Reproducibility and validity of a-mode ultrasound for body composition measurement and classification in overweight and obese men and women

Journal article


Smith-Ryan, Abbie E., Fultz, Sarah N., Melvin, Malia N., Wingfield, Hailee L. and Woessner, Mary N.. (2014). Reproducibility and validity of a-mode ultrasound for body composition measurement and classification in overweight and obese men and women. PLoS ONE. 9(3), pp. 1-8. https://doi.org/10.1371/journal.pone.0091750
AuthorsSmith-Ryan, Abbie E., Fultz, Sarah N., Melvin, Malia N., Wingfield, Hailee L. and Woessner, Mary N.
Abstract

Identifying portable methods to measure body composition may be more advantageous than using body mass index (BMI) to categorize associated health consequences. Purpose: To compare the validity and reliability of a portable A-mode ultrasound (US) to a criterion three compartment model (3C) for the measurement of body composition. Methods: Forty-seven overweight and obese subjects participated in this study. Body composition was measured once via air displacement plethysmography for body density (Bd) and bioelectrical impedance spectroscopy for total body water (TBW) for the 3C calculations. Ultrasound measurements (BodyMetrix, Intelametrix) were made using an A mode, 2.5- MHz transmitter. All measurements were made on the right side of the body at 7 skinfold sites. The US software calculated percent body fat (%BF), fat mass (FM) and fat free mass (FFM) from the 7-site Jackson and Pollock equation. Results: %BF and FM, respectively, measured by the US (29.1±6.5%; 27.4±8.1 kg) was significantly lower compared to the 3C model (33.7±7.6%; 31.8±9.8 kg; p<0.0005). Fat free mass was significantly higher for the US (66.7±13.0 kg) compared to the 3C model (62.3±12.6; p = 0.001). The US demonstrated respectable reliability for %BF, FM, and FFM with intraclass correlation coefficients (ICC) ranging from 0.84–0.98 and standard error of the measurement (SEM) values and 2.2%BF, 1.9 kg, 1.9 kg, respectively. Discussion: The US was found to under predict %BF and FM with large deviations from the criterion (n = 10>4%BF error). While the US was not valid in this population, it was reliable producing results with minimal error, suggesting this technique may be effective for tracking changes in a weight loss or clinical setting.

Year2014
JournalPLoS ONE
Journal citation9 (3), pp. 1-8
PublisherPublic Library of Science
ISSN1932-6203
Digital Object Identifier (DOI)https://doi.org/10.1371/journal.pone.0091750
Scopus EID2-s2.0-84897499609
Open accessPublished as ‘gold’ (paid) open access
Research or scholarlyResearch
Page range1-8
Publisher's version
License
File Access Level
Open
Output statusPublished
Publication dates
Online11 Mar 2014
Publication process dates
Accepted14 Feb 2014
Deposited06 May 2021
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https://acuresearchbank.acu.edu.au/item/8vz8y/reproducibility-and-validity-of-a-mode-ultrasound-for-body-composition-measurement-and-classification-in-overweight-and-obese-men-and-women

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