Mulligan group underwent an exercise program planned as 6 sessions. A one-day gap separated each session, and the entire program spanned 11 days. In Mulligan group, they received SNAG and NAGS techniques as part of the Mulligan concept applications, utilizing tools like the Mulligan belt, sponge, and stretcher. Both groups participated in supervised stretching and strengthening exercises.

Control group underwent an exercise program planned as 6 sessions. A one-day gap separated each session, and the entire program spanned 11 days. Both groups participated in supervised stretching and strengthening exercises.

Mulligan Concept was applied by the physiotherapist who received A-B module trainings. Mulligan techniques were performed with 3 sets of 10 repetitions and 15-20 seconds rest between sets. Mobilisations were applied to the spinous process of each vertebra of the lumbar region with 3 sets of 10 repetitions of SNAG and 3 sets of 10 repetitions of NAGS techniques. In the standing position, the physiotherapist took a position next to the patient and stabilised the patient by grasping the abdomen with one arm.

Strengthening exercises were applied to the rectus abdominis, internal and external obliquus, transversus abdominis muscles from flexor muscle groups in 3 sets of 10 repetitions. Stretching exercises were applied to the erector spinae and intertransversarii lumborum muscles from extensor muscle groups as 3 sets of 10 repetitions for 15-30 seconds.

Visual analogue scale (VAS) was used to assess the severity of mechanical neck pain. Individuals were asked to mark the pain they felt on a 10 cm long VAS scale ("0" indicates no pain and "10" indicates unbearable pain).

Evaluate back disability status a questionnaire consisting of 10 items. The items measure the severity of pain, self-care, lifting and carrying, walking, sitting, standing, sleeping, social life, travelling and the degree of change in pain, respectively. Under each item, the patient was asked six statements to be marked. The first statement is scored as "0" and the sixth statement is scored as "5". The higher the score, the higher the level of disability.

Active flexion, extension, right/left lateral flexion and rotation of the cervical region were measured in the sitting position with a phone goniometer application.