여자 초등학생의 신체부위별 체지방 분포도에 따른 신체구성 및 체력에 관한 연구

윤형기(Yoon Hyung-Gi) 한국체육과학회 1999 한국체육과학회지 Vol.8 No.2

생활체육 참여노인의 건강증진행위, 건강상태, 여가만족 및 삶의 질의 관계

윤형기(Yoon Hyung-Gi),김대훈(Kim Dae-Hoon) 한국체육과학회 2011 한국체육과학회지 Vol.20 No.4

To look into the matter closely, the work established the target as the senior citizens who over 60 years old in Seoul city, May, 2010. Using convenience sampling, the target is extracted from the leisure programs (Badminton, physical exercises, gate ball, mountain climbing, ping-pong, jogging, dance, aerobics and dance sports) of the public community center. The total amount, 240 people, is composed 60 people each from 4 districts (Gangdong, Gangseo, Gangbuk, Gangnam). Using SPSS 12.0 program after excepting untruthful people surveyed and some missed documents, total documents from 214 people are enforced using the way of factor analysis and multiple regression analysis. It may be summarized as follows. First, health promotion behavior of the people is a positive factor which effects on their health status, satisfaction of leisure and quality of life. Second, health status of the people is a positive factor which effects on the quality of life. Third, their satisfaction of leisure is effect on the economic quality of life.

Tanner Whitehouse2 방법에 의한 남자 중학생의 골격성숙도와 성인신장 추정에 관한 연구

윤형기 ( Hyung Gi Yoon ) 숭실대학교 국민생활체육연구소 2001 생활체육연구소논문집 Vol.1 No.-

본 연구는 우리나라 남자중학생들의 골격성숙도를 TW2방법을 이용하여 골격성숙도에 따른 생물학적 연령과 성인시 신장을 비교 검토하는데 있으며 연구대상은 서울시에 소재한 K중학교 1학년부터 3학년까지 총 394명을 집단무선표집법에 의하여 선정하였고 골격성숙4도를 측정하여 생물학적 연령을 체격요인 등과 비교하고 이를 토대로 성인시 키를 추정한 결과 연령별 골연령 결과는 12세에 13.26세, 13세에 14.43세, 14세에 16.21세, 15세에 17.17세로 물리학적 연령보다 생물학적 연령이 높음을 알 수 있었고 골격성숙도와 체격요인간의 상관관계를 보면 골격성숙접수와 키의 상관계수는 0.72, 몸무게는 0.64, 체지방율은 0.24로 매우 유의한(P<.001) 정상관을 나타냈으며, 골격성숙도별 체격을 비교한 결과는 미숙군, 보통군, 조숙군의 세 그룹간에는 키, 몸무게에서 매우 유의하게(P<.001) 차이가 있는 것으로 나타났으며 성인시 키의 추정치는 12세가 175.24cm, 13세가 174.78cm, 14세의 성인시 키는 174.05cm, 15세의 성인시 키는 174.39cm로 추정되었다. The aims of this study were to analyze the present state of skeletal maturation and to predict adult height in middle school girls. The sample of the study consisted of a total of 394 middle school gills aged 12-15 years. Body mass was measured with a beam balance accurate to 0.1kg, and stature was taken with a Martin`s anthropometer. Radiographs of the left hand and wrist were taken with an 31 portable(70kVp; 20mA) X-ray unit assembled in a portable apparatus designed and constructed according to the recommendations of Greulich and Pyle(1959). Skeletal age was determined by RUS scores(radius, ulna, and short bones) with TW2 method(Tanner et al., 1983). All skeletal maturity assessments of the samples were made by author. The reliability of the ratings by the study assessor was tested using a random sample of radiographs from 30 Boys aged 12-15 years. The absolute mean difference between first and second assessment was 0.17 years for the RUS(SD=0.27) system and 0,20 years for carpal(SD=0.26) system. Therefore, intra-observer reliability for skeletal age assessments were comparable with results of previous studies(Beunen et al. 1990; Song et al., 1998). Adult height were predicted by means of the Tanner-Whitehouse`s age and sex related regression equations involving three variables of height, chronological age, bone age. All analyses were carried out by the SAS computer programs(SAS Institute, 1988). Skeletal maturity state was estimated by the calculation of 3, 10, 25, 50, 75, 90, and 97 percentiles. Comparisons between levels of maturity were applied by means of analysis of variance(ANOVA) and Duncan`s a posteriori tests. The results showed that in the boys, RUS scores increase nearly linearly between 12 and 15 years of age boys. RUS scores in boys varied from 463.98 for 12 years to 881.03 for 15 years. Percentiles based on the RUS scores were largely distributed between 25th and 50th. Bone ages were 13.46 for 12 years, 14.43 for 13 years, 16.21 for 14 years, 17.17 for 15 years. Adult heights were predicted 175.24cm for 12 years, 174.78cm for 13 years, 174.05cm for 14 years, 174.39cm for 15 year.

