The cervical curvature forms as a result of lifting the head and the lumbar curvature forms as a result of walking.
2.
A more recent study from 2008 confirms that " ergonomically designed kneeling chairs set at + 20 degrees inclination do maintain standing lumbar curvature to a greater extent than sitting on a standard computer chair ".
3.
A 1989 study on a sample of 20 subjects concluded that the Balans chair promoted greater lumbar curvature than the " straight back chair " during relaxed sitting, typing, and writing, and that it could contribute to treatment of lower back injuries.
4.
X-rays are used to measure the lumbar curvature, bone scans are conducted in order to rule out possible fractures and infections, magnetic resonance imaging ( MRI ) is used to eliminate the possibility of spinal cord or nerve abnormalities, and computed tomography scans ( CT scans ) are used to get a more detailed image of the bones, muscles and organs of the lumbar region.
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