Where is your core?

The word “core” refers to the area of your body between your diaphragm and your pelvic floor. It includes all the joints of the lumbar spine as well as those of the low thorax (chest) and the pelvis.

Although all muscles of the body are often involved in stabilization, some muscles are better situated to be able to control a joint’s movement; these muscles are called “core muscles” or the “inner unit”. Every joint has an inner unit; the shoulder’s being the rotator cuff.

The inner unit muscles of the lumbopelvic region are the transversus abdominus, the multifidus, the diaphragm, and the pelvic floor. These muscles have attachments to the spine or the pelvis, and are therefore better able to stabilize than, for example, the erector spinae or rectus abdominus. As Diane Lee says, “collectively, the inner unit forms a corset around the lumbar spine and pelvis, forming the “circle of integrity”.

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Catherine D'Aoust at GAIA Adventures
http://www.gaiaadventures.com