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Welcome to Nat Geo Your Shot: National Geographic’s global community for aspiring visual storytellers. Find the community on Instagram @NatGeoYourShot and follow along for hashtag challenges, tips, ...

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Motion Analysis Laboratory, Department of Human Physiology, University of Oregon, Eugene, OR, USA Li-Shan Chou, Department of Human Physiology, 1240 University of Oregon, Eugene, Oregon 97403, USA; ...