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Title: The influence of body position on bioelectrical impedance spectroscopy measurements in young children
Authors: Lyons-Reid, Jaz
Ward, Leigh C.
Tint, Mya-Thway 
Kenealy, Timothy
Godfrey, Keith M.
Chan, Shiao-Yng 
Cutfield, Wayne S.
Issue Date: 14-May-2021
Publisher: Nature Research
Citation: Lyons-Reid, Jaz, Ward, Leigh C., Tint, Mya-Thway, Kenealy, Timothy, Godfrey, Keith M., Chan, Shiao-Yng, Cutfield, Wayne S. (2021-05-14). The influence of body position on bioelectrical impedance spectroscopy measurements in young children. Scientific Reports 11 (1) : 10346. ScholarBank@NUS Repository.
Rights: Attribution 4.0 International
Abstract: Bioelectrical impedance techniques are easy to use and portable tools for assessing body composition. While measurements vary according to standing vs supine position in adults, and fasting and bladder voiding have been proposed as additional important influences, these have not been assessed in young children. Therefore, the influence of position, fasting, and voiding on bioimpedance measurements was examined in children. Bioimpedance measurements (ImpediMed SFB7) were made in 50 children (3.38 years). Measurements were made when supine and twice when standing (immediately on standing and after four minutes). Impedance and body composition were compared between positions, and the effect of fasting and voiding was assessed. Impedance varied between positions, but body composition parameters other than fat mass (total body water, intra- and extra-cellular water, fat-free mass) differed by less than 5%. There were no differences according to time of last meal or void. Equations were developed to allow standing measurements of fat mass to be combined with supine measurements. In early childhood, it can be difficult to meet requirements for fasting, voiding, and lying supine prior to measurement. This study provides evidence to enable standing and supine bioimpedance measurements to be combined in cohorts of young children. © 2021, The Author(s).
Source Title: Scientific Reports
ISSN: 2045-2322
DOI: 10.1038/s41598-021-89568-8
Rights: Attribution 4.0 International
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