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, distal end
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.