students. The subjects were randomly assigned to either a sea-level(n=12) or a hypobaric hypoxia(n=10) traning group. Two groups of subjects trained 3 times a week for a total of 4 wk on a treadmill. Main results of the present study were as follows: 1) body weight and body fat were significantly (p<.05) decreased in hypobaric hypoxia group. and lean body mass were tend to decrease in both two groups. 2) reticulocyte and RBC, oxygen-carrying capacity, were increased in group of sea-level, decreased in group of hypobaric hypoxia, but Hb was increased in both of two groups, Hct was slightly increased in sea-level group only. 3) Hct was slightly increased in group of sea-level group only. 4) Of several data obtained from oxygenated skeletal muscle, △HHb was significantly (p<.05) decreased at 10th minute of exercise in sea-level group and was significantly (p<.05) decreased during exercise From 10-20 minutes of exercise in hypobaric hypoxia group. TOI was significantly (p<.05) increased during exercise in both group. It was concluded that the anaerobic training would have positive effects on body composition and oxygen utilization capacity in skeletal muscle.

근 기능 개선 및 근 비대를 위한 저산소 환경에서의 저항성 트레이닝의 효용성 검증 - 문헌적 고찰

문황운(Hwang-Woon Moon),김정원(Jeong-Weon Kim) 한국발육발달학회 2021 한국발육발달학회지 Vol.29 No.3

We are generally believed that optimal muscular function and hypertrophy gains are induced via moderate- or high-intensity resistance training, equivalent to at least 70% of an individual’s 1 repetition maximum. In recent years, systemic hypoxic stress has emerged as a stimulation condition that can induce more physiological and biochemical changes caused by resistance exercise. Hypoxic stress result in changes in neuromotor control, metabolic changes, hormonal changes, cellular swelling, and intracellular signaling pathways, similar to the effects of resistance exercise. The combination of hypoxic stress and resistance exercise is expected to have a greater effect on the improvement of muscular function and hypertrophy. Therefore, we examined the previous studies for understand the concept of intermittent hypoxic resistance training (IHRT) and its effectiveness, and to grasp the principle of IHRT to improve muscular function and hypertrophy. However, few investigations have examined the combination effects of hypoxic stress and resistance exercise, and as such it is difficult to make recommendations for implementing IHRT based on current understanding. It should also be acknowledged that a number of mechanisms proposed to facilitate the augmented response to IHRT remain poorly understood, particularly the systemic role of metabolic, hormonal, cellular swelling, and intracellular signaling pathways. Future research should examine the various physiological and biochemical mechanism and performance to resistance exercise in hypoxic condition and training in systemic hypoxic condition.

스키지도자 교육프로그램 및 평가에 대한 해외 선진사례 비교 분석 연구: 캐나다를 중심으로

문황운(Moon, Hwang-Woon),김효림(Kim, Hyo-Rim),서명석(Seo, Myung-Seok),김제원(Kim, Ze-One) 한국체육과학회 2023 한국체육과학회지 Vol.32 No.6

The purpose This study compared the ski instructor education system of Canada, known as an advanced country in overseas skiing, to strengthen the capabilities and cultivate leadership of domestic ski instructors. Accordingly, the purpose of the study is to derive implications for the curriculum, content, and evaluation of domestic ski instructors. This study analyzed data using a literature analysis method. In order to select cases for study in this study, Canadas ski instructor system was set as an advanced example based on countries that have consistently maintained winning records in various world competitions. Canadas ski instructor curriculum, content, and evaluation were set as a unit of analysis to collect data and conduct content analysis. As a result of the study, there is no pre-certification education program in the domestic ski instructor training program, and the qualification system is implemented through written experiments and practical ability tests. Accordingly, it is believed that if new field-centered ski instructor education programs and certification contents are developed and managed through the Canadian ski instructor qualification system, the ski participation population will increase and the educational capabilities of ski instructors will be improved.