• 대한영양사협회학술지
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• 제23권1호
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• pp.78-93
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• 2017

The purposes of this study were to assess energy expenditure of eight walking activities in normal weight and overweight or obese high school students and to evaluate the accuracy of two accelerometers worn on the ankle and waist. Thirty-five (male 17, female 18) healthy high school students participated in this study. They were classified into normal weight (n=21) and overweight or obese (n=14) groups. The subjects completed five treadmill walking activities (TW2.4, TW3.2, TW4.0, TW4.8, TW5.6), followed by three self-selected hallway walking activities (walk as if walking and talking with a friend: HWL, walk as if hurrying across the street at a cross-walk: HWB, walk as fast as you can but do not run: HWF). Energy expenditure and metabolic equivalents (METs) were measured using a portable indirect calorimeter, and predicted energy expenditures and METs were derived from two accelerometers placed on the ankle and waist. Measured energy expenditures per body weight (kg) of eight walking activities were significantly higher in the normal weight group than in the obese group and significantly higher in female than male. The ankle accelerometer overestimated energy expenditures and METs (bias 49.4~105.5%), whereas the waist accelerometer underestimated energy expenditures and METs (bias -30.3~-85.8). Except for HWF (fast) activity, METs of seven activities were moderate intensity based on Compendium METs intensity categories. HWF (fast) activity was vigorous intensity. METs from the ankle accelerometer were vigorous intensity except TW2.4 activity (moderate intensity). METs from the waist accelerometer were low intensity (TW2.4, TW3.2, TW4.0, TW4.8, HWL) and moderate intensity (TW5.6, HWB, HWF). Physical activity guidelines were developed based on measured physical activity level of high school students. Further studies should investigate the effects of body composition in larger subjects.

• 한국지역사회생활과학회지
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• 제20권1호
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• pp.81-89
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• 2009

The purpose of this study was to analyze the patterns and interrelationships for meeting recommendations of physical activity, sedentary behavior, and dietary behavior in elementary school students. A cross-sectional design was used to assess 259 students ages 11 to 13 years. Physical activity (moderate to vigorous physical activity $\geqq$60min/day), sedentary behavior (viewing time for TV, computer, DVD, video, etc<3hr/day), and dietary behavior (servings of fruits and vegetables$\geqq$5times/day) were categorized into two levels: meeting recommendations or not meeting recommendations. Parents' health behaviors and home environmental variables were assessed with self-reported measures. Chi-squared tests and independent t-tests were conducted to compare anthropometric variables and the prevalence of students not meeting the recommendation for the three health behaviors. Comparison between males and females and logistic linear regression were used to determine the interrelationships of three health behaviors. 25.9% of students did not meet the physical activity recommendations. 15.4% did not meet sedentary behavior recommendations, and 41.7% did not meet dietary recommendation. Only 39.8% of students met all three recommendations, but 19.0% did not meet over two recommendations. Patterns that simultaneously did not meet two recommendations were: sedentary and dietary behavior in males (8.1%), and physical activity and dietary behavior in females (10.4%). Students who did not meet dietary recommendations were at greater risk of not meeting physical activity (OR 2.76; 95% CI 1.15 to 6.64), and sedentary behavior (OR 3.07; 95% CI 1.15 to 8.16) compared with students who did meet dietary recommendations. The findings of this study support not an independent behavior approach but a multiple behavior approach taking into account gender and interrelationships among the three behaviors.

• Asian Pacific Journal of Cancer Prevention
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• 제14권1호
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• pp.481-487
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• 2013

Following breast cancer diagnosis, women often attempt to modify their lifestyles to improve their health and prevent recurrence. These behavioral changes typically involve diet and physical activity modification. The aim of this study was to determine association between healthy eating habits and physical activity with quality of life among Iranian breast cancer survivors. A total of 100 Iranian women, aged between 32 to 61 years were recruited to participate in this cross-sectional study. Eating practices were evaluated by a validated questionnaire modified from the Women's Healthy Eating and Living (WHEL) study. Physical activity was assessed using the International Physical Activity Questionnaire (IPAQ). A standardized questionnaire by the European Organization of Research and Treatment of Cancer Quality of Life and its breast cancer module (EORTC QLQ-C30/+BR-23) were applied to determine quality of life. Approximately 29% of the cancer survivors were categorized as having healthy eating practices, 34% had moderate eating practices and 37% had poor eating practices based on nutrition guidelines. The study found positive changes in the decreased intake of fast foods (90%), red meat (70%) and increased intake of fruits (85%) and vegetables (78%). Generally, breast cancer survivors with healthy eating practices had better global quality of life, social, emotional, cognitive and role functions. Results showed that only 12 women (12%) met the criteria for regular vigorous exercise, 22% had regular moderate-intensity exercise while the majority (65%) had low-intensity physical activity. Breast cancer survivors with higher level of physical activity had better emotional and cognitive functions. Healthy eating practices and physical activity can improve quality of life of cancer survivors. Health care professionals should promote good dietary habits and physical activity to improve survivor's health and quality of life.

