폐경기 후 여성의 MTHFR C677T 유전자다형성간 심폐능력, 신체구성, 혈중 Homocysteine 및 Folate 농도의 차이

정용민(Yong Min Chung),이삼준(Sam Jun Lee),변재종(Jae Jong Byun) 한국사회체육학회 2010 한국사회체육학회지 Vol.0 No.41

This study was to investigate differences among cardiorespiratory fitness, body composition, and homocysteine and folate in post-menopausal women Mthfr polymorphism genotype were classified into CC genotype(n=149), CT genotype(n=216), and TT genotype(n=57). Statistical analysis was performed using one-way ANOVA followed by Duncan post-hoc test. The data are presented as the mean ± SEM. The differences were considered significant at p<.05. Our results revealed that MTHFR polymorphism genotype resulted in significant increase in the CC genotype and CT genotype compared to TT genotype in folate and muscle mass, however, MTHFR polymorphism genotype resulted in significant increase in the TT genotype compared to CC and CT genotype in tHcy. MTHFR polymorphism genotype resulted in not significant difference in the CC genotype and CT genotype compared to TT genotype in fat mass and cardiorespiratory fitness. In conclusions, TT genotype was exposed to the disease in postmenopausal women. In the following study, we seek to change the physiological variables on exercise treatment according to the MTHFR polymorphism genotype.

여자중학생의 체력과 신체적 자기개념의 관계

정용민(Chung Yong-Min) 한국코칭능력개발원 2007 코칭능력개발지 Vol.9 No.2

줄넘기와 걷기를 동반한 요가수련 실시가 비만아동의 성장호르몬과 대사성증후군 위험인자 및 신체구성에 미치는 영향

정용민(Yong-Min Chung) 한국엔터테인먼트산업학회 2014 한국엔터테인먼트산업학회논문지 Vol.8 No.1

본 연구는 줄넘기와 걷기를 동반한 요가수련 실시가 비만아동의 성장호르몬, 대사성증후군의 위험인자(TC, TG, HDL-C, LDL-C, 허리둘레/엉덩이둘레(WHR) 및 신체구성(체중, 체지방률, 근육량)에 미치는 영향을 알아보기 위함이다. 연구대상은 체지방률이 30% 이상인 초등학교 5-6학년 남학생 16명으로 하였으며, 줄넘기와 걷기를 동반하여 요가수련을 실시한 운동집단 8명과 대조집단 8명으로 구분하였다. 연구결과 운동전?후의 비교에서 운동집단은 운동 후 성장호르몬의 유의한 증가를 보였으며, HDL-C는 유의한 증가를 그리고 TC, TG, LDL-C, WHR은 유의한 감소를 나타내었다. 체중과 체지방률은 유의한 감소를 보였고, 근육량은 유의한 증가를 보였다. 그러나 대조집단에서는 모든 변인에서 사전, 사후 유의차가 나타나지 않았다. 운동 후 변인들에 대한 운동집단과 대조집단 간의 공변량 분석(ANCOVA)을 실시한 결과 성장호르몬과 대사성증후군 위험인자 및 신체구성의 체중, 체지방률, 근육량 모두에서 운동집단과 대조집단 간 유의한 차이가 나타나 줄넘기와 걷기를 동반하여 요가수련을 실시하는 형태의 운동방법이 비만아동의 비만해소에 효과적인 방법으로 나타났다. The purpose of this study was to investigate the effect of yoga exercise with jumping rope and walking on the growth hormone, risk factors of metabolic syndrome (TC, TG, HDL-C, LDL-C, Waist Hip Ratio(WHR) and body composition(weight, % fat, muscle mass) of obese children. 16 elementary school grades 5, 6 boys whose body fat was more than 30% were included in this study, and divided into eight control group and eight exercise complex group. Results of the study, compared before and after exercise, exercise group showed significant increase in growth hormone and HDL-C, body mass, and significant decrease in TC, TG, LDL-C, WHR, weight, and % fat in after exercise. However, all of the variables in the control group did not show significant differences compared pre and post. Result of ANCOVA for variables of after exercise as covariance before exercise, growth hormone, risk factors of metabolic syndrome and body composition showed significant difference between exercise group and control group. yoga exercise with jumping rope and walking style has become an effective way to resolve the obesity of children.

