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

被引：6

作者：

Hsu, Wei-Chun ^{[1
,2
,3
]}

Sugiarto, Tommy ^{[1
,2
,4
]}

Liao, Ying-Yi ^{[5
]}

Lin, Yi-Jia ^{[1
]}

Yang, Fu-Chi ^{[6
]}

Hueng, Dueng-Yuan ^{[7
]}

Sun, Chi-Tien ^{[4
]}

Chou, Kuan-Nien ^{[7
]}

机构：

[1] Natl Taiwan Univ Sci & Technol, Grad Inst Biomed Engn, Taipei 10607, Taiwan

[2] Natl Taiwan Univ Sci & Technol, Grad Inst Appl Sci & Technol, Taipei 10607, Taiwan

[3] Natl Def Med Ctr, Taipei 11490, Taiwan

[4] Ind Technol Res Inst, Syst Integrat & Applicat Dept, Informat & Commun Res Lab, Hsinchu 31057, Taiwan

[5] Natl Taipei Univ Nursing & Hlth Sci, Dept Gerontol Hlth Care, Taipei 112, Taiwan

[6] Triserv Gen Hosp, Natl Def Med Ctr, Dept Neurol, Taipei 11490, Taiwan

[7] Triserv Gen Hosp, Natl Def Med Ctr, Dept Neurol Surg, Taipei 11490, Taiwan

来源：

APPLIED SCIENCES-BASEL | 2021年 / 11卷 / 04期

关键词：

clinical gait analysis; gait classification; feature selection; Support Vector Machine; stroke gait; wearable sensor; PARKINSONS-DISEASE; CLASSIFICATION; POSTSTROKE; SELECTION;

D O I：

10.3390/app11041541

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

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.

引用

页码：1 / 14

页数：14