BACKGROUND: Visceral adipose tissue is associated with increased risk for cardiovascular disease risk factors and morbidity from cardiovascular diseases. Waist measurement and waist-to-height ratio (WHtR) have been used as proxy measures of visceral adipose tissue, mainly in adults. OBJECTIVE: To validate body mass index (BMI), waist circumference and WHtR as predictors for the presence of cardiovascular disease risk factors in children of Greek-Cypriot origin. SUBJECTS AND METHODS: A total of 1037 boys and 950 girls with mean age 11.4 AE 0.4 y were evaluated. Dependent variables for the study were total cholesterol (TC), triglycerides (TG), high-density lipoprotein cholestrol (HDL-C), lowdensity lipoprotein cholesterol (LDL-C), and systolic (SBP) and diastolic (DBP) blood pressure. RESULTS: When children were divided into two groups according to the 75th percentile for BMI, waist circumference and WHtR, all dependent variables had higher mean values in the highest percentile groups in WHtR groups and almost all variables in BMI and waist circumference groups. Adjusted odds ratios for predicting pathological values of cardiovascular disease risk factors were slightly higher for the highest WHtR group for predicting lipid and lipoprotein pathological values and for the highest BMI groups in predicting high blood pressure measurement. Using stepwise multiple regression analysis to explain the variance of the dependent variables, waist circumference was the most signi®cant predictor for all variables both for boys and girls, whereas BMI had the lowest predictive value for the detection of cardiovascular disease risk factors. CONCLUSION: Waist circumference and WHtR are better predictors of cardiovascular disease risk factors in children than BMI. Further studies are necessary to determine the cutoff points for these indices for an accurate prediction of risk factors.
Objective: To estimate the prevalence of undernutrition and obesity in preschool children in Cyprus and identify possible associations. Design: Cross-sectional study. Setting: Private and public nursery schools. Subjects: A representative sample (n ¼ 1412) stratified by age, gender, district and area of residence. Interventions: Weight (kg) and height (cm) were obtained and BMI (kg/m 2 ) was calculated. Z scores for weight-for-age, height-for-age, and weight-for-height were calculated using the cutoffs from the CDC/WHO 1978 reference. Sociodemographic associations with nutritional status were examined in a logistic regression analysis. Results: The prevalence of undernutrition (WHO definition, Z-scores oÀ2) was low. Specifically the prevalence of underweight was 2.3%, wasting 2.8%, and stunting 1.1%. Undernutrition was associated with a low birth weight (LBW); odds ratio (OR) for underweight 4.1 (95% CI: 1.4, 12.2), P ¼ 0.012, stunting 5.2 (95% CI: 1.1, 23.3), P ¼ 0.033, and wasting 4.2 (95% CI: 1.3, 14.3), P ¼ 0.021.The prevalence of obesity (IOTF definition) was higher than undernutrition, and increased with age: 1.3% in 2 y olds to 10.4% in 6 y olds. Overweight and obesity prevalence were higher in rural (16.1%) than urban children (12.8%; P ¼ 0.046). Obesity in preschool children was associated with paternal obesity, OR 3.24 (95% CI: 1.59, 6.61), P ¼ 0.001, and maternal obesity 3.91 (95% CI: 1.78, 8.59), P ¼ 0.001. A birth weight (BW)Z4000 g was associated with obesity compared to a BW between 2501 and 3000 g, OR 7.63 (95% CI: 1.91, 30.52), P ¼ 0.004. Conclusions: The prevalence of undernutrition among preschool children in Cyprus was low but obesity prevalence was higher. Parental obesity and high BW were significantly associated with obesity while LBW was associated with undernutrition in preschool children.
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