Evaluation of a Manual Wheelchair Interface to Computer Games

Abstract

The sedentary lifestyle of many people with spinal cord injury (SCI) has lead to cardiovascular diseases being a major health concern. A suitable exercise program may help improve the SCI individual's cardiovascular fitness level. GAME^Wheels is an in terface between a custom wheelchair roller system and a computer that enables an individual to control computer video games by driving his or her wheelchair. The purpose of Phase 1 was to evaluate the design of the GAME^whc _cl ^s system and to determine the type of computer video game that is likely to motivate wheelchair users to exercise. Phase 2 included physiologic testing of wheelchair users and the GAME^Wheels system to investigate whether the system elicits an exercise training re sponse. Thirty-five subjects were recruited to evaluate the GAME^Wheels by playing three commercial computer games (Phase 1) and to identify the computer game that they would prefer to use when exercising. The feedback from Phase 1 was used with test subjects to verify that the GAME^Wheels system elicits an exercise training effect (Phase 2). Phase 2 included 10 subjects using the GAME^Wheels system to play Need for Speed II. During game play, physiologic data were collected and the subjects' oxy gen consumption and heart rate were analyzed. Analysis showed that the GAME^Wheels system induced nine subjects to reach their training zone, defined as 50% and 60% of their maximum oxygen consumption and heart rate, respectively. This study demon strates that the GAME^Wheels system elicits an exercise training response. Keywords: Wheelchair—Exercise—Computer games—Fitness—Design.

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