Volleyball variations of beach volleyball. As beach volleyball took volleyball outdoors, indoor sand volleyball takes beach volleyball indoors. In the United States, a growing number of colleges are now considering switching from hard court indoor volleyball to sand court indoor volleyball. The biggest reason for the possible change is the reduced rate of injury of players. Secondary reasons are: 1) bad weather doesn't cancel play, something that commonly happens with beach volleyball; 2) it is thought to make the game more appealing to spectators since sand courts do not require players to wear knee pads or shoes. Indoor sand volleyball teams vary
Women's professional sports The Women's Professional Volleyball Association was established in 1986. The association organized professional 6-player indoor volleyball leagues and beach volleyball leagues, such as Budlight Pro Beach Volleyball League in 1997, in which 4 teams participated. It dissolved in 1997.<br>Major League Volleyball, a professional league, operated from 1987 to 1989. Motorsport organizations allow men and women to compete on equal foot. Eight women qualified to the Indianapolis 500 formula race: Janet Guthrie (9th in 1978), Lyn St. James (11th in 1992), Sarah Fisher, Danica Patrick (3rd in 2009 y 4th in 2005), Simona de Silvestro, Pippa Mann, Milka Duno and Ana