Abstract
The purpose of this study was to investigate the relationship between food and nutrient intakes and obesity in adolescents. The subjects were 1,003 students (512 boys and 491 girls) in 7 to 9 grade of middle schools in Seoul, Korea and the mean age was 13.5±0.6 years. General characteristics were collected by a questionnaire, dietary intakes were obtained from 3 or 6-day food records, and height and weight were measured. The students were classified into three groups using the obesity index ([weight/standard weight for height]×100): underweight (n=265, obesity index<90%), normal (n=478, 90%<=obesity index<110%), overweight and obesity (n=260, obesity index=>110%). Overweight group has a lower dietary variety score (p<0.01) and dietary diversity score (p<0.001) compared to the underweight and normal group. The mean nutrient densities of carbohydrate (p<0.01), potassium (p<0.05), sodium (p<0.01), carotene (p<0.01) and vitamin E (p<0.05) were significantly increased according to obesity index. These results imply that we need to focus on reducing carbohydrate density and increasing variety of food in diet for overweight adolescents. (This work was supported by the Brain Korea 21 Project in 2007.)
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