The New Gladiators (1984)

What happens when Italian guro maestro Lucio Fulci "borrows" one of the central premises from Frederik Pohl and C. M. Kornbluth's 1955 novel Gladiator-at-Law and turns it into a B-movie? You get 1984's I Guerrieri dell'anno 2072 (aka Warriors of the Year 2072, aka The New Gladiators). This movie was released in the U.S. by TROMA, which should tell you it's schlock. Suffer through the credits and you'll get to hear the film's opening exposition which sets the stage.

UPDATE: I found the trailer and posted that instead of just the movie's opening titles.