Sportspersons wishing to use the best possible equipment and exercises to improve height and speed of vertical jumping and to develop muscle strength, quicker reflexes and fitness to ensure less chance of injury will be delighted with Mini Gym, accessories and instructions for vertical jumping routines. Mini Gym advises that regular vertical jumping routines 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 and a speedier recovery when they do occur. Athletes who do a lot of running and vertical jumping during a sports match, such as basketball and volleyball, can go onto the Mini Gym site and search and browse the diagrams that show details of how the system works. Mini Gym suggests that the Isokinetic principle of the vertical jumping routine to enable sportsmen to jump higher and faster has proven itself by helping to develop more strength and rehabilitate injuries more quickly and easily. Sportsmen of many varieties are using the Mini Gym vertical jumping system to great effect.

The Isokinetic exercises developed for improved vertical jumping 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, and the vertical jumping workout regimen provided by Mini Gym is of huge benefit. Mini Gym offers the equipment and the exercise instructions for vertical jumping routines for athletes who need to be able to perform reflexive vertical jumping on a basketball or a volleyball court. It is now almost 40 years since the first Mini Gym was introduced and 50,000 have been sold worldwide. Recently, Mini Gym installed a strain gauge device which accurately measures the range of motion of vertical jumping for therapy evaluation purposes. Mini Gym explains that 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's exercise routine for improving vertical jumping ensures 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 athlete move the weights speedily through the range. Mini Gym indicates that there is no movement in an Isometric contraction as the muscles contract against an immovable resistance. The Mini Gym exercises for vertical jumping 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. Vertical jumping will show improvement in the low-speed strength category and will mainly affect the fibers active at the one shortening length exercised.