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Comparison of Dual-Energy X-Ray Absorptiometry (DXA) versus a Multi-frequency Bioelectrical Impedance (InBody 770) Device for Body Composition Assessment after a 4-Week Hypoenergetic Diet

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posted on 2023-07-26, 14:37 authored by Jose Antonio, Madaline Kenyon, Anya Ellerbroek, Cassandra Carson, Victoria Burgess, Denvyr Tyler-Palmer, Jonathan Mike, Justin D. Roberts, Gerseli Angeli, Corey A. Peacock
The purpose of this investigation was to compare two different methods of assessing body composition (i.e., a multi-frequency bioelectrical impedance analysis (MF-BIA) and dual-energy x-ray absorptiometry (DXA)) over a four-week treatment period in exercise-trained men and women. Subjects were instructed to reduce their energy intake while maintaining the same exercise regimen for a period of four weeks. Pre and post assessments for body composition (i.e., fat-free mass, fat mass, percent body fat) were determined via the MF-BIA and DXA. On average, subjects reduced their energy intake by ~18 percent. The MF-BIA underestimated fat mass and percentage body fat and overestimated fat-free mass in comparison to the DXA. However, when assessing the change in fat mass, fat-free mass or percent body fat, there were no statistically significant differences between the MF-BIA vs. DXA. Overall, the change in percent body fat using the DXA vs. the MF-BIA was −1.3 ± 0.9 and −1.4 ± 1.8, respectively. Our data suggest that when tracking body composition over a period of four weeks, the MF-BIA may be a viable alternative to the DXA in exercise-trained men and women.

History

Refereed

  • Yes

Volume

4

Issue number

2

Page range

23

Publication title

Journal of Functional Morphology and Kinesiology

ISSN

2411-5142

Publisher

MDPI

File version

  • Published version

Language

  • eng

Legacy posted date

2019-05-23

Legacy creation date

2019-05-23

Legacy Faculty/School/Department

Faculty of Science & Engineering

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