Sprint Coaches use Resisted Running Workouts to Increase Speed and Strength
A small variable muscle control system invented in the late 1960s is one of the best-choice systems due to its timeless portable, durable and affordable design. The unquestioned methods as resisted running and the 10/12 isometric & concentric max-rep contraction used by high-level coaches make it irreplaceable for Speed, Fitness and Strength Training. It has its unique applications in sports specific, foundational, recreational and competitive training settings. An Olympian Level Sprint Tool for Home Workout.