Journal article
Validation of Bioelectrical Impedance Spectroscopy to Measure Total Body Water in Resistance Trained Males
International Journal of Sport Nutrition and Exercise Metabolism, Vol.25(5), pp.494-503
2015
PMID: 26011918
Abstract
The three-compartment (3-C) model of physique assessment (fat mass, fat-free mass, water) incorporates total body water (TBW) whereas the two-compartment model (2-C) assumes a TBW of 73.72%. Deuterium dilution (D2O) is the reference method for measuring TBW but is expensive and time consuming. Multi-frequency bioelectrical impedance spectroscopy (BIS SFB7TM) estimates TBW instantaneously and claims high precision. Our aim was to compare SFB7 with D2O for estimating TBW in resistance trained males (BMI >25kg/m2). We included TBWBIS estimates in a 3-C model and contrasted this and the 2-C model against the reference 3-C model using TBWD2O. TBW of 29 males (32.4±8.5 years; 183.4±7.2 cm; 92.5±9.9 kg; 27.5±2.6 kg/m2) was measured using SFB7 and D2O. Body density was measured by BODPOD, with body composition calculated using the Siri equation. TBWBIS values were consistent with TBWD2O (SEE = 2.65L; TE = 2.6L) as were ¿ values from the 3-C model (BODPOD + TBWBIS) with the 3-C reference model (SEE = 2.20%; TE = 2.20%). For subjects with TBW more than 1% from the assumed 73.72% (n=16), ¿ from the 2-C model differed significantly from the reference 3-C model (Slope 0.6888; Intercept 5.093). The BIS SFB7TM measured TBW accurately compared to D2O. The 2C model with an assumed TBW of 73.72% introduces error in the estimation of body composition. We recommend TBW should be measured, either via the traditional D2O method or when resources are limited, with BIS, so that body composition estimates are enhanced. The BIS can be accurately used in 3C equations to better predict TBW and BF% in resistance trained males compared to a 2C model.
Details
- Title
- Validation of Bioelectrical Impedance Spectroscopy to Measure Total Body Water in Resistance Trained Males
- Authors
- Ava Kerr (Author) - University of the Sunshine Coast - Faculty of Science, Health, Education and EngineeringGary J Slater (Author) - University of the Sunshine Coast - Faculty of Science, Health, Education and EngineeringNuala Byrne (Author) - Bond UniversityJanet Chaseling (Author) - Griffith University
- Publication details
- International Journal of Sport Nutrition and Exercise Metabolism, Vol.25(5), pp.494-503
- Publisher
- Human Kinetics
- Date published
- 2015
- DOI
- 10.1123/ijsnem.2014-0188
- ISSN
- 1526-484X
- PMID
- 26011918
- Copyright note
- Copyright © 2015 The Author. This manuscript is as accepted for publication in the International Journal of Sport Nutrition & Excersie Metabolism, Vol 25, No. 5. The definitive version is available at: http://dx.doi.org/10.1123/ijsnem.2014-0188
- Organisation Unit
- University of the Sunshine Coast, Queensland; School of Health - Nutrition & Dietetics; School of Health and Sport Sciences - Legacy; Academic Support Unit; Technical and Work Integrated Learning (WIL) Operations - Legacy; School of Health and Behavioural Sciences - Legacy
- Language
- English
- Record Identifier
- 99449111002621
- Output Type
- Journal article
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