Roller skating is the traveling on surfaces with roller skates. It is a form of recreational activity as well as a sport, and can also be a form of transportation. Skates generally come in three basic varieties: quad roller skates, inline skates or blades and tri-skates, though some have experimented with a single-wheeled "quintessence skate" or other variations on the basic skate design. In America, this hobby was most popular in the 1970s and the 1990s.
Sports entertainment is a type of spectacle which presents an ostensibly competitive event using a high level of theatrical flourish and extravagant presentation, with the purpose of entertaining an audience. Unlike typical athletics and games, which are conducted for competition, sportsmanship, exercise or personal recreation, the primary product of sports entertainment is performance for an audience's benefit, thus they are never practiced privately. Commonly, but not in all cases, the outcomes are predetermined; as this is an open secret, it is not considered to be match fixing.
Events which fall under the classification of sports entertainment are often considered to be low brow forms of entertainment.
Roller skates are devices worn on the feet to enable the wearer to roll along on wheels. The first roller skate was effectively an ice skate with wheels where the blade goes. Later the "quad" style of roller skate became more popular consisting of four wheels arranged in the same configuration as a typical car.