In 2025, some banned running shoes, particularly those with multiple carbon plates or excessive midsole height, could potentially provide a 2-4% performance enhancement compared to standard running shoes. These shoes, often exceeding the 40mm midsole height limit set by World Athletics, have been shown to improve running economy and speed. Studies show potential improvements of ...

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Link :
https://www.nextbigfuture.com/2025/05/banned-performance-enhancing-shoes.html