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sEMG Based Gait Phase Recognition for Children with Spastic Cerebral Palsy

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Abstract

The goal of this study was to examine the optimal strategies for the recognition of gait phase based on surface electromyogram (sEMG) of leg muscles while children with cerebral palsy (CP) walked on a treadmill. Ten children with CP were recruited to participate in this study. sEMG from eight leg muscles and leg position signals were recorded while subjects walked on a treadmill. The position signals of left and right legs were used to develop a five gait sub-phases classifier, i.e., mid stance, terminal stance, pre-swing, mid swing, and terminal swing. Seven feature sets of sEMG signals were tested in recognizing the five gait sub-phases of children with CP. Results from this study indicated that the recognition performance of mean absolute value and zero crossing was better than that with other feature sets when using support vector machine (average classification accuracy was 89.40%). Further, we found that the performance of gait phase recognition is relatively better in pre-swing than other sub-phases, and the performance of gait phase recognition is relatively poorer in mid-swing than other sub-phases. Results from this study may be used to develop an intention-driven robotic gait training system/paradigm for assisting walking in children with CP through robotic training.

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Acknowledgments

This study was funded by NIDRR/RERC: H133E100007 and Postgraduate Scientific Research and Innovation Projects in Hainan Province [Grant Number Hys2017-128].

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Authors and Affiliations

  1. School of Mechanical and Electrical Engineering, The Hainan University, No. 58, People Avenue, Haikou, 570228, People’s Republic of China

    Peng-na Wei, Rongfu Xie, Rongnian Tang & Chuang Li

  2. Key Laboratory of Education Ministry for Modern Design & Rotor-Bearing System, Xi’an Jiaotong University, Xi’an, People’s Republic of China

    Peng-na Wei

  3. Sensory Motor Performance Program, Rehabilitation Institute of Chicago, Chicago, IL, USA

    Rongnian Tang, Janis Kim & Ming Wu

  4. Department of PM&R, Northwestern University Medical School, Chicago, IL, USA

    Rongnian Tang & Ming Wu

  5. Legs and Walking Lab, Shirley Ryan Abilitylab, 355 East Erie Street, Chicago, IL, 60611, USA

    Janis Kim & Ming Wu

Authors
  1. Peng-na Wei
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  2. Rongfu Xie
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  3. Rongnian Tang
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  4. Chuang Li
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  5. Janis Kim
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  6. Ming Wu
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Correspondence to Rongnian Tang.

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Associate Editor Xiaoxiang Zheng oversaw the review of this article.

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Wei, Pn., Xie, R., Tang, R. et al. sEMG Based Gait Phase Recognition for Children with Spastic Cerebral Palsy. Ann Biomed Eng 47, 223–230 (2019). https://doi.org/10.1007/s10439-018-02126-8

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  • DOI: https://doi.org/10.1007/s10439-018-02126-8

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