i saw a trailer for the new Harry Potter film today. there's a sequence where he grows gills and fins and swims underwater. he swims with his arms by his side. so there you go... that's what Harry Potter chooses to do. 
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better to be completly streamline or save a little oxygen?
- Thread starterAquatic_Being
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Thread Status: Hello
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Alun said:i saw a trailer for the new Harry Potter film today. there's a sequence where he grows gills and fins and swims underwater. he swims with his arms by his side. so there you go... that's what Harry Potter chooses to do.
Ha ha ha. Now, I feel enlightened. Can you let me know where to get some gamma irradiated vitamin pills, also ? :duh
I saw the film late last night, loving Harry Potter has always been this English Literature students dark secret! An hour under the water without feeling the cold, seeing perfectly without a mask, and fins of my very own. No wonder I'm tempted to believe that Hogwarts exists and that my letter went astray..
Grace
Grace
Dont look for guidance from the record holders. Look to your own body. Try doing 50m dynamics with arms in perfect style ie out front and hugging the head. Do 8 on 2:30 repeats. Check your contractions or comfort levels and apnea times. Next day try the same with arms by your side. In my experience, your apnea times will be extended, you will have contractions and discomfort. Because drag increases substantially with even small increases of speed and therefore effort also increases, you need to find the balance where you can give the most efficient effort. Not too slow, unless you are one of those people who rely on breath hold ability rather than style. Not too fast, unless you are one of those with a rubbish static but great style. Lazy perfection with relaxed form.
Rafa, you seem to be making use of both slow and fast techniques when they matter most (ie slow and relaxed/not streamlined while the dive response is weak and establishing and then fast and more tense/streamlined after 100m when the dive response is strong) ..... sounds like a good approach to me as long a you surface slowly!!
No, he does not. At least not in competitions. Check out some of his videos, or those of Stephan Mifsud (another bi-fin recordman). You can find some of their clips in my video collection
So far nobody has mentioned "Total Immersion" by Terry Laughlin with John Delves. Laughlin's approach to training and coaching swimmers is that slippery and streamlined will always win out, once you learn to be really streamlined. His model, Alexander Popov, was a really fantastic Olympic sprinter, who still holds one world record. Popov practiced slowly, and often for less than an hour a day while training for the Olympics. Part of this discussion. Based on the Total Immersion model, my guess is that a lot of divers haven't been trained to be really streamlined, and that even the best could be better with streamlining. Just my guess.
Howard
Howard
That's a valid claim for swimming (or for fast freedivers), but not generally for freediving - as already explained in this thread, the muscular effort or tension needed to keep you in perfectly streamlined position increases the oxygen consumption, so you have to find a trade off between the streamlines and relaxation. While the oxygen consumption is not a big issue in swimming (you can take a breath as often as you want), it is the most important factor in apnea swimming). As shown on examples of several excelling freedivers, the relaxed (non-streamlined) position can and does often beat the fast streamlined (mostly monofin) swimmers.