Patients
psoriatic, cardio-vascular disease, juvenile arthritis, polyarticular
RECRUITMENT, JUVENILE ARTHRITIS
All patients aged between 6 and 17 years old, followed at the University Hospital of Besançon and the North Franche-Comté Hospital, for juvenile arthritis of the oligoarticular, polyarticular, psoriatic or enthesitis-related type, ongoing for more than one year, will be screened for potential eligibility. Patients with steady conventional or biologic treatment and who do not have any contraindication to physical activity (i.e. cardio-vascular disease, intra-articular injection in the previous month, peripheral joint with significant or advanced structural damage) will be eligible for recruitment. Potential candidates and their parents will be clearly informed about the study, and the children or adolescents will participate only after at least one of the parents provides consent. During the 3 months of APA sessions, included patients requiring an intra-articular injection or presenting physical inability to participate in the physical activity (e.g. due to injury), will be excluded. Patient inclusions will begin in the second half of 2023 and a total of 40 children and adolescents will be recruited during the study, 30 patients in the experimental group and 10 patients in the control group,.