The rotator cuff muscles are responsible for providing a coordinated and harmonious movement to protect the shoulder complex .
It is the trunk that generates the power , and the hip and trunk muscles transmit this power and speed to the club head .
Although the rotator cuff muscles are responsible for providing a coordinated and harmonious movement to protect the shoulder complex , it is the trunk that generates the power , and the hip and trunk muscles transmit this power and speed to the club head .