Mini Gym offers vertical jumping exercise equipment and instructions for athletes who need to be able to make high jumps in their chosen field. It is now almost 40 years since the first Mini Gym was introduced and 50,000 have been sold worldwide. Recently, Mini Gym has added a strain gauge which accurately measures the range of motion of vertical jumping exercises for therapy evaluation. The Isokinetic or vertical jumping exercises provided with the help of the Mini Gym can also be used for rehabilitation exercise and the strain gauge's accurate measuring documentation helps athletes with insurance claims and the justification of rehabilitation exercises. At any time athletes playing basketball or volleyball need to warm up leg muscles the vertical jumping exercises provided by Mini Gym are of huge benefit. The resistance provided by weight and friction brakes have been the conventional means of Isotonically loading a contracting muscle to exercise.

Because of skeletal leverage, in most range of motion movements, the middle one-third range is normally twice as strong as the weakest third of the range. Mini Gym vertical jumping exercises ensure that the load is limited to the greatest amount that can be moved at the weakest joint angle. Mini Gym advises that this tends to let the vertical jumping exercises user move the weights speedily through the range. Sportspersons wishing to use the best vertical jumping exercises and equipment to develop muscles and fitness to ensure less chance of injury will be delighted with Mini Gym accessories and instructions for vertical jumping exercises. Mini Gym advises that vertical jumping exercises will keep leg and arm muscles in a flexible condition and should help extend the life of an athletic career with fewer of the usual injuries. Sportspersons wishing to use the best vertical jumping exercises and equipment to develop muscles and fitness and quicker reflexes to ensure less chance of injury will be delighted with Mini Gym, accessories and instructions for vertical jumping exercises. Mini Gym advises that vertical jumping exercises will keep leg and arm muscles in a flexible condition and should help extend the life of an athletic career with fewer of the usual injuries. Basketball and volleyball sportsmen and women can go onto the Mini Gym site and view the diagrams that show details of how the system works.

Mini Gym vertical jumping exercises enable sportsmen to jump higher and faster and the Isokinetic principle has proven itself by helping to develop more strength and rehabilitate injuries more quickly and easily. Mini Gym indicates that there is no movement in an Isometric contraction, as the muscles contract against an immovable resistance. The Mini Gym vertical jumping exercises, as detailed on the website, show that resistance becomes a function of the force applied and the muscles develop near maximum tension with no discernable joint capacity of the muscles in a static position. The vertical jumping exercises developed for sportsmen and women will show improvement in the low-speed strength category and mainly affects the fibers active at the one shortening length exercised.