What are some differences between isotonic exercises versus isokinetic exercises?

Types of exercise: Isotonic= if you push against something that is immovable you are experiencing isometric contractions. This may also be called static tension; isokinetic = exercises used in therapeutic settings with a device/ machine to help control the speed of the exercises. Read more: http://www.Livestrong.Com/article/434761-isotonic-isometric-and-isokinetic-exercises/#ixzz2nrc5e3sa.