The study will have two parts (A and B). Part A includes 60 persons with Multiple Sclerosis (pwMS) and 30 healthy controls. The study consists of 2 test sessions, separated by 5-7 days of interval. The sessions 1 and 2 will be composed of cognitive test battery, questionnaires to be filled, information about the use of actigraph, clinical outcomes and interlimb coordination tests.
In the Part B the investigators propose a pilot randomized controlled trial with dance therapy to improve fatigability in pwMS. The study includes 24 pwMS presenting walking fatigability. The participants will be randomly allocated by group (n=3-4), by a person independent from the research, into the intervention group (Dance Therapy) or the active control group (control exercise). Interventions take place in groups of 3 or 4 people with MS, twice a week for eight weeks, complementary to their usual care or conventional physiotherapy.