Victims of Parkinson's disease carry an elevated risk of falls with injury since they have trouble walking and talking, a new Florida State University study has revealed.
The study found that older adults with Parkinson's disease altered their gait - stride length, step velocity and the time they spent stabilizing on two feet - when asked to perform increasingly difficult verbal tasks while walking.
But the real surprise was that even older adults without a neurological impairment demonstrated similar difficulties walking and talking.
Francis Eppes Professor of Communication Science and Disorders Leonard L. LaPointe and co-authors Julie A.G. Stierwalt, associate professor in the School of Communication Science and Disorders, and Charles G. Maitland, professor of neurology in the College of Medicine, were part of the study.
"These results suggest that it might be prudent for health care professionals and caregivers to alter expectations and monitor cognitive-linguistic demands placed on these individuals while they are walking, particularly during increased risk situations such as descending stairs, in low-light conditions or avoiding obstructions," LaPointe said.
In other words, don't ask an elderly person or someone with Parkinson's to give directions or provide a thoughtful response to a complicated question while walking.
"One of the most common dual tasks performed is talking while walking," the researchers wrote. "In isolation, neither talking nor walking would be considered difficult to perform, yet when coupled, the relative ease of each task may change."
The study will be published in the October issue of the International Journal of Speech-Language Pathology.