How is lumbar lordosis best characterized?

Lumbar lordosis is best characterized by an exaggerated inward curve of the lower back, which results in the buttocks protruding outward while the chest and abdomen are pushed forward. This posture creates a distinct arch in the lumbar region, often giving it a pronounced look. When someone has lumbar lordosis, the alignment of their spine reflects this curvature, and it typically manifests in a stance where the hips tilt forward, enhancing the arch in the lower back.

In this context, the option that describes the butt out with an arched back and leaning chest/abdomen out accurately captures the essence of lumbar lordosis. This condition is common and can occur due to various factors, including muscle imbalances, lack of core strength, or prolonged poor postural habits. Understanding lumbar lordosis helps in assessing spinal health and designing appropriate exercise and rehabilitation programs.