 Pilates is becoming popular among the multiple sclerosis MS community as an alternative to the more traditional exercise programs. Although somewhat limited, previous research has suggested Pilates may have some beneficial effects in MS. This 12-week, single-blinded, randomized controlled study has one intervention group Pilates and massage therapy and one control group massage therapy only. The primary outcome of interest is the change in walking ability between groups. Secondary outcomes include other measures of physical performance and quality of life. 