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KMID : 0388120020110040398
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Journal of Korean Society for the Study of Obesity
2002 Volume.11 No. 4 p.398 ~ p.405
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Evaluation of Simple Methods to Estimate Body Composition in Female
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Kim Hyun-Soo
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Abstract
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Background: Simple methods are needed to assess the total body fat of individual human subjects. The bioelectrical impedance (BI) techniques have been developed as a convenient, valid approach to estimate body composition in normal, healthy adults. However, the validity of these methods has not been compared in the Korea subjects. The purposes of this study were (1) to evaluate the validity of % body fat using 5 kinds of indirect method-5 brands of BI analyzers against body fat data derived by underwater weighing, and (2) to discuss the accuracy of each mothod.
Methods: The subjects were 61 women, aged 20 to 59 years (41.3±12.0 yr). The BI analyzers used for this study were the InBody 3.0, HBF-306, GIF-891DX, TBF-611 and NEOSCAN.
Results: Percentage of body fat estimated by each method was significantly correlated(r=0.67-0.77) with the data from underwater weighing, and standard error of estimate (SEE) for subject.
Conclusion: The accuracy of %fat estimated by the GIF-891DX was slightly worse than those for the other BI analyzers. From these results, it is concluded that % body fat can be estimated by each method without a large discrepancy. However, the validity of each method for estimating % body fat may not be as high as other reference methods. Further research is necessary for improvement of prediction accuracy.
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KEYWORD
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Underwater Weighing, Bioelectrical Impedance, Body Fat
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