Chronic neck pain is a common musculoskeletal disorder that negatively affects daily life and quality of life. Exercise and manual therapy are widely used treatment strategies, but there is limited evidence comparing different rehabilitation approaches. This randomized controlled trial aims to compare the effects of instrument-assisted soft tissue mobilization and manual therapy on pain, functional status, cervical muscle endurance, and range of motion in individuals with chronic neck pain. Twenty-four participants will be randomly assigned to two groups and receive treatment three times per week for four weeks. Assessments will include the Visual Analog Scale, Neck Disability Index, cervical muscle endurance tests, and goniometric range of motion. The results are expected to support evidence-based strategies for managing chronic neck pain.

Inclusion Criteria:

• Age between 18-40 years
• Diagnosis of chronic neck pain (≥12 weeks duration)
• Pain intensity ≥ 3 cm on the Visual Analog Scale (VAS)
• Voluntary participation and signed informed consent

Exclusion Criteria:

• Previous cervical spine surgery
• History of acute trauma, fracture, or dislocation in the cervical region
• Presence of neurological deficit, inflammatory disease, or systemic rheumatic condition
• Malignancy, severe cardiovascular or neurological disorder
• Participation in a similar treatment program within the past 6 months
• Current use of corticosteroids