Single Leg Hip Hinge (Bodyweight) Single Leg Hip-Hinge, known also as Single-Leg Romanian Deadlift. Exercise that focuses the load on the hip extensors: Gluteus maximus and Hamstrings. The hip hinge is one of the fundamental movements of a lot of exercises. It’s a staple of deadlifts, squats, olympic lifting, and more. The target muscle is the gluteus maximus (colored red). The hamstring (dark-pink) assists in hip extension. In this exercise the spinal erectors stabilize the spine in static cont