Effectiveness of Eccentric and Concentric Strength Training in Patients With Subacromial Impingement Syndrome

Effectiveness of Eccentric and Concentric Strength Training in Patients With Subacromial Impingement Syndrome: A Randomized Controlled Trial

The purpose of this study is to investigate and compare the effects of eccentric and concentric strength training on pain, strength, joint position sense and function in patients with subacromial impingement syndrome.

Inclusion Criteria:

• Diagnosis of subacromial impingement syndrome
• Complaints associated with subacromial impingement syndrome for at least 3 months
• No extra pain with 90 degree abduction-90 degree external rotation position of the shoulder
• Ability to complete the entire study procedure

Exclusion Criteria:

• Severe pain; shoulder pain is > 7/10
• History of upper extremity fracture
• History of shoulder, cervical and thoracic surgery
• Having shoulder instability or frozen shoulder diagnosis
• History of shoulder injuries, trauma and / or shoulder symptoms requiring treatment during the last 1 year (except than subacromial impingement syndrome)
• Full-thickness rotator cuff tear
• Systemic musculoskeletal disease
• Neck and shoulder pain with cervical spine movement
• Chest deformity or scoliosis diagnosis