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The classification of minor gait alterations using wearable sensors and deep learning

Turner, Alexander; Hayes, Stephen

Authors

Stephen Hayes

Abstract

Objective: This paper describes how non-invasive wearable sensors can be used in combination with deep learn- ing to classify artificially induced gait alterations without the requirement for a medical professional or gait analyst to be present. This approach is motivated by the goal of diagnosing gait abnormalities on a symptom by symptom basis, irrespective of other neuromuscular movement disorders patients may be affected by. This could lead to improvements in treatment and offer a greater insight into movement disorders. Methods: In-shoe pressure was measured for 12 able-bodied participants, each subject to 8 artificially induced gait alterations, achieved by modifying the underside of the shoe. The data were recorded at 100 Hz over 2520 data channels and was analysed using the deep learning architecture, long term short term memory networks. Additionally, the rationale for the decision-making process of these networks was investigated. Conclusion: Long term short term memory networks are applicable to the classification of gait function. The classifications can be made using only 2 seconds of sparse data (82.0% accuracy over 96,000 instances of test data) from participants who were not part of the training set. Significance: This work provides potential for gait function to be accurately classified using non-invasive techniques, and at more regular intervals, outside of a clinical setting without the need for healthcare professionals to be present.

Journal Article Type Article
Publication Date 2019
Journal IEEE Transactions on Biomedical Engineering
Print ISSN 0018-9294
Publisher Institute of Electrical and Electronics Engineers
Peer Reviewed Peer Reviewed
Institution Citation Turner, A., & Hayes, S. (2019). The classification of minor gait alterations using wearable sensors and deep learning. IEEE transactions on bio-medical engineering / Bio-medical Engineering Group, https://doi.org/10.1109/TBME.2019.2900863
DOI https://doi.org/10.1109/TBME.2019.2900863
Keywords Deep learning; Footwear; Sensors; Foot; Legged locomotion; Parkinson's Disease; Feature extraction

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