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
connected to respective foot supports. Intermediate links are also
interconnected between respective cranks and respective foot supports.
The resulting assembly links rotation of the cranks to movement of the
foot supports through generally elliptical stepping 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.