Abstract: An exercise machine adapted to selectively provide either a constant resistance or an inertial resistance in response to a force. In one embodiment, a suspended weight is interconnected by a cable suspended from a frame either to a handle or to a heavy barbell. A force applied to the handle experiences constant resistance from the weight, and a force applied to the barbell experiences inertial resistance. In another embodiment, a heavy barbell is connected to a cable suspended by a frame and may be selectively connected to a suspended weight. A force applied to the barbell when the weight is not connected experiences constant resistance from the barbell, and a force applied to the barbell when the weight is connected experiences inertial resistance.

Abstract: A suit for use in combat type sports easily secured and removable for wearing by a user's body to protect same from damage by blows which may be struck by parts of another suit. The suit includes apparatus which completely encloses a user's body and has a generally non-flexible and preferably lightweight outer armor which is padded on the inside to absorb shock during use. A helmet is securely attached to an upper body armor so that the shock of a blow to the head area of a user will transfer to the bottom of the upper body armor and thereby eliminate any damage to the head. Lower arm components enclose the lower arms of a user and include portions which are gripped by the user's hands, and hence, the ends of these components which extend past the hands will generally make contact in punching another suited opponent during use. Separate components enclose and are adapted to provide maneuverability of a user's arms, legs, feet and waist or torso.