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Shoulder pain is most common in people who are involved in work
that requires repetitive use of the arms in overhead positions. These overhead positions
increase the loads applied to the rotator cuff muscles and tendons as well as the bursa of
the shoulder. This can lead to irritation and pain in the shoulder.
Shoulder pain is also common in people who train with weights in the gym. Muscle imbalances,
such as tightness of the pectoralis minor and weakness of the serratus anterior and lower
trapezius, can lead to increased load on the rotator cuff tendons during weight training.
This can lead to symptomatic impingement with tendinopathy and bursitis.