1. Measuring body composition in dogs using bioelectrical impedance spectroscopy.
- Author
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Rae LS, Rand JS, and Ward LC
- Subjects
- Humans, Dogs, Animals, Electric Impedance, Body Water, Spectrum Analysis veterinary, Obesity veterinary, Absorptiometry, Photon veterinary, Absorptiometry, Photon methods, Reproducibility of Results, Body Mass Index, Body Composition, Dog Diseases
- Abstract
Assessment of body composition is an essential aspect of veterinary canine care, particularly as prevalence of overweight and obesity in dogs is increasing. Few quantitative objective methods for body composition measurement are available for routine clinical use. Bioelectrical impedance analysis is widely used in human medicine and nutritional assessment and although it has shown promise in production animals it has not yet been adopted for companion animals. The present study validated bioimpedance spectroscopy (BIS) against the reference method of dual-energy X-ray absorptiometry. Resistivity coefficients for use in BIS were determined: ρe = 444.8 and ρi = 1477.8 ohm.cm and used to predict fat-free mass (FFM) in a cohort of 35 mixed breed dogs. Overall, FFM was predicted to within 3.5% of reference values. At an individual level, FFM was predicted within 2 standard deviations (95% confidence) of 10%. BIS provides an objective quantitative alternative to the widely used semi-quantitative body condition scoring. In addition, BIS provides estimates of body water volumes (total, extra-and intracellular), information that can be useful in fluid management. BIS is inexpensive, and simple to perform but does require brief (<5 min) sedation of the animal., Competing Interests: Conflict of interest statement Author Ward consults to ImpediMed Ltd. ImpediMed had no involvement in the execution of this study or in the preparation of this manuscript. None of the authors has any other financial or personal relationships that could inappropriately influence or bias the content of the paper., (Copyright © 2024 The Authors. Published by Elsevier Ltd.. All rights reserved.)
- Published
- 2024
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