Relationship between lordosis and kyphosis of advanced bodybuilders

Abstract

The purpose of this work is to provide an overview of the postural system and the field that studies body posture known as postural science. Posture is known to be a set of interactions between the musculoskeletal system and the afferent and efferent pathways of the central nervous system, and its main role is to keep your body in a state of musculoskeletal balance and protect the supporting structures against damage or progressive deformity in humans. The body balances three physiological curvatures of the spine: cervical lordosis, anterior convex lumbar kyphosis, and anterior concave dorsal kyphosis. These curves are established and stabilized after about 5-6 years of foot proprioception maturation. The three curves maintain balance and support and resist longitudinal stresses (1-4). The most important of these is the lumbar lordosis, which is concave in the back and consists of 5 vertebrae starting from the sacrum. The thoracic curve consists of 12 vertebrae and forms an anterior depression called the kyphosis. 7 vertebrae of the cervical spine form the cervical lordosis in the posterior concavity (5, 6). Full development of postural function occurs at about 11 years of age and then remains stable until about 65 years of age. Spinal deviations are associated with various spinal diseases such as spondylolisthesis, herniated discs, specific lesions with acute and chronic characteristics, increased intradiscal pressure, viscoelastic deformity, and low back pain. A sagittal curvature outside the normal range results in decreased functional capacity and perceived quality of life. In addition, spinal curvature is associated with slow walking, poor balance, and a higher risk of falling. On the other hand, regular and consistent exercise can affect sagittal spinal curvature.