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Related Experiment Video

Updated: Nov 7, 2025

Home-Based Monitor for Gait and Activity Analysis
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Measuring Gait Velocity and Stride Length with an Ultrawide Bandwidth Local Positioning System and an Inertial

Pratham Singh1, Michael Esposito1, Zach Barrons2

  • 1Biomedical Engineering Graduate Program, Schulich School of Engineering, University of Calgary, Calgary, AB T2N 1N4, Canada.

Sensors (Basel, Switzerland)
|April 30, 2021
PubMed
Summary

Local positioning systems (LPS) with inertial measurement units (IMU) offer a valid method for measuring gait speed and stride length. This wearable technology shows strong correlation with gold-standard methods, improving gait analysis.

Keywords:
Bland–Altmangaitlocal positioning systemmotion analysis

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Area of Science:

  • Biomechanics
  • Wearable Technology
  • Gait Analysis

Background:

  • Accurate gait speed and stride length profiling is crucial for various applications.
  • Global Positioning System (GPS) wearables have limitations for precise gait measurement.
  • Local Positioning Systems (LPS) offer an alternative but may struggle with gait event detection.

Purpose of the Study:

  • To evaluate the validity of an ultrawide bandwidth Local Positioning System (LPS) integrated with an Inertial Measurement Unit (IMU) for measuring gait speed and stride length.
  • To compare the performance of the LPS-IMU system against a video motion capture gold standard.

Main Methods:

  • Ninety participants completed walking, running, and sprinting trials at self-selected speeds.
  • An ultrawide bandwidth LPS equipped with an IMU was used to collect location, speed, and acceleration data.
  • Data processing focused on speed in the final five meters and stride length in the last stride, compared to video motion capture.

Main Results:

  • The LPS-IMU system demonstrated small biases when compared to the gold standard.
  • Strong positive intraclass correlations (0.9-1.0) were observed between the LPS-IMU and video motion capture.
  • The system proved to be a valid method for determining gait speed and stride length.

Conclusions:

  • Local Positioning Systems (LPS) with integrated Inertial Measurement Units (IMU) provide a valid and reliable method for gait speed and stride length assessment.
  • Further research into data processing techniques can potentially reduce measurement variability and enhance accuracy.
  • This wearable technology offers a feasible alternative for gait analysis compared to traditional methods.