sentences:  Specialized shift levers (known as bar-end shifters) do exist that can be installed on some triathlon bars so that they can be reached without moving the hands from the aerodynamic position.The complementary brake levers in this handlebar configuration are placed in the ends of the accompanying pursuit bars.Aero bars are a recent addition to road racing time trials, with Greg LeMond first using them in the 1989 Tour de France.