An exercise apparatus includes left and right rigid connector links having
first portions rotatably connected to respective cranks, second portions
constrained to move in reciprocating fashion, and third portions
configured to support a person's feet. The resulting assembly links
rotation of the cranks to movement of the foot supports through generally
elliptical paths. The connection points may be moved relative to one
another and/or a supporting frame to adjust the size, shape, and/or
orientation of the paths.