Article

OBJECTIVE: To assess interrater reliability of the Power Mobility Road Test
(PMRT) when administered through the Virtual Reality-based SIMulator-version 2
(VRSIM-2). DESIGN: Within-subjects repeated-measures design. SETTING:
Participants interacted with VRSIM-2 through 2 display options (desktop monitor
vs immersive virtual reality screens) using 2 control interfaces (roller system
vs conventional movement-sensing joystick), providing 4 different driving
scenarios (driving conditions 1-4). Participants performed 3 virtual driving
sessions for each of the 2 display screens and 1 session through a real-world
driving course (driving condition 5). The virtual PMRT was conducted in a
simulated indoor office space, and an equivalent course was charted in an open
space for the real-world assessment. After every change in driving condition,
participants completed a self-reported workload assessment questionnaire, the
Task Load Index, developed by the National Aeronautics and Space Administration.
PARTICIPANTS: A convenience sample of electric-powered wheelchair (EPW) athletes
(N=21) recruited at the 31st National Veterans Wheelchair Games. INTERVENTIONS:
Not applicable. MAIN OUTCOME MEASURES: Total composite PMRT score. RESULTS: The
PMRT had high interrater reliability (intraclass correlation coefficient
[ICC]>.75) between the 2 raters in all 5 driving conditions. Post hoc analyses
revealed that the reliability analyses had >80% power to detect high ICCs in
driving conditions 1 and 4. CONCLUSIONS: The PMRT has high interrater reliability
in conditions 1 and 4 and could be used to assess EPW driving performance
virtually in VRSIM-2. However, further psychometric assessment is necessary to
assess the feasibility of administering the PMRT using the different interfaces
of VRSIM-2.
CI - Copyright (c) 2016 American Congress of Rehabilitation Medicine. Published by
Elsevier Inc. All rights reserved.
- Réalité virtuelle

Langue : ANGLAIS