Testing the Difference Between Superman and Hyper Streamline Position
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- Опубликовано: 6 сен 2024
- Although the streamline is one of the first things swimmers ever learn, we see so many using one that results in more drag. Many coaches or swim instructors will tell swimmers to squeeze their head between their biceps. This causes the back of the head to stick out from behind the arms, putting the body in a position with additional drag. Thanks to velocity meter technology, we were able to test just how much of a difference streamlining actually makes. Often times we see swimmers get lazy off the walls, not even streamlining at all but instead just using what we call a "Superman" position. Watch the video above to see just how much of a difference using a hyper streamline makes. We guarantee it will convince you to change some of those poor streamlining habits.
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What stands out to me, in the hyper stream lined position, he has a slight arch in his back and body. Worked out with the gymnastics team at the University of Oregon many years ago. I have recently discovered that I should 'feel' the water flowing over my back as well as over my tummy. In the position he is holding there is a dead zone just behind his shoulders, and he will be feeling water flowing on his tummy, but not his back.
Side note, remembering your video about air bubbles and penguins, where you drag that swimmer through the water... That got me to thinking about what ideal head position is, with least amount of drag. Maybe one of those endless pools with the swimmer tethered to the wall and side camera view, and head angles from negative through positive. I guess head shape could make a big difference. I would have arms extended in front more like when you are swimming freestyle. You have toys that I don't have...... Most of mine are for the wood shop.
Thanks for your analysis! You're definitely right that different body shapes will affect drag differently.
The video shows that in superman pose he covered 2.64 meters in 3.4 seconds, making an everage speed of 0.23 m/sec. Shouldn't the average speed, in this case, be somewhere around 0,77 m/sec? Also, on a hyper streamline position, he covered 3.17 meters in 3.4 seconds, making an average speed of 0.28 m/sec. Shouldn't it be about 0.93 m/sec?
You are right. This was a ten year old swimmer who did not have much propulsion leaving the wall. Normally, with older athletes, the peak speed leaving the wall is around 3 m/sec. The average speed to 3-5 meters should always be faster in hyperstreamline.
Second point I am curious about. In the hyper streamlined position, I would think his head is too low. I would think having his arms on his ears as he goes through the water would be a better stream line position. Being centered would allow the arms to break the water in front of his head. With his arms on the back of his head, most of the head is exposed to the water, almost like having the head too high.
We see many coaches recommend squeezing the ears with the arms. This results in the back of the head sticking out behind the arms. After testing this out using the drag meter, we found it's better to keep the chin on the chest with no part of the head sticking out.
@@theraceclub Well, there is always too high, and too low, just looked low to me.
I have looked at this a number of times... Also played with it in the pool. I guess I expect that minimal drag would be with the head centered between the arms as the arms would 'break' the water in front of the body in the stream line position. If I have my arms on my temples, then for sure my head is too high. Chin on my chest, is too low and the head is lower than my chest. Arms on my ears, seems to be the least drag position.
Looking at this young swimmer, his back appears to be slightly concave, and chest and abdomen are slightly convex. However, his head is in line with his chest. I have seen a camera video that I think is air currents that show all the vortices of some thing moving through the air. Wish they had one that could do that for water. That would make it far more easy/simple to find exact minimal drag positions. Can't quite put us in an air tunnel and run smoke streamers past us....
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Hmm.. 2,64 m /3,4 sec = 0,78 m/sec.. and 3,17 m / 3,4sec = 0,93 m/sec ... Not doubting your results, just the intermediate calculation results... Or am I missing something?
Beat me to it. Still a great video though….✅
Good catch! We're working on fixing it. Thanks!
Thank you for the demo & experiments.
Absolutely, Melvin. Thanks for watching!
what do you think about this in regards to breastroke gliding?
We recommend using what we call a "racing streamline" for breaststroke. This means the hands are together with the thumbs tucked underneath. The arms should be as straight as possible with the head down and chin tucked on the chest.
@@theraceclub i think it would be more insightful to see the comparision of what you just described vs hyper streamline.
Would love to see a video comparing different streamlines and not the Superman which isn’t even a streamline. Great work tho.
Hello there.you doing very well.my dream is be a good swimmer
You got this, good luck!
You're telling me Superman can fly even faster?
Better believe it!