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    ABSTRACT: The bioelectrical impedance analysis (BIA) tetra polar body is taken as whole equipment with better accuracy in the assessment of body composition, but its high cost restricts their use. Yet, the trustworthiness, reliability, and efficiency of these devices are still controversial. This study aimed at comparing different BIA devices for the assessment of body fat percentage (%TBF) of college students. The study included 60 subjects (33 men and 27 women), ages between 18 and 38 years old (23.2±4.7 years). Weight, height, and body mass index (BMI=kg/m²) were assessed. The %TBF was determined by Biodynamics™ (BIO) full-body tetrapolar bioimpedance device, OMRON™ HBF 306 bl (OMR) upperbody bioimpedance device and TANITA™ FS088R (TAN) lower-body bioimpedance device. It was used for statistical analysis the Kruskal-Wallis test to check the variance, analysis of agreement by intraclass correlation and the Bland-Altman. There was no difference between the %TBF values provided by BIO, OMR and TAN devices for men (16.4%, 14.5% and 17.3%; p=0.09) and women (25.7%, 23.5 and 25%; p=0.36). Furthermore, there was a significant correlation between TAN x BIO (0.76; p<0.0001), OMR x BIO (0.73; p <0.001) devices among men, and TAN x BIO (0.76; p<0.0001) and OMR x BIO (0.71; p<0.0001) devices among women. Close to zero average differences were observed in the Bland-Altman plot. There were no significant differences between BIA devices used to determine the %TBF of these individuals. OMRON™ and TANITA™ devices are suitable for use in daily practice.
    Revista Brasileira de Ciência e Movimento. 12/2011; 19(2):5-12.
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    ABSTRACT: The purpose of this study was to analyze the efficiency of different anthropometric equations that identify excess body fat in children and adolescents. Methods The sample consisted of 1498 subjects (678 males and 820 females), aged 7 to 17 years (13.7 SD=2.0), from Presidente Prudente (SP). Body weight and height were measured to calculate body mass index. Waist circumference and triceps, abdominal, and thigh skinfold thicknesses were also measured. The percentage of body fat was estimated by four anthropometric equations: Slaughter et al., Slaughter II et al., Dezenberg et al., and Deurenberg et al.. The Receiver Operating Characteristic Curve was used to indicate the efficiency of these equations. Results High sensitivity values (82.4% to 100,0%) and high and low specificity scores (20.9% to 94.9%) were observed in males. In females, the sensitivity values ranged from moderate to high (72.2% to 99.4%) and the specificity scores were high (21.6% to 98.2%). Conclusion The Deurenberg et al., 1991 equation was the most accurate for identifying presence or absence of obesity in this sample.
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    ABSTRACT: The aim of this study was to evaluate nutritional and anthropometric profiles of young swimmers belonging to semiprofessional teams. Thirty-six caucasian adolescent swimmers (22 boys and 14 girls) participated voluntarily in the study. Anthropometric data, dietary intake, and blood parameters were determined. Female swimmers had greater values of triceps, suprailiac, and abdominal skinfolds. Endomorphic somatotype was twofold greater in girls compared with in boys. Energy intake and protein intake per kilogram of body weight were significantly greater in boys compared to in girls. On the other hand, girls had significantly greater polyunsaturated fatty acid intake compared that of boys. Energy intake of boys and girls was below their requirements. In contrast, protein intake doubled the requirements of the study population. Furthermore, inadequate intake of carotenes, vitamin A, vitamin E, vitamin D, and folic acid was found in both boys and girls; girls also had inadequate intake of iron and calcium. Plasma levels of iron, vitamins C and E, and carotenes were similar in male and females swimmers, and they were within the normal range. In conclusion, young swimmers participating in the present study had differences between sexes in somatotypes. Adolescent swimmers had low average total energy intakes, excessive protein intake, and lower intake of several micronutrients in both sexes.
    The Journal of Strength and Conditioning Research 04/2011; 25(4):1126-33. · 1.80 Impact Factor

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