期刊
SENSORS
卷 21, 期 8, 页码 -出版社
MDPI
DOI: 10.3390/s21082727
关键词
wearable sensor; real-time gait detection; gait analysis; insole pressure sensors; inertial measurement unit; pathological gait; gait rehabilitation; assistive device
资金
- European Union [779963]
Traditionally, gait analysis has been conducted in a laboratory setting using expensive equipment, but recently wearable sensors have made real-time gait analysis possible in clinical applications and daily living. Wearable sensors, such as inertial measurement units, have been widely used for gait analysis, with the most common techniques being rule-based methods relying on threshold or peak detection. Despite the potential for applications in pathological gait, the validation of proposed methods on such data remains limited.
Gait analysis has traditionally been carried out in a laboratory environment using expensive equipment, but, recently, reliable, affordable, and wearable sensors have enabled integration into clinical applications as well as use during activities of daily living. Real-time gait analysis is key to the development of gait rehabilitation techniques and assistive devices such as neuroprostheses. This article presents a systematic review of wearable sensors and techniques used in real-time gait analysis, and their application to pathological gait. From four major scientific databases, we identified 1262 articles of which 113 were analyzed in full-text. We found that heel strike and toe off are the most sought-after gait events. Inertial measurement units (IMU) are the most widely used wearable sensors and the shank and foot are the preferred placements. Insole pressure sensors are the most common sensors for ground-truth validation for IMU-based gait detection. Rule-based techniques relying on threshold or peak detection are the most widely used gait detection method. The heterogeneity of evaluation criteria prevented quantitative performance comparison of all methods. Although most studies predicted that the proposed methods would work on pathological gait, less than one third were validated on such data. Clinical applications of gait detection algorithms were considered, and we recommend a combination of IMU and rule-based methods as an optimal solution.
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