Abstract: A device for aerobic exercise characterized by increased user comfort, especially during extended periods of use which comprises an elongate frame, a housing enclosing the frame, a stress imposing pedal-driven fan carried by one end portion of the frame and a user supporting and positioning seat carried by the other end portion of the frame opposite the fan and comprising a seat portion inclined from front to rear at a predetermined acute angle to the horizontal, and a backrest portion inclined at a predetermined acute angle to the vertical, with at least the backrest portion having ventilation openings therein which communicate with the front and rear surfaces of the backrest portion.

Abstract: Apparatus and method for exercising the abductor or adductor muscles in which the legs of the user are moved away from and toward one another and in which resistance to leg movement varies in predetermined relationship to leg movement. The apparatus is connected through link structure to accommodate rotation of the legs relative to the torso supporting structure. The rotations of the legs, both away from and toward each other, of a user is resisted by weights that are raised and lowered.

Abstract: Apparatus and method for exercising torso rotation muscles of a person and in which a user's body is supported in a generally upright seated position, upper and lower torso portions are engaged so as to restrict movement of the user's body to rotary movement of the upper torso relative to the lower torso about an axis extending longitudinally of the user's body, and force is imposed to resist such movement.

Abstract: An exercising apparatus in which the body is supported while being restricted to rotary movement of upper and lower torso portions one relative to the other. Restriction of movement isolates the abdominal muscle group while accomplishing "full range" exercise as herein defined.The apparatus includes an upper torso engaging backrest and a lower torso engaging backrest and seat so that the user is supported in a generally seated position. Weights and a variable cam provide a variable resistance force to pivotal movement when the upper torso engaging backrest and the lower torso engaging backrest and seat are moved toward and away from each other.