Растопыриваем пальцы при плавании

[vashu11]

Физическая интуиция давно уже подсказывала мне что при плавании пальцы надо немного растопыривать, но в обучающих видео для любителей про такие тонкости не упоминали. Немного покопал (на англ.) - так оно и есть

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[vashu11]

The fish kick, if done properly, is the fastest way for a human to swim. The technique requires a swimmer to lie sideways and wiggle her body in a fluid motion that mimics that of a minnow or an eel. At the 2000 Olympics, American swimmer Misty Hyman fish-kicked her way to gold in the 200-meter butterfly, beating out two heavily favored Australian swimmers.

In the video below, you can watch Hyman employ the fish kick at each turn. Susie O’Neill-an Aussie whose dominance earned her the nickname “Madame Butterfly”-stays with Hyman through the first 100. But when they reach the final turn, Hyman fish kicks back into a clear lead. O’Neill can’t recover.
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The fish kick is the Devils Hole pupfish of the pool, a rarely seen and fascinating specimen. It emerged in Sunday night’s 4-by-100 men’s freestyle relay, when the United States’ Ryan Held used the kick on his turn in the third leg of the race. But Held’s fish kick was an unusual sight in Rio. If it’s the fastest kick in the world, why don’t more swimmers do it?

For one thing, if a swimmer screws up the fish kick, he’s risking disqualification. Per the rules outlined by Fédération Internationale de Natation, the sport’s international governing body, swimmers attempting the fish kick after turns in downward events-the breaststroke, the butterfly, and the freestyle portion of the individual medley-must not rotate onto their backs, even by a few degrees. In the backstroke, the opposite mandate applies: Athletes who rotate toward their stomachs will be DQ’ed.

A second problem: The fish kick is supremely difficult to master. In addition to keeping their bodies rotated just so, swimmers must worry about veering away from the center of their lanes, since it’s pretty much impossible to keep your eye on the lane markings when you’re on your side.

A piece published in Nautilus in 2015 explains the physics. Like the dolphin kick, the fish kick takes place underwater, where drag is less of an issue. But the sideways fish kick has an advantage over its dolphin cousin, because the turbulence it creates on each side of the body reverberates sideways into the pool uninterrupted, rather than being stopped by the pool’s bottom or the water’s surface.
http://nautil.us/issue/25/water/is-this-new-swim-stroke-the-fastest-yet

When Hyman practiced the fish kick, she often surfaced 30 meters from the wall, which was illegal under the 15-meter rule. She managed to shorten it for her Olympic swim, but it took a lot of practice

Why have swimmers neglected the “fish kick” technique?
https://www.tandfonline.com/doi/abs/10.1080/24748668.2008.11868444

https://www.inverse.com/article/4369-swimming-s-big-secret-the-mysterious-fifth-stroke
The Mysterious Fifth Stroke

on back https://youtu.be/SZB68290nvQ?t=147
fastest https://www.youtube.com/watch?v=bGRl0k2qvhY
misty https://vimeo.com/131554771
https://www.youtube.com/watch?v=mkl3D7bVkIw
https://m.facebook.com/fishswimfaster/videos/-fish-kick-i-realized-when-i-was-editing-these-files-which-i-always-name-new-vid/1574504606230063/
https://youtu.be/DGw_fRWiNVw?t=138
https://www.youtube.com/watch?v=rGJdtoDKeds
https://www.youtube.com/watch?v=GBfS-7tC9bQ
fish kick https://www.youtube.com/watch?v=ZcGIh6WFN7E
drill https://www.youtube.com/watch?v=VtadiHtIU6A
https://www.youtube.com/watch?v=tA1VBOcGQpY
fish kick https://www.youtube.com/watch?v=GBfS-7tC9bQ

wiki https://en.wikipedia.org/wiki/Fish_kick