This machine allows training all the muscles of the upper back without the characteristic overloads of free-loading movements. The adjustable anatomical support avoids uncomfortable pressure on the sternal area. More advanced exercises can be performed by detaching the chest from the support and on a single limb, thus intensifying the stimulus on the stabilising muscles of the trunk and lower limbs. Variable grips also allow the arm flexor muscles to be stimulated in great synergy, avoiding unpleasant overloading in subjects with imbalances in the elbow joint.