Effects of Neck Stabilization and Isometric Neck Exercises on Pain-Related Disability, Psychological Status, Sleep Disturbance and Cardiopulmonary Function in Patients with Non-specific Chronic Neck Pain

INTERVENTION: ISOMETRIC NECK EXERCISES NECK STABILIZATION AND ISOMETRIC NECK EXERCISES NECK STABILIZATION EXERCISE CONDITION: ; Musculoskeletal Diseases Musculoskeletal Diseases PRIMARY OUTCOME: Neck Pain Disability Index‐ This is a modification of the Oswestry Low Back Pain Disability Index. It is a patient‐completed, condition specific functional status questionnaire which includes 10 items namely pain, lifting, personal care, reading, concentration, work, headaches, driving, sleeping and recreation. It is the most commonly used self‐report measure for neck pain. Each of the 10 items is scored from 0‐5, with 0 representing no pain or limitation and 5 representing as much pain as possible or maximal limitation. SECONDARY OUTCOME: Borg's scale of perceived exertion ‐ This is a tool useful in measuring an indiviual’s effort and exertion, breathlessness and fatigue during physical work.. On the 15‐point scale (6‐20) the number 6 indicates “no feeling of exertionâ€? while 20 indicates “very, very hardâ€? Hospital anxiety and depression scale ‐ This is an instrument which was developed to assess depression and anxiety in patients and the general population. Fourteen items are equally divided into subscales: anxiety (HADS‐D) and depression (HADS‐D). The HADS‐A includes items such as tension, worry, fear, panic, difficulties in relaxing and restlessness while the HADS‐D includes items measuring anhedonia (not experiencing joy). Responses are rated on a 4‐point likert scale and range from 0 to 3 Insomnia severity Index‐ This is a brief instrument designed to assess the severity of both nighttime and daytime components of insomnia. It is available in several languages and is increasingly used as a metric of treatment response in clinical research. The insomnia severity index has 7 questions with a score from 0‐4. INCLUSION CRITERIA: Subjects referred to physiotherapy clinic with diagnosis of non‐specific chronic neck pain