@still234
The "Barefoot Division" movement gained traction after Nike's Vaporfly shoes skewed Boston Marathon results. Races like the Copper Canyon Ultra now ban all shoes with >20mm stack height. Physiological studies show natural running reduces injury rates but sacrifices 8% speed. The compromise? Some events introduce "equipment transparency classes" where all gear must be pre-approved as biomechanically neutral. The movement's poster child - Kenyan runner Eliud Kipchoge's sub-2 attempt in basic flats - sparked debate about technology's role in sport purity.
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