Comparison of multifrequency bioelectrical impedance vs. Dual-energy X-ray absorptiometry for assessing body composition changes after participation in a 10-week resistance training program
Abstract
Schoenfeld, BJ, Nickerson, BS, Wilborn, CD, Urbina, SL, Hayward, SB, Krieger, J, Aragon, AA, and Tinsley, G. Comparison of multifrequency bioelectrical impedance vs. dual-energy x-ray absorptiometry for assessing body composition changes after participation in a 10-week resistance training program. J Strength Cond Res 34(3): 678–688, 2020—The purpose of this study was to assess the ability of multifrequency bioelectrical impedance analysis (MF-BIA) to determine alterations in total and segmental body composition across a 10-week resistance training (RT) program in comparison with the criterion reference dual-energy X-ray absorptiometry (DXA). Twenty-one young male volunteers (mean ± SD ; age = 22.9 ± 3.0 years; height = 175.5 ± 5.9 cm; body mass = 82.9 ± 13.6 kg; body mass index = 26.9 ± 3.6) performed an RT program that included exercises for all major muscle groups. Body composition was assessed using both methods before and after the intervention; change scores were determined by subtracting pre-test values from post-test values for percent body fat (∆%BF), fat mass (∆FM), and fat-free mass (∆FFM). Mean changes were not significantly different when comparing MF-BIA with DXA for ∆%BF (−1.05 vs. −1.28%), ∆FM (−1.13 vs. −1.19 kg), and FFM (0.10 vs. 0.37 kg, respectively). Both methods showed strong agreement for ∆%BF ( r = 0.75; standard error of the estimate [SEE] = 1.15%), ∆FM ( r = 0.84; SEE 1.0 kg), and ∆FFM ( r = 0.71; SEE of 1.5 kg). The 2 methods were poor predictors of each other in regards to changes in segmental measurements. Our data indicate that MF-BIA is an acceptable alternative for tracking changes in FM and FFM during a combined diet and exercise program in young, athletic men, but segmental lean mass measurements must be interpreted with circumspection.
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Schoenfeld et al. found no significant differences in mean changes between MF-BIA and DXA scans for FM, percent body fat, and FFM.
“For instance, Schoenfeld et al. found no significant differences in mean changes between MF-BIA and DXA scans for FM, percent body fat, and FFM (30).”
From Transforming body composition with semaglutide in adults with obesity and type 2 diabetes mellitus (2024) · cites this paper as [30]
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- Authors
- Schoenfeld, B. J., Nickerson, B. S., Wilborn, C. D., Urbina, S. L., Hayward, S. B., Krieger, J., Aragon, A. A., & Tinsley, G. M.
- Affiliations
- Lehman College (US)
- Texas A&M International University (US)
- University of Mary Hardin–Baylor (US)
- Weightology, LLC, Issaquah, Washington;
- California State University, Northridge (US)
- Texas Tech University (US)
- Corresponding author
- Schoenfeld, Brad J.
- Venue
- Journal of Strength and Conditioning Research
- Published
- 2020-03
- Volume
- 34
- Issue
- 3
- Pages
- 678-688
- ISSN
- 1064-8011 (ISSN-L)
- OpenAlex
- W2809256024
- Cited by
- 59
- References
- 38
- Citations by year
- 2026: 5 · 2025: 2 · 2024: 6 · 2023: 7 · 2022: 19 · 2021: 8 · 2020: 5 · 2019: 5 · 2018: 2
- FWCI
- 3.45
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- The Journal of Strength and Conditioning Research (publishedVersion)
- PubMed (publishedVersion)
- Topics
- Health Sciences › Medicine › Physiology › Body Composition Measurement Techniques
- Health Sciences › Medicine › Orthopedics and Sports Medicine › Sports Performance and Training
- Life Sciences › Biochemistry, Genetics and Molecular Biology › Cell Biology › Muscle metabolism and nutrition
- Keywords
- multifrequency bioelectrical impedance analysis, dual-energy X-ray absorptiometry, body composition assessment, resistance training, fat-free mass, fat mass, body fat percentage, measurement agreement, young men, diet and exercise intervention, measurement error correlation, measurement error covariance, measurement error variance, measurement error bias
- MeSH terms
- Adult, Body Composition, Exercise Therapy, Humans, Male, Sports, Absorptiometry, Photon, Body Mass Index, Electric Impedance, Adiposity, Resistance Training, Young Adult
About these checks
Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.
Statistics and arithmetic are recomputed, not judged.
Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.
What counts as a claim ›How we measure confidence ›How we check this ›
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