The effects of focused shock wave on pain, range of motion, muscle strength and quality of life in non-professional athletes with chronic supraspinatus tendinopathy.

Effects of focused shock wave on pain, rang of motion, muscle strength and quality of life in non professional athletes with chronic supraspinatus tendinopathy

Randomized clinical trial, without control group, on 32 participant, using block randomization

This is two blinded block randomized clinical trial that compare the effects of shock wave and friction massage on supraspinatus tendinopathy. Evaluation and treatment of cases and is done by another physiotherapist in the Physiotherapy Clinic of Oxin The variables and measurement method and treatment protocol in the groups are as follows: Range of flexion, abduction, external rotation with an inclinometer, strength of the supraspinatus with a dynamometer, and pressure pain threshold of the supraspinatus, middle deltoid, and upper trapezius with an algometer، determination of visual pain using questionnaire before and after each treatment session and quality of life with questionnaire .Treatment protocol for group 1 performing 4 shock wave sessions and for group 2 performing 4 sessions friction massage once a week. both groups also receive 12 training sessions (3 times a week).

Inclusion criteria: non-professional athletes; pain in sport activities in last 3 months; age limitation 20-45 years old; body mass index below 30; being positive at least 2 of these test: empty can, painful arc, Hawkins. Exclusion criteria: all contraindication for shock wave; history of surgery, fracture or osteoarthritis in the treatment areas.

Intervention group1: 4 shock wave sessions once a week Intervention group 2: 4 friction massage sessions once a week Both group recieve 12 sessions of exercise therapy ( 3 times a week)

Pain reduction ,improve range of motion and quality of life

AABB; BBAA; ABAB; BABA; ABBA; BAAB. Write these items on six paper and put in the six packets. Draw eight times until eight envelopes are selected, provided that the envelopes are repeated; each characteristics of the specification of the four allocations of the individual.

The main researcher in this study won't aware of the randomization of the patients and the patients will treat by another therapist who will aware of the treatment groups. At the end, the data analyst will analyze the data without knowing what treatment package groups 1 and 2 received.