Related Experiment Video
Updated: Jun 27, 2025
07:24
Home-Based Monitor for Gait and Activity Analysis
Published on: August 8, 2019
6.7K
The Analytical Validity of Stride Detection and Gait Parameters Reconstruction Using the Ankle-Mounted Inertial
Mona Michaud1,2, Alexandre Guérin1,3,4, Marguerite Dejean de La Bâtie1
1Sysnav, 27200 Vernon, France.
Sensors (Basel, Switzerland)
|April 27, 2024
Summary
The Syde® wearable device accurately records gait using inertial measurement units (IMU). This technology shows a low error for stride length and velocity, validating its use in clinical research.
Area of Science:
- Biomedical Engineering
- Biomechanics
- Wearable Technology
Background:
- Inertial measurement units (IMUs) are increasingly utilized in biomedical sciences.
- Wearable devices offer potential for remote and continuous physiological monitoring.
Purpose of the Study:
- To validate the accuracy of the IMU-based Syde® wearable device for gait analysis.
- To compare Syde® device gait recordings against a gold-standard motion capture system.
Main Methods:
- Twelve healthy subjects participated in a controlled gait data collection.
- The Syde® device was worn on each ankle alongside a motion capture system.
- 2820 strides were analyzed for accuracy assessment.
Main Results:
- Median absolute stride length error was 1.86 cm (75th percentile: 3.24 cm).
- Median absolute stride horizontal velocity error was 1.56 cm/s (75th percentile: 2.63 cm/s).
- Measurement error to the reference system was consistently below 3 cm.
Conclusions:
- The Syde® IMU-based wearable device demonstrates valid physical recovery of stride length and horizontal velocity.
- The device is suitable for day-long and remote continuous gait recording in clinical research.
