Abstract: The present disclosure relates to an exercise device comprising a pedal assembly coupled to a braking device. The exercise device comprises a housing, through which a main transverse axle extends and which is arranged at a height of between 120 and 170 mm from the bearing surface on the ground, the main axle being coupled at either side of the housing to a disc-like plate that supports an eccentric transverse axle, the eccentric axles being orientated in a diametrically opposed manner relative to the main transverse axle, each of the eccentric axles being articulated relative to a connection piece with a pedal formed by a plate that is articulated relative to the connection piece by a pivot that is parallel with the longitudinal axis of the plate in order to allow the plate to move between a horizontal active position and a storage position in which it is folded against the vertical face of the housing, the main axle driving a flywheel received in the housing.

Abstract: A variable diameter wheel comprises a central hub, a peripheral band formed by a plurality of arcuate segments, each one of the arcuate segments being linked to the hub, wherein the hub comprises radial guide means for sliding retractable radial arms, each one of the retractable radial arms being secured to the distal end thereof of one of the arcuate segments, the opposing end being provided with a connection member with a mobile plate coaxial with the hub and in relative rotation with respect to the hub, the mobile plate having curved guide areas, each one of the connection members cooperating with one of the arms in order to control the linear and radial movement of the proximal end of the corresponding arm.

Abstract: A variable diameter wheel comprises a central hub, a peripheral band formed by a plurality of arcuate segments, each one of the arcuate segments being linked to the hub, wherein the hub comprises radial guide means for sliding retractable radial arms, each one of the retractable radial arms being secured to the distal end thereof of one of the arcuate segments, the opposing end being provided with a connection member with a mobile plate coaxial with the hub and in relative rotation with respect to the hub, the mobile plate having curved guide areas, each one of the connection members cooperating with one of the arms in order to control the linear and radial movement of the proximal end of the corresponding arm.