수상레저스포츠 참가 대학생의 라이프스타일이 자아존중감 및 건강증진행위에 미치는 영향

윤형기(Yoon Hyung-Gi),노재헌(Roh Jae-Hun),주성택(Ju Soung-Teg) 한국체육과학회 2011 한국체육과학회지 Vol.20 No.2

The principal purpose of this study is to analyze closely the causal relationship among lifestyle, self-seteem and health promotion behaveiors of the universities participating in sports for all of the workers. For this purpose the research was administered to using materials of the 313 universities participating in water leisure sports of Seoul and kyunggi-do. Data were collected through samples by means of purposive sampling method. The principal purpose of this study is to analyze closely the causal relationship among lifestyle, self-esteem, and health promotion behaviors of the Universities participating in water leisure sports. The questionnaire for data collection of this study was based on those used in previous studies among lifestyle, self-esteem and health promotion behaviros scales, and used them after examing the verification of validity and reliability through pilot test. The methods of Statistics used to analyze the collected datas were corelation and multiple regression analysis. The following is conlusions brought through these analyzing methods and process in this study. Hopothesis Ⅰ was selected to optimal casual relationship. Hopothesis Ⅱ was selected to optimal casual relationship. Hopothesis Ⅲ was selected to optimal casual relationship.

중학생의 골격성숙도별 신체구성에 관한 연구

윤형기(Hyung Gi Yoon) 한국사회체육학회 2002 한국사회체육학회지 Vol.17 No.-

This study investigated body composition of classified by skeletal maturation of 394 male middle school students attending the middle school in Seoul. The result of the study were as follows; 1. In factor of percent fat appeared 14 years group average the highest in four groups. 2. In factor of Skeletal maturation score(RUS) appeared 463.9 for 12 years, 561.1 for 13 years, 760.8 for 14 years and 881.1 for 15 years. 3. In factor of Fat free mass, BNH and Total body water appeared Advanced group average higher than Normals, Retard groups in 13 and 14 years.

유산소성 운동 강도의 차이가 산화적-질소적 스트레스 및 뇌신경세포 생성인자에 미치는 영향

윤형기(Yoon, Hyung-Gi),노희태(Roh, Hee-Tae) 한국체육과학회 2015 한국체육과학회지 Vol.24 No.2

The purpose of the current research is to investigate the effects of different aerobic exercise intensities on neurotrophic factor induced by oxidative-nitrosative stress. The subjects of the current research were 15 healthy male. The subjects were asked to perform treadmill running in three different conditions: 1) low-intensity exercise(LIE, 50%VO₂max), 2) moderate-intensity exercise(MIE, 65%VO₂max), and 3) high-intensity exercise(HIE, 85%VO₂max). Blood sampling were taken at rest, at immediately after-exercise, and at 60minute after-exercise for examining the levels of oxidative-nitrosative stress markers[malonaldehyde(MDA), nitrite, superoxide dismutase(SOD)] and neurotrophic factor[glial cell line-derived neurotrophic factor(GDNF), insulin like growth factor-1 (IGF-1)]. The result of current research shows that the levels of MDA, nitrite, SOD, GDNF and IGF-1 were significantly increased after acute aerobic exercise(p〈.05). and the levels of MDA, nitrite, SOD appeared to be significantly higher in HIE compared to LIE and/or MIE(p〈.05). These results suggest that acute aerobic exercise can induce increase responses of oxidative-nitrosative stress and neurotrophic factor. It is suggested, however, that high intensity exercise could increase the oxidative-nitrosative stress.

