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Prediction of fat-free mass by bioimpedance analysis in migrant Asian Indian men and women: a cross validation study.
Int J Obes (Lond). 2006 Jul; 30(7):1125-31.IJ

Abstract

BACKGROUND

Bioimpedance analysis (BIA) is a fast and convenient field technique for estimation of total body fat-free mass (FFM). However, bioimpedance-based prediction equations have been developed in predominantly white populations and little information is available on their usefulness in Asian Indian populations.

OBJECTIVE

To develop a prediction equation for FFM based on BIA measurements applicable to a migrant population of Asian Indians and to investigate the predictive accuracy of published BIA-based equations in this ethnic group.

DESIGN

FFM was measured by dual-energy X-ray absorptiometry in 211 healthy adults (110 men, 101 women; age ranges 19-74 year) of Asian Indian ethnicity and used as the reference measure to develop prediction equations based on single-frequency BIA measurements of resistance and reactance. A cross-validation technique was applied. Predictive accuracy of published BIA-based equations was assessed in this sample.

RESULTS

Sex-specific equations developed in the entire group included height2/resistance and body weight as predictors (R2=0.84 and 0.70 and standard errors of estimate of 2.8 and 2.0 kg for males and females, respectively; CV: 6%). Of published equations examined, one predicted FFM satisfactorily in men with nonsignificant bias and may be applicable to Asian Indian populations. None of the published equations tested performed satisfactorily in women.

CONCLUSIONS

Bioimpedance-based equations for predicting FFM developed specifically in Asian Indians are recommended for field studies designed to measure body composition of this ethnic group.

Authors+Show Affiliations

Division of Sport and Recreation, Faculty of Health and Environmental Sciences, Auckland University of Technology, Auckland, New Zealand. elaine.rush@aut.ac.nzNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't
Validation Study

Language

eng

PubMed ID

16432545

Citation

Rush, E C., et al. "Prediction of Fat-free Mass By Bioimpedance Analysis in Migrant Asian Indian Men and Women: a Cross Validation Study." International Journal of Obesity (2005), vol. 30, no. 7, 2006, pp. 1125-31.
Rush EC, Chandu V, Plank LD. Prediction of fat-free mass by bioimpedance analysis in migrant Asian Indian men and women: a cross validation study. Int J Obes (Lond). 2006;30(7):1125-31.
Rush, E. C., Chandu, V., & Plank, L. D. (2006). Prediction of fat-free mass by bioimpedance analysis in migrant Asian Indian men and women: a cross validation study. International Journal of Obesity (2005), 30(7), 1125-31.
Rush EC, Chandu V, Plank LD. Prediction of Fat-free Mass By Bioimpedance Analysis in Migrant Asian Indian Men and Women: a Cross Validation Study. Int J Obes (Lond). 2006;30(7):1125-31. PubMed PMID: 16432545.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Prediction of fat-free mass by bioimpedance analysis in migrant Asian Indian men and women: a cross validation study. AU - Rush,E C, AU - Chandu,V, AU - Plank,L D, Y1 - 2006/01/24/ PY - 2006/1/25/pubmed PY - 2007/3/1/medline PY - 2006/1/25/entrez SP - 1125 EP - 31 JF - International journal of obesity (2005) JO - Int J Obes (Lond) VL - 30 IS - 7 N2 - BACKGROUND: Bioimpedance analysis (BIA) is a fast and convenient field technique for estimation of total body fat-free mass (FFM). However, bioimpedance-based prediction equations have been developed in predominantly white populations and little information is available on their usefulness in Asian Indian populations. OBJECTIVE: To develop a prediction equation for FFM based on BIA measurements applicable to a migrant population of Asian Indians and to investigate the predictive accuracy of published BIA-based equations in this ethnic group. DESIGN: FFM was measured by dual-energy X-ray absorptiometry in 211 healthy adults (110 men, 101 women; age ranges 19-74 year) of Asian Indian ethnicity and used as the reference measure to develop prediction equations based on single-frequency BIA measurements of resistance and reactance. A cross-validation technique was applied. Predictive accuracy of published BIA-based equations was assessed in this sample. RESULTS: Sex-specific equations developed in the entire group included height2/resistance and body weight as predictors (R2=0.84 and 0.70 and standard errors of estimate of 2.8 and 2.0 kg for males and females, respectively; CV: 6%). Of published equations examined, one predicted FFM satisfactorily in men with nonsignificant bias and may be applicable to Asian Indian populations. None of the published equations tested performed satisfactorily in women. CONCLUSIONS: Bioimpedance-based equations for predicting FFM developed specifically in Asian Indians are recommended for field studies designed to measure body composition of this ethnic group. SN - 0307-0565 UR - https://www.unboundmedicine.com/medline/citation/16432545/Prediction_of_fat_free_mass_by_bioimpedance_analysis_in_migrant_Asian_Indian_men_and_women:_a_cross_validation_study_ L2 - https://doi.org/10.1038/sj.ijo.0803230 DB - PRIME DP - Unbound Medicine ER -