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Sensor-Based Garments that Enable the Use of Bioimpedance Technology: Towards Personalized Healthcare Monitoring
University of Borås, School of Engineering.
2013 (English)Doctoral thesis, monograph (Other academic)
Abstract [en]

Functional garments for physiological sensing purposes have been utilized in several disciplines i.e. sports, firefighting, military and medical. In most of the cases textile electrodes (Textrodes) embedded in the garment are employed to monitor vital signs and other physiological measurements. Electrical Bioimpedance (EBI) is a non-invasive and effective technology that can be used for detection and supervision of different health conditions. In some specific applications such as body composition assessment EBIS has shown encouraging results proving good degree of effectiveness and reliability. In a similar way Impedance Cardiography (ICG) is another modality of EBI primarily concerned with the determination of Stroke Volume SV, indices of contractility, and other aspects of hemodynamics. EBI technology in the previously mentioned modalities can benefit from a integration with a garment; however, a successful implementation of EBI technology depends on the good performance of textile electrodes. The main weakness of Textrodes is a deficient skin-electrode interface which produces a high degree of sensitivity to signal disturbances. This sensitivity can be reduced with a suitable selection of the electrode material and an intelligent and ergonomic garment design that ensures an effective skin-electrode contact area. This research work studies the performance of textile electrodes and garments for EBI spectroscopy for Total Body Assessment and Transthoracic Electrical Bioimpedance (TEB) for cardio monitoring. Their performance is analyzed based on impedance spectra, estimation of parameters, influence of electrode polarization impedance Zep and quality of the signals using as reference Ag/AgCl electrodes. The study includes the analysis of some characteristics of the textile electrodes such as conductive material, skin-electrode contact area size and fabric construction. The results obtained in this research work present evidence that textile garments with a dry skinelectrode interface like the ones used in research produce reliable EBI measurements in both modalities: BIS for Total Body Assessment and TEB for Impedance Cardiography. Textile technology, if successfully integrated, may enable the utilization of EBI in both modalities and consequently implementing wearable applications for home and personal health monitoring.

Place, publisher, year, edition, pages
echnology and Health, KTH Royal Institute of Technology , 2013.
TRITA-STH : report, ISSN 1653-3836 ; 6
Keyword [en]
National Category
Engineering and Technology
URN: urn:nbn:se:hb:diva-3645Local ID: 2320/11963ISBN: 978-91-7501-603-0OAI: diva2:877035
Available from: 2015-12-04 Created: 2015-12-04

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Márquez Ruiz, Juan Carlos
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