Does a training device need to be big?

The ISOKINATOR provides your musculature with the same training resistances used for large fitness studio equipment. For this reason, an ISOKINATOR, despite its compact design, can obtain the same training success that you get by working out on large machines and lifting dumbbells. Your muscles don’t care where the training resistance comes from. It simply has to be there. Muscle building begins at a muscle contraction rate of 50% and slow, 2-second movements.