Open-label Placebo in Manual Therapy

Inclusion Criteria: Adult patients (+18 years) who complain of chronic non-specific low back pain for at least 3 months with or without pain exacerbations at the time of recruitment, will be included. -Patients will need to have a diagnosis of low back pain made by a physician Exclusion Criteria: * pathologies such as ankylosing spondylitis, infections, fractures, tumors or metastases. * Pregnant women * patients with previous spinal surgery or undergoing cortisone therapy in the 6 months prior to the trial * diseases that may affect the interpretation of results such as fibromyalgia * patients currently being treated by other specialists or other manual therapists