ProPulse® Speed Trainers work by answering a simple question, “What do you do with your upper body when you run? Are you using your upper body to generate more power, efficiency,and balance? Or are you making your legs do all the work and 'carry' your upper body?"
Traditional running instruction does not teach you how to use your upper body to generate more power and greater efficiency. Your upper body (head, arms, hands, trunk) account for approximately 60% of your entire body, legs making up approximately 40%. Why wouldn't you put that 60% to work?
ProPulse® Speed Trainers teach you how to “Pulse" your arms in a downward motion as opposed to swinging your arms one at a time in an upward motion. This downward “pulsing" effect takes the energy from the upper body and transfers it through your lower body - decreasing the workload on your legs and increasing your power by giving you more efficiency and better overall balance.
The shifting weight inside the ProPulse® Speed Trainers teaches you how to perfect the “Pulsing" technique. The weight shifts upward as you move your arm down. You can launch into the your next stride by decreasing your time on the ground and synchronize your stride, so you can both hear and feel the technique taking effect. If it sounds right, it is right.