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    Validation of bioelectrical impedance analysis for total body water assessment against the deuterium dilution technique in Asian children

    Access Status
    Open access via publisher
    Authors
    Liu, A.
    Byrne, N.
    Ma, G.
    Nasreddine, L.
    Trinidad, T.
    Kijboonchoo, K.
    Ismail, M.
    Kagawa, Masaharu
    Poh, B.
    Hills, A.
    Date
    2011
    Type
    Journal Article
    
    Metadata
    Show full item record
    Citation
    Liu, A. and Byrne, N. and Ma, G. and Nasreddine, L. and Trinidad, T. and Kijboonchoo, K. and Ismail, M. et al. 2011. Validation of bioelectrical impedance analysis for total body water assessment against the deuterium dilution technique in Asian children. European Journal of Clinical Nutrition. 65 (12): pp. 1321-1327.
    Source Title
    European Journal of Clinical Nutrition
    DOI
    10.1038/ejcn.2011.122
    ISSN
    0954-3007
    School
    School of Public Health
    URI
    http://hdl.handle.net/20.500.11937/55955
    Collection
    • Curtin Research Publications
    Abstract

    Background/Objectives: To develop and cross-validate bioelectrical impedance analysis (BIA) prediction equations of total body water (TBW) and fat-free mass (FFM) for Asian pre-pubertal children from China, Lebanon, Malaysia, Philippines and Thailand. Subjects/Methods: Height, weight, age, gender, resistance and reactance measured by BIA were collected from 948 Asian children (492 boys and 456 girls) aged 8-10 years from the five countries. The deuterium dilution technique was used as the criterion method for the estimation of TBW and FFM. The BIA equations were developed using stepwise multiple regression analysis and cross-validated using the Bland-Altman approach. Results: The BIA prediction equation for the estimation of TBW was as follows: TBW=0.231 × height 2/resistance+ 0.066 × height+0.188 × weight+0.128 × age+0.500 × sex-0.316 × Thais-4.574 (R 2 =88.0%, root mean square error (RMSE)=1.3 kg), and for the estimation of FFM was as follows: FFM=0.299 × height 2 / resistance+0.086 × height+0.245 × weight+0.260 × age+0.901 × sex-0.415 × ethnicity (Thai ethnicity = 1, others = 0)-6.952 (R 2 88.3%, RMSE=1.7 kg). No significant difference between measured and predicted values for the whole cross-validation sample was found. However, the prediction equation for estimation of TBW/FFM tended to overestimate TBW/FFM at lower levels whereas underestimate at higher levels of TBW/FFM. Accuracy of the general equation for TBW and FFM was also valid at each body mass index category.Conclusions:Ethnicity influences the relationship between BIA and body composition in Asian pre-pubertal children. The newly developed BIA prediction equations are valid for use in Asian pre-pubertal children. © 2011 Macmillan Publishers Limited All rights reserved.

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