VALIDATION OF EQUATIONS OF SKINFOLD THICKNESS FOR FAT MASS ESTIMATION IN HIV/AIDS SUBJECTS: A COMPARISON OF DUAL ENERGY X-RAY ABSORPTIOMETRY AND COMPUTED TOMOGRAPHY OF ABDOMEN
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https://doi.org/10.12820/rbafs.v.13n2p75-83Palabras clave:
Body composition, HIV/AIDS, skinfold thickness, dual energy X-ray absorptiometry, computed tomography of abdomen.Resumen
The objective of the present study was to develope and to validate equations based on skinfold thickness for the estimation of percent body fat (%BF) in HIV/AIDS subjects using dual energy X-ray absorptiometry (DEXA) and computed tomography of abdomen (CTA) as the gold standards. The sample included 15 adult Brazilian HIV/AIDS subjects (10 men and 5 women). Mean age was 36.9 years (SD 8.2) and mean %BF by DEXA was 18.2 (SD 9.5). The estimation of %BF was done using linear regression models, and the independent variables were the sum of one to seven skinfold thickness. The skinfold thickness was compared with DEXA and CTA. The Durnin & Womersley equation was also tested. The best equation for males was [%BF = 3.385 + 0.279 * (axillary + subscapular); r2=0.83] and for females was [%BF = -24.323 + 0.736 * (suprailiac + abdominal + medial calf); r2=0.81]. The total error of the estimate of %BF in HIV/AIDS was <3.5%, the means were not different between males and females from the values measured by DEXA, and the estimated values were highly correlated with DEXAand CTA. The 95% limits of agreement between HIVE and DEXA by the Bland-Altman method were good. The Durnin &Womersley equation was also tested, and the values showed signifi cant differences in the means (males) and the total error was >3.5% for males and females in the comparison with DEXA. The HIV/AIDS equation complied with all the validation criteria. We recommended this equation to be tested in larger samples for estimating %BF among HIV/AIDS subjects.Descargas
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2012-09-11
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Florindo AA, Latorre M do RD de O, Borelli A, Rocha M de S, Segurado AAC. VALIDATION OF EQUATIONS OF SKINFOLD THICKNESS FOR FAT MASS ESTIMATION IN HIV/AIDS SUBJECTS: A COMPARISON OF DUAL ENERGY X-RAY ABSORPTIOMETRY AND COMPUTED TOMOGRAPHY OF ABDOMEN. Rev. Bras. Ativ. Fís. Saúde [Internet]. 11 de septiembre de 2012 [citado 3 de julio de 2024];13(2):75-83. Disponible en: https://rbafs.org.br/RBAFS/article/view/786
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Derechos de autor 2012 Alex Antonio Florindo, Maria do Rosario Dias de Oliveira Latorre, Aurélio Borelli, Manoel de Souza Rocha, Aluisio Augusto Cotrim Segurado
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