Development of a single-frequency bioimpedance prediction equation for fat-free mass in an adult Indigenous Australian population

Hughes, J. T., Maple-Brown, L. J., Piers, L. S., Meerkin, J., O'Dea, K. and Ward, L. C. (2014) Development of a single-frequency bioimpedance prediction equation for fat-free mass in an adult Indigenous Australian population. European Journal of Clinical Nutrition, 69 1: 28-33. doi:10.1038/ejcn.2014.54

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Author Hughes, J. T.
Maple-Brown, L. J.
Piers, L. S.
Meerkin, J.
O'Dea, K.
Ward, L. C.
Title Development of a single-frequency bioimpedance prediction equation for fat-free mass in an adult Indigenous Australian population
Journal name European Journal of Clinical Nutrition   Check publisher's open access policy
ISSN 0954-3007
1476-5640
Publication date 2014-04-23
Year available 2015
Sub-type Article (original research)
DOI 10.1038/ejcn.2014.54
Open Access Status Not yet assessed
Volume 69
Issue 1
Start page 28
End page 33
Total pages 6
Place of publication London, United Kingdom
Publisher Nature Publishing Group
Language eng
Abstract BACKGROUND/OBJECTIVES: To describe the development of a single-frequency bioimpedance prediction equation for fat-free mass (FFM) suitable for adult Aboriginal and Torres Strait Islander peoples with and without diabetes or indicators of chronic kidney disease (CKD).
Formatted abstract
Background/Objectives: To describe the development of a single-frequency bioimpedance prediction equation for fat-free mass (FFM) suitable for adult Aboriginal and Torres Strait Islander peoples with and without diabetes or indicators of chronic kidney disease (CKD).

Subjects/Methods: FFM was measured by whole-body dual-energy X-ray absorptiometry in 147 adult Indigenous Australians. Height, weight, body circumference and resistance were also measured. Adults with and without diabetes and indicators of CKD were examined. A random split sample with internal cross-validation approach was used to predict and subsequently validate FFM using resistance, height, weight, age and gender against measured FFM.

Results: Among 147 adults with a median body mass index of 31 kg/m2, the final model of FFM was FFM (kg)=0.432 (height, cm2/resistance, ohm)−0.086 (age, years)+0.269 (weight, kg)−6.422 (if female)+16.429. Adjusted R2 was 0.94 and the root mean square error was 3.33 kg. The concordance was high (rc=0.97) between measured and predicted FFM across a wide range of FFM (31–85 kg).

Conclusions: In the context of the high burden of diabetes and CKD among adult Indigenous Australians, this new equation for FFM was both accurate and precise and based on easily acquired variables (height, weight, age, gender and resistance) among a heterogeneous adult cohort.
Keyword Nutrition & Dietetics
Nutrition & Dietetics
Q-Index Code C1
Q-Index Status Confirmed Code
Grant ID 545202
490348
Institutional Status UQ
Additional Notes Advance online publication 23 April 2014

Document type: Journal Article
Sub-type: Article (original research)
Collections: Official 2015 Collection
School of Chemistry and Molecular Biosciences
 
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Created: Tue, 06 May 2014, 01:38:17 EST by Mrs Louise Nimwegen on behalf of School of Chemistry & Molecular Biosciences