Abstract: Workout equipment includes a frame and a movable arm pivotally connected to the frame, the movable arm having a first end and a second end. A movable load unit is supported by the movable arm and a load transferer is configured to move the load unit along the movable arm. The movable arm includes a first guide and a second guide, the load unit is supported by the first and second guides and the load transferer includes a locking device for locking the load unit on the first and second guides. The load transferer includes a threaded rod having a first end and a second end, the threaded rod being parallel to the first and second guides. The load unit has a threaded aperture through which the threaded rod projects and the load unit includes weight plates connected together, each weight plate having a hole creating the aperture.

Abstract: A spring articulation structure particularly for play, fitness training and sports instruments, said structure comprising a core element (1) supported in between two rubber rings (2) and provided with a shaft element (5) fitted in said core element; a shell compactly surrounding the core element and the rubber rings and attached to a bottom plate (9), the top part (3′) of said shell being in the middle provided with a aperture (8) with a downwardly narrowing conical surface (7) for the shaft element (5); and a cylindrical element (4) resting on top of the top part (3′) of the shell and surrounding the shaft element (5).