Inclusion Criteria:  Medical prescription for chronic low back pain rehabilitation Evolution of low back pain for at least 3 months No treatment or rehabilitation for low back pain performed within 12 months before enrollment Written informed consent given  Exclusion Criteria:  Spinal fracture or previous spinal surgery Cognitive impairments that prevent from understanding the rehabilitation exercises Patient with insufficient understanding or expression in French Non-mechanical pain : gradually worsening pain, present at rest and especially at night Neurological symptom : deficit in the control of bladder and anal sphincters, motor weakness of lower limbs, Cauda equina syndrome Pubis paresthesia (or perineum) Severe trauma (such as fall from height, traffic accident) Unexplained weight loss History of cancer Drug use or long-term use of corticosteroid Spinal deformity Altered general condition Patient with signs of neurological impairment : positive Lasegue test (Straight Leg Raise Test) or positive Slump test, or DN4 questionnaire greater than or equal to 4 Patient suffering from a central or peripheral neurological pathology Patient taking a level II (weak opiates) or III (morphine and related substances) analgesic treatment Patient under guardianship, curatorship or legal protection