Anthropometric markers for cardiovascular disease risk factors among overweight adolescents
2001
Oliveira, C.L. de | Veiga, G.V. de | Sichieri, R.
This study investigated the relationship between Body Mass Index (BMI), percentage of body fat, distribution of body fat and cardiovascular disease risk factors in overweight adolescents. Eighty adolescents, aged between 12 and 18 years, 56 girls and 24 boys, attending a primary health care center between August 1997 and March 1998, with BMI equal to or above the 85th percentile of age-sex Brazilian population distribution. Body fat measurement was carried out through electric bioimpedance, using a body fat analyzer, model Tanita TBF 305. Correlation between BMI and body fat percentage with lipid profile was about the same for both sexes, whereas the correlation between systolic and diastolic blood pressure and fat percentage (r = 0.43, p = 0.009) was higher than with BMI (r = 0.28, p = 0.03 and r = 0.37, p = 0.005, respectively), for girls. Among boys, HDL cholesterol showed a strong and significant negative association with waist circumference (r = -0.50, p = 0.01) and with waist-to-hip ratio (r = -0.46, p = 0.02). In both sexes, triglycerides were not associated with BMI and percentage of body fat. Among girls HDL cholesterol (r = -0.39, p = 0.0002), triglycerides (r = 0.43, p = 0.0009) and total cholesterol/HDL cholesterol ratio (r = 0.44, p = 0.0006) correlated more strongly with waist-to-hip ratio than waist circumference. Waist circumference was more strongly correlated with BMI (r = 0.92, p = 0.0001 for boys and r = 0.89, p = 0.001 for girls) than waist-to-hip ratio (r = 0.46, p = 0.02 for boys and r = 0.51, p = 0.003 for girls). With further adjustment for sex, pubertal status, and BMI, waist-to-hip ratio was a better predictor of HDL cholesterol than waist circumference.
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