journal article·2021-02-08Open access

Can Trunk Acceleration Differentiate Stroke Patient Gait Patterns Using Time- and Frequency-Domain Features?

Wei-Chun Hsu, Tommy Sugiarto, Ying-Yi Liao, Yi-Jia Lin, Fu-Chi Yang, Dueng-Yuan Hueng, Chi-Tien Sun, Kuan-Nien Chou

Applied Sciences· Volume 11· Issue 4

Abstract

This study classified the gait patterns of normal and stroke participants by using time- and frequency-domain features obtained from data provided by an inertial measurement unit sensor placed on the subject’s lower back (L5). Twenty-three participants were included and divided into two groups: healthy group (young and older adults) and stroke group. Time- and frequency-domain features from an accelerometer were extracted, and a feature selection method comprising statistical analysis and signal-to-noise ratio (SNR) calculation was used to reduce the number of features. The features were then used to train four Support Vector Machine (SVM) kernels, and the results were subsequently compared. The quadratic SVM kernel had the highest accuracy (93.46%), as evaluated through cross-validation. Moreover, when different datasets were used on model testing, both the quadratic and cubic kernels showed the highest accuracy (96.55%). These results demonstrated the effectiveness of this study’s classification method in distinguishing between normal and stroke gait patterns, with only using a single sensor placed on the L5.
Source: crossref · Quality: baseline

Research context

OpenAlex topics: Gait Recognition and Analysis · Balance, Gait, and Falls Prevention · Diabetic Foot Ulcer Assessment and Management

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Graduate Institute of Biomedical Engineering, National Taiwan University of Science and Technology, Taipei 10607, Taiwan

Graduate Institute of Applied Science and Technology, National Taiwan University of Science and Technology, Taipei 10607, Taiwan

National Defense Medical Center, Taipei 11490, Taiwan

System Integration and Application Department, Information and Communication Research Laboratory, Industrial Technology Research Institute, Hsinchu 31057, Taiwan

Department of Gerontological Health Care, National Taipei University of Nursing and Health Sciences, Taipei 112, Taiwan

Department of Neurology, Tri-Service General Hospital, National Defense Medical Center, Taipei 11490, Taiwan

Department of Neurological Surgery, Tri-Service General Hospital, National Defense Medical Center, Taipei 11490, Taiwan

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