Abstract of Dissertation Presented to the Graduate School of the University of Florida in Partial Fulfillment of the Requirements for the Degree of Doctor of Philosophy IMPACT OF POST-STROKE MOBILITY ON ACTIVITY AND PARTICIPATION By Arlene Ann Schmid August 2005 Chair: Pamela W. Duncan Major Department: Rehabilitation Science Post-stroke individuals often experience residual mobility impairments, reflected in decreased gait speed, increased falls, and the possible development of fear of falling. This research utilized two secondary analyses to explore the impact of post-stroke gait velocity and fear of falling on activity and participation. The first study examined clinically meaningful changes in gait velocity in 64 post- stroke individuals. Velocity was measured at baseline and three months and was placed into a three tier ambulation classification. T-tests determined a difference in functional ability (activities of daily living (ADLs), instrumental activities of daily living (IADLs), mobility, and social participation) between those who did and did not successfully advance to the next ambulation classification. After stratifying by baseline gait velocity and controlling for age, those most severely impaired at baseline, and who advanced classifications, demonstrated significant differences in all measured functional abilities. In comparison, those moderately impaired only demonstrated significant differences in