Trunk Impairment Scale - Adaptation and Validation in French

Inclusion criteria (Phase 1): * Patients over 18 years of age * Patients who have had a stroke * Full understanding of the French language * No cognitive disorders * No prior exposure to the TIS scale * Covered by a social security system * Having been informed, having agreed to participate in the study, and having signed the free and informed consent form. Inclusion criteria (Phase 2): * Patients aged over 18 and under 85 years * Having had a stroke, with no time-since-onset limitation * Able to sit for 10 seconds without hand support * Able to provide informed consent * With an NIHSS score between 2 and 26 * Covered by a social security system * Having been informed, having agreed to participate in the study, and having signed the free and informed consent form Exclusion Criteria (Phase 1): * Insufficient command of the French language * Inability to understand instructions * Persons deprived of liberty (by judicial or administrative decision) * Adults under legal protection or unable to express their consent * Pregnant or breastfeeding women Exclusion Criteria (Phase 2): * Contraindication to the sitting position or to hip adduction (hip prosthesis) * History of orthopedic or neurological disorders affecting sitting balance * Insufficient command of the French language * Inability to understand instructions * Person deprived of liberty (by judicial or administrative decision) * Adult under legal protection or unable to express consent * Pregnant or breastfeeding woman