Effect of Lumber Core Stability Exercises on Chronic Non-specific Neck Pain

Inclusion Criteria: * Patients with persistent cervical pain for more than 12 weeks without specific diagnosis (chronic non-specific neck pain). * BMI less than 30 kg/m2. * Pain intensity on VAS should be more than 3. * Patient will be able and motivated in completing the study. * Psychologically \& mentally stable. Exclusion Criteria: * Red Flag's symptoms including a history of major trauma, persistent night pain, bladder or bowel dysfunction, and/or lower or upper extremity neurological deficit. * Pregnant women. * Recent or old fractures at spine or upper limbs. * Congenital, or acquired postural deformity. * No previous neck or spinal or shoulder surgery. * No current pathologies (e.g. Disc lesion, nerve root compression, canal stenosis, spinal tumor, spinal infection, systemic inflammatory diseases, …).