These muscles also serve to protect the abdominal organs. If you have limitations in your spine rotation flexibility (in one or both directions), this exercise can help you gain flexibility in the proper region of your spine and enable a better turn. This region is served by several muscles that contribute to spine stability in a variety of postures, providing the ability to flex, side bend, and rotate the trunk. Your external and internal obliques rotate your trunk. The core muscles, called the internal obliques, stabilize your spine and assist your external obliques in trunk rotation. Rotation: Note: There is practically no rotation that occurs at the lumbar spine due to the design of the facet joints in the lumbar region, which only allow up to 2 degrees of rotation (this is a protective mechanism, as too much lumbar rotation would put the spinal cord at high risk of injury). Rotation happens at the trunk when you turn your trunk to one side or the other in the transverse plane. It also works your core muscles, including your abdominals, back muscles, and the muscles … Point of application is drawn on superior vertebra. Therefore, this group causes ipsilateral rotation * of the trunk. Prime Movers: Contralateral external oblique and ipsilateral internal oblique Think of anti-rotation exercises as a force being delivered that is trying to cause trunk rotation, and your duty is to prevent that rotation from occurring. Line of application follows muscle fibers medially or laterally, depending on group, to their attachment on inferior vertebra. What muscles make these movements happen? The anterior muscles of the trunk (torso) are associated with the front of the body, include chest and abdominal muscles. Transverse plane illustration of muscles' effects on rotation. Stabilizers: Rectus abdominis, psoas, intrinsic stabilization subsystem (Transverse abdominis, intrinsic muscles of spine, diaphragm, pelvic floor) Fixators: All musculature of the hip especially the glute complex; Trunk Rotation. Semispinalis: The semispinalis is the most superficial of the deep muscles. Exhale as you rotate, feeling the ribs move down in and back to flatten with your abdomen. The trunk rotation exercise is a great way to help relieve back pain and tension. The supine trunk-rotation stretch is a good releasing exercise to help improve your ability to complete a stress-free backswing and follow-through in golf. Common trunk rotation drills like windmills, quadruped rotations, lunge + rotations, world’s greatest stretch, etc. There are two categories of anti-rotation exercises … Your abdominal region's connective tissue creates a diagonal bridge between your external oblique and the opposite inner thigh. The vast majority of trunk/torso rotation occurs in the thoracic spine (see thoracic rotation). ... Two muscles in the deep layer are responsible for maintenance of posture and rotation of the neck. That is the true function of the rotary muscles of the core – stability and prevention of rotation. Four muscles provide shape and movement to … Three muscles participate in the cooperative relationship known as the anterior oblique system. Contracting either external oblique produces contralateral rotation—i.e., contracting your right external oblique rotates your trunk to the left. can be very effective for improving thorax rotation IF AND ONLY IF YOU COORDINATE BREATHING TO MANAGE PRESSURE IN THE THORAX. The trunk rotation stretch can help relieve tension in your lower back.