Skateboarding is an action sport which involves riding and performing tricks using a skateboard. Skateboarding can be a recreational activity, an art form, a job, or a method of transportation. Skateboarding has been shaped and influenced by many skateboarders throughout the years. A 2002 report found that there were 18.5 million skateboarders in the world. 85 percent of skateboarders polled who had used a board in the last year were under the age of 18, and 74 percent were male.
Skateboarding is relatively modern. A key skateboarding maneuver, the ollie, was developed in the late 1970s by Alan “Ollie” Gelfand as a half-pipe maneuver. Freestyle skateboarder Rodney Mullen was the first to take it to flat ground and later invented the kickflip and its variations. Since the 1970s, skateparks have been constructed specifically for use by skateboarders, bikers and inline skaters.
Reference: Wikipedia Skateboarding