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Med Sci Sports Exerc. 2001 Apr;33(4):665-70.

Dual x-ray absorptiometry, bioelectrical impedance, and near infrared interactance in obese women.

Author information

1
Department of Internal Medicine and Nutrition, University Paris VI, 75181, Paris Cedex 04, France.

Abstract

PURPOSE:

Whether the evaluation of body composition in obese people using low-cost, simple bedside, two-compartment techniques reflects the data obtained by indirect methods such as dual x-ray absorptiometry (DEXA) remains controversial. The aim of this study was to compare the data obtained by three methods of assessment of body composition (DEXA; bioelectrical impedance, BIA; and near infrared interactance, NII).

METHOD:

Data on body composition obtained in 53 obese women by these three methods were compared, using the Bland and Altman procedure to test the relative validity.

RESULTS:

Although the correlation coefficients between DEXA and the two other methods were high, there were some major differences (limits of agreement) between data concerning fat and lean mass.

CONCLUSIONS:

The present study indicates that these methods cannot be considered as interchangeable and raises some questions on the use of BIA and NII as a single method of evaluation of body composition in clinical research and practice in obese populations.

[Indexed for MEDLINE]

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