Written by A team from Brazil has published a study on the potential relationship between training preferences and styles of movement in 35 climbers, and potential shoulder issues. They looked at self-report data, but also undertook medical and physical examinations. The study noted concern with shoulder apprehension (a type of movement that involves moving a bent arm out to the side and in a posterior-fashion behind you) during dynamic movement. Authors recommend strength & conditioning, as well as technical adaptations, to minimize stress on joints and tendons in these positions.
The Beta Angel Project 