Group A were receiving diaphragm Manual therapy by Leon Chaitow. Subsequently, in order to indirectly stretch and mobilize the fibres of the diaphragm, diaphragmatic manual therapy was used, which should result in improved muscle contraction and reduced tension. The doming diaphragmatic technique and the manual diaphragmatic release technique, both as described by Leon Chaitow, will be among the experimental methods employed. For 10 min, both manoeuvres were performed in 2 sets of 10 repetitions each, separated by 1 min.

Group B has received the Sustained natural apophyseal glide (SNAGS). Treatment procedure for SNAGs was sustained natural apophyseal glides whereby the patient attempts to actively move a painful or stiff joint through its ROM while the therapist overlays an accessory glide parallel with the treatment plane. SNAG mobilization was given to a patient (as defined by Mulligan) sitting on a chair. At the same time, the treating physiotherapist stood behind by placing the medial border of the distal phalanx of the thumb on the spine of one vertebra above the affected region. The glides were given with the tip of the thumb placed at an angle of 45° along the eyeball direction reinforced by another thumb. In the session, glides were repeated six times, and three sets were given at C3-C7 cervical levels.

Transcutaneous Electric Nerve Stimulation (TENS) of Care Vision company will be applied, with a pulse duration of 250 microseconds at a frequency of 80 Hz for 15 min in the suboccipital region and the trapezius bilaterally.

The primary outcome was pain assessment by the Numeric Pain Rating Scale (NPRS). This is a reliable self-reported 11-point numeric scale, where each number reflects the intensity of the pain referred by the patient: "0" stands for "no pain" and "10" for "the worst possible pain". Patients verbally selected 3 values that were most in line with the intensity of pain that they had experienced in the previous 24 h, corresponding to current pain and to his/her best and worst pain. The average of the 3 ratings was used to represent the patient's level of pain over the previous 24 h. NPRS was assessed before and after each treatment session. The reliability is (r = 0.96 and 0.95, respectively) and validity correlations range from 0.86 to 0.95

Disability was assessed using the Urdu version of the Neck Disability Index (NDI). This is a reliable scale and was self-assessed by the patients and filled in at the beginning and at the end of the whole treatment. The results of this questionnaire have been utilized to evaluate the disability. It consists of 10 items: 7 linked to activities of daily living, 2 to pain, and 1 to concentration. From 0 to 5, each item received a score. Higher scores corresponded to more disability, and the total score was reported as a percentage. The reliability is between 0.50 and 0.98.

An instrument called a goniometer was used to measure a joint's range of motion. Physical therapists typically use a goniometer to measure a range of motion. At the initial evaluation, the therapist can determine the possible range of motion using a goniometer. The reliability is (r = .58). Neck ROM will be measured in this study using a Universal Goniometer.