A total target sample size of 40 adults with MS and 40 adults without MS will be recruited. The 40 adults without MS will undergo the two baseline testing sessions only for the first phase of the study. 20 of those individuals with MS will be randomly selected to undergo the intervention phase of the study.
The research design will include two groups, the intervention and control group. Both groups will undergo a screening process, two baseline testing sessions, and be randomly assigned to one of the two groups. The duration of the study is 6 weeks in length for a total of 18 training sessions. The intervention group participants will undergo gait training with a specific concomitant cognitive task (dual-task) for a total walking time of 20 minutes and with rest breaks the total session time is \~60 minutes with a physical therapist. The control group will undergo gait training, but without the cognitive task. Feedback from the therapist will be provided to each participant concerning gait mechanics and ways to improve gait regardless of group membership.
Outcome measures data will be collected twice at baseline, once at mid-intervention, once at post-intervention, and once at one-month follow-up.
