Proceedings of the KOSOMBE Conference (대한의용생체공학회:학술대회논문집)

The Korean Society of Medical and Biological Engineering (대한의용생체공학회)
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Quantitative analysis of body postural stability

신체자세 안정도의 정량분석에 관한 연구

  • Cha, E.J. (Dep. of Biomedical Engineering, Chungbuk National University Medical College) ;
  • Kim, K.A. (Dep. of Biomedical Engineering, Chungbuk National University Medical College) ;
  • Lee, T.S. (Dep. of Biomedical Engineering, Chungbuk National University Medical College) ;
  • Lee, K.M. (Dep. of Rehabilitation Medicine, Chungbuk National University Medical College) ;
  • Kim, N.K. (Dep. of Biomedical Engineering, Cheonbuk National University Medical College) ;
  • Kim, Y.H. (Dep. of Rehabilitation Medicine, Cheonbuk National University Medical College)
  • 차은종 (충북대학교 의과대학 의공학교실) ;
  • 김경아 (충북대학교 의과대학 의공학교실) ;
  • 이태수 (충북대학교 의과대학 의공학교실) ;
  • 이경무 (충북대학교 의과대학 재활의학교실) ;
  • 김남균 (전북대학교 의과대학 의공학교실) ;
  • 김연희 (전북대학교 의과대학 재활의학교실)
  • Published : 1997.11.28
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Abstract

Posturography stands or quantitative assessment of body postural stability analysis. The present study developed a balance plate system to monitor patient's center of pressure (COP) movement and to analyze its stability. An equilateral triangular shaped plate was made of duralumin and forces were measured on the three vertices of the plate using industrial load cells. Specially designed electronic circuit picked up force signals ed into data acquisition system to calculate the cartesian coordinates of COP. COP calculation error was less than 2%. The force signals enabled to compute stability measures, which consisted of a variety of clinical parameters related to postural stability. Clinical experiments were carefully designed and performed on 40 normal subjects. The results were that 1) postural stability decreased with age and 2) the best parameters were those of posture deviation measures. A customized PC-based software package was developed to apply the present technique with a great convenience to monitoring and analyzing postural stability in an accurate and quantitative way.

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