Developed and hosted by resistance training expert Everett Aaberg, the "Resistance Training Instruction DVD Series" guides trainers through the steps of instructing clients in resistance training. Since the hip's primary function is to work with the knee and ankle during compound movements, numerous variations of squats, presses and lunges are presented. Several exercises that isolate lower-body movements are also included, as these more specific exercises may be equally important for accomplishing a variety of goals.