NOVELTY - The device (1) has a cylinder device(10) supplied with pressure or a regulated electric motor by which training force for a user (B) of a training device (T) is generated. An outlet of the cylinder device or the electric motor is connected with an end of a force transfer element (2), and the user of the training device is supplied with the training force by the transfer element. The cylinder device exhibits a thrust cylinder (11) or a pneumatic cylinder supplied with excess pressure. An expansion tank is arranged between an excess pressure production unit (15) and a piston chamber (12).    USE - Device for production of training force for a user of a training device (claimed) for rehabitation of astronauts or cosmonauts in a space station to counteract amyotrophia.    ADVANTAGE - The outlet of the cylinder device or the electric motor is connected with the end of the force transfer element, and the user of the training device is supplied with the training force by the force transfer element, so that a defined training load is generated on the user of the training devices in a simple manner, thus providing the device with compact design, while utilizing the device in a simple and rapid manner. The force produced by the cylinder device or the regulated electric motor runs constantly or after a predetermined core line, so that the defined training force is adjustable and tunable to individual needs of the user, in a simple manner.    DETAILED DESCRIPTION - The regulated electric motor is formed as a force-regulated linear motor. An INDEPENDENT CLAIM is also included for a training device.    DESCRIPTION OF DRAWING(S) - The drawing shows a schematic representation of a device for production of training force and a training device.    User (B)    Training device (T)    Training force production device (1)    Force transfer element (2)    Cylinder device (10)    Thrust cylinder (11)    Piston chamber (12)    Piston (13)    Piston rod (14)    Excess pressure production unit (15)