The Donley Hip Spin is an excellent device for enhancing rotational movement for athletes in power sports such as Baseball, Golf, Lacrosse, and Tennis. Efficient hip rotation is crucial for optimizing force transfer from the lower to the upper extremity. Developed by noted Physical Therapist Phil Donley, this tool facilitates correct hip turn and weight shift through assisted and resisted movements. The Donley Hip Spin is used while performing athletic movements (throwing, swinging, striking, etc.) at varying speeds, including duplicating the targeted sports skill at full intensity. In addition to focusing on increased range of motion and velocity, the device can aid the athlete's understanding of how the pelvic loading/unloading process feels when transferring energy through the kinetic chain.