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A new approach for detection of leg movement using segmental electrical impedance changes

Authors
 C-G Song  ;  J-H Seo  ;  K-S Kim  ;  D-Y Youn  ;  D Won Kim 
Citation
 JOURNAL OF MEDICAL ENGINEERING & TECHNOLOGY , Vol.29(1) : 42-46, 2005 
Journal Title
JOURNAL OF MEDICAL ENGINEERING & TECHNOLOGY
ISSN
 0309-1902 
Issue Date
2005
MeSH
Adult ; Ankle Joint/physiology ; Diagnosis, Computer-Assisted/methods* ; Electric Impedance* ; Female ; Hip Joint/physiology ; Humans ; Knee Joint/physiology ; Leg/physiology* ; Male ; Movement/physiology* ; Physical Examination/methods* ; Reproducibility of Results ; Sensitivity and Specificity
Keywords
15764382
Abstract
The purpose of this paper is to provide a new approach for detection using bio-impedance. This impedance is measured by the four-electrode method. As the impedance changes resulting from ankle, knee, and hip movements depend on electrode placement, we determined the optimal electrode configurations for these movements by searching for high correlation coefficients, large impedance changes, and minimum interference in ten subjects (age: 20 +/- 4). Our optimal electrode configurations showed very strong relationships between the ankle joint angle and ankle impedance (gamma = - 0.913 +/- 0.03), between the knee joint angle and knee impedance (gamma = 0.944 +/- 0.02), and between the hip joint angle and hip impedance (gamma = 0.823 +/- 0.08). This study showed that lower leg movement could be easily measured by the impedance measurement system with two pairs of skin electrodes.
Full Text
http://informahealthcare.com/doi/abs/10.1080/03091900410001689658
DOI
10.1080/03091900410001689658
Appears in Collections:
1. College of Medicine (의과대학) > Dept. of Medical Engineering (의학공학교실) > 1. Journal Papers
Yonsei Authors
Kim, Deok Won(김덕원)
URI
https://ir.ymlib.yonsei.ac.kr/handle/22282913/147456
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