Dual energy X-ray absorptiometry (DXA) reliability and intraobserver reproducibility for segmental body composition measuring

Abstract Background: the measurement precision of body composition can interfere on the diagnosis and prescription of diseases' treatment. Furthermore, with regard to dual energy X-rays absorptiometry (DXA), there may be important differences between the measures of regions of interest (ROI) automatically performed by DXA or manually by an evaluator, which can cause measurement error and influence the evaluation or diagnosis. Aim: thus, this study aimed to evaluate the measurement reliability of body composition by DXA and intraobserver reproducibility for the ROI measurement. Methods: a total of 15 young adults were subjected to two full-body scans by DXA, under the same conditions. The first scan of all volunteers was chosen and the extent of the ROI was performed, in two stages, separated by a period of 2 weeks, by a single trained evaluator. The coefficient of variation (CV) and intraclass correlation coefficient (ICC) were calculated with a significance level of p < 0.05. Results: high-precision measurements of DXA for whole body mass (ICC = 0.999; CV = 2.3%), fat mass (ICC = 0.998; CV = 1.6%), lean mass (ICC = 0.995; CV = 0.3%) and bone mineral content (ICC = 0.996; CV < 0.1%) were obtained. Further, it was observed high intraobserver reproducibility for ROI measurement, with ICC values ranging between 0.952 and 0.999. Conclusion: body composition measurement by DXA presents high reproducibility for whole body mass, fat mass, lean mass and bone mineral content and also high intraobserver reproducibility for the ROI measurement.

Saved in:
Bibliographic Details
Main Authors: Costa-Moreira,Osvaldo, Patrocínio-de-Oliveira,Cláudia-Eliza, de-Paz,José-Antonio
Format: Digital revista
Language:English
Published: Grupo Arán 2018
Online Access:http://scielo.isciii.es/scielo.php?script=sci_arttext&pid=S0212-16112018000200340
Tags: Add Tag
No Tags, Be the first to tag this record!
id oai:scielo:S0212-16112018000200340
record_format ojs
spelling oai:scielo:S0212-161120180002003402021-04-21Dual energy X-ray absorptiometry (DXA) reliability and intraobserver reproducibility for segmental body composition measuringCosta-Moreira,OsvaldoPatrocínio-de-Oliveira,Cláudia-Elizade-Paz,José-Antonio Densitometry Reliability of results Reproducibility of results Body composition Bone mineral density Abstract Background: the measurement precision of body composition can interfere on the diagnosis and prescription of diseases' treatment. Furthermore, with regard to dual energy X-rays absorptiometry (DXA), there may be important differences between the measures of regions of interest (ROI) automatically performed by DXA or manually by an evaluator, which can cause measurement error and influence the evaluation or diagnosis. Aim: thus, this study aimed to evaluate the measurement reliability of body composition by DXA and intraobserver reproducibility for the ROI measurement. Methods: a total of 15 young adults were subjected to two full-body scans by DXA, under the same conditions. The first scan of all volunteers was chosen and the extent of the ROI was performed, in two stages, separated by a period of 2 weeks, by a single trained evaluator. The coefficient of variation (CV) and intraclass correlation coefficient (ICC) were calculated with a significance level of p < 0.05. Results: high-precision measurements of DXA for whole body mass (ICC = 0.999; CV = 2.3%), fat mass (ICC = 0.998; CV = 1.6%), lean mass (ICC = 0.995; CV = 0.3%) and bone mineral content (ICC = 0.996; CV < 0.1%) were obtained. Further, it was observed high intraobserver reproducibility for ROI measurement, with ICC values ranging between 0.952 and 0.999. Conclusion: body composition measurement by DXA presents high reproducibility for whole body mass, fat mass, lean mass and bone mineral content and also high intraobserver reproducibility for the ROI measurement.Grupo AránNutrición Hospitalaria v.35 n.2 20182018-04-01journal articletext/htmlhttp://scielo.isciii.es/scielo.php?script=sci_arttext&pid=S0212-16112018000200340en
institution SCIELO
collection OJS
country España
countrycode ES
component Revista
access En linea
databasecode rev-scielo-es
tag revista
region Europa del Sur
libraryname SciELO
language English
format Digital
author Costa-Moreira,Osvaldo
Patrocínio-de-Oliveira,Cláudia-Eliza
de-Paz,José-Antonio
spellingShingle Costa-Moreira,Osvaldo
Patrocínio-de-Oliveira,Cláudia-Eliza
de-Paz,José-Antonio
Dual energy X-ray absorptiometry (DXA) reliability and intraobserver reproducibility for segmental body composition measuring
author_facet Costa-Moreira,Osvaldo
Patrocínio-de-Oliveira,Cláudia-Eliza
de-Paz,José-Antonio
author_sort Costa-Moreira,Osvaldo
title Dual energy X-ray absorptiometry (DXA) reliability and intraobserver reproducibility for segmental body composition measuring
title_short Dual energy X-ray absorptiometry (DXA) reliability and intraobserver reproducibility for segmental body composition measuring
title_full Dual energy X-ray absorptiometry (DXA) reliability and intraobserver reproducibility for segmental body composition measuring
title_fullStr Dual energy X-ray absorptiometry (DXA) reliability and intraobserver reproducibility for segmental body composition measuring
title_full_unstemmed Dual energy X-ray absorptiometry (DXA) reliability and intraobserver reproducibility for segmental body composition measuring
title_sort dual energy x-ray absorptiometry (dxa) reliability and intraobserver reproducibility for segmental body composition measuring
description Abstract Background: the measurement precision of body composition can interfere on the diagnosis and prescription of diseases' treatment. Furthermore, with regard to dual energy X-rays absorptiometry (DXA), there may be important differences between the measures of regions of interest (ROI) automatically performed by DXA or manually by an evaluator, which can cause measurement error and influence the evaluation or diagnosis. Aim: thus, this study aimed to evaluate the measurement reliability of body composition by DXA and intraobserver reproducibility for the ROI measurement. Methods: a total of 15 young adults were subjected to two full-body scans by DXA, under the same conditions. The first scan of all volunteers was chosen and the extent of the ROI was performed, in two stages, separated by a period of 2 weeks, by a single trained evaluator. The coefficient of variation (CV) and intraclass correlation coefficient (ICC) were calculated with a significance level of p < 0.05. Results: high-precision measurements of DXA for whole body mass (ICC = 0.999; CV = 2.3%), fat mass (ICC = 0.998; CV = 1.6%), lean mass (ICC = 0.995; CV = 0.3%) and bone mineral content (ICC = 0.996; CV < 0.1%) were obtained. Further, it was observed high intraobserver reproducibility for ROI measurement, with ICC values ranging between 0.952 and 0.999. Conclusion: body composition measurement by DXA presents high reproducibility for whole body mass, fat mass, lean mass and bone mineral content and also high intraobserver reproducibility for the ROI measurement.
publisher Grupo Arán
publishDate 2018
url http://scielo.isciii.es/scielo.php?script=sci_arttext&pid=S0212-16112018000200340
work_keys_str_mv AT costamoreiraosvaldo dualenergyxrayabsorptiometrydxareliabilityandintraobserverreproducibilityforsegmentalbodycompositionmeasuring
AT patrociniodeoliveiraclaudiaeliza dualenergyxrayabsorptiometrydxareliabilityandintraobserverreproducibilityforsegmentalbodycompositionmeasuring
AT depazjoseantonio dualenergyxrayabsorptiometrydxareliabilityandintraobserverreproducibilityforsegmentalbodycompositionmeasuring
_version_ 1755936984013996032