Biomechanics is the study of the movement of living things and how efficiently these living things move. Biomechanics is used in sport to detect errors and pattern movements while performing skills . It can also be used to help prevent injuries and improve the player’s performance. The following is a report on the biomechanical factors that affect the dig, a defensive skill in volleyball. I was videoed performing this skill and in this report I will discuss the strengths and errors in my performance. I will discuss how they affect my performance and my teams overall performance. Biomechanical principles such as momentum, centre of gravity, base of support, impulse, friction and angle of release relate to the dig. In this report I will also discuss recommendations to improve my performance.
2.1 Technically correct performance of the skill
The purpose of the dig is to control the ball and pass it to the setter at the net. It is used as a defence move, especially after receiving a serve or a spike from the opposing team. 2 The dig is commonly used when the ball is below chest height, to bring the ball up to the team setter and stop it from touching the ground. 3
When preparing for the dig your knees should be bent, with feet shoulder width apart in an easy stride position, ready to move to the ball if necessary. Hands should be joined with thumbs parallel, elbows locked and arms should be parallel to thighs to create a flat platform to hit the ball with4. While executing this skill, the ball should be received in front of the body with the body raised slightly towards the ball, while keeping knees bent. The platform created with your arms should be slanted toward the target and your weight needs to be transferred forward. While doing this, eyes should be kept constantly on the ball. After you have hit the ball the hands should remain joined and elbows remain locked. The platform is to follow the ball to the target and arms should...