Which of the following is NOT a characteristic of dynamic posture?

Dynamic posture refers to the ability to maintain an aligned body position while in motion, which is critical for activities like swinging a golf club. When considering the characteristics of dynamic posture, the focus is on how well the body maintains stability and alignment during movement.

A stable foot position is essential for effective dynamic posture because it allows for a solid foundation from which to generate movement. A stable base helps in distributing weight evenly and maintaining balance, which are crucial for dynamic activities. In contrast, losing posture, a flat shoulder plane, and early extension all indicate a breakdown in effective dynamic posture. They lead to instability and can negatively impact performance.

Since a stable foot position supports dynamic posture by enhancing balance and available motion, it is characteristic of dynamic posture rather than not being one. The other options reflect characteristics that disrupt or detract from maintaining proper dynamic posture during movement.