The research will begin with an inclusive visit by a medical doctor. Evaluation begins with a impedancemetric measurement, followed by posturographic evaluation. Then, in a first phase, patients will perform walk tests (e.g., 6 minutes, 10 m) during which spatiotemporal parameters of gait cycle, and the electromyographic activity of the different muscles of the lower limbs will be quantified. After the walk test, each subject will receive an evaluation of the strength of the ankle and knee muscles by an isokinetic dynamometer. During these contractions, the surface electromyographic activity of patients will also be recorded. In a second phase, subjects will perform a series of repetitions at 50% of maximum voluntary contraction (MVC) on the isokinetic dynamometer, to measure strength endurance. Thirdly, participants will be asked to complete cognitive tests and psychometric questionnaires. Finally, a personalized care will be offered in terms of adapted physical activity. The evaluation protocol will be performed again to measure the impact of physical activity three months after the first assessment.