ET Training Systems was founded as a research & development corporation to develop, design, manufacture and sell sports training aid products. Our company goal is to be the foremost authority on sports training aid devices in the world. Our products are designed for home use, travelers, professionals and amateurs of all skill levels. The dForceTrainer, is the ultimate sports training aid product that has completely revolutionize the process of developing high performance sport specific fast twitch muscle fibers and athleticism for a variety of sports. The dForce Trainer is a versatile training aid that allow you to emulate your sport specific mechanics against dynamic directional resistance to develop the fast twitch muscles fibers for your sport specific movements.