신체활동과 교통수단이 비만 남중생의 대사증후군위험인자, HOMA-IR, 신체활동량에 미치는 영향

주희철(Hee Chol Joo),양승원(Seung Won Yang) 한국발육발달학회 2015 한국발육발달학회지 Vol.23 No.1

The purpose of this study was to examine differences in risk factors of metabolic syndrome, serum lipid, insulin, HOMA-IR, and physical activity levels in obese male middle school students, by physical activities and transportation modes. Regarding risk factors of metabolic syndrome, there were significant interactions between periods and groups about belly(p<.05), HDL-C(p<.05), and Glucose(p<.05). Regarding serum lipid, there were significant interactions between periods and groups about TC(p<.01) and LDL-C(p<.05). And there were signifm icant interactions between periods and groups regarding Insulin(p<.01) and HOMAIR( p<.05), respectively. Regarding transportation usage based on 1-day average and moderate physical activities, there were significant interactions between periods and groups about the number of steps(p<.01) and calorie(p<.05), respectively. Our study result shows that 12-week moderate physical activities and going to and from school by walking was effective for risk factors of metabolic syndrome, serum lipid, insulin, and HOMA-IR in group A. Besides, it is considered that efficient physical activities and change of lifestyle are required for obese male middle school students, through 12-week moderate physical activities and going to and from school by walking. Therefore it is considered that physical education class and physical activities are effctive to improve risk factors of metabolic syndrome in obese male middle school students.

수퍼 써키트웨이트트레이닝과 써키트웨이트트레이닝이 여성의 신체구성과 심폐기능에 미치는 효과

이석인(Lee Suk In),이상연(Lee Sang Yeoun),이신언(Lee Shin Un),주희철(Joo Hee Chol),황종문(Hwang Jong Moon),이충일(Lee Chung ll) 한국사회체육학회 2000 한국사회체육학회지 Vol.14 No.-

This study has found the following results after analyzing the effects of super circuit weight training and circuit training on body composition and candiorespiratory functions before and after training. 20 female subjects were selected from "J" health center in Seoul and divided into 2 groups for super circuit weight training(G-1) and circuit training(G-2). The subjects participated in 12 week training program. 1. Comparison on body composition before and after training Body weight significantly decreased in both groups while Lean body mass increased in both groups without significance. % Fat and fat weight decreased significantly in both groups. The decrease rate and increase rate of body weight, % fat, fat weight, and lean body mass was higher in the super circuit weight training group(G-1) than circuit weight training group(G-2). 2. Comparison on blood pressure before and after training both groups showed significant decrease in systolic and diastolic blood pressure. But the decrease rate was higher in super circuit weight training group (G-1) than circuit weight training group(G-2). 3. Comparison on cardiorespiratory function before and after training Resting heart rate was significantly decreased in both groups with the decrease rate higher in the super circuit weight training group(G-1) than circuit weight training group(G-2). Signifcant increase of VO2 max was assessed in both groups and the increase rate of VO max was higher in Super circuit weight training group(G-1) than circuit weight training group(G-2). According to the results from the study significant changes to body composition, blood pressure and cardiorespiratory functions were assessed in both groups after training. Based on the findings above, where super circuit weight training group was found to be more effective, we'd recommand super circuit weight training program for effective weight reduction and improvement of cardiorespiratory functions.

