유산소 운동과 Glycemic Index가 젊은여성의 건강체력, 대사적 지수 및 골밀도에 미치는 영향

Abstract

The purpose of this study was to investigate the effects of aerobic exercise and supplementation of different glycemic index values of carbohydrate on the body composition including fat mass(FM), percent fat(%fat), body mass index(BMI), and waist-hip-ratio (WHR), health-related physical fitness including back strength, sit-up, trunk flexion, and Harvard step test, and metabolic indices including leptin, blood glucose, and insulin and bone mineral density in young female adults. 22 young female adults were participated in this study and classified as a two groups by High glycemic index group(HGI, n=12), and low glycemic index group(LGI, n=10). They performed aerobic walking programs on treadmill for 8 weeks. Health-related physical fitness was determined by measuring back strength, sit-up, trunk flexion and Harvard step test, and body composition was measured by Bioelectric Impedance Analysis(BIA). Blood leptin, blood glucose, blood insulin were measured before and 8 weeks of the program treatment. There was a significant difference on bone mineral density but there were no significant differences on body composition, health-related physical fitness, and metabolic indices between two groups. Blood leptin was significantly associated with flexibility(r=-0.37), FM(r=0.56), % fat(r=0.44), LBM(r=0.41), WHR(r=0.38), BMI(r=0.39),blood glucose(r=0.35), and insulin(r=0.30). In conclusion, aerobic exercise program and supplementation of different GI carbohydrate for 8 weeks affect on bone mineral density but don't affect on health-related physical fitness, metabolic indices in young females. Leptin significantly associated with flexibility, fat mass, percent fat, LBM, WHR, BMI, blood glucose, and insulin in young females.