Abstract: An apparatus for human exercise in certain configurations includes first and second foot pads attached to first and second guided carrier members, respectively. A first curved guide rail portion is coupled to the first guided carrier member, and prevents motion of the first guided carrier member except for translation along the first curved guide rail portion. A second curved guide rail portion is coupled to the second guided carrier member, and prevents motion of the second guided carrier member except for translation along the second curved guide rail portion. A first motion resistor is coupled to the first foot pad and opposes a translation of the first foot pad along the first curved guide rail portion. Each of the first curved guide rail portion and the second curved guide rail portion is curved away from an underlying ground plane, to define a distally increasing rail height.

Abstract: An apparatus for human exercise includes a first foot pad attached to a first guided carrier member, and a second foot pad attached to a second guided carrier member. Motion of the first and second guided carrier members is limited to linear translation along a longitudinal axis of a horizontal guide rail. First and second and third elastic members may be attached to and apply opposite elastic forces to the first and second guided carrier members along the longitudinal axis. A transverse frame member is fixed to the horizontal guide rail and is oriented horizontally and transverse to the longitudinal axis. A vertical frame member with a raised hand rail may extend from the transverse frame member. The first and second foot pads may be pivotably coupled to the first and guided carrier members by torsional elastic members.

Abstract: An apparatus for human exercise in certain configurations includes a first foot pad attached to a first guided carrier member. A first curved guide rail is coupled to the first guided carrier member. The first curved guide rail prevents motion of the first guided carrier member except for translation along the first curved guide rail. A weight stack includes a first plurality of weights coupled to a first cable. The first cable is also coupled to the first foot pad. A tension in the first cable may oppose a translation of the first foot pad along the first curved guide rail. A stationary foot platform is fixed to the apparatus between the first curved guide rail and the weight stack. The first curved guide rail is curved away from an underlying ground plane, to define a rail height that decreases towards the stationary foot platform.