Intra- and Inter- Rater Reliability Measurements of Kinematic and Temporo-Spatial Parameters of Gait Using a Simple Video Technique
U. Chris Ugbolue*, Enrica Papi, Andrew Kerr, Leo Earl, Valerie M. Pomeroy and Philip J. Rowe
Department of Bioengineering, University of Strathclyde, Wolfson Building, 106 Rottenrow, Glasgow, G4 0NW, UK
- *Corresponding Author:
- Ukadike C Ugbolue
Bioengineering Unit, University of Strathclyde
Wolfson Building, 106 Rottenrow
Glasgow, G4 0NW, UK
E-mail: [email protected]
Received Date: November 12, 2011; Accepted Date: November 18, 2011; Published Date: November 19, 2011
Citation: Ugbolue UC, Papi E, Kerr A, Earl L, Pomeroy VM, et al. (2011) Intra and Inter- Rater Reliability Measurements of Kinematic and Temporo-Spatial Parameters of Gait Using a Simple Video Technique. J Bioeng Biomed Sci S1:003. doi:10.4172/2155-9538.S1-003
Copyright: © 2011 Ugbolue UC, et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
A simple and cost effective technique of video gait analysis applicable within rehabilitation clinics and clinical gait laboratories has been developed. The purpose of this study was to determine intra- and inter- rater reliability of kinematic and temporo-spatial gait parameters measured using the commercially available ProTrainer system (Sports Motion Inc®, Cardiff, CA) software, a printed vinyl walk mat and a video camera. Twelve healthy adults, four stroke patients and three raters participated in the study. The experimental setup comprised the walk mat, paper ‘bulls-eye’ markers, four photoswitches mounted on tripods, a light indicator, video camera, and a computer with the software. Participants performed three gait trials each up and down the walk mat. Three raters evaluated the results using the ProTrainer system (Sports Motion Inc®, Cardiff, CA) software. Values were extracted for kinematic and temporo- spatial gait measurements. Data were analysed using Intraclass Correlation Coefficient (ICC) for intra-rater reliability to calculate ICC values with 95% Confidence Intervals. Cronbach’s coefficient alpha was used to quantify the intra-rater reliability. The ICC values for both intra and inter-rater reliability ranged between 0.731 and 1.000. The results suggest this gait measurement technique is simple, reliable, effective and easy to implement as a gait outcome measuring system.