Article

The purpose of this study was to investigate the clinical potential of an
augmented-video-based-portable-system (AVPS). The AVPS included a walkway grid
mat made of vinyl flooring, flat paper bull's eye markers, four photoswitches
mounted on tripods, a light-indicator, a video camera, and a computer with
ProTrainer System software. The AVPS output was compared to a "gold standard" 3D
Vicon Motion Analysis System both statically and dynamically over a fixed range
(-90 degrees to +90 degrees ) using a two-segment-goniometric-rig marked with
both bull's eye and retroreflective markers. At each segment angle position,
three trials of data were captured. The reliability of the AVPS was also tested
using three raters. Further twelve, young, healthy subjects participated in a
concurrent validity study in which they performed six gait trials which were
simultaneously recorded by both systems. Both motion analysis systems showed low
levels of intra subject variability in all kinematic variables indicated by the
size of the standard deviations across the six trials. There were no significant
differences between the motion systems with respect to the kinematic variables
(P>0.05). The results showed a high intra- and inter-rater reliability for both
the kinematic and temporo-spatial parameters. With respect to gait events the
lowest ICC value for the intra-rater reliability test was 0.993 for the kinematic
variables, and ranged from 0.941 to 0.956 for the temporo-spatial variables and
0.731 to 0.954 for the tibia inclination angles. The validation data suggest the
AVPS is capable of generating highly reliable and repeatable data when applied to
normal subjects and could be used within the clinical setting.
CI - Copyright (c) 2013 Elsevier B.V. All rights reserved.

Langue : ANGLAIS