Speaker #0Welcome to BioPilates Deep Dive, the podcast that explores anatomy, biomechanics, and the intelligence of movement through Pilates exercises. In this new episode, I invite you to discover the roll-down with back extension prep performed on the Cadillac or Tower. This exercise combines two fundamental movements of the spine, the sequential articulation into flexion during the roll-down and extension of the upper back. It creates a true dialogue between the pelvis, the spine, the ribcage, the scapulae, the arms, and the cervical region. It is also a particularly interesting exercise for understanding two muscles that are often confused, frequently overused, and sometimes unfairly blamed for all cervical tension, the upper trapezius and the levator scapulae. In this episode of Biopilates Deep dive, we are going to break down the movement. But above all, understand how to create extension through the upper quadrant without turning that extension into cervical compression, shoulder shrugging, or lumbar hyperextension. The exercise begins in a seated position facing the roll-down bar. The pelvis and spine are neutral. The legs are straight and parallel. The ankles are dorsiflexed. And the feet press against the uprights of the Cadillac or Tower. However, keeping the legs straight should never become an obligation that compromises the organization of the pelvis. If hamstring tension immediately pulls the pelvis into a posterior tilt and flattens the lumbar curve, it is preferable to flex the knees slightly. The legs can then gradually lengthen as the pelvis begins to roll away from the femurs. The arms reach straight forward with the hands holding the bar shoulder distance apart. and the palms facing down. The scapulae are stabilized against the ribcage, but they are neither squeezed together nor artificially pulled downward. This is an essential distinction. Stabilizing a scapula does not mean immobilizing it. The scapulae have no direct bony articulation with the ribcage. They therefore rely heavily on the coordinated action of the axioscapular muscles to remain in contact with the ribs. while accompanying the movements of the arms and spine. After a preparatory inhale, the exhale accompanies the beginning of the roll-down. The movement does not begin by simply allowing the torso to fall backward. It begins at the pelvis. The anterior superior iliac spines move away from the front of the femurs. The pelvis rolls over the femoral heads. and lumbar flexion gradually increases through the action of the abdominals. The transversus abdominis compresses and organizes the lumbopelvic region. The pelvic floor contributes to this deep organization. The rectus abdominis and obliques create flexion, while the spinal extensors control the movement eccentrically. The spine lowers sequentially toward the table, first the sacrum, then the lumbar region, the thoracic region, And finally the head. The aim is for each segment to make gradual contact with the supporting surface. The bar is not used to allow the body to be pulled backward. It provides resistance and proprioceptive feedback, but control of the movement must remain internal. The practitioner does not hang from the bar. Instead, the spine is organized around the stability of the pelvis and shoulder girdle. Once the body is lying supine, the pelvis and spine return to a neutral position. This is where the most specific part of the exercise begins. On the inhale, the elbows flex. This flexion creates a pulling action on the bar and facilitates the organization of the shoulder girdle. The arms do not work alone. Force travels from the hands through the forearms, elbows, humerae, and scapulae, and then into the ribcage. Here we find a true upper body pulling pattern. Elbow flexion is combined with scapular stabilization and thoracic spine extension. Within the Stott-Pallades movement principles, a pulling pattern can specifically facilitate scapular retraction and progress into extension of the upper spine. The sternum rises toward the ceiling. However, the aim is not to thrust the ribs forward. or lift the entire thorax by hinging through the lumbar region. The extension must be distributed throughout the spine. The thoracic spine initiates the movement. The thoracic vertebrae progressively extend, the front of the rib cage opens, and the scapulae remain organized against the ribs. The cervical spine follows the line created by the thorax, without the chin suddenly lifting toward the ceiling. The gaze may gently accompany the movement, but the head should not become the driving force behind the extension. The upper quadrant is not limited to the shoulders. It includes the thoracic spine. spine, the ribs, the sternum, the clavicles, the scapulae, the glenohumeral joints, the cervical spine, and the arms. In the roll down with back extension, all of these elements must function as a system. As the elbows flex, the elbow flexor muscles create the pulling force on the bar. The rotator cuff muscles help center the humeral heads. The scapula stabilizers control the gliding of the scapulae. over the ribcage. The thoracic extensors contract concentrically to lift the sternum. Meanwhile, the abdominals do not disappear from the movement. Their function changes. The obliques, the transversus abdominis, and the entire abdominal wall control the range of extension and prevent the lower ribs from projecting forward. They allow the extension to remain thoracic instead of turning into a lumbar hinge. In other words, The abdominals do not block extension. They regulate it. The inhale naturally supports this phase. During an active inhalation, the sternum and upper ribs move slightly forward and upward, while the lower ribs open laterally and posteriorly. This breathing mechanism can facilitate thoracic extension, provided that the inhale remains three-dimensional and does not become a simple vertical elevation. of the shoulders. The trapezius is a large superficial muscle that is functionally divided into upper, middle, and lower fibers. The upper fibers, also known as the descending fibers, originate primarily from the external occipital protuberance, the medial part of the superior nuchal line, and the nuchal ligament. The fibers travel downward and laterally to insert mainly on the posterior border. of the lateral third of the clavicle. The trapezius as a whole also has attachments on the acromion and the spine of the scapula. Its motor innervation is distinctive because it is supplied by the spinal accessory nerve, the 11th cranial nerve. The ventral rami of C3 and C4 primarily contribute proprioceptive and sensory information to the muscle. The upper trapezius can elevate the scapula and contributes to its upward rotation. When the scapula is stabilized, its upper fibers may also