Analysis of a Line-out Throw.

Consistency: It is essential that throwers are consistent in their release of the ball. It is essential that the correct practice is performed, in game-like situations, observed by the coach, and with corrections made where required.

Trajectory: To arrive at the optimum position the ball must be released from the thrower's hands at the correct speed and angle to ensure that it arrives at the jumper's hands at the required moment. It may be thrown a short or a long distance, and it may be required to pass over the hands of competing jumpers or travel quickly and directly to the jumper. Whatever the requirements, the thrower must learn to apply the correct propulsive forces at the correct angle.

The Movement of the Body

Below are two tables to show which bones and muscles are used during a line-out throw.

This table shows the movements during the draw-back stages.

This table shows the movement during the throwing stages.

Step-by-Step Analysis

To help take you through the routine here is a step-by-step analysis to help you.

• Hold ball by placing one hand in front of the other (each hand on either side)  and guide with the front hand while putting the power into the pass from the back hand
• Flex your arms at the elbows by contracting at your biceps
• You must then flex at your shoulders as far as you can so the ball is behind your head. This can be made with the help from your trapezius, deltoids, latissimus dorsi and the infraspinatus
• After this you can either take a step and then throw (making sure you do not cross the line) or you can throw from a static stance
• The throw itself is made from your pectoralis major contracting (to extend your shoulders again) and the contraction of your triceps (to extend your arms at the elbows). While doing this (at speed to get good distance on the throw), you must let go of the ball at the appropriate time to send the ball to the jumper in the line-out.