Williams Flexion Exercises

Williams flexion exercises (WFE) — also called Williams lumbar flexion exercises or simply Williams exercises — are a set or system of related physical exercises intended to enhance lumbar flexion, avoid lumbar extension, and strengthen the abdominal and gluteal musculature in an effort to manage low back pain non-surgically. The system was first devised in 1937 by Dr. Paul C. Williams (1900-1978), then a Dallas orthopedic surgeon.