To compare the shoulder girdle exercises with and without electromyographic biofeedback on the electromyography activity of the shoulder girdle muscles in individuals with primary impingement syndrome: A randomized clinical trial

Determining the effect of exercises of shoulder girdle muscles with EMG biofeedback on electrical activity of this muscles

controlled, parallel-group, single-blind, randomized clinical trial on 45 patients, Permutated block randomization

Study will be conducted at the Neuromuscular Rehabilitation Research Center of Semnan University of Medical Sciences People with primary shoulder impingement syndrome are randomly assigned to one of three intervention and control groups The evaluator will be blinded to allocation

inclusion criteria: age 18 to 35 normal BMI onset of shoulder pain less than a year pain in the anterior or lateral part of upper arm VAS <4 positive at least 3 (painful arc during flexion or abduction Neer Kennedy-Hawkins Jobe tests pain during resisted movement of external rotation or abduction) affected side is dominant continuous pain for at least one week in six months Past no limitation in shoulder ROM exclusion criteria: simultaneous pain in both shoulders positive drop arm test sulcus sign history of heart disease pregnancy person cannot work with EMG biofeedback other orthopedic diseases and surgery fracture dislocation subluxation in the upper quadrant of skeleton Systemic and neurological diseases use of corticosteroid drugs and rehabilitation of neck and shoulder girdle in last 6 months and any drug in last two weeks

All three groups receive routine physiotherapy The intervention group perform specific progressive resistive exercises of external rotator muscles of arm and stabilizer muscles of this movement with EMG biofeedback, at the end they receive cold pack. first control group perform the same exercises without feedback and second control group only receive routine physiotherapy

normalized muscle electrical activity; pain; DASH questionnaire score

The sample size in each group is 15 people (45 people in total). Permuted block randomization is used for randomization. For this, we use blocks of six in the following order. In each block, a means the intervention group (EMG biofeedback with exercise and routine physiotherapy), b (exercise therapy along with routine physiotherapy) and c (routine physiotherapy alone) means the control groups. First, a number is assigned to each of the blocks (aabbcc cabbac abcabc bacbac cbaabc bbaacc ccaabb aaccbb ccbbaa) randomly from 1 to 9, then people are placed in the blocks from block one and from the left. and based on the letter (a, b, and c) that is chosen for each person, the person enters the intervention or control groups. The participants, the therapist and the evaluator will be unaware of the grouping. To implement the generated random sequence, the method of hiding the box or coded cans is used. In this method, the cans will be numbered based on a random sequence, and inside the boxes, the intended intervention will be provided to the therapist with a sheet on which random allocation is written, with the condition that the boxes are sealed and completely confidential. and the therapist will assign them to the intervention and control groups based on the order of arrival of the patients.

A physiotherapist will be in charge of the treatment process and another physiotherapist will evaluate the desired variables. For this reason, the study will be a single-blind study from the evaluator.

There is no further information.