Bioimpedance in medicine: Measuring hydration influence

Hlubik, J.; Hlúbik, Pavol; Lhotska, Lenka

doi:10.1088/1742-6596/224/1/012135

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2022

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“…Since water is the main component of the cells and it is almost absent in fat, it is possible to deduce the amount of FFM from the water content. Consequently, FM is evaluated by simply subtracting the FFM to the total weight [8].…”

Section: Introductionmentioning

confidence: 99%

Metrological characterization of instruments for body impedance analysis

et al. 2022

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<p>Body impedance analysis (BIA) is used to evaluate the human body composition by measuring the resistance and reactance of human tissues with a high-frequency, low-intensity electric current. Nonetheless, the estimation of the body composition is influenced by many factors: body status, environmental conditions, instrumentation, and measurement procedure. This work studies the effect of the connection cables, conductive electrodes, adhesive gel, and BIA device characteristics on the measurement uncertainty. Tests were initially performed on electric circuits with passive elements and on a jelly phantom simulating the body characteristics. Results showed that the cables mainly contribute to increase the error on the resistance measurement, while the electrodes and the adhesive introduce a negligible disturbance on the measurement chain. This paper also proposes a calibration procedure based on a multivariate linear regression to compensate for the systematic error effect of BIA devices.</p>

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Section: Introductionmentioning

confidence: 99%