고등학교 운동선수의 사회불안, 스포츠 경쟁불안, 자존감이 공격성에 미치는 영향

정용민(Chung Yong-Min) 한국체육과학회 2009 한국체육과학회지 Vol.18 No.4

This study is to provide fundamental data to manage plans assisting positive social relationships in addition to reducing highschool athletes' aggression by making a close investigation into mediation and causal relationships of sports competitive anxiety, social anxiety and self-esteem as related variables affecting aggression of highschool athletes, to grope for plans to reduce aggression such as violent action, anger and hostility of juvenile athletes. The research target was B metropolitan city highschool athletes, 588 athletes of 21 items. For data management, SPSS/PC+16.0 and AMOS16.0 program for WINDOWS was used. Confirmatory factor analysis was carried out to examine the validity of the measurement instrument. The following results were acquired by executing Covariance structure analysis on causal relationships between sports competition anxiety, social anxiety, self-esteem and aggression. Sports competition anxiety of highschool athletes had significantly positive influence on aggression. Social anxiety of highschool athletes had significantly positive influence on aggression. Self-esteem of highschool athletes had negative influence on aggression. Sports competition anxiety of highschool athletes had significantly negative influence on self-esteem. Social anxiety of highschool athletes had significantly positive influence on self-esteem. Self-esteem of highschool athletes functioned as the mediator between sports competition anxiety, social anxiety and aggression. As the conclusion, concrete plan needs to be found to reduce sports competition anxiety and social anxiety as well as to elevate personal self-esteem of athletes for the reduction of highschool athletes' aggression.

보디빌더의 Set훈련방법의 차이가 근 성장 호르몬의 분비에 미치는 영향

정용민(Chung Yong-Min),방현석(Bang Hyun-Seok) 한국체육과학회 2009 한국체육과학회지 Vol.18 No.2

The purpose of this research is to clarify the effects of difference of set training metho of bodybuilding athletes on secretion of growth hormone, and to propose basic data for designing of program that can effectively improve muscle mass of the bodybuilders. The research subjects were chosen to be 24 bodybuilders in their 20s that are preparing to run in local tournament held in some 15 weeks among athletes that accomplished scores of 3rd rank or higher in each weight class in tournaments of metro city or province scale among athletes registered with 'B' metro city bodybuilding association, and were classified randomly by the 8 persons in ascending set group, descending set group and drop set group. As for data processing, paired t-test was performed before and after exercise on growth hormone to verify 12 weeks exercise effects by each set training method by using SPSS 17.0, and to verify the difference by the resistance training method of growth hormone secretion amount after 12 weeks exercise, the research performed covariance analysis among the groups with growth hormone as covariance. The three groups GH(growth hormone), IGF-1 and testosterone all showed significant difference before and after exercise, however Cortisol did not show any change. While GH, IGF-1 and testosterone showed significant difference among the groups after 12 weeks exercise, on GH, drop set group showed significantly higher secretion amount than ascending set group, and on IGF-1 and testosterone, drop set group than ascending set group and descending set group. Cortisol did not show any significant difference among the groups after exercise. Consequently, it is considered that GH, testosterone and IGF-1, which are known as representative hormones that can promote muscle expression and generation, can change by difference of training method among resistance exercise sets, and among these, drop set method is the training method which is relatively more effective in the secretion of growth hormone than ascending set and descending set.

