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Influence of posture and frequency modes in total body water estimation using bioelectrical impedance spectroscopy in boys and adult males

journal contribution
posted on 2023-05-18, 19:46 authored by Kagawa, M, Wishart, C, Andrew HillsAndrew Hills
The aim of the study was to examine differences in total body water (TBW) measured using single-frequency (SF) and multi-frequency (MF) modes of bioelectrical impedance spectroscopy (BIS) in children and adults measured in different postures using the deuterium (2H) dilution technique as the reference. Twenty-three boys and 26 adult males underwent assessment of TBW using the dilution technique and BIS measured in supine and standing positions using two frequencies of the SF mode (50 kHz and 100 kHz) and the MF mode. While TBW estimated from the MF mode was comparable, extra-cellular fluid (ECF) and intra-cellular fluid (ICF) values differed significantly (p < 0.01) between the different postures in both groups. In addition, while estimated TBW in adult males using the MF mode was significantly (p < 0.01) greater than the result from the dilution technique, TBW estimated using the SF mode and prediction equation was significantly (p < 0.01) lower in boys. Measurement posture may not affect estimation of TBW in boys and adult males, however, body fluid shifts may still occur. In addition, technical factors, including selection of prediction equation, may be important when TBW is estimated from measured impedance.

History

Publication title

Nutrients

Volume

6

Issue

5

Pagination

1886-1898

ISSN

2072-6643

Department/School

School of Health Sciences

Publisher

MDPI Publishing

Place of publication

Switzerland

Repository Status

  • Restricted

Socio-economic Objectives

Men's health

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