Invented by Aleksey Lukyanov, the devices resemble a propeller screw with pedals.
https://youtu.be/rxM3-l8BsA4
Athletes in Russia test out new device to make them swim faster
rokur
Production engineer and certified swim coach. Full-time IT consultant, spare-time swimming aficionado. 2 sons, 2 daughters and a wife. President of the Faroe Islands Aquatics Federation. Likes to run :-)
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