contribute to extension of the head and cervical spine. It is therefore essential to understand one fundamental point. The upper trapezius is not a muscle that should systematically be switched off. It plays an essential role in orienting the scapula. and supporting the shoulder girdle. The problem arises when it becomes the dominant driver of a movement that should be produced by the thoracic spine. In this exercise, the upper trapezius contributes to the organization of the shoulder girdle, but it should not cause the shoulders to shrug. As the elbows flex and the sternum begins to rise, the upper trapezius must help modulate the positions of the clavicle and scapula in coordination with the other fibers of the trapezius, the serratus anterior, the rhomboids, and the rotator cuff muscles. Its activity may be primarily stabilizing and often isometric rather than strongly concentric. When the upper trapezius becomes too dominant, the shoulders rise toward the ears, the neck shortens, and thoracic extension is replaced by cervical extension. The practitioner may appear to be lifting higher when in reality they are simply creating greater compression in the upper part of the neck. The upper trapezius can also act as an accessory breathing muscle. An excessively vertical inhalation performed by lifting the upper ribcage and shoulders therefore encourages its overuse. The desired inhale should instead widen the ribcage in all three dimensions. The levator scapulae lies deeper than the upper trapezius. It originates from the transverse processes of the first four cervical vertebrae from C1 to C4. More specifically, its attachments are located on the posterior tubercles of these transverse processes. Its fibers travel downward at an oblique angle and insert on the upper part of the medial border of the scapula, between the superior angle and the root of the spine of the scapula. Its innervation is supplied primarily by the dorsal scapular nerve, most commonly associated with the C5 nerve root, with direct contributions from the C3 and C4 cervical nerves. Its primary action is to elevate the scapula. It also contributes to downward rotation of the scapula. When the scapula is stabilized, it can contribute to cervical extension, lateral flexion, and rotation of the head. toward the same side. The upper trapezius and the levator scapulae, therefore, have one feature in common. Both can elevate the scapula and both have a direct relationship with the cervical region. However, they do not perform exactly the same actions. The upper trapezius contributes to upward rotation of the scapula, while the levator scapulae promotes downward rotation. Their activity I'm must therefore be carefully modulated to maintain the appropriate orientation of the scapula. During the roll-down with back extension, the levator scapulae should not pull the superior angle of the scapula toward the neck. When it becomes dominant, we often observe elevation of the supramedial angle of the scapula, shortening along the side of the neck, and sometimes a slight rotation or lateral inclination of the head. The practitioner may feel as though they are stabilizing their shoulders when, in reality, they are suspending them from the cervical spine. Proper organization involves maintaining length through the back of the neck, width across the shoulders, and stable contact between the scapulae and the ribcage. The slight scapular depression that accompanies the initiation of the extension should never become a forced action of. pushing the shoulders as low as possible. On the exhale, the spine lengthens back into a neutral position as the arms gradually straighten. The movement then begins again from the head. A slight craniovertebral flexion initiates the return. The cervical and thoracic spine flex, the ribs move closer to the pelvis, and the abdominals progressively roll the spine away from the table. The movement passes through the imprinted position And... before bringing the pelvis back to vertical with the weight directly over the sit bones. The scapulae remain controlled so that the tension of the bar does not pull the shoulders forward. Finally, the inhale lengthens the spine and returns the body to the upright starting position. The complete sequence, therefore, alternates between two precise directions, articulation from the pelvis toward the head during the roll-down, followed by articulation from the head toward the pelvis during the roll-up. The Cadillac repertoire clearly distinguishes this sequence of roll-down, extension, and articulated return. The first common mistake is leaning backward instead of rolling the pelvis away from the femurs. The spine then remains almost straight, and the movement becomes a simple hip hinge. The second mistake is pulling the bar using only the arms. The elbows flex, but the scapulae are not organized, and the thorax does not respond. The third mistake is attempting to find the range of movement in the lumbar region. The lower ribs project toward the ceiling, the pelvis tilts, and the thoracic region remains relatively rigid. The fourth mistake involves the neck. The chin lifts too early, the occiput moves closer to the upper back. and cervical extension replaces thoracic extension. Finally, the fifth mistake is shoulder shrugging. The upper trapezius and levator scapulae become dominant, the clavicles lose their sense of width, and the neck appears to disappear between the shoulders. The roll-down with back extension prep is therefore much more than a spinal mobility exercise. It teaches us to distinguish between extension and compression, stabilization and rigidity, and muscular participation and muscular dominance. It teaches us that the scapulae should be neither abandoned nor locked in place. It teaches us that the upper trapezius is not an enemy, but rather a muscle that must work as part of a system. It also shows us that the levator scapulae can either support the organization of the upper quadrant or, on the contrary, redirect the effort into the cervical region. When the movement is performed correctly, the sternum rises without the ribs flaring, the thoracic spine extends without compressing the lumbar region, and the neck follows the curve without becoming the driving force behind the movement. This is precisely where the intelligence of the Cadillac and tower lies. The resistance provided by the springs is not used only for strengthening. It reveals the way in which the body receives, organizes, and transmits force. Thank you for listening to this new episode of BioPilates Deep Dive. If you enjoyed this podcast, please subscribe so that you do not miss any future episodes. You can also recommend it to those around you. particularly if you feel that it has been useful to you and could also be useful to others.
