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Development of Bioelectrical Impedance Analyzer for Korean in Telemedicine  

문재국 (연세대학교 보건과학대학 의공학과)
서광석 (연세대학교 보건과학대학 의공학과)
임택균 (연세대학교 보건과학대학 의공학과)
신태민 (연세대학교 보건과학대학 의공학과)
윤형로 (연세대학교 보건과학대학 의공학과)
Publication Information
Journal of Biomedical Engineering Research / v.23, no.5, 2002 , pp. 413-418 More about this Journal
Abstract
The purpose of this study was to design a single frequency BIA(Bioelectrical Impedance Analyzer) which can measure body impedance when patient is sitting on the toilet and to develope a prediction equation for designed BIA. For the purpose of this study, we acquired body impedances with designed BIA from 181 subjects composed of healthy Korean by attaching electrodes to suitable positions(wrist and thigh) for toilet measurement. We computed an appropriate FFM(Fat Free Mass) for Korean using modified-Siri equation to the same subjects instead of Siri equation which nay cause accuracy problems in hydrodensitometry when it applied to Korean. We used this FFM as reference value and developed a Korean FFM prediction equation based on body impedance index, body weight and sex. Correlation coefficient between prediction value and reference value of FFM was extremely high (r = 0.977) and SEE(Standard Error of Estimation) was low 2.47kg.(p<0.05) For comparison between existing electrode-attaching method and our method for toilet measurement, we acquired body impedance with designed BIA from same subjects attaching electrodes on existing positions (wrist and ankle) and made FFM prediction equation for BIA. Correlation coeffient between predicted value and reference value was 0.978 and SEE was 2.43kg(p<0.05). It means that the developed system has not significant differences with existing method. In conclusion bioelectrical impedance analyzer and the FFM prediction equation developed in this paper are evaluated to he adequate to compute FFM of Korean.
Keywords
Body fat; Bioelectrical impedance analysis; Hydrodensitometry; Fat free mass prediction equation; Telemedicine;
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