Cognitive and Physical Effects of Exercise or Exercise With Enrichment on People With TBI

Traumatic brain injury (TBI) results in long-lasting physical and cognitive deficits. The purpose of this study is to determine whether exercise or exercise with enrichment is beneficial in individuals who previously had a head injury. The environmental enrichment will consist of a cultural educational program that will include ethnic food, music, slides and a talk on 8 different cultures. Individuals will be evaluated using neuropsychological and physical tests before and after the intervention. Testing will consist of Repeatable Battery for the Assessment of Neuropsychological Status (RBANS), Trailmaking Test (TMT), Immediate Post-Concussion Assessment and Cognitive Testing (ImPACT), Quality of Life in Brain Injury Questionnaire (QOLIBRI), 10 meter walk, and the NIH Toolbox Standing Balance Test. Initial testing will include the Disability Rating Scale to help balance groups (after random assignment) in terms of baseline ability.

In rodents, exercise or an enriched environment after TBI improve cognitive function and motor function and the combination results in even greater improvement. The mechanism of cognitive improvement from exercise or environmental enrichment relates to increases in brain derived neurotrophic factor and neurogenesis in the hippocampus. An additional possible mechanism of the positive effects of exercise or enrichment is a reduction in inflammation. Our hypothesis is that exercise or exercise with enrichment will result in better motor performance and improved cognitive ability.