multiple sclerosis is a disease of the central nervous system (cns) that results in many symptoms including balance deficits, mobility limitations, spasticity and reduced quality of life (joy & johnston, 2001). however, little research exists on improving balance, mobility and spasticity through physical activity interventions in people with ms. the purpose of the present study was to determine the effects of a yoga intervention on postural control, spasticity, mobility, and quality of life in people with ms. a sample o f 12 people aged 30 to 76 (mean age o f 52 yrs.) with varying types of ms participated in a twice weekly 70 minute yoga intervention for 10 weeks. participants completed a spasticity questionnaire, the adapted timed get up and go (atgug), the rivermead mobility index (rmi), a postural control assessment, and the multiple sclerosis quality o f life inventory (ms-qli) at 3 assessments; pre, post, and 12 weeks after the intervention. after the 10-week program a social validation questionnaire was also completed. one way repeated measures anovas or friedman anovas by ranks indicated significant changes on the fatigue and vision scales of the ms-qli mfis and ivis between pre and post assessments. changes in atgug and rmi suggest that yoga may be a valuable alternative to traditional exercise programs for people with ms. many of the changes began to return to pre intervention values over the second 12-week period. future studies should employ a control group, larger sample sizes, and screen more carefully for initial functional status stratifications.