Dancesport denotes competitive ballroom dancing, as contrasted to social or exhibition dancing. In the case of wheelchair dancesport at least one of the dancers is in a wheelchair. Dancesport events are sanctioned and regulated by dancesport organizations at the national and international level, such as the World DanceSport Federation. The name was invented to help competitive ballroom dancing gain Olympic recognition. The physical demand of dancesport has been the subject of scientific research.