The shoulder is the most mobile joint in the body but still has the responsibility of ensuring a strong stability of our upper limbs during daily activities. The shoulder joint therefore requires a significant level of neuromuscular control at all times. The shoulder heavily relies on 4 key stabilizing muscles, known as the rotator cuff complex (RC). A tendinopathy of the RC may cause pain, significant muscle weakness, and a decrease in motor control of the shoulder during functional activities as well as work tasks. Individuals who have an RC tendinopathy often have neuromuscular and proprioceptive deficits. The objectives of this study are to evaluate the effectiveness of a brand new strength and motor control exercise program for the upper extremities and to compare the effectiveness of this program to usual physiotherapy care (such as manual therapy, motion exercises, strengthening, manual techniques) in reducing shoulder pain and improving overall function. A total of 44 participants suffering from an RC tendinopathy will be recruited; 22 will be assigned to the exercise group (EXP) and 22 participants will be receiving usual physiotherapy care (CTL). Participants in the EXP group will partake in the new exercise program 3 times / week for 6 weeks whereas participants in the CTL group will receive usual physiotherapy treatments twice / week with home exercises for 6 weeks. The results of this study will provide clinicians with a cost-effective and innovative treatment approach to treating shoulder pain. This study will provide active rehabilitation guidelines for reducing shoulder pain and the incidence of recurrence.