Materials and Methods: This controlled clinical trial was conducted on 80 patients with chronic non-specific shoulder pain in 2019; the age range was 18- 60 year. They were randomly assigned to the Qamz (pressing some points around the shoulder with fingers) (A) and control (waiting list) groups (B). The intervention was done one session each week for 4 weeks, and patients were followed for 3 months after the fourth intervention. Qamz was performed, which is generally the pressure of the position with fingers. The visual analogue scale (VAS) was used to measure the shoulder pain at baseline, 1st, 2nd, 3rd, and 4th week of intervention, and 3rd month after the end of interventions. A Gonimeter was used to assess the shoulder"s range of motion at baseline, 4th week and 3rd month after the end of the interventions. Data were analyzed with repeated measures ANOVA in SPSS software.

Results: Thirty-six patients in group A and 34 in group B completed the study. Mean age was 43.92±8.7 years. Twenty-one patients (30%) were male. The shoulder pain decreased as 63.9 ± 30.4% and 11.7± 23.7% in groups A and B, respectively (P<0.001 for comparison between the groups). Flexion [30.69±39.89 vs. 2.64±7.9 degrees, P = 0.001] and abduction [28.75±37.63 vs 2.2 ± 7.09 degrees, P=0.001] of the shoulder were significantly improved in group A more than group B. No adverse effects were reported.

Conclusions: Qamz significantly decreased the VAS score of the shoulder pain; it increased the range of flexion and abduction of shoulder in patients with nonspecific shoulder pain more than the control group.