Which innovative footwear technology was temporarily banned by World Athletics (formerly IAAF) in 2020 for potentially providing an unfair advantage in marathon competitions?

The world of sports footwear has evolved dramatically through technological innovation. Modern athletic shoes are sophisticated products engineered with advanced materials, biomechanical research, and sustainability considerations. This poll tests your knowledge about a significant product design breakthrough that changed competitive running and sparked controversy in professional sports.

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• Nike's ZoomX Vaporfly with carbon fiber plates
• Adidas Boost foam technology
• Under Armour's HOVR energy return system
• Brooks DNA AMP responsive cushioning

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