Specific machine for training the central part of the back, particularly suitable for the development of the thickness of this anatomical region. Adductor muscles of the shoulder blades such as rhomboid and medium trapezius, shoulder extensor such as large dorsal, large round and posterior deltoid, elbow flexor such as brachial and biceps are also involved in the movement. The independent levers allow monolateral and bilateral training in total safety; the central fixed handle creates a stable support base to effectively perform the monolateral exercise. The machine can also be equipped as an option with articulated and rotating handles, which allows a more natural grip and can be varied even during the movement. Features additional disk holders (Optional) illustrative chart with QR code linked to technical video Technical Info seat with gas assisted height adjustment physiological load curve independent levers: unilateral or bilateral exercise central support grip rotating handgri…