Video games can help stroke survivors, study finds
Friday, May 13, 2005
Jamie Stengle
Associated Press
Dallas- Maybe playing video games isn't just for kids.
When stroke victims played virtual-reality games in which they imagined they were diving with sharks or snowboarding down a narrow slope, their ability to walk eventually improved, researchers reported in a small study.
Doctors called the findings promising, especially since the patients all had strokes more than a year earlier, a time frame when further recovery is unlikely.
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"People love to play games," said Dr. Mark Hallett, a co-author of the study, and the virtual-reality therapy helped the patients use their weakened legs and ultimately walk better. Hallett is chief of the human motor control section with the National Institute of Neurological Disorders and Stroke.
While the study size was small and the volunteers relatively young - 10 stroke victims with an average age of 57 - the researchers believe video games may be a good way to keep patients engaged in therapy.
About 700,000 people each year experience a new or recurrent stroke, which often impairs one side of the body and walking ability.
The patients in the study, which appeared in Thursday's issue of the journal Stroke, all had weakness on one side of their body.
Researchers randomly assigned them to a control group or a virtual-reality group. The control group got no intervention, while the virtual-reality group used the video training for an hour a day, five days a week for more than a month.
Three games in which the patient's body is superimposed into the scene were used to build a range of motion, balance, mobility, stepping and walking skills. One game simulated going up and down stairs, another let the patient go deep-sea diving with sharks and the third re-created snowboarding by simulating gliding down a narrow slope, jumping and avoiding obstacles.
The five patients who played the games improved in walking, standing and climbing steps, researchers said.
Also, brain imaging done before and after the experiment indicated a reorganization of brain function after the therapy, said the lead author of the study.
