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Aiko Uemura
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The start of the swimming phase of a ironman triathlon in Frankfurt, Germany. (extreme sports)
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Aiko Uemura
Aiko Uemura Japanese skier Aiko Uemura competing in the freestyle skiing women's moguls World Cup event in Åre, Sweden, March 7, 2008.

extreme sports

recreation
Also known as: action sports, alternative sports
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Britannica Editors
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extreme sports, sporting events or pursuits characterized by high speeds and high risk. The sports most commonly placed in this group are skateboarding, snowboarding, freestyle skiing, in-line roller-skating, street lugeing, and BMX and mountain biking. Typically, extreme sports operate outside traditional mainstream sports and are celebrated for their adrenaline-pumping thrills. Racing and acrobatic competitions for motorcycles and snowmobiles are also often classified as “extreme,” and the term can be stretched to include such daring pursuits...

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