The muscles gluteus maximus, gluteus medius, hamstrings, intrinsic core stabilizers are listed as underactive in which region?

• A. Underactive knee muscles
• B. Underactive LPHC muscles
• C. Underactive feet muscles
• D. Underactive shoulder muscles

Answer: (B)

Focus on how the body stabilizes movement from the core outward. The gluteus maximus and gluteus medius are the primary hip extensors and stabilizers, the hamstrings assist with hip extension and knee stabilization, and the intrinsic core stabilizers (the deeper abdominal and spinal muscles) support the lumbar-pelvic-hip area. When these muscles are underactive, the pelvis and lower spine lack stable control, so other areas (like the lower back or thigh muscles) have to compensate. This pattern is classified as underactive in the lumbar-pelvic-hip complex (LPHC). In short, these muscles belong to the LPHC region because they are key stabilizers of the pelvis and spine during movement.