Final answer:
Lumbar lordosis is a condition characterized by an excessive inward curvature of the lumbar spine. It is generally said to be reduced by 20-25 degrees, but the reduction can vary depending on how a person sits.
Step-by-step explanation:
Lumbar lordosis is a condition characterized by an excessive inward curvature of the lumbar spine, which is the lower portion of the spine. It is also known as swayback.
While it is difficult to quantify exactly how much lumbar lordosis can be reduced, it is generally said to be reduced by 20-25 degrees. However, it is important to note that the reduction in lumbar lordosis can vary depending on how a person sits.