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US sprinter Trayvon Bromell. For the New Balance track shoes that Bromell will wear during the Olympics, the company turned to 3-D printing technology to test multiple configurations to improve traction and energy transfer. (AP)

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Dressed for success

High-tech Olympic wear can save vital seconds in Rio

WHEN seconds count, the right clothing matters for Olympic athletes competing in Brazil and competition has been hot between leading manufacturers for the Rio de Janeiro Games, which open on Friday.

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