• Journal of Preventive Medicine and Public Health
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• 제31권4호
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• pp.604-615
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• 1998

Although previous studies revealed the association of physical activity with mortality rate, it is unclear whether there is a linear trend between physical activity and mortality rate. In this study, the association of physical activity with the risk of all-cause mortality was analysed using Cox's proportional hazard model for a cohort of 14,204 healthy Korean men aged 40-59 years followed up for 4 years(Jan. 1993-Dec. 1996). Physical activity and other life style were surveyed by a postal questionnaire in December 1992. Total of 14,204 subjects were grouped into quartiles by physical activity. Using death certificate data, 123 deaths were identified. The second most active quartile had a lowest mortality .ate with relative risk of 0.44(95% C.I. : 0.23-0.84) compared with most sedentary quartile, showing a J-shape pattern of physical activity-mortality curve. By examining the difference in proportion of cause of the death between most active quartile and the other quartiles, there was no significant difference of proportional mortality from cardiovascular deaths, cerebrovascular deaths or deaths from trauma. The covariates were stratified into two group between which the trend of RR was compared to test the effect modification. There was no remarkable effect modification by alcohol intake, smoking, body mass index, calorie consumption, percent fat consumption. In conclusion, moderate activity was found to have more protective effect on all-cause mortality than vigorous activity and that the J-shape pattern of physical activity-mortality curve was not due to the difference of mortality pattern or effect modification by alcohol intake, smoking, body mass index, calorie consumption and percent fat consumption.

• 한국치위생학회지
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• 제16권3호
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• pp.417-426
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• 2016

Objectives: The objective of the study was to investigate the related factors of preventive behavior experience toward dental caries and periodontal disease in Korean adolescents. Methods: The study subjects were 72,060 adolescents in 800 schools who completed 2014 Korean Youth Risk Behavior Web-based survey. Dependent variables included general characteristics of the subjects, oral health behavior, and oral disease experience. The experience rate of sealant and scaling showed the prevention behavior of dental caries and periodontal disease. Data were analyzed by IBM SPSS statistics 20.0. Results: The experience rate of sealant accounted for 26.9%. The experience of sealant was related with gender, school, maternal education level, economic status, vigorous physical activity, smoking, usual stress, fruit consumption, milk consumption, soda consumption, snack consumption, tooth brushing, oral health education experience, periodontal bleeding and pain, mucosal disorders, and bad breath. The experience rate of scaling was 22.6%. The experience of scaling was related with gender, school, city division, learning achievement, maternal education level, economic status, residential type, vigorous physical activity, usual stress, fruit consumption, milk consumption, tooth brushing, oral health education experience, periodontal bleeding and pain, mucosal disorders, and bad breath. Conclusions: To expand preventive oral health behavior in the adolescents, it is necessary to support the systematic policy making and monetary establishment in the future.

• 한국콘텐츠학회논문지
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• 제17권7호
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• pp.622-633
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• 2017

본 연구는 청소년의 흡연 정도에 따른 금연시도 영향요인을 비교하기 위해 시행되었다. 본 연구는 질병관리본부가 실시한 2016년 제12차 청소년 건강행태 온라인조사의 원시자료를 이용한 2차 분석 연구로 SPSS 21.0으로 복합표본 분석하였으며, 본 연구의 대상자는 청소년 흡연자 4,012명으로 하루 10개비 미만의 일반흡연 청소년은 3,171명(78.4%), 하루 10개비 이상의 중증흡연 청소년은 841명(21.6%)로 나타났다. 연구결과, 금연시도 비율은 일반흡연 청소년은 71.6%, 중증흡연 청소년은 64.8%로 일반흡연 청소년에서 더 높았다. 일반흡연 청소년의 금연시도 영향요인은 격렬한 신체활동, 우울 경험, 흡연 시작시기, 친구흡연, 금연교육 경험, 금연홍보 경험으로 나타났으며, 중증흡연 청소년의 금연시도 영향요인은 격렬한 신체활동, 친구흡연, 금연교육 경험, 금연홍보 경험으로 나타났다. 본 연구 결과를 토대로, 청소년 흡연자의 금연시도 성공을 위해 효과적인 밀착형 금연프로그램 개발을 위한 기초자료로 활용함을 기대한다.

