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Predictive validity of body fat percentage by bioimpedance compared with deuterium oxide dilution in Costa Rican schoolchildren

Artículo científico
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Date
2017-06-19
Author
Zamora Alfaro, José Antonio
Laclé Murray, Adriana
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Abstract
OBJECTIVE: The purpose of this study was to verify the validity of body fat percentage (BF%) by bioelectrical impedance analysis (BIA) in a sample of Costa Rican schoolchildren. METHODS: The sample consisted of 52 male (mean age 8.1 ± 0.9 years) and 49 female (mean age 7.5 ± 1.0 years) schoolchildren. Deuterium oxide dilution was the reference method used as the “gold standard” to determine the fat mass (FM) expressed as BF%. Linear regression analyses and paired sample t‐tests were used to test the association and mean differences between BIA and deuterium oxide dilution BF%. Concordance between BIA and deuterium oxide dilution BF% was determined by Lin's concordance correlation coefficient. Measurement of agreement between the two methods was analyzed using the Bland‐Altman procedure. RESULTS: Significant associations between BIA and deuterium oxide dilution BF% were found in males (R = 0.97, R2 = 0.95, P < .0001) and in females (R = 0.98, R2 = .96, P < .0001). The measurements of BF% (mean ± SD) were not significantly different between males (BIA 31.1 ± 7.6% vs. deuterium oxide dilution 31.0 ± 7.4%) and females (BIA 25.9 ± 7.9% vs. deuterium oxide dilution 26.3 ± 7.8%) by t‐test. Lin's concordance correlation coefficient identified an almost perfect strength of agreement between males and females. Bland‐Altman plots showed that the Bodystat measured similar BF% compared to the deuterium oxide dilution in both males and females. CONCLUSIONS: BIA Bodystat presented high agreement with BF% measured by deuterium oxide dilution; therefore BIA Bodystat is recommended for estimating BF% in Costa Rican schoolchildren.
URI
http://hdl.handle.net/10669/74947
External link to the item
doi.org/10.1002/ajhb.23028
https://onlinelibrary.wiley.com/doi/10.1002/ajhb.23028
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  • Repositorios universitarios

  • Repositorio del SIBDI-UCR
  • Biblioteca Digital del CIICLA
  • Repositorio Documental Rafael Obregón Loría (CIHAC)
  • Biblioteca Digital Carlos Melendez (CIHAC)
  • Repositorio de Fotografías
  • Colección de videos de UPA-VAS
  • Sitios recomendados

  • Buscador regional de LA Referencia
  • Buscador del Open ROAR
  • Scientific Electronic Library Online (SciELO)
  • Directory of Open Access Journals (DOAJ)
  • Redalyc
  • Redes sociales

  • facebook.com/repositoriokerwa
  • @Ciencia_UCR
  • Sobre Kérwá
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  • Cómo depositar
  • Políticas
Contact Us | Send Feedback
Repositorio Institucional de la Universidad de Costa Rica. Algunos derechos reservados. Este repositorio funciona con DSpace.
Universidad de Costa Rica