[Purpose] The aim of the study was to evaluate the effect of an intervention, including shoulder control and strengthening exercises, on the shoulder function of persons with shoulder impingement. [Subjects] The subjects were patients who visited our hospital due to shoulder impingement syndrome and they were randomly allocated to two groups: a shoulder control and strengthening exercises group (n=17) and a conservative therapy group (n=18). [Methods] Both groups received conservative therapy for 3 sessions (45 minutes per week) for 4 weeks. The shoulder control and strengthening exercises group practiced additional motor control and strengthening exercises for 30 minutes. Values of the pain, function, isokinetic strength and the range of motion were compared with those of the conservative therapy group. [Results] There were significant differences in the amount of change of the pain, function, isokinetic strength and range of motion between the two groups (p<0.05); however as a measure of isokinetic strength, the peak torque of the internal rotators at 60°/sec did not show a significant difference. [Conclusion] The motor control and strengthening exercise program training improved pain, function, strength and the range of motion. These results suggest that a motor control and strengthening exercise program is feasible and suitable for individuals with shoulder impingement syndrome.