• 한국융합학회논문지
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• 제9권3호
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• pp.101-109
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• 2018

본 연구의 목적은 남 녀 청소년의 건강행태와 천식 진단과의 관련성을 파악하기 위함으로 질병관리본부가 2016년에 실시한 제12차 청소년 건강행태 온라인조사의 원시자료를 사용하여 SPSS 21.0으로 복합표본 분석하였다. 본 연구의 대상자는 총 65,528명으로 남자 청소년의 천식 진단율은 10.3%, 여자 청소년의 천식 진단율은 7.8%이다. 연구결과, 남자 청소년에서는 천식진단과 관련성이 있는 건강행태 변수는 음주 경험(OR=1.087), 간접흡연 노출(OR=1.087), 격렬한 신체활동 비실천(OR=1.084), 비만(OR=1.291), 충분하지 않은 수면시간(OR=1.113)과 스트레스(OR=1.257)로 나타났다. 여자 청소년에서 천식과 관련성이 있는 건강행태 변수는 흡연 경험(OR=1.242), 간접흡연 노출(OR=1.111), 격렬한 신체활동 실천(OR=0.899), 비만(OR=1.178), 스트레스(OR=1.251)였다. 본 연구의 결과는 성별에 따른 천식청소년의 특성화된 건강증진 역량강화 프로그램 개발을 위한 기초자료로 활용할 것이다.

• 한국콘텐츠학회논문지
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• 제18권10호
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• pp.584-595
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• 2018

본 연구의 목적은 초등학생의 체육수업 기본심리욕구 충족정도가 학교행복감과 신체적 라이프스타일에 미치는 영향을 살펴보는 것이다. 이를 위해 I 도시, 5개 초등학교 300명의 초등학생에게 설문지가 배부되었다. 불성실하게 응답한 설문지 22부를 제외한 총 278부의 설문지가 자료분석에 사용되었다. 자료분석을 위해 기술분석, 탐색적 요인분석, 상관관계분석, 다중회귀분석이 사용되었다. 상관관계분석 결과, 체육수업 기본심리욕구의 유능감과 관계성은 중 고강도 신체활동 및 학교행복감의 모든 하위변인들과 정적인 상관관계를 나타냈다. 다중회귀분석결과, 기본심리욕구의 유능감은 자기존중감과 교사관계 학교행복감에 정적인 영향을 미쳤으며, 중 고강도 신체활동에 정적인 영향을 미쳤다. 기본심리욕구의 관계성은 학교행복감의 모든 하위요인에 정적인 영향을 미쳤다. 본 연구의 결과에 따르면, 체육수업 기본심리욕구의 충족은 학교행복감의 중요한 요소이며, 신체적으로 적극적인 학생으로 이끄는 중요한 심리기전으로 밝혀졌다. 본 연구를 통해 초등학교 체육수업의 가치가 더욱 부각되기를 바란다.

• 지역사회간호학회지
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• 제19권4호
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• pp.587-599
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• 2008

Purpose: The purpose of this study is to compare the differences between obese and non-obese students in sedentary leisure-time activities. Methods: The survey was performed with 725 students from 3 different middle schools in Kyeonggi-do. In order to measure the degree of obesity. used are BMI and "2007 Korea Children and Adolescents' Average Scale". With regard to the leisure activities. YRBS and "youth Behavior Risk Factor Surveillance" were referred. Results: The rate of boys' overweight was 18.0% and that of girls was 11.8%. Students watching TV 3hours+/day were 16.6% for boys and 30.6% for girls during weekday. Respective values for weekend were 56.8% and 71.4%. Students using computer 3hours+/day were both 14.5% for boys and girls during weekday. and 53.7% for boys and 36.7% for girls during weekend. 14.9% of boys and 21.2% of girls didn't participate in vigorous physical activities and 5.9% for boys and 11.2% for girls didn't participate in moderate physical activities. The differences between obese and non-obese students in sedentary activities were not significant. However. the difference in leisure-time activity was significant. Conclusion: The programs for prevention and management of adolescents' obesity have to be focused on reducing their sedentary activities and improving physical activities.

• 한국전문물리치료학회지
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• 제5권1호
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• pp.63-78
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• 1998

The decrease of muscle power and muscle size between twenties and seventies was about 30% and 40% respectively. The loss of muscle mass by aging resulted in the decrease of muscle power. The loss of muscle mass was due to the decrease of number of Type I fiber and Type II fiber and size of each muscle fiber. The aging skeletal muscle didn't show the loss of glycolysis capacity but showed 20% decrease of the oxidative enzymes and muscle vascularization. The vigorous endurance exercise training with graded intensity played a role in the vascular proliferation, increase of activity of oxidative enzymes and improvement of $VO_2$ max. The graded resistance exercise also played a role in the muscle hypertrophy and increase of muscle power, if it performed with adequate intensity and period. The exercise adaptation of aging skeletal muscle prevented it from sarcopenia, provided the activity of daily living with great effect and provided the aging related disease, that is Type II diabetes mellitus, arteriosclerosis, hypertension, osteoporosis and obesity, with great effect.