DocumentCode :
2734516
Title :
Passive derivation of basic walker-assisted gait characteristics from measured forces and moments
Author :
Alwan, M. ; Wasson, G. ; Sheth, P. ; Ledoux, A. ; Huang, C.
Author_Institution :
Med. Autom. Res. Center, Virginia Univ., Charlottesville, VA, USA
Volume :
1
fYear :
2004
fDate :
1-5 Sept. 2004
Firstpage :
2691
Lastpage :
2694
Abstract :
This work describes a method that passively assesses basic walker-assisted gait characteristic, including heel strikes, toe-off events, as well as stride time, double support and right & left single support phases using only force-moment measurements from the walker´s handles. The passively derived gait characteristics were validated against motion capture gait analysis and showed good correlations. This research is part of an effort that aims to identify user intent, from measuring forces and moments exerted on the handles of the walker as well as from perceiving the environment, and to incorporate identified intent into a passive shared steering control system for the walker. The primary focus of the work leading to This work is to identify the double support phase, and to engage the steering control at the beginning of this phase to maximize the user´s stability. However, the application of the method presented and the instrumented walker can be extended to longitudinal outside the lab Gait assessment.
Keywords :
force measurement; gait analysis; medical control systems; orthotics; double support phase; force-moment measurement; heel strikes; passive derivation; passive shared steering control system; stride time; toe-off events; walker handle; walker-assisted gait characteristic; Extremities; Force measurement; Instruments; Motion analysis; Phase detection; Phase measurement; Stability; Strain measurement; Testing; Time measurement; Detection of Gait Phases from handle forces and moments; Detection of Heel Strikes from handle forces and moments; Passive Assessment of Gait Characteristics; Walker-Assisted Gait;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Engineering in Medicine and Biology Society, 2004. IEMBS '04. 26th Annual International Conference of the IEEE
Conference_Location :
San Francisco, CA
Print_ISBN :
0-7803-8439-3
Type :
conf
DOI :
10.1109/IEMBS.2004.1403772
Filename :
1403772
Link To Document :
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