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Related Experiment Video

Updated: Nov 19, 2025

Comparative Analysis of Lower Limb Kinematics between the Initial and Terminal Phase of 5km Treadmill Running

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Published on: July 17, 2020

Treadmill-to-Overground Mapping of Marker Trajectory for Treadmill-Based Continuous Gait Analysis.

Woo Chang Jung¹, Jung Keun Lee¹

¹Inertial Motion Capture Lab, School of ICT, Robotics & Mechanical Engineering, Hankyong National University, 327 Jungang-ro, Anseong 17579, Gyeonggi, Korea.

Sensors (Basel, Switzerland)

|January 28, 2021

Summary

This study introduces a novel treadmill-to-overground mapping method for continuous gait analysis. The technique accurately converts treadmill walking data into overground motion trajectories without time normalization, improving gait research.

Keywords:

gait analysis optical motion capture system treadmill-to-overground mapping

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Area of Science:

Biomechanics
Motion Capture Technology
Gait Analysis

Background:

Traditional treadmill gait analysis relies on gait cycle percentages.
Continuous walking motion trajectories without time normalization are often needed.
Marker-based optical motion capture systems have limited workspace.

Discussion:

A virtual origin concept is proposed to map treadmill marker trajectories to overground equivalents.
This method enables direct observation of physical quantity changes during treadmill walking.
It facilitates the generation of overground-mapped gait data for validating other motion tracking systems.

Key Insights:

The proposed treadmill-to-overground mapping method achieves high accuracy.
Verified treadmill walking tests demonstrated an average total travel displacement error rate of 0.32%.
This technique allows for continuous, time-normalized gait analysis under simulated overground conditions.

Outlook:

Potential for enhanced accuracy in inertial-measurement-unit-based trajectory estimation.
Facilitates more realistic gait simulations and analyses in constrained laboratory environments.
Opens avenues for advanced research in human locomotion and rehabilitation studies.