An exercise machine (1) for developing motor abilities and muscular strength, of the type comprising at least one supporting frame (2), at least one flexible cable (4) wound on a plurality of pulleys (3a, 3b, 3c, 3d) rotatably supported by the frame (2) and connected to at least one resistant load (7), at least one grip element (5a; 5b; 5c) connected to the cable (4) and designed to be operated by a user in order to perform an exercise, the machine being characterized in that it comprises at least one return device (14), to which the ends (4', 4'') of the cable (4) are connected, said return device designed to return the cable (4) to the initial configuration after an exercise has been performed.