Effectiveness of Virtual Reality Gaming Therapy Versus CI Therapy for Upper Extremity Rehabilitation

Assesses the time to complete 15 standardized tasks (e.g., folding a towel, stacking checkers, placing hand on top of a box). Items that cannot be accomplished score 120 seconds. Times are natural log transformed to reflect proportional improvement (approximate % change) and correct for skew. On the log transformed scale, -.22 reflects normal ability, 4.79 = can't accomplish task. For improvement in mean log transformed performance time, -4.79 = best possible improvement, 0 = no improvement, positive scores = worsening. A proportional improvement of 16% (mean log transformed performance time change = -.17) is considered clinically meaningful.

Assessment evaluates the amount and quality of everyday arm use. The scale consists of 28 activities of daily living (e.g., washing hands, drinking from a cup). Participants self-report on an 11-point scale (0-5 with half-point increments, 0=not attempted to 5=attempted with normal movement). The total score on the measure reflects the mean of the individual item scores. A change of 1.0 on the scale is considered clinically meaningful.

Computerized adaptive assessment on several domains of quality of life: sleep, mobility, positive affect and well-being, fatigue, satisfaction with social roles, cognitive function, anxiety, and communication. Neuro-QOL uses a T score which has a mean of 50 and SD of 10, based on the norming sample used. All Neuro-QOL banks and scales are scored such that a higher score reflects more of what is being measured. Scores are reported as mean T-scores across the assessed domains. Positive changes indicate an improvement.

Devices to monitor upper extremity movement are worn throughout treatment. The devices count movements made with each arm, defined as an acceleration of 2g for at least 500 ms. The ratio of more affected to less affected arm use is then calculated for each treatment day. The best linear fit trajectory for each participant is calculated after removal of outliers. The treatment change reported here reflects the difference between the best-fit-line at post-treatment and the best-fit-line at pre-treatment. Positive change indicates improvement.

This measures was intended to measure proprioception in the upper extremity; however, performance on the measure is also known to be adversely affected by motor impairment. The experimenter guides individuals along movement trajectories between 2 and 9 inches with their vision obscured. They are then asked to reproduce the movement trajectories. The summed difference between the desired and produced trajectory endpoints in cm is reported. A negative change indicates an improvement.

Sensory evaluator of touch sensation. Units are the log transformed grams of pressure detected by the index finger of the paretic hand. Scores range from -1.8 to 5.7. Smaller scores indicate better sensation. Negative change indicates improvement.

Assessment to measure upper extremity distal motor function. The assessment measures the time to place 9 pegs into grooves on a board. Due to the inability of a majority of the participants to place all 9 pegs during the 120 seconds allotted for the test, performance was transformed into a rate metric to reduce floor effects. The outcome is expressed as change in the number of pegs per minute.

Assessment to measure cognitive function at baseline. The range of the MoCA assessment is 0-30. Scores below 24 indicate cognitive impairment and scores below 16 indicate severe cognitive impairment. The MoCA was administered for the purpose of characterizing the study population and was examined as a potential covariate in linear mixed effect models examining primary and secondary outcome measures.