What is the maximum deduction for a Level 4 gymnast if they fail to contract or extend during their sequential wave?

The maximum deduction for a Level 4 gymnast who fails to contract or extend during their sequential wave is 0.20. This particular skill is evaluated closely, and a failure to execute the contraction and extension appropriately demonstrates a lack of control and fluidity, which are essential components of the wave movement in gymnastics.

In Level 4 routines, judges are instructed to look for specific execution quality, and the contraction and extension are crucial for demonstrating the gymnast's ability to perform the wave with precision. When a gymnast does not correctly contract or extend during this skill, it is considered a significant error in execution. Therefore, the deduction reflects the importance of maintaining proper body positions throughout the movement.

This deduction highlights the judges' expectations for the performance quality at this level, and a 0.20 deduction indicates a substantial impact on the overall score due to the absence of these crucial elements. Understanding this can help gymnasts focus on the importance of body mechanics during their routines.