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Sensors 2015, 15(7), 16196-16209; doi:10.3390/s150716196

Inertial Sensing Based Assessment Methods to Quantify the Effectiveness of Post-Stroke Rehabilitation

1
Graduate Institute of Biomedical Engineering, National Central University, Jhongli 320, Taiwan
2
Hsinchu Air Base, Hsinchu City 300, Taiwan
3
Department of Mechanical Engineering, National Central University, Jhongli 320, Taiwan
*
Author to whom correspondence should be addressed.
Academic Editor: Gert F. Trommer
Received: 27 April 2015 / Revised: 19 June 2015 / Accepted: 30 June 2015 / Published: 6 July 2015
(This article belongs to the Special Issue Inertial Sensors and Systems)
View Full-Text   |   Download PDF [1041 KB, uploaded 6 July 2015]   |  

Abstract

In clinical settings, traditional stroke rehabilitation evaluation methods are subjectively scored by occupational therapists, and the assessment results vary individually. To address this issue, this study aims to develop a stroke rehabilitation assessment system by using inertial measurement units. The inertial signals from the upper extremities were acquired, from which three quantitative indicators were extracted to reflect rehabilitation performance during stroke patients’ movement examination, i.e., shoulder flexion. Both healthy adults and stroke patients were recruited to correlate the proposed quantitative evaluation indices and traditional rehab assessment scales. Especially, as a unique feature of the study the weight for each of three evaluation indicators was estimated by the least squares method. The quantitative results demonstrate the proposed method accurately reflects patients’ recovery from pre-rehabilitation, and confirm the feasibility of applying inertial signals to evaluate rehab performance through feature extraction. The implemented assessment scheme appears to have the potential to overcome some shortcomings of traditional assessment methods and indicates rehab performance correctly. View Full-Text
Keywords: inertial measurement; stroke rehabilitation evaluation; quantitative assessment scale inertial measurement; stroke rehabilitation evaluation; quantitative assessment scale
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Li, H.-T.; Huang, J.-J.; Pan, C.-W.; Chi, H.-I.; Pan, M.-C. Inertial Sensing Based Assessment Methods to Quantify the Effectiveness of Post-Stroke Rehabilitation. Sensors 2015, 15, 16196-16209.

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