Desenvolvimento e validação de equações antropométricas específicas para a determinação da densidade corporal de mulheres militares do Exército Brasileiro

Abstract

The purpose of this study was to develop and validate specific anthropometric equations to determine the body density of Brazilian Army military women. All anthropometric variables were collected from females 18-45 years old, living in Rio de Janeiro. One hundred military women were distributed into two groups: the regression group (n = 80), used for the development of the equations proposed in this study, and the validation group (n = 20), used for the validation of the developed equations. Ten skinfolds, ten perimeters, three diameters, body mass (BM), height and density (D) by means of hydrostatic weighing were measured. For the purpose of developing the equations, stepwise regression was performed; for validation, Pearson linear correlation coefficient (p < 0.05), constant error (CE), technical error (TE) and standard error of the estimate (SEE) were calculated. The subjects showed the following characteristics: regression group (n = 80), aged 30.54 ± 6.53 years, height 165.05 ± 5.95 cm, body mass 58.71 ± 6.68 kg and body density 1.045620 ± 0.00876 g/ml; validation group (n = 20), aged 31.08 ± 6.84 years, height 164.21 ± 5.49 cm, body mass 58.88 ± 7.88 kg and body density 1.043877 ± 0.01117 g/ml. After the regression analysis and the subsequent choice criteria, 10 equations showing an R between 0.681 and 0.822, as well as a SEE between 0.00516 and 0.00652 g/ml were developed. These equations were validated (1,2) by means of variables such as skinfolds, perimeters and diameters to estimate D of Brazilian Army military women aged 18-45 years.

Composição corporal e somatótipo de mulheres com sobrepeso e obesas pré e pós-treinamento em circuito ou caminhada

“…Resisted exercises stimulate the muscular improvement (11) , confounding the reduction of the body fat in the body mass appraisal. The general anthropometric formulas to calculate the body composition are more comprising, and those for specific populations are more accurate (12) . However, Pollock et al (1,13) have developed equations for both genders with age adjustments, and it is used in big populations with a quite high accuracy index.…”

Atletas De Pentatlo Militar Feminino Com Melhor Composição Corporal Apresentam Melhor Desempenho Na Modalidade

“…Para conversão da densidade corporal (DC) em percentual de gordura (%G), foi utilizada a equação de Siri 23 : %G = [(4,95/DC)-4,50] *100. Para estimar a densidade corporal, variável importante para o cálculo do percentual de gordura, foi utilizada uma fórmula desenvolvida para mulheres militares, segundo equação de Salem et al 24 : DC = 1,022 - 2 + 0,008641*(DBI), onde: BIC= dobra do bíceps, TRI=dobra do tríceps, TORAX= perímetro do tórax, CINT= perímetro da cintura, ANTE= perímetro do antebraço, DBI= diâmetro biestiloidal.…”

Desempenho de diferentes equações antropométricas na predição de gordura corporal excessiva em crianças e adolescentes

“…Por isso, tais autores recomendam cautela na interpretação dos resultados individuais. Além desses, outros dois estudos recentes chegaram a conclusão semelhante 32,33 , comparando equações preditivas de composição corporal, baseadas em medidas antropométricas, na população adulta brasileira.…”