- Application of methods: The investigators have chosen a total sample of 30 patients undergoing the study. Only one will be treated the shoulders of patients, if there are cases of bilateral impingement syndrome. Patients will be equally distributed in two groups, receiving first place: Group 1: treatment with magnetic therapy, three times per week lasting 30 minutes each session. Group 2: placebo of magnet therapy, three times per week lasting 30 minutes each session.After the first 3 weeks of application of magnetic therapy, will begin a program of therapeutic exercises (kinesiotherapy) equally to all patients in both groups. These exercises will be conducted after each application of magnetic therapy and all patients will receive a brochure guiding them to perform exercises at home. The applications of magnetic therapy will continue to be 3 times per week with 30 minutes duration each application, but this time associated with exercise, treatment will be done for another 4 weeks. After these four weeks, patients will be reassessed by the scale of Constant and UCLA to evaluate the overall function of the shoulders that received placebo treatment and the magneto.