Bioelectrical Impedance Analysis in a Mathematical Model for Estimating Fat-free Mass in Multiple Segments in Elderly Taiwanese Males

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Title:	Bioelectrical Impedance Analysis in a Mathematical Model for Estimating Fat-free Mass in Multiple Segments in Elderly Taiwanese Males
Authors:	Yeh, CW (Yeh, Chingwen) Chen, YJ (Chen, Yu-Jen) Lai, LY (Lai, Li-Yun) Jang, TR (Jang, Tsong-Rong) Chiang, J (Chiang, Jasson) Chen, YY (Chen, Yu-Yawn) Hsieh, KC (Hsieh, Kuen-Chang)
Contributors:	Dept Phys Educ
Keywords:	bioelectrical impedance analysis dual-energy X-ray absorptiometry estimation equations segment fat free mass
Date:	2012-12
Issue Date:	2013-02-18 15:22:33 (UTC+8)
Abstract:	Background: This research applied bioelectrical impedance analysis (BIA) and Dual-Energy X-ray AbsorptioMetry (DXA) to measure the body composition of Taiwan elderly. We developed the new mathematical estimation model for fat free mass of multiple segments. Methods: The modified BIA instrument with 8 electrodes (BIA(8)) at 50 kHz and 0.4 mA was used to measure the bioelectrical impedance of whole body and all limb segments of 33 male elderly in Taiwan. The criterion fat free mass (FFM) values in whole body and all limb segments were determined by DXA. After analyzing by linear regression, we obtained the FFM estimation equation for limb segments. The Bland-Altmen analysis were used to evaluate the differences existed between the estimation FFM from equation by BIA and from by DXA. Result: The correlation efficient (R) with standard deviation (SD) of FFM measured by DXA v.s. estimated by BIA in whole body, lower limbs, upper limbs and trunk were 0.942 with 2.660 kg, 0.859 with 0.713 kg, 0.922 with 0.265 kg and 0.884 with 1.917 kg, respectively. The relative high in the weight coefficients of h(2)/Z for estimation equation implied the critical role played by height and BIA values. Conclusion: In summary, the multiple segments FFM estimated by BIA were highly relative to that of determined by DXA for elderly in Taiwan. It is feasible to apply in monitoring the body composition in elderly by fast, non-invasive and convenient way. Copyright (c) 2012, Taiwan Society of Geriatric Emergency & Critical Care Medicine. Published by Elsevier Taiwan LLC. All rights reserved
Relation:	INTERNATIONAL JOURNAL OF GERONTOLOGY 卷: 6 期: 4 頁數: 273-277
Appears in Collections:	[Department of Physical Education] journal articles

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