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riverboarding
Riverboarding is a boardsport in which the participant lies prone on their board with fins on their feet for propulsion and steering. This sport is also known as hydrospeed in Europe and as riverboarding or white-water sledging in New Zealand, depending on the type of board used.〔(Extreme Dreams ) (dead link)〕〔(White Water Sledging ). Extreme Dreams〕 Riverboarding includes commercial, recreational and the swiftwater rescue practice of using a high-flotation riverboard, designed for buoyancy in highly aerated water.
== Origins ==
Riverboarding is believed to have originated in the late 1970s. It is claimed to have originated in France, where raft guides stuffed a burlap mail sack with life vests and went down rapids.〔(Frogz White Water Sledging )〕 Soon, riders adapted a personal submarine shell for their molds, and the plastic version of the riverboard was born. Sometime in the late 1980s, Robert Carlson began running rivers in California using an ocean bodyboard and ended up making his own board that was bigger and thicker and had handles. In 1986, Ged Hay began taking his body board down the Kawarau River near Queenstown in New Zealand while on his days off as a rafting guide.
European riders also developed a foam version (called a hydrospeed) of the plastic board to reduce weight and avoid injuring each other during collisions that sometimes resulted from one rider travelling downstream and another facing upstream while surfing a hydraulic. Today, homemade foam hydrospeeds are found primarily among European riders. A growing sport in North America, riverboarding has grown in popularity from media exposure and the emergence of commercial operators running riverboard trips.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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