Patent ID: 7458918

Claim:
An exercise apparatus comprising: a stationary frame, a horizontal support member operatively connected to said frame; a sub-frame selectively movable fore and aft relative to said horizontal support member; a seat; and, a back support said back support comprising a back support frame having a top, a bottom and two lateral sides extending between said top and said bottom said back support frame, said top, said bottom and said two lateral sides defining an opening, said back support frame having a body support integrally formed with said back support frame, said body support formed by a lower arcuate portion of each of said two lateral sides; and, a mesh fabric membrane operatively connected to a carrier said carrier operatively connected to said back support frame to cover said opening of said back support, same mesh fabric membrane having a first side and a second side; wherein said sub-frame further comprises: a horizontal bracket, wherein said seat operatively connects to said horizontal bracket, said horizontal bracket adapted to be selectively movable relative to said horizontal support member; and, an upwardly extending member, wherein said back support operatively connects to said upwardly extending vertical member; wherein said horizontal support member further comprises a plurality of holes defined therein, said horizontal bracket having at least one hole defined therein, wherein a pin is adapted to pass through the hole of the horizontal bracket and one of the holes of the horizontal support member to selectively secure said sub-frame to the horizontal support member; wherein said upwardly extending member has a bore defined therein, said upwardly extending member also having at least one sidewall with a plurality of holes defined therein; wherein said back support further comprises an adjustment mechanism operatively connected to said back support frame, said adjustment mechanism adapted to move said back support frame relative to said upwardly extending member such that the back support is positioned to a preferred location to provide support to an user's lumbar area, said adjustment mechanism being in a spaced relationship with said second side of said membrane such that air can circulate there between, said adjustment mechanism having a plate, a polygonal member attached to said plate, and a pin extending through said polygonal member and one of said plurality of holes of the upwardly extending member such that the back support is adjustably movable along said upwardly extending member.