Gait Analysis Parameter and Upper Limb Evaluation in Adult Patients With Neurological or Metabolic Pathology

Inclusion Criteria: * Ambulant patients (i.e. able to walk 10 meters without assistance) * Confirmed diagnosis by the investigator based on current gold standard in his/her disease (genetic testing, clinical criteria, etc.) * Myotonic dystrophy type 1 (DM1) and Charcot-Marie-Tooth (CMT) patients should present sensitive of motor signs on physical examination. * Myasthenic patients should be seropositive, and Myasthenia Gravis Foundation of America (MGFA) class II to IV. * Patient with morbid obesity (Body Mass Index\> or = 35 at inclusion visit). * Signed informed consent form by patient him/herself and patient willing and able to comply with all study procedures. Exclusion Criteria: * Non-ambulant patients * Patients with extreme cognitive disorders that limit their understanding of the exercises to be performed * Patients who have undergone a surgical procedure or who have experienced recent trauma (within fewer than 6 months) affecting the upper or lower limbs * A concomitant chronic or acute neurological, endocrine, infectious, allergic, or inflammatory pathology within the 3-week period immediately prior to inclusion * Patients who are participating in an interventional clinical trial * Pregnant or breastfeeding women