Cited by 46Body Composition Measurement TechniquesElectrical and Bioimpedance TomographyMuscle metabolism and nutrition

The DOI matches its Crossref record; 43 of the 43 references it cites were found in a registry or an index.

Longitudinal agreement of four bioimpedance analyzers for detecting changes in raw bioimpedance during purposeful weight gain with resistance training

Abstract

Background Due to inherent errors involved in the transformation of raw bioelectrical variables to body fluids or composition estimates, the sole use of resistance (R), reactance (Xc), and phase angle (φ) has been advocated when quantifying longitudinal changes. The aim of this investigation was to assess the ability of four bioimpedance analyzers to detect raw bioimpedance changes induced by purposeful weight gain with resistance training.Methods Twenty-one resistance trained males completed a 6-week lifestyle intervention with the aim of purposeful weight gain. Bioimpedance analysis was performed before and after the intervention using four different analyzers (MFBIA InBody: InBody 770; MFBIA SECA: Seca mBCA 515/514; BIS: ImpediMed SFB7; SFBIA: RJL Quantum V) for the quantification of R, Xc, and φ at the 50-kHz frequency. Repeated measures ANOVA and follow up tests were performed.Results Analysis revealed main effects of time and method for R, Xc, and φ (p ≤ 0.02), without significant time x method interactions (p ≥ 0.07). Follow up for time main effects indicated that, on average, R decreased by 4.5-5.8%, Xc decreased by 2.3-4.0%, and φ increased by 1.8-2.6% across time for all analyzers combined. However, varying levels of disagreement in absolute values were observed for each bioelectrical variable.Conclusions The differences in absolute bioelectrical values suggests that analyzers should not be used interchangeably, which holds particular importance when reference values are utilized. Despite absolute differences, analyzers with varying characteristics demonstrated similar abilities to detect changes in R, Xc, and φ over time.

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Crossref · 10.1038/s41430-020-00811-3

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Metadata

Authors
Stratton, M. T., Smith, R. W., Harty, P. S., Rodriguez, C., Johnson, B. A., Dellinger, J. R., Williams, A. D., White, S. J., Benavides, M. L., & Tinsley, G. M.
Affiliations
Texas Tech University (US)
Corresponding author
Tinsley, Grant M.
Venue
European Journal of Clinical Nutrition
Published
2021-03-16
Volume
75
Issue
7
Pages
1060-1068
ISSN
  • 0954-3007 (ISSN-L)
  • 1476-5640
OpenAlex
W3137290513
Cited by
46
References
43
Citations by year
2026: 8 · 2025: 8 · 2024: 6 · 2023: 8 · 2022: 13 · 2021: 3
FWCI
4.74
Type
journal article
Language
en
Open access
closed
Locations
  • European Journal of Clinical Nutrition (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Health Sciences › Medicine › Physiology (medical) › Body Composition Measurement Techniques
  • Physical Sciences › Engineering › Electrical and Electronic Engineering › Electrical and Bioimpedance Tomography
  • Health Sciences › Nursing › Nutrition and Dietetics › Muscle metabolism and nutrition
Keywords
bioelectrical impedance analysis, resistance training, weight gain, resistance, reactance, phase angle, body composition, reference values
MeSH terms
Body Composition, Humans, Male, Research Design, Weight Gain, Electric Impedance, Resistance Training

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