Published by Childrenâs Mercy Hospital, Endorsed by the Missouri American Academy of Pediatrics and the Midwest Chapter of Society for Adolescent Medicine Volume 13, Number 4, Fall Quarter 2011. Adolescent Update. Daryl A. Lynch, MD is Section Chief of Adolescent. Medicine at Childrenâs Mercy Hospital.
Upper Body. The primary muscles in the upper body that are used when performing a golf swing are the shoulders and back muscles. As with all muscles involved in the swing, it is important for the upper-body muscles to be both fit and flexible.
The muscle that handles most of the work during the dumbbell fly is the pectoralis major, which is the main chest muscle. The pectoralis major has two heads: The clavicular head at the upper section of your chest, and the larger sternal head.