Abstract: Exercise apparatus has a handle attached to a cable which is extended when tension on the cable exceeds a preset value. A release allows the cable to be moved effortlessly to the starting position of the exercise. The cable is retracted when the cable is slack, and the cable is clamped at a desired position and a signal emitted when the tension in the cable exceeds a preset value. The exercise apparatus has an isometric mode which allows a force to be applied to the cable without motion of the cable.

Abstract: An exercise apparatus comprising structure for performing exercises which includes a handbar for being grasped by the hands of a user, a bar for restraining the feet of the user and a padded member for restraining the thighs of the user, the padded member being adjustable in location relative to the structure for restraining the feet of the user such that said structure allows the user to stress the user's muscles in the range of motion where the greatest stress is imposed by an activity such as sprinting.