Assessment of a Portable Digital Device for Quantified Analysis of Markerless Walking in Volunteers With Neuromuscular Diseases or Asymptomatic Volunteers

* All volunteers - Age between 18 and 65 - Ambulatory - willing to sign a consent form to participate in the study - Member of or beneficiary of a social security system - Volunteers with a neuromuscular disease - Confirmed diagnosis of a neuromuscular disease of genetic origin (medical document to be provided upon enrollment in the study with proof of diagnosis) belonging to the list above. - Ability to walk for 2 minutes without assistance. - Ability to stand up from a chair with armrests at least 3 times in 30 seconds. - Ability to climb an inclined plane independently or with assistance to access the movement analysis room. Exclusion Criteria - All volunteers - Individuals under guardianship, curatorship, or legal protection - Pregnant or breastfeeding women - Non-ambulatory individuals - Individuals with epilepsy - Skin conditions preventing the placement of VICON motion sensors - Asymptomatic volunteers - Unstable respiratory or cardiac problems - Neurological, musculoskeletal, or psychiatric problems - Volunteers with a neuromuscular disease - Recent trauma or serious falls (≤ 6 months) - Individuals who have fallen more than twice in the past year and at least once in the past three months - Use of assistive devices such as rigid knee braces or walkers - Unstable cardiomyopathy - Individuals awaiting diagnosis Exclusion criteria - Inability to comply with the protocol requirements - Medical or social conditions that could interfere with the study, as determined by the coordinating investigator or co-investigators. Always talk to your doctor about whether this trial is right for you.