Steve Johnson, the chief executive of USA Cycling, said that Armstrong's return this year had directly affected the popularity of the sport in the United States.

斯蒂夫-约翰逊，美国自行车协会会长，说今年阿姆斯特朗的回归直接促进了这项运动在美国人气的提高。

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Created to be the most challenging race for professional cyclists in American history the USA pro Cycling Challenge is set to cover nearly 500 miles in Colorado.

美国职业自行车挑战赛是美国历史上为职业车手设置的最富有挑战性的赛事，该赛事全程500多英里(800多公里)在科罗拉多山间举行。

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In 2002, Ochowicz was elected to become president of USA Cycling, the sport's national governing body.

WSJ: New Twist in Armstrong Saga

But the USA Cycling test can't quantify an athlete's emotional readiness to re-enter the sport after a head injury.

WSJ: Cycling's Occupational Hazard

That position has been recently backed by USA Cycling, the official cycling organization recognized by the U.S. Olympic Committee.

CNN: August 21, 2012 -- Updated 0154 GMT (0954 HKT)