당구활동 참여노인의 신체, 사회성 능력이 여가만족 및 삶의 질에 미치는 영향

윤형기(Yoon, Hyung-Gi),김대훈(Kim, Dae-Hoon) 한국체육과학회 2011 한국체육과학회지 Vol.20 No.5

This study was has set the target as elders who are over 60 years old living in Seoul area as of May, 2010 in order to clarify the effect of physical and social abilities of elders participating in billiard activity on leisure satisfaction and quality of life while the sample has been extracted using Systematic Stratified Cluster Random Sampling for sampling the subjects of investigation. For the extraction process of the sample, a total of 240 people dividing into four areas of Gangdong, Gangseo, Gangbuk and Gangnam based on Seoul area. Among the total of 240 sampled questionnaires, the factor analysis and multiple regression analysis were performed using SPSS 12.0 on the data of 210 people excluding insincere responses and partially omitted data to derive the following conclusions. First, as a result of analyzing the effect of physical ability on emotional/social and physical/environmental leisure satisfaction or the quality of life, the positive effect was shown in them including emotional/social and physical/environmental leisure satisfaction or the quality of life. Second, as a result of analyzing the effect of social ability on emotional/social and physical/environmental leisure satisfaction or the quality of life, the positive effect was shown in them including emotional/social and physical/environmental leisure satisfaction or the quality of life. Third, as a result of analyzing the effect of leisure satisfaction on the quality of life, the positive effect was shown in the quality of life.

탈진 운동이 혈중 항산화효소와 과산화지질에 미치는 영향

윤형기(Yoon Hyung-Gi) 한국체육과학회 2000 한국체육과학회지 Vol.9 No.2

The purpose of this study was to evaluate the effects of exercises on activation of antioxidant enzymes and concentration of glutathione and malondialdehyde by exercise types and gender. For this purpose, ordinary students and soccer players of both gender were picked up to be tested to a treadmill running with a fixed load amounting to 80% of VO2max until their entire physical exhaustion. Subjects' blood was tested before, immediately after, 5 and 10 minutes after the exercise to be examined. It was found out that the before and immediately after the exercise, the ordinary male student group showed the highest concentration significantly, while the female soccer player group indicated the lowest level. On the other hand, the level of ordinary female group's glutathione concentration was significantly recovery 5 and 10 minutes after the exercise. Also, it was found out that the ordinary male student group showed higher level of malondialdehyde concentration significant than male and female soccer palyer groups. However, immediately and recovery 10 minutes after the excercise, the ordinary male group showed a significantly higher level of malondialdehyde concentration than the other three groups. In conclusion, this study shows that regular training associated with significantly changed concentration of glutathione and malondialdehyde. These findings support the view that free radical-induced damage in muscle could be one of the factors involved in muscle fatigue. If so, the increased endurance in trained male should reflect lengthening of the time required for the increased oxidative processes to sufficiently impair cell function so as to make further exercise impossible. Future studies amy consider age, muscle fiber type, physical fitness lever and training intensity.

초등학생의 신체유형, 골격성숙도 및 체력의 인과관계 검증

윤형기(Yoon Hyung-Gi) 한국체육과학회 2002 한국체육과학회지 Vol.11 No.1

This study investigated Skeletal maturation, physical fitness of classified by somatotype of 258 male elementary school students attending the elemetary school in Seoul. The result of the study were as follows; 1. In factor of TW20-2score, Carpals score, bone age appeared Endomorphy average the highest in three groups in Somatotype. 2. In factor of grip strength apeared Ectomorphy average the highest in three groups in Skeletal maturation. 3. The correlation coefficient between grip strength and TW20-2score, Carpals score, RUS score, bone age were revealed as the highest correlation in Mesomorphy.

남자 초등학생의 신체유형별 신체구성 및 체력에 관한 연구

윤형기(Hyung-Gi Yoon) 한국체육과학회 1999 한국체육과학회지 Vol.8 No.1