What is the primary movement during the concentric phase of the dumbbell Romanian deadlift?

The primary movement during the concentric phase of the dumbbell Romanian deadlift is hip extension. In this exercise, the concentric phase occurs as you lift the weight back up after lowering it towards the ground.

During the initial lowering phase, the hips are pushed backward to maintain a slight bend in the knees, and the emphasis is on hinging at the hips. When you begin to raise the dumbbells back up, the primary action is driven by the gluteal muscles and hamstrings extending the hips. This movement allows the body to return to a standing position while maintaining a neutral spine, emphasizing the posterior chain benefits of the exercise. Consequently, hip extension is crucial because it effectively engages these large muscle groups and contributes to strengthening and developing overall lower body strength.