시간대별 운동프로그램이 비만 초등학생의 대사성질환 위험요인과 BDNF 관련인자에 미치는 영향

Abstract

The purpose of the current study was to investigate the effects of morning and afternoon exercise program on the body composition, physical fitness, metabolic disease risk factors and BDNF related factors in obese elementary children. Twenty-one obese elementary children were divided into morning exercise (n=7), afternoon exercise (n=7) and control (n=7) groups. The morning and afternoon exercise program was carried out under the condition of RPE 11-15 for 60 minutes, 5 days a week for 12 weeks. Body composition(body weight, body mass index, precent body fat, body fat mass, skeletal muscle mass, waist circumference, hip circumference, waist-hip ratio), physical fitness(Left grip strength, Right grip strength, back strength, sit-up, sit and reach, progressive aerobic cardiovascular endurance run), Metabolic disease risk factors(systolic blood pressure, diastolic blood pressure, fasting glucose, total cholesterol, high density lipoprotein cholesterol, low density lipoprotein cholesterol, triglyceride) and BDNF related factors(growth hormone, insulin-like growth factor-1, brain derived neurotrophic factor) of all subjects were measured at before and after the program participation. All data were expressed as mean and standard deviation and also one-way ANOVA and paired t-test was performed to test the significant levels of differences within and between groups by using SPSS program. Significance was set at the α=.05. Body weight, diastolic blood pressure and triglyceride was significantly decreased within morning exercise group. Systolic blood pressure and fasting glucose was significantly decreased within afternoon exercise group. Body mass index, precent body fat and waist circumference was significantly decreased within morning exercise and afternoon exercise groups, and morning exercise group was shown that there were significant differences of waist circumference and diastolic blood pressure, compared with control group. Insulin-like growth factor-1 and brain derived neurotrophic factor was significantly increased within morning exercise group. Sit and reach was significantly increased within afternoon exercise group. Back strength, sit-up, progressive aerobic cardiovascular endurance run and high density lipoprotein cholesterol was significantly increased within morning exercise and afternoon exercise groups, and morning exercise group was shown that there were significant differences of insulin-like growth factor-1 and brain derived neurotrophic factor, compared with control group. Our findings concluded the severity of obese elementary children. There were significant improvements in body weight, body mass index, percent body fat, waist circumference, back strength, sit-up, progressive aerobic cardiovascular endurance run, diastolic blood pressure, high density lipoprotein cholesterol, triglyceride, insulin-like growth factor-1 and brain derived neurotrophic factor in obese elementary children after morning exercise program participation. Therefore, it is recommended for elementary children to participate in regular morning exercise to improve the body composition, physical fitness and metabolic disease risk factors as well as to increased BDNF related factors.