Inertial sensing based assessment methods to quantify the effectiveness of post-stroke rehabilitation

Hsin Ta Li, Jheng Jie Huang, Chien Wen Pan, Heng I. Chi, Min Chun Pan

Research output: Contribution to journalArticlepeer-review

11 Scopus citations

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.

Original languageEnglish
Pages (from-to)16196-16209
Number of pages14
JournalSensors (Switzerland)
Volume15
Issue number7
DOIs
StatePublished - 6 Jul 2015

Keywords

  • Inertial measurement
  • Quantitative assessment scale
  • Stroke rehabilitation evaluation

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