Inclusion criteria:
Having mechanical neck pain more than three months and less than two years
age between 25 and 60 years
having normal laboratory test results
absence of fracture, dislocation, tumor or infection on radiological investigation
pain severity of at least 4/10 according to the visual analog scale (VAS)
willingness to sign the informed consent form.
Presence of disc bulge, protrusion or herniation at L4-L5, and L5-S1 level
Exclusion criteria:
pregnancy and breastfeeding
having a cardiac pacemaker implanted
metal implant or electronic device in any part of body
a prior trauma (whiplash), surgical or algological intervention in lumbar area
history or suspicion of any malignancy
presence of inflammatory joint pain or diagnosis of a rheumatic disease
presence of an open superficial wound
presence of more severe pain in any part of body other than low back pain
an advanced stage mood disorder, a neurological disorder (multiple sclerosis, syringomyelia, or Parkinson’s disease)
radiographical Grade ≥2 spondylolisthesis, spinal instability or advanced spondylarthrosis
physical therapy for back pain within the last six months
a history of drug use other than paracetamol (NSAIDs, centrally acting and narcotic analgesics) or discontinuation of such drugs less than three months before the enrolment.