For which movement does the Cadillac provide a "spring-assisted" effect to improve muscle sequencing?

The Cadillac apparatus in Pilates is particularly effective for assisting with the Roll-Up due to its design and the spring resistance it provides. The primary goal of the Roll-Up is to strengthen the abdominal muscles while promoting proper spinal articulation and control. The Cadillac's springs offer support by providing resistance that enhances muscle engagement, making it easier for practitioners to initiate the movement from their core.

In the context of the Roll-Up, the spring-assisted effect helps ensure that the muscles sequence in the correct order for a safe and effective movement. The springs can help stabilize the pelvis and support the back, allowing the practitioner to focus on the controlled articulation of the spine as they roll up and down. This can also aid in maintaining alignment and preventing strain, particularly for those who may struggle with the movement when performed on the mat without assistance.

While other movements listed, such as Shoulder Bridge, Leg Circles, and Teaser, may also incorporate the use of springs in their performance on the Cadillac, they do not primarily focus on enhancing the specific muscle sequencing required for the Roll-Up in the same integral manner. The specific spring resistance associated with the Roll-Up is what distinguishes this movement for the Cadillac's spring-assisted effect.