경륜 선수의 경기력과 연습과 시합상황의 스포츠수행전략과의 관계

정용민(Chung Yong-Min) 한국체육과학회 2010 한국체육과학회지 Vol.19 No.2

The purpose of this study was to find the relationship between athletes' performance and performance strategy of cycle racer in oder to provide the base for players management, promotion of performance and technique level. The Test Of Performance Strategy2 (TOPS2) was administered to 381 professional cycle racer. To analyze the collected data SPSS/PC+16 was used, and statistical techniques employed in this study were One-way ANOVA and paired t-test As a result, some significant implication about the relationship among the TOPS2 variables were showed. First, in practice strategy, the superior ability players' self-talk, automaticity, goal setting, and imagery were higher than the lower ability players' and showed significant difference. Second, in competition strategy, the superior ability players' self-talk, emotional control, automaticity, goal setting, imagery, and activation were higher than the lower ability players', but distractibility was lower and showed significant difference. Third, the significant difference of imagery of the best level racer between practice and competition was showed , and competition score was higher. The significant difference of automaticity, imagery, relaxation of the middle and low level racer between practice and competition was showed and competition score was higher.

테니스 양손 백핸드 드라이브 스트로크 시 방향성에 따른 라켓헤드 속도와 각도의 비교분석

정용민(Chung, Yong-Min),강영택(Kang, Young-Taek),서국은(Seo, Kook-Eun) 한국체육과학회 2015 한국체육과학회지 Vol.24 No.5

The purpose of this study was to analyze the velocity and angle of racket head by difference course during a two-hand backhand driver stroke to enhance performance and skill. The subjects were six female university players. The mean difference between the kinematic variables were analysis such as the velocity of racket head, x, y, z components velocity of racket head and angle of racket face, incidence and horizontal. Two-handed backhand drive stroke was analyzed through a three-dimensional motion analysis. The test data was analyzed by a paired t-test, and the alpha level of α=.05 was set for all tests of significance. The findings of the study were as follows; First, there was no difference in the velocity of racket head to all event by different course during swing. Second, there was difference in the E2 x component, E2, E3 and E4 y components but the rest was no difference between the course during swing. Third, there was difference in the horizontal angle of racket head to all event by different course during swing but the angle of face and incidence was no difference between the course during swing.

신체가치, 객체화된 신체의식, 외모지향성이 운동 의사결정균형에 미치는 영향

정용민(Chung, Yong-Min) 한국체육과학회 2012 한국체육과학회지 Vol.21 No.4

The purpose of this study was to examine the influence of body-related value, objectified body consciousness and appearance orientation on decisional balance of exercise. 1,199 students of middle school, high school and university students for male and female were involved in this study. The following result came out through the Covariance structure analysis of casual relationship between body-related value, objectified body consciousness, appearance orientation and decisional balance of exercise. First, body-related. value significantly positive influenced on decisional balance of exercise. Second, objectified body consciousness influenced significantly negative on decisional balance of exercise. Third, body-related value influenced significantly positive on appearance orientation. Fourth, objectified body consciousness influenced significantly positive on appearance orientation. Finally, appearance orientation influenced significantly positive on decisional balance of exercise.

Uneven Rocky Surface 이동 시 압력분포를 적용한 운동역학적 활용

정용민 ( Yong Min Chung ) 한국운동역학회 2009 한국운동역학회지 Vol.19 No.2

대학생의 지각된 신체상 불일치에 따른 신체불만족과 사회적 체형불안

정용민(Chung, Yong-Min),정상훈(Jeong, Sang-Hoon) 한국체육과학회 2011 한국체육과학회지 Vol.20 No.5

The purpose of this study was to empirically investigate the differences between body dissatisfaction and social physique anxiety according to the perceived body image discrepancies among male and female from college. To achieve this purpose of study, 558 valid samples were used for analysis. The results are as follows. First, a comparison of perceived body image discrepancy in female had shown to be higher than male. Second, in the body dissatisfaction according to the sex and discrepancy between current perceived and ideal body image, females were found to be significantly higher than males and the obesity than thin or standard weight showed the higher body dissatisfaction in discrepancy between current perceived and ideal body image. Third, in the difference of social physique anxiety according to the sex and discrepancy between current perceived and ideal body image, females were found to be significantly higher than males. The orders from standard, thin, and obesity had higher social physique anxiety in perceived discrepancy.