Prediction of fat-free body mass from bioelectrical impedance and anthropometry among 3-year-old children using DXA

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Katrine Tschentscher Ejlerskov, Signe Marie Jensen, Line B Christensen, Christian Ritz, Kim F. Michaelsen, Christian Mølgaard

For 3-year-old children suitable methods to estimate body composition are sparse. We aimed to develop predictive equations for estimating fat-free mass (FFM) from bioelectrical impedance (BIA) and anthropometry using dual-energy X-ray absorptiometry (DXA) as reference method using data from 99 healthy 3-year-old Danish children. Predictive equations were derived from two multiple linear regression models, a comprehensive model (height(2)/resistance (RI), six anthropometric measurements) and a simple model (RI, height, weight). Their uncertainty was quantified by means of 10-fold cross-validation approach. Prediction error of FFM was 3.0% for both equations (root mean square error: 360 and 356 g, respectively). The derived equations produced BIA-based prediction of FFM and FM near DXA scan results. We suggest that the predictive equations can be applied in similar population samples aged 2-4 years. The derived equations may prove useful for studies linking body composition to early risk factors and early onset of obesity.
OriginalsprogEngelsk
Artikelnummer3889
TidsskriftScientific Reports
Vol/bind4
Antal sider6
ISSN2045-2322
DOI
StatusUdgivet - 2014

Bibliografisk note

CURIS 2014 NEXS 075

ID: 102785308