Mini Gym indicates that this success created a new approach to fast speed resistance exercise and many schools purchased the leaper and experienced huge improvement from their players. Mini Gym worked tirelessly to produce leaper products when almost every High School and University ordered a leaper during the 70s and 80s. From basketball to most athletic sports, the leaper has been given the credit for revolutionizing the quickness of players' reflexes and dunking that exists in the sport today. Super Mini Gym and the leaper train athletes in specific ways and there is no substitute for the fast speed isokinetic exercise that develops white quick twitch muscle fibers achieved on the leaper and Mini Gym. An important advantage with the isonkinetic exercises for legs is that athletes are much stronger in their extended range than in the pull squat position because of skeletal leverage. With the leaper from Mini Gym, the user can move through this range of motion quickly and safely.

The leaper is constantly adjusting to the user since it makes the exact proportionate resistance with every rep. Tiring exercisers can safely work the extended range with each succeeding rep as they begin to experience fatigue. Mini Gym suggests that big improvements have been made with the design of an LCD readout device for the new model Super II Mini Gym and the leaper. Mini Gym indicates that 50,000 Mini Gym and 10,000 leaper products have been sold worldwide and the new LCD models measure power as each rep is exercised, count reps, provide time reading for exercise time, measure work in foot pounds of all reps and provide an average work number for all reps completed. The installation of a strain gauge more recently accurately measures the range of motion for therapy evaluation which helps with insurance claims.