Inclusion Criteria:  The inclusion criteria were individuals aged between 18 and 65 years with a diagnosis of non-specific low back pain, with or without lower limb irradiation, lasting at least 6 weeks.  Exclusion Criteria:  Pregnancy, spinal tumor or infection, diabetes, spinal fracture or previous spine surgery. Patients with a history of rehabilitation treatment for back pain within the preceding month Unstable medical disorder not controlled by standard treatment and those with a cardiac pacemaker or using any other electrical devices or prosthesis.