Freezing of gait is a debilitating feature of Parkinson disease. We studied whether a laser beam attached to a rolling walker and projected onto the floor would reduce freezing episodes. The participants with Parkinson disease performed a timed walking task twice: once with the laser beam and once without the laser beam. For each trial, we recorded the time and number of steps taken to complete the task and the number of freezing episodes. As a group, the participants did not perform the tasks better with the laser beam than they did without it.
Volume 50 Number 2, 2013
Pages 223 — 230
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Last Reviewed or Updated Tuesday, April 23, 2013 9:24 AM