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The influence of body position on bioelectrical impedance spectroscopy measurements in young children

The influence of body position on bioelectrical impedance spectroscopy measurements in young children
The influence of body position on bioelectrical impedance spectroscopy measurements in young children
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 (3.5 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.
2045-2322
Lyons-Reid, Jaz
0cf7e7b8-ffe9-4ef5-ba37-56b571eaa926
Ward, Leigh C
68d08d29-e7dd-4ac5-b14c-0fdb9bab70d9
Tint, Mya Thway
3aaf54db-4dbd-4d6b-90ae-440a18e381ef
Kenealy, Timothy
e749549b-5513-4eb0-9789-2f2b0cd82576
Godfrey, Keith
0931701e-fe2c-44b5-8f0d-ec5c7477a6fd
Chan, Shiao-Yng
3c9d8970-2cc4-430a-86a7-96f6029a5293
Cutfield, Wayne
a01589bd-5b82-49fa-89e1-137e6f59e24d
Lyons-Reid, Jaz
0cf7e7b8-ffe9-4ef5-ba37-56b571eaa926
Ward, Leigh C
68d08d29-e7dd-4ac5-b14c-0fdb9bab70d9
Tint, Mya Thway
3aaf54db-4dbd-4d6b-90ae-440a18e381ef
Kenealy, Timothy
e749549b-5513-4eb0-9789-2f2b0cd82576
Godfrey, Keith
0931701e-fe2c-44b5-8f0d-ec5c7477a6fd
Chan, Shiao-Yng
3c9d8970-2cc4-430a-86a7-96f6029a5293
Cutfield, Wayne
a01589bd-5b82-49fa-89e1-137e6f59e24d

Lyons-Reid, Jaz, Ward, Leigh C, Tint, Mya Thway, Kenealy, Timothy, Godfrey, Keith, Chan, Shiao-Yng and Cutfield, Wayne (2021) The influence of body position on bioelectrical impedance spectroscopy measurements in young children. Scientific Reports. (doi:10.21203/rs.3.rs-310989/v1).

Record type: Article

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 (3.5 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.

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More information

Submitted date: 9 March 2021
e-pub ahead of print date: 22 March 2021
Published date: 14 May 2021

Identifiers

Local EPrints ID: 448658
URI: http://eprints.soton.ac.uk/id/eprint/448658
ISSN: 2045-2322
PURE UUID: 781c27da-24b4-4c86-bc91-51f54a75efca
ORCID for Keith Godfrey: ORCID iD orcid.org/0000-0002-4643-0618

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Date deposited: 29 Apr 2021 16:31
Last modified: 08 Oct 2021 01:34

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Contributors

Author: Jaz Lyons-Reid
Author: Leigh C Ward
Author: Mya Thway Tint
Author: Timothy Kenealy
Author: Keith Godfrey ORCID iD
Author: Shiao-Yng Chan
Author: Wayne Cutfield

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