Isokinetic Muscles Strength Training Isokinetic muscle strength training is currently the safest, most effective and most human-like muscle training method in clinical research globally. Special equipment is used to keep the speed constant, and resistance changes along with the amount of force applied by the user. No matter how big or small the force is during exercise, the speed of the movement remains the same. It’s the best exercise equipment for elderly and sitting exercise equipment for seniors.