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http://dx.doi.org/10.9723/jksiis.2014.19.5.025

Analysis of Bioimpedance Change and the Characteristics of Blood Pressure according to Posture  

Cho, Young Chang (경운대학교 항공정보통신공학과)
Kim, Min Soo (경운대학교 항공정보통신공학과)
Publication Information
Journal of Korea Society of Industrial Information Systems / v.19, no.5, 2014 , pp. 25-31 More about this Journal
Abstract
Bioelectrical Impedance Analysis(BIA) is a widely used method for estimating body composition changes which is a non-invasive, inexpensive, safety and reproductive method. We studied the bioimpedance change and the distinction of blood pressure according to body posture and conducted three kinds of experiments: the real-time bioimpedance measurement, the simulation using equivalent circuit model and the blood pressure measurement. Bioimpedance is measured during 4 minutes at the multi-frequency(1 kHz, 10 kHz, 20 kHz, 50 kHz, 70 kHz, 100 kHz). From the experiment results, the changes in body postures result in changes of resistance and reactance, with an average rapid increase of body impedance when going from standing, sitting to supine. Specially, the laying resistance on average was 16.49% higher than supine resistance at 50 kHz and the laying reactance measurement was also 26.05% higher than sitting reactance at 1 kHz. Blood pressure in standing posture was higher than those in other postures both in maximum($125.14{\pm}12.30$) and in minimum($75.57{\pm}10.31$). The results of BIA and blood pressure in this study will be contributed to the research on acute illness, extreme fat, and body shape abnormalities.
Keywords
bio-electrical impedance analysis(BIA); multi-frequency; posture impedance; non-invasive; body composition;
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Times Cited By KSCI : 2  (Citation Analysis)
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