Reliability and Validity Evaluation of the BePoW Device

Inclusion Criteria: * Over 18 years of age, * Having freely consented to participate in the study (or their legal representative in the case of guardianship, in agreement with the patient), * In the case of a guardianship, the legal representative having read the information document intended for the legal guardian of an adult under legal protection (under guardianship) and given his/her free and informed consent for the person for whom he/she is responsible to participate in the study (in agreement with the patient). * Temporarily or permanently wheelchair-bound, * Affiliated with a social security scheme or beneficiary of such a scheme. Exclusion Criteria: * Has comprehension problems that prevent him/her from giving free and informed consent and from completing the investigation (following instructions, answering questionnaires), * Suffering from a pathology (Huntington's disease, Sydenham's Chorea) preventing stable sitting posture during participation in the investigation, * Have undergone an amputation that prevents the BePoW device from taking measurements, * having undergone a tracheotomy preventing spirometry. * Pregnant, parturient or breast-feeding women, * Person deprived of liberty by a judicial decision (except guardianship or curatorship) or or administrative decision, a person under psychiatric care or admitted to a or social establishment for purposes other than research, * Minors, * Person in an emergency situation unable to give prior consent.