Muscle exercise device offering a differential of the load between the modes which are concentric and eccentrics exercise.

摘要

The present invention relates to an apparatus for the development of gymnastics or rehabilitation comprising a chassis (1) and at least one element intended to be applied with respect to the chassis (1) by a user of the apparatus according to an outward and return movement which makes it possible to apply successively muscles or muscle groups in the eccentric and concentric, the apparatus being such that it makes it possible to work with a load in the eccentric greater than the load in a concentric. According to the invention, the load in one of the two modes being ensured by weight, selected by the user in a stack of weight (2) and carried by a support (3) fixed to the element driven by the user in order to be mobilized vertically, at least one pneumatic jack (5,6) operating in all-or-nothing mode is the difference in pressure between the embodiments which are concentric and eccentric, the jack (5,6) being intended to be actuated by an actuator to the hand or foot which is accessible to the user to each time that - it repeats the movement.