Fractal dynamics of body motion during walking in poststroke hemiplegic patients

Author

Sekine, M. ; Akay, M. ; Tamura, T. ; Agner, S.C. ; Higashi, Y. ; Fujimoto, T.

Author_Institution

Thayer Sch. of Eng., Dartmouth Coll., Hanover, NH, USA

Volume

1

fYear

2002

fDate

2002

Firstpage

9

Abstract

In this paper, we assess the complexity of body motion during walking in poststroke hemiplegic patients. The body motion of patients and healthy elderly subjects was measured by using the accelerometry technique. Assessment of the complexity of body motion was performed by maximum likelihood estimator (MLE) based fractal analysis methods. Our results suggest that the fractal dimensions of the body motion in poststroke hemiplegic patients at several Brunnstrom stages were higher than those of healthy elderly subjects. However, in the hemiplegic patients, the fractal dimensions were related to Brunnstrom stages.

Keywords

biomedical measurement; fractals; gait analysis; geriatrics; kinematics; maximum likelihood estimation; Brunnstrom stages; accelerometry technique; body motion; forceplates; fractal dyanmics; functional recovery monitoring; gait quantification; healthy elderly subjects; isolated joint movements; maximal spasticity; motor system recovery; nonsynergistic movements; optoelectronic systems; poststroke hemiplegic patients; rehabilitation process; synergistic movements; walking; Acceleration; Accelerometers; Fractals; Hospitals; Legged locomotion; Maximum likelihood estimation; Motion estimation; Motion measurement; Neural engineering; Senior citizens;

fLanguage

English

Publisher

ieee

Conference_Titel

Engineering in Medicine and Biology, 2002. 24th Annual Conference and the Annual Fall Meeting of the Biomedical Engineering Society EMBS/BMES Conference, 2002. Proceedings of the Second Joint

ISSN

1094-687X

Print_ISBN

0-7803-7612-9

Type

conf

DOI

10.1109/IEMBS.2002.1134336

Filename

1134336