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Volume 20
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10.3390/ijerph20010686
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Article

Bioimpedance-Derived Membrane Capacitance: Clinically Relevant Sources of Variability, Precision, and Reliability

by
Valene Garr Barry
1,*,
Jasmine L. Chiang
2,
Kaylan G. Bowman
3,
Kristina D. Johnson
3 and
Barbara A. Gower
3
1
Department of Obstetrics and Gynecology, Division of Clinical Research, School of Medicine in St. Louis, Washington University, St. Louis, MO 63108, USA
2
Department of Obstetrics and Gynecology, School of Medicine, The University of Alabama at Birmingham, Birmingham, AL 35294, USA
3
Department of Nutrition Sciences, School of Health Professions, The University of Alabama at Birmingham, Birmingham, AL 35294, USA
*
Author to whom correspondence should be addressed.
Int. J. Environ. Res. Public Health 2023, 20(1), 686; https://doi.org/10.3390/ijerph20010686
Submission received: 11 November 2022 / Revised: 23 December 2022 / Accepted: 26 December 2022 / Published: 30 December 2022
(This article belongs to the Special Issue Application of Bioelectrical Impedance Analysis (BIA) in Human Health and Life)
Versions Notes

Abstract

Membrane capacitance (CM), a bioimpedance-derived measure of cell membrane health, has been suggested as an indicator of health status. However, there are few published data to support its use in clinical settings. Hence, this study evaluated clinically relevant sources of variation, precision, and reliability of CM measurements. This longitudinal study included 60 premenopausal women. Sources of variability (e.g., demographics, body composition, serum measures, diet) were identified by stepwise regression. Precision and reliability were assessed by the coefficient of variation (CV), intraclass correlation coefficients (ICC), and technical error of the measurement (TEM) for intra-day (30 min apart) and inter-day measurements (7–14 days apart). Body composition, temperature, and metabolic activity were identified as sources of variability. CM measurements had high precision (CV = 0.42%) and high reliability for intra-day (ICC = 0.996) and inter-day (ICC = 0.959) measurements, independent of menstrual cycle and obesity status. Our results showed that CM measurements are sensitive to clinical factors and have high precision and reliability. The results of this study suggest that CM is sufficiently reliable for health status monitoring in conditions with variation in body composition, metabolic activity, or body temperature among premenopausal women.
Keywords: membrane capacitance; bioimpedance; reliability; women; health status membrane capacitance; bioimpedance; reliability; women; health status

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MDPI and ACS Style

Garr Barry, V.; Chiang, J.L.; Bowman, K.G.; Johnson, K.D.; Gower, B.A. Bioimpedance-Derived Membrane Capacitance: Clinically Relevant Sources of Variability, Precision, and Reliability. Int. J. Environ. Res. Public Health 2023, 20, 686. https://doi.org/10.3390/ijerph20010686

AMA Style

Garr Barry V, Chiang JL, Bowman KG, Johnson KD, Gower BA. Bioimpedance-Derived Membrane Capacitance: Clinically Relevant Sources of Variability, Precision, and Reliability. International Journal of Environmental Research and Public Health. 2023; 20(1):686. https://doi.org/10.3390/ijerph20010686

Chicago/Turabian Style

Garr Barry, Valene, Jasmine L. Chiang, Kaylan G. Bowman, Kristina D. Johnson, and Barbara A. Gower. 2023. "Bioimpedance-Derived Membrane Capacitance: Clinically Relevant Sources of Variability, Precision, and Reliability" International Journal of Environmental Research and Public Health 20, no. 1: 686. https://doi.org/10.3390/ijerph20010686

APA Style

Garr Barry, V., Chiang, J. L., Bowman, K. G., Johnson, K. D., & Gower, B. A. (2023). Bioimpedance-Derived Membrane Capacitance: Clinically Relevant Sources of Variability, Precision, and Reliability. International Journal of Environmental Research and Public Health, 20(1), 686. https://doi.org/10.3390/ijerph20010686

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