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Related Experiment Video

Updated: Aug 30, 2025

Clinical-oriented Three-dimensional Gait Analysis Method for Evaluating Gait Disorder
06:54

Clinical-oriented Three-dimensional Gait Analysis Method for Evaluating Gait Disorder

Published on: March 4, 2018

14.2K

The reliability and validity of gait analysis system using 3D markerless pose estimation algorithms.

Shengyun Liang1,2,3, Yu Zhang1,2,3, Yanan Diao1,2,3

  • 1CAS Key Laboratory of Human-Machine Intelligence-Synergy Systems, Research Center for Neural Engineering, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen, China.

Frontiers in Bioengineering and Biotechnology
|August 29, 2022
PubMed
Summary

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This summary is machine-generated.

This study developed a 3D markerless pose estimation system for quantifying elderly gait. The system accurately assesses gait parameters, enabling feasible outdoor health monitoring and early detection of health issues.

Area of Science:

  • Biomechanics
  • Medical Technology
  • Gerontology

Background:

  • Quantifying kinematic gait in elderly individuals is crucial for health assessment.
  • Traditional laboratory-based gait analysis using optical sensors and markers can be time-consuming and delay health problem detection.

Purpose of the Study:

  • To develop and validate a 3D markerless pose estimation system for quantitative gait analysis in the elderly.
  • To assess the reliability and validity of the markerless system compared to marker-based methods.

Main Methods:

  • Developed a 3D markerless pose estimation system utilizing OpenPose and 3DPoseNet algorithms.
  • Collected gait data from 30 elderly participants performing a walking task.
  • Employed sample entropy to analyze gait parameter irregularity and used paired-sample t-tests, intra-class correlation coefficients (ICC), and Bland-Altman analysis for validation and reliability assessment.
Keywords:
3D marker-based motion analysis3D markerless pose estimatesreliabilitysingle-camera videovalidity

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Last Updated: Aug 30, 2025

Clinical-oriented Three-dimensional Gait Analysis Method for Evaluating Gait Disorder
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Published on: March 4, 2018

14.2K
3D Kinematic Gait Analysis for Preclinical Studies in Rodents
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Published on: August 3, 2019

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Comprehensive Understanding of Inactivity-Induced Gait Alteration in Rodents

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Main Results:

  • The markerless system demonstrated substantial validity (ICC (A, 1)) and almost complete test-retest reliability (ICC (C, 1)).
  • No significant differences were found in sample entropy of knee and sagittal plane joint angles between markerless and marker-based systems (p > 0.05).
  • Bland-Altman analysis supported the agreement between markerless and marker-based joint angle measurements.

Conclusions:

  • The developed 3D markerless pose estimation system provides a reliable and valid quantitative assessment of elderly gait.
  • This technology facilitates feasible outdoor gait analysis, potentially enabling earlier detection of health issues and improving elderly care.