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Technical Brief

Agreement between the spatiotemporal gait parameters of healthy adults from the OptoGait system and a traditional three-dimensional motion capture system.

[+] Author and Article Information
Aoife Healy

School of Life Sciences and Education, Staffordshire University, Science Centre, Staffordshire University, Stoke On Trent, ST4 2DF, UK
a.healy@staffs.ac.uk

Kimberley Linyard-Tough

School of Life Sciences and Education, Staffordshire University, Science Centre, Staffordshire University, Stoke On Trent, ST4 2DF, UK
kimberleymlt90@hotmail.co.uk

Nachiappan Chockalingam

School of Life Sciences and Education, Staffordshire University, Science Centre, Staffordshire University, Stoke On Trent, ST4 2DF, UK
n.chockalingam@staffs.ac.uk

1Corresponding author.

ASME doi:10.1115/1.4041619 History: Received February 06, 2018; Revised September 26, 2018

Abstract

While previous research has assessed the validity of the OptoGait system to the GAITRite walkway and an instrumented treadmill, no research to date has assessed this system against a traditional three-dimensional motion analysis system. Additionally, previous research has shown that the OptoGait system shows systematic bias when compared to other systems due to the configuration of the system's hardware. The present study examined the agreement between the spatiotemporal gait parameters calculated from the OptoGait system and a three-dimensional motion capture (14 camera Vicon motion capture system and 2 AMTI force plates) in healthy adults. Additionally, a range of filter settings for the OptoGait were examined to determine if it was possible to eliminate any systematic bias between the OptoGait and the three-dimensional motion analysis system. Agreement between the systems was examined using 95% limits of agreement by Bland and Altman and the intraclass correlation coefficient. A repeated measures ANOVA were used to detect any systematic differences between the systems. Findings confirm the validity of the OptoGait system for the evaluation of spatiotemporal gait parameters in healthy adults. Furthermore, recommendations on filter settings which eliminate the systematic bias between the OptoGait and the three-dimensional motion analysis system are provided.

Copyright (c) 2018 by ASME
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