Estimation of spatial-temporal gait parameters in level walking based on a single accelerometer: Validation on normal subjects by standard gait analysis

F. Bugané, M. G. Benedetti, G. Casadio, S. Attala, F. Biagi, M. Manca, A. Leardini

Research output: Contribution to journalArticle

Abstract

This paper investigates the ability of a single wireless inertial sensing device stuck on the lower trunk to provide spatial-temporal parameters during level walking. The 3-axial acceleration signals were filtered and the timing of the main gait events identified. Twenty-two healthy subjects were analyzed with this system for validation, and the estimated parameters were compared with those obtained with state-of-the-art gait analysis, i.e. stereophotogrammetry and dynamometry. For each side, from four to six gait cycles were measured with the device, of which two were validated by gait analysis. The new acquisition system is easy to use and does not interfere with regular walking. No statistically significant differences were found between the acceleration-based measurements and the corresponding ones from gait analysis for most of the spatial-temporal parameters, i.e. stride length, stride duration, cadence and speed, etc.; significant differences were found for the gait cycle phases, i.e. single and double support duration, etc. The system therefore shows promise also for a future routine clinical use.

Original languageEnglish
Pages (from-to)129-137
Number of pages9
JournalComputer Methods and Programs in Biomedicine
Volume108
Issue number1
DOIs
Publication statusPublished - Oct 2012

Keywords

  • Inertial sensing
  • Lower trunk acceleration
  • Validation
  • Walking

ASJC Scopus subject areas

  • Computer Science Applications
  • Software
  • Health Informatics

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