Effects of High-intensity Gait Training on Fatigue, Gait, and Neuroplasticity in People With Multiple Sclerosis

Participants will undergo 12 sessions (4 weeks, 3 sessions/week) of treadmill training. During each session, participants will walk for 40 min. with 5 min. of warmup and cooldown at 50% of maximal walking speed (tested each week) with 30 min. of training interposed. The type of training will be determined by the assigned treatment arm.