자기건강 인식에 따른 건강증진 생활양식 차이 분석

이석인,주희철 한국스포츠리서치 2003 한국 스포츠 리서치 Vol.14 No.2

This study targets students in four colleges and examines their lifestyles in view of health. It is designed to provide a basic educational material for the healthy lifestyle of college students. The study target was 472 students who took classes related to Health and PE as for their cultural subjects in four different colleges. The surveyed materials were analyzed with SPSSWIN10.0. The results of the study are as follows. 1. The level of practice regarding the students lifestyle of promoting health was obtained by each factor with average or mean (M) and standard deviation (SD). 2. To verity the difference of lifestyles according to the awareness of ones health, one-way ANOVA was conducted. 3. To verify the difference of lifestyles between the students who have a high level of the awareness of ones health and the students who have a low level of the awareness of ones health, t-test was conducted. The results of the study through the study method and procedure are as follows. 1. The lifestyle of unhealthy students turns out to be better than that of healthy students. It is concluded that the awareness of ones health affects ones lifestyle. 2. It shows that most students regardless of their awareness of health have high interests in health management. In particular, as a result of research, students show very high interest in professional health management alone, resulting in total mean 3.50 (SD = .56) out of the lifestyle areas of the total. 3. It is examined that students lifestyle is low in overall. Seen from the results, in the overall lifestyles, the arithmetic average 2.50 and its surroundings are most common. And there are some factors that are far beyond the average. However, the single factor of more than 3.50, which is the upper 30% level, is the professional health management (SD = 0.56). It shows that students overall lifestyle is inappropriate. 4. As part of the efforts to promote public health, it is necessary for college students to make their lifestyles or habits sound and healthy from the beginning. Especially, there is a movement that tries to change the term adult disease into habit disease. It acknowledges that the disease coming from adulthood comes mainly from wrong lifestyles or bad habits of life. 5. Along with the social efforts to manage and maintain public health, it is believed to be necessary for colleges to develop a curriculum and operate it in consideration of embracing this measure into their school policy.

윈드서핑선수 체력 트레이닝을 위한 프로그램개발에 관한 연구

이석인,주희철,손재윤 중앙대학교 스포츠과학연구소 2002 體育硏究 Vol.- No.16

The purpose of this research is to investigate training methods and physiological responses according to the indensity through analyzing researches in this area and develope program models for physical training in order to find an effective training method for windsurfing players. 1. Training for Muscular Strength Muscular strength is an important component for windsurfing player to move fast with less fatigue. Weight training is commely used to imporve muscular strength. It is proper for beginners to use loads in the range of 60% to 70% of one repetition maximum, and for athletes in the range of 80% to 100% of 1RM. It is required to do 1 rep at 12-15 RM for 1-2 seconds, and 1 rep at 5-10RM for 2-3 seconds. Moreover, it is adequate for beginners to do 3-5 sets, and for athletes to do 5-7 sets. Handling heavy weights in the pursuit of strength will require a recovery of 3-5 minutes between sets. As 48 hours should elapse between sessions, it is necessary to exercise at least three times a week. Finally, it is important to increase repetitions before increasing the load. The load should be increased by 3-5% of one repetiton maximum after 4 weeks. 2. Training for Muscular Endurance When these ways of training are conducted in good order, it has a good effect on windsurfing players: Chin→up→Hanging-out →Bar →Climbing the rope →Jumping in a crouch →Hanging the rope →Jump over the bench →lifting a sandbag on the top side of the foot →Throwing the ball in the position of lying down 3. Whole body endurance Whole body endurance is usually regarded as cardiovascular endurance or stamina. To improve the whole body endurance, players are trained by the methods such as long-distance run, Country cross, rope jumping, and swimming. Long-distance running is an essential item for windsurfing players to build up their physical strength, especially cardiovascular function. It is effective to run 4-5km at 150-170 heart rates. For rope jumping, exercise 3-5 rounds and do 3 minutes for one round. The significant components of physical strength for windsurfing players are muscular strength, muscular endurance, and whole body strength. The training for these factors would have an important influence on windsurfing players.

단백질 보충제와 크레아틴 보충제

이석인,주희철 중앙대학교 스포츠과학연구소 2000 體育硏究 Vol.- No.13

Based on available literature, this study has found the results as follows. 1. Protein Supplementation For bodybuilders to increase their weight and muscle volume, it is effective to take suitable amount of anabolic amino acids, BCAA(branced chain amino acids, GH(growth hormone) amino acid, and glutamine amino acid. 2. Creatin Supplementation Based on availbable literature, short-term creatine supplementation enhances sprint performance as well as maximal strength and power during maximal effort muscle contractions. Moreover, long-term supplementation of creatine has been reported to promote significantly greater gains in strength, sprint performance, and fat free mass during training in comparison to matched-paired placebo group(Becque, B. et al, 1997). The only side effect of creatine supplementation during exercise performance is safe and effective. Therefore it is recommended that bodybuilders take protein supplementation and creatine supplementation during training to improve muscle development and enhance strength.