Effects of Single Thoracic Manipulation and Special Massage Technique (RT Technique) on Chronic Mechanical Neck Pain

Inclusion Criteria: * They have neck pain on posterior neck or shoulder, which is the area from superior nuchal line to spinous process of 1st thoracic vertebrae, with mechanical characteristics consisting of the symptoms provoked by sustained prolonged neck posture, neck movement or palpation of cervical musculature (Martı´nez-Segura et al., 2006). * They have symptoms for at least 3 months in duration. * They have pain level at rest at least mild level (from 3 score or greater) measured by Visual Analog Scale (Jensen et al., 2003). * They have a baseline Neck Disability Index (NDI) Thai version score of 10% or greater (Suvarnnato et al., 2013). Exclusion Criteria: The subjects will be excluded from current study if they have the following conditions including: 1. Cervical radiculopathy or myelopathy 2. History of whiplash injury within 6 weeks of examination 3. History of cervical surgery or thoracic surgery 4. History of cervical or thoracic injuries including fracture or dislocation 5. Fibromyalgia syndrome 6. The serious spinal conditions including spinal osteoporosis, spinal tuberculosis, and tumors 7. History of treated by spinal manipulation within 2 months before participating in the study 8. The diseases that are contra-indication to receive a spinal manipulation, such as hypertension, heart disease and meningitis 9. Pregnancy