 Inclusion and exclusion criteria. Participants are included when they meet the following criteria: NSP-CLBP from 12 weeks and longer that are continuously present with and without recurrent complaints, Age between 20 and 60 years and not yet treated by the 4MTOR. Participants are excluded when they meet the following criteria: Radiological disturbing pain beyond knee, extremely serious neurological disorder symptoms, overall malaise, spinal cord malignancy, unexplained weight loss, prolonged corticosteroid use, osteoporotic vertebral fracture, spondylitis ankylopoetics, spinal stenosis, rheumatic arthritis, vertebral fracture and severe deformity of the spinal cord. 