Prep

Prep - Once the football reaches your hands, you grasp the ball with both hands and start to move backwards to look for any open recievers.  The ball then goes into your dominant hand that will be making the pass.

Shoulder Girdle - Adduction with the Trapezius middle fibers, Trapezius lower fibers and the Rhomboids.

Shoulder Joint - Flex shoulder approximataly 45 degrees isometrically with slight adduction.
Elbow Joint - The throwing arm is being flexed about 100 degrees using the brachialis, brachioradialis, pronator teres, and the long head and short head of the biceps brachii.  The non dominant arm is using the same muscles but is being flexed approximately 90 degrees.
Hip/Pelvic Girdle - When prepping for the throw, the hip/pelvic girdle uses mostly flexion and slight rotation in the movement.  The muscles needed to carry out this movement are iliacus, psoas, rectus femoris, sartorius, pectineus adductor brevis and longus, adductor magnus and the gracilis.
Knee Joint - With the back knee being slightly flexed approximately 10 - 15
degrees and the front knee being flexed approximaltely 20 - 30 degrees, the two legs/knees work together to complete the throw using the biceps femoris, popliteus, semi-membranosus and semi-tendinosus.