Bioelectrical Impedance and Body Composition: Present Status and Future Directions
- 27 April 2009
- journal article
- review article
- Published by Oxford University Press (OUP) in Nutrition Reviews
- Vol. 52 (4), 123-131
- https://doi.org/10.1111/j.1753-4887.1994.tb01404.x
Abstract
Single-frequency bioelectrical impedance analyzers used to assess body composition are being replaced by multiple-frequency analyzers. At low frequencies, the current flows primarily through extracellular fluids; at high frequencies, it completely penetrates all body tissues. Measures of bioelectrical impedance at multiple frequencies can differentiate total and extracellular fluid compartments in the body. This has considerable value for assessing clinical and nutritional status. Impedance measures at a single frequency contain only a small window of the available impedance spectrum information, which may explain the difficulty in discriminating among individuals. The impedance spectrum and its analysis may provide a much clearer picture of individual differences in body water and body composition. With increasing clinical uses of bioelectrical impedance in individuals and sample populations, the use of multiple-frequency impedance may help to elucidate differences that are not discernible with single-frequency impedance.Keywords
This publication has 35 references indexed in Scilit:
- Reliability for multiple frequency bioelectric impedanceAmerican Journal of Human Biology, 1994
- Unproved prediction of extracellular and total body water using impedance loci generated by multiple frequency bioelectrical impedance analysisPhysics in Medicine & Biology, 1993
- Bioelectrical impedance and body compositionThe Lancet, 1993
- Body composition by bioelectric impedance and densitometry in black womenAmerican Journal of Human Biology, 1993
- MuIti‐frequency bioelectrical impedance augments the diagnosis and management of lymphoedema in post‐mastectomy patientsEuropean Journal of Clinical Investigation, 1992
- Estimation of total body water by bioelectrical impedance analysis in blacksAmerican Journal of Human Biology, 1991
- Evaluation of impedance technique for fluid-volume monitoring during hemodialysisJournal of Clinical Monitoring and Computing, 1985
- CHANGES DURING HEMODIALYSIS IN TOTAL BODY WATER, CARDIAC OUTPUT AND CHEST FLUID AS DETECTED BY BIOELECTRICAL IMPEDANCE ANALYSISASAIO Journal, 1979
- Extracellular volume: its structure and measurement and the influence of age and diseaseThe Journal of Pediatrics, 1961
- THE CONDUCTIVITY OF LIVING TISSUESAnnals of the New York Academy of Sciences, 1957