Effects of Yoga Therapy in Rehabilitation Compared to Physiotherapy in Moderate Axial Spondyloarthritis (axSPA)

Inclusion Criteria: * French-speaking patient aged 18 and over * Patient with axial spondyloarthritis (axSPA) according to Assessment of SpondyloArthritis International Society, diagnosed by a rheumatologist * "Moderately active" to "active" form of axSPA (basic BASDAI \> 3) * Stable disease: No recent or foreseeable introduction in the next 6 months of drug treatments for axSPA (excluding analgesics) * Absence of disabling stress urinary incontinence * Geographical or organizational possibility of undergoing the study * Patient informed and having signed the informed consent form for participation in the research Exclusion Criteria: * Pregnancy or breastfeeding * Recent childbirth (within the last six months) * Patient already practicing yoga or having practiced it in the last six months * Abdominal or spinal surgery in the last six months * Motor neurological deficit * Sphincter deficit * Any other somatic pathology preventing the practice of physiotherapy or yogatherapy according to the opinion of the evaluating clinician * Depressive syndrome requiring specific treatment * Non-affiliation to a social security scheme (beneficiary or beneficiary) or to another social protection scheme * Patient deprived of liberty by judicial or administrative decision or under legal protection (guardianship, safeguard of justice) * Currently participating in or in a period of exclusion from: another interventional research involving human participants, a clinical trial on a medical product for human, a clinical investigation on a medical device. Participation in non-interventional research is authorized.