Sammendrag
Purpose: To compare two different types of exercise programs in relation to dose response effects in patients with long lasting subacrominal shoulder pain. Relevance: There is increasing evidence that exercise therapy is effective for this patient category, but no evidence regarding what type of exercises and dosage is most effective. Participants: 61 patients with unilateral subacromial pain. Methods: Multi center, randomized controlled trial, where patients were randomly assigned either to a high dosage (HD) medical exercise therapy group (n=30) or to a low dosage (LD) exercise therapy group (n=31). Patients in the (HD) group performed a total of 11 exercises consisting of 3 global exercises using a stationary bike and 8 semiglobal and local exercises doing 3 sets of 30 repetitions of each exercise, a total of 80-90 mintes. The (LD) group performed a global exercise once for 10 minutes and performed 5 semiglobal and local exercises doing 2 sets of 10 repetitions of each exercise, a total of 20 ? 30 minutes. Both groups received 3 treatments a week over 3 months. The difference between the groups were time performing aerobic global exercises, number of exercises, repetitions and number of sets. The patients were supervised and the exercises were individually tailored and graded according to the clinical picture. Patients were assessed at inclusion, end of treatment and at 6 months follow up where pain was measured using a visual analogue scale (VAS), function was registered using the Shoulder Rating Questionnaire (SRQ), isometric strength using a digital dynamometer (MicroFET2, Westloch, Sweden), range of motion of the shoulder using a digital inclinometer (Dualer IQ, JTech Medical, USA. Analysis: Differences between the groups were analyzed using a one-tailed Independent-Sample T-Test. Results: There were no statistical difference between the two groups at baseline. During treatment 5 patients (8%) dropped out. At end of treatment the (HD) medical exercise therapy group came out significantly (p
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