What does Lower Crossed Syndrome (LCS) involve?

Lower Crossed Syndrome (LCS) is characterized by a specific pattern of muscle imbalances in the lower body. It involves weak muscles that are typically antagonistic to tight muscles that are often overactive. Specifically, in LCS, the muscles of the lower back and hip flexors (such as the iliopsoas) become tight, while the abdominal muscles and gluteus maximus tend to become weak.

This condition leads to an altered posture and can contribute to lower back pain and other musculoskeletal issues. The tightness in the hip flexors may lead to an anterior pelvic tilt, resulting in increased tension in the lumbar spine, while the weakness in the glutes and abdominals prevents proper stabilization and support.

The other options do not accurately describe LCS; the first option incorrectly suggests a balance of strong and flexible muscles, while the third discusses imbalances in arm strength, which is irrelevant to the lower body focus of LCS. The fourth option addresses core muscle overtraining, which does not encapsulate the core issue of weakness versus tightness seen in Lower Crossed Syndrome.