Method: Patients attending primary care with subacromial pain are offered participation. If accepted, they will participate in a three month rehabilitation program. The duration of symptoms can vary from 2 weeks and longer. The patients will be randomized to either rehabilitation; the specific exercise strategy or active control exercises. All patients has an equal number of sessions with the physical therapist (PT) to offer similar attention and support with exercise performance. A blinded physical therapist evaluates the following outcomes at baseline and after three-, six and twelve months: