A Review of Flexible Strain Sensors for Walking Gait Monitoring

Article

Shi, Lei, Feng, Junping, Zhu, Yuting, Huang, Fei and Aw, Kean. 2024. "A Review of Flexible Strain Sensors for Walking Gait Monitoring." Sensors and Actuators A: Physical. 377. https://doi.org/10.1016/j.sna.2024.115730
Article Title

A Review of Flexible Strain Sensors for Walking Gait Monitoring

ERA Journal ID4508
Article CategoryArticle
AuthorsShi, Lei, Feng, Junping, Zhu, Yuting, Huang, Fei and Aw, Kean
Journal TitleSensors and Actuators A: Physical
Journal Citation377
Article Number115730
Number of Pages13
Year2024
PublisherElsevier
Place of PublicationNetherlands
ISSN0924-4247
1873-3069
Digital Object Identifier (DOI)https://doi.org/10.1016/j.sna.2024.115730
Web Address (URL)https://www.sciencedirect.com/science/article/pii/S0924424724007246
Abstract

This review examines the growing field of flexible and stretchable strain sensors utilized in human walking gait analysis, focusing on determining knee bending angle and muscle activities when a human subject walks. Recent advancements have enabled these sensors to accurately capture biomechanical parameters while accommodating the body's natural movements. We examine the principles underlying these sensors' design and fabrication techniques, emphasizing their flexibility, stretchability, and biocompatibility for seamless integration into wearable systems, suitable for capturing the movement of the lower limb aimed at walking gait analysis. Through critical evaluation of existing methodologies, we assess the reliability and validity of these sensors in quantifying gait parameters. Furthermore, we discuss this technology's clinical and research implications, highlighting its potential in personalized rehabilitation and sports performance optimization. We provide an overview of flexible strain sensors and their application for analyzing human walking gait, especially for observing walking gait in rehabilitation programs. First, we present the basic working principles of various flexible strain sensors. Second, by the application of flexible strain sensors as walking gait monitoring. Finally, current challenges and future opportunities in this research area are discussed. By synthesizing current knowledge and outlining future directions, this review aims to provide insights for researchers and practitioners seeking to leverage flexible and stretchable strain sensors for comprehensive human gait analysis.

KeywordsWalking gait; Muscle activity; Knee angle; Flexible strain sensors
Contains Sensitive ContentDoes not contain sensitive content
ANZSRC Field of Research 2020400302. Biomaterials
Byline AffiliationsUniversity of Auckland, New Zealand
Jiangsu University of Science and Technology, China
School of Engineering
Donghua University, China
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