Name
Title | ||
|---|---|---|
Feasibility of Long-Term Monitoring of Multifrequency and Multisegment Body Impedance by Portable Devices |
Abstract | ||
|---|---|---|
Available devices for multisegment bioelectric impedance spectroscopy (BIS) do not allow monitoring the body composition without interfering with the subject's activities. In this study, we evaluated the feasibility of unobtrusive multisegment BIS with small portable devices by presenting and testing a DSP-based prototype specifically designed to minimize weight, size, and power consumption of BIS systems. The prototype consists in 1) a tetrapolar electrodes setup; 2) an analog board with a transconductance amplifier which injects the stimulation current and an instrumentation amplifier which senses the associated voltage drop; and 3) a digital board with a digital signal processor for data processing, for system calibration and for generation of the stimulating waveforms. To optimize the design, the prototype employs square-wave stimulating waveforms, easier to be generated compared to sinusoids. The performances of the prototype were tested by monitoring BIS in the arm, trunk, and leg on a group of 20 volunteers (ten males and ten females) during a 40-min experimental protocol which included postural changes. Results demonstrated the capability of our prototype to follow impedance changes due to the redistribution of fluids after postural changes and to detect gender differences likely associated to the diverse composition and size of body segments in males and females. |
Year | DOI | Venue |
|---|---|---|
2014 | 10.1109/TBME.2014.2309983 | Biomedical Engineering, IEEE Transactions |
Keywords | DocType | Volume |
bioelectric potentials,medical signal processing,patient monitoring,portable instruments,BIS,DSP-based prototype,analog board,associated voltage drop,body composition,body segments,data processing,digital board,digital signal processor,fluid redistribution,gender differences,instrumentation amplifier,long-term monitoring feasibility,multifrequency body impedance,multisegment bioelectric impedance spectroscopy,multisegment body impedance,postural changes,small portable devices,square-wave stimulating waveforms,stimulation current,system calibration,tetrapolar electrodes setup,transconductance amplifier,unobtrusive multisegment,Bioimpedance,extracellular water volume,gender,posture,stray capacitance | Journal | 61 |
Issue | ISSN | Citations |
6 | 0018-9294 | 1 |
PageRank | References | Authors |
0.51 | 0 | 4 |
Name | Order | Citations | PageRank |
|---|---|---|---|
| Federica Villa | 1 | 5 | 3.37 |
| Alessandro Magnani | 2 | 11 | 4.17 |
| Giampiero Merati | 3 | 3 | 1.59 |
| Paolo Castiglioni | 4 | 53 | 17.20 |