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An engineer adjusts test marks on an Adidas running shoe at the Adidas innovation laboratory in Herzogenaurach May 7, 2012. U.S. market leader Nike and German rival Adidas are locked in their
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![An Adidas running shoe is placed on a surface with high speed cameras for testing at the Adidas innovation laboratory in Herzogenaurach May 7, 2012. U.S. market leader Nike and German rival An Adidas running shoe is placed on a surface with high speed cameras for testing at the Adidas innovation laboratory in Herzogenaurach May 7, 2012. U.S. market leader Nike and German rival](https://c8.alamy.com/comp/2D0R9AE/an-adidas-running-shoe-is-placed-on-a-surface-with-high-speed-cameras-for-testing-at-the-adidas-innovation-laboratory-in-herzogenaurach-may-7-2012-us-market-leader-nike-and-german-rival-adidas-are-locked-in-their-own-olympic-battle-to-boost-athletes-performance-and-squeeze-maximum-value-out-of-the-london-olympic-games-the-games-provide-a-showcase-for-new-fashions-and-advances-in-technology-which-sportswear-suppliers-hope-will-drive-sales-at-a-time-of-economic-turmoil-in-many-of-their-markets-according-to-news-reports-on-june-20-2012-picture-taken-on-may-7-2012-to-match-story-oly-bra-2D0R9AE.jpg)