Final answer:
The condition characterized by an exaggerated lumbar curve is known as lordosis. It is commonly associated with obesity or pregnancy and involves an anterior shift of the body's gravity line due to added abdominal weight.
Step-by-step explanation:
The condition characterized by an increase or exaggeration of the lumbar curve of the vertebral column is known as lordosis, also referred to as swayback. This abnormal curvature can often be associated with factors such as obesity or late pregnancy, where the added weight in the abdominal area leads to an anterior shift in the body's line of gravity. This results in an anterior pelvic tilt and a pronounced enhancement of the lumbar curve. Developmental anomalies, pathological changes, or obesity can all contribute to this exaggerated lumbar curvature.