Single group
Development and Reliability Evaluation of the Movement Rating Instrument for Virtual Reality Video Game Play
Levac D, Nawrotek J, Deschenes E, Giguere T, Serafin J, Bilodeau M & Sveistrup H
JMIR Serious Games 2016;4(1):e9URL: http://games.jmir.org/2016/1/e9/
doi:10.2196/games.5528
PMID:27251029
Objective: to "develop and evaluate the feasibility and reliability" of a measure for separating and quantifying the movements children make during VR therapy. The Movement Rating Instrument for Virtual Reality Video Game Play (MRI-VRGP) was applied to IREX and Kinect game systems.
Process: Movements were parsed into items and after several iterations, the selected items were trialled. Reviewers watched videotapes of subjects to rate upper extremity movements (unilateral or bilateral; close or far) and lower extremity movements within or without the base of support. They rated the activities as movements on a spectrum of easy to difficult and rated their confidence in making the rating.
Outcome: Within-rater reliability was higher (good) than inter-rater reliability (moderate). Finer movements were harder to rate consistently within therapists. Inter-rater reliability varied widely, and upper extremity fine (close) movements were rated less consistently.
More "item definition clarification and further psychometric property evaluation" will allow therapists to sort VR games by the type and frequency of their body movements.