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outrigger ski
Outrigger skis are skis that are used by para-skiers to assist with balance, turn, control their speed, stop and amplify the direction of turns. They vary in size and height, and include different features. Depending on the total number of skis used by the skier, outrigger configuration is sometimes called "Three Track Skiing" or "Four Track Skiing". When falling, skiers are taught to move their arms to prevent falling on the outrigger and injuring themselves.
==Equipment use==
Outrigger skis were used on sleds during the 1960s as a way of keeping a traditional sled balanced by putting a third ski underneath the sled. Now, outrigger skis are skis that are used to help skiers balance, turn, control their speed and stop. They also help to amplify the direction of a turn initiated by shifts in the upper body.
In para-skiing, outrigger skis are an assistive device used by skiers with balance issues or amputations. They are used in both para-alpine skiing and para-Nordic skiing. The outrigger for para-skiing was first developed during the 1940s by Franz Wendel to enable him to ski following an accident that resulted in one of his legs being amputated. The origins of the outrigger for para-skiing connect to a crutch with a flip-ski attached to the end that was developed in Canada.
When a pair of outriggers are used for a skier with two skis, this is sometimes known as "Four track skiing". When a skier uses one ski and a pair of outriggers, this is called "Three track skiing."
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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