초록 ▼

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

A vertical jump exercise apparatus to be used to train and condition participants in sports demanding a high degree of vertical jumping ability. Elastic cords 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 a pivoted tracking assembly with pulleys which also serves as a force inbalance indicator for the elastic cords.

대표청구항 ▼

An exercise apparatus comprising as components: flat base means; harness means; elastic means for providing a plurality of forces opposing motion of said harness means away from said base means during kinetic exercise, said elastic means having a length whereby each of said forces is relatively cons

An exercise apparatus comprising as components: flat base means; harness means; elastic means for providing a plurality of forces opposing motion of said harness means away from said base means during kinetic exercise, said elastic means having a length whereby each of said forces is relatively constant over a predetermined range of movement of said harness means during kinetic exercise; tracking means comprising at least one pulley for turning said elastic means to a path generally parallel to said base means; and pivoting means for pivotally attaching said tracking means to said base means to maintain said elastic members on said path.