According to sample size calculation 37 diagnosed Multiple Sclerosis patients and 37 healthy individuals will be included.The demographic characteristics of the participants initially will be taken and Expanded Disability Status Scale score of those of MS will be recorded. Then, fatigue severity and perception, physical activity level, balance, peripheral muscle strength, functional mobility, functional exercise capacity will be evaluated. Primary outcomes are fatigue and physical activity level; secondary outcomes are balance, peripheral muscle strength, functional mobility, functional exercise capacity.