The HD SPARC is the ultimate performance trainer for explosiveness and power with no impact stress on the knees or joints. It requires a high-knee and glute driving force which is ideal for developing maximum force and sprint speed.
BIOMECHANICAL REFINED
The HD SPARC engages the glutes and hamstrings to create downward-driving force. This translates to acceleration, speed, and explosive training. 10 resistance levels allow alternate workouts to emphasis speed or power intervals.