Mobilization With Movement for Shoulder Impingement

Inclusion Criteria: * history of shoulder pain of \> 3months duration * pain localized at the proximal anterolateral shoulder region * medical diagnosis of shoulder impingement syndrome * at least 2 positive impingement tests including Neer, Hawking, or Jobe test Exclusion Criteria: * diagnosis of fibromyalgia * pregnancy * a history of traumatic onset of shoulder pain * other histories of shoulder injury * ligamentous laxity based on a positive Sulcus test and apprehension test * numbness or tingling in the upper extremity * previous shoulder or cervical spine surgery * corticosteroid injection on the shoulder within 1 year of the study * physical therapy 6 months prior to the study