With a lot of the guys we work with they have some pretty full on demands for maintenance of shoulder stability and mobility. Twinned with our fitness clients and the wear and tear of everyday life certain exercises are pretty much a necessity for building healthy robust shoulders.
Primarily, in the sporting arena we work with a lot of swimmers and tennis players. The overhead carry is great as it encourages upward rotation of the shoulder blade. If we lose upward rotation during a movement we may typically resort to placing more emphasis on to the elbow and shoulder joint rather than allowing the muscles around the shoulder blade to do the job to the best of their abilities. Swimming and tennis also have a lot of force placed upon the shoulder when it is overhead or near to full extension. This means that injury risk is highest if you can not stabilise the joint in place.
Single handed this exercise places a challenge to the rotational stability function of the abs as well as maintaining anterior core control – in simple terms it allows your abs to do the work as opposed to your lower back arching through the movement.
Loading this exercise can make the form pretty poor quickly if your ego is bigger than doing things properly. So try it out- we give it to some of our trainees early on in sessions to encourage good core position. We also use it as a challenging finisher- that said if you have had a heavy upper body training day form can fall apart on pretty low loads.