초록 ▼

A vertical jump exercise apparatus may be used to train and condition participants in sports demanding a high degree of vertical jumping ability. Elastic codes fastened to the waist of the user provide a nearly constant resistive force, thereby simulating increased body weight to strengthen leg musc

A vertical jump exercise apparatus may be used to train and condition participants in sports demanding a high degree of vertical jumping ability. Elastic codes fastened to the waist of the user provide a nearly constant resistive force, thereby simulating increased body weight to strengthen leg muscles and to improve motor reflexes. Generation of the nearly constant force is accomplished by directing one or more of the elastic cords beneath or away from the exercise area, thus allowing use of an increased length of cord. Directional control for the jumper, cord following to prevent fouling of the cord, and reduced friction are provided by movable tracking assemblies that may pivot or move linearly and may be provided with pulleys. The tracking assemblies may also serve as force imbalance indicators for the elastic cords.

대표청구항 ▼

An exercise apparatus comprising: (a) base means for forming an exercise area in which vertical jumping exercises may be performed; (b) plural elastic members for providing a nearly constant resistive force to jumping exercises performed in said exercise area, said force providing elastic members ha

An exercise apparatus comprising: (a) base means for forming an exercise area in which vertical jumping exercises may be performed; (b) plural elastic members for providing a nearly constant resistive force to jumping exercises performed in said exercise area, said force providing elastic members having a direction opposite to the direction of the jumping exercises; (c) tracking means for directing said elastic members on a path away from said exercise area; and (d) mounting means for movably attaching said tracking means to said base means to maintain said elastic members on said path.