Predictive validity of the body adiposity index in overweight and obese adults using dual-energy X-ray absorptiometry

Robinson Ramírez-Vélez, Jorge Enrique Correa-Bautista, Katherine González-Ruíz, Andrés Vivas, Antonio García-Hermoso, Hector Reynaldo Triana-Reina

Resultado de la investigación: Contribución a RevistaArtículo

10 Citas (Scopus)

Resumen

The body adiposity index (BAI) is a recent anthropometric measure proven to be valid in predicting body fat percentage (BF%) in some populations. However, the results have been inconsistent across populations. This study was designed to verify the validity of BAI in predicting BF% in a sample of overweight/obese adults, using dual-energy X-ray absorptiometry (DEXA) as the reference method. A cross-sectional study was conducted in 48 participants (54% women, mean age 41.0 ± 7.3 years old). DEXA was used as the "gold standard" to determine BF%. Pearson’s correlation coefficient was used to evaluate the association between BAI and BF%, as assessed by DEXA. A paired sample t-test was used to test differences in mean BF% obtained with BAI and DEXA methods. To evaluate the concordance between BF% as measured by DEXA and as estimated by BAI, we used Lin’s concordance correlation coefficient and Bland-Altman agreement analysis. The correlation between BF% obtained by DEXA and that estimated by BAI was r = 0.844, p < 0.001. Paired t-test showed a significant mean difference in BF% between methods (BAI = 33.3 ± 6.2 vs. DEXA 39.0 ± 6.1; p < 0.001). The bias of the BAI was -6.0 ± 3.0 BF% (95% CI = -12.0 to 1.0), indicating that the BAI method significantly underestimated the BF% compared to the reference method. Lin’s concordance correlation coefficient was considered stronger (rc = 0.923, 95% CI = 0.862 to 0.957). In obese adults, BAI presented low agreement with BF% measured by DEXA; therefore, BAI is not recommended for BF% prediction in this overweight/obese sample studied.

Idioma originalEnglish (US)
Número de artículo737
PublicaciónNutrients
Volumen8
N.º12
DOI
EstadoPublished - dic 1 2016

Huella dactilar

dual-energy X-ray absorptiometry
Photon Absorptiometry
Adiposity
adiposity
body fat
Adipose Tissue
methodology
cross-sectional studies
sampling
gold
Population
Cross-Sectional Studies

All Science Journal Classification (ASJC) codes

  • Food Science

Citar esto

Ramírez-Vélez, R., Correa-Bautista, J. E., González-Ruíz, K., Vivas, A., García-Hermoso, A., & Triana-Reina, H. R. (2016). Predictive validity of the body adiposity index in overweight and obese adults using dual-energy X-ray absorptiometry. Nutrients, 8(12), [737]. https://doi.org/10.3390/nu8120737
Ramírez-Vélez, Robinson ; Correa-Bautista, Jorge Enrique ; González-Ruíz, Katherine ; Vivas, Andrés ; García-Hermoso, Antonio ; Triana-Reina, Hector Reynaldo. / Predictive validity of the body adiposity index in overweight and obese adults using dual-energy X-ray absorptiometry. En: Nutrients. 2016 ; Vol. 8, N.º 12.
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abstract = "The body adiposity index (BAI) is a recent anthropometric measure proven to be valid in predicting body fat percentage (BF{\%}) in some populations. However, the results have been inconsistent across populations. This study was designed to verify the validity of BAI in predicting BF{\%} in a sample of overweight/obese adults, using dual-energy X-ray absorptiometry (DEXA) as the reference method. A cross-sectional study was conducted in 48 participants (54{\%} women, mean age 41.0 ± 7.3 years old). DEXA was used as the {"}gold standard{"} to determine BF{\%}. Pearson’s correlation coefficient was used to evaluate the association between BAI and BF{\%}, as assessed by DEXA. A paired sample t-test was used to test differences in mean BF{\%} obtained with BAI and DEXA methods. To evaluate the concordance between BF{\%} as measured by DEXA and as estimated by BAI, we used Lin’s concordance correlation coefficient and Bland-Altman agreement analysis. The correlation between BF{\%} obtained by DEXA and that estimated by BAI was r = 0.844, p < 0.001. Paired t-test showed a significant mean difference in BF{\%} between methods (BAI = 33.3 ± 6.2 vs. DEXA 39.0 ± 6.1; p < 0.001). The bias of the BAI was -6.0 ± 3.0 BF{\%} (95{\%} CI = -12.0 to 1.0), indicating that the BAI method significantly underestimated the BF{\%} compared to the reference method. Lin’s concordance correlation coefficient was considered stronger (rc = 0.923, 95{\%} CI = 0.862 to 0.957). In obese adults, BAI presented low agreement with BF{\%} measured by DEXA; therefore, BAI is not recommended for BF{\%} prediction in this overweight/obese sample studied.",
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Ramírez-Vélez, R, Correa-Bautista, JE, González-Ruíz, K, Vivas, A, García-Hermoso, A & Triana-Reina, HR 2016, 'Predictive validity of the body adiposity index in overweight and obese adults using dual-energy X-ray absorptiometry', Nutrients, vol. 8, n.º 12, 737. https://doi.org/10.3390/nu8120737

Predictive validity of the body adiposity index in overweight and obese adults using dual-energy X-ray absorptiometry. / Ramírez-Vélez, Robinson; Correa-Bautista, Jorge Enrique; González-Ruíz, Katherine; Vivas, Andrés; García-Hermoso, Antonio; Triana-Reina, Hector Reynaldo.

En: Nutrients, Vol. 8, N.º 12, 737, 01.12.2016.

Resultado de la investigación: Contribución a RevistaArtículo

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Ramírez-Vélez R, Correa-Bautista JE, González-Ruíz K, Vivas A, García-Hermoso A, Triana-Reina HR. Predictive validity of the body adiposity index in overweight and obese adults using dual-energy X-ray absorptiometry. Nutrients. 2016 dic 1;8(12). 737. https://doi.org/10.3390/nu8120737