>> I swim in a 55 yard pool that varies in depth from each end to the middle.
>> The pool is only 3' at each end and drops to 5' 8" in the middle. The shape
>> is a little too difficult to draw, but the floor of the pool drops from about
>> 3' 6" to 5' 8" over the middle third of the pool.
>> My question is that my speed seems to drop over the middle third of the pool.
>> Is this an illusion caused by the floor being further from the eye? or am I
>> actually accelerating over the shallow ends of the pool?
>> Brett Daniel
>> School of Computing Science
>> Curtin University of Technology
>> Western Australia.
>I am a competitive swimmer at the University of Northern Iowa and I have had
>similar experiences throughout my years of swimming.
>It feels like you are swimming slower in a deep water pool due to the distance
>between you and the bottom. It is similar to flying in a plane and watching
>the ground pass below, it doesn't feel like you are going really fast. Some
>people say that deep water pools actually are "faster" than more shallow pools.
I don't understand all of the variables but I can say that everything I
have heard since my children began competitive swimming about a year ago
is that the deeper the pool the faster the times. I think it has to do
with the amount of turbulance that is generated by the swimmers in the
water therefore it must be faster to swim in water with less turbulance.
This seems to hold true with one of the other factors that I have heard
which effects pool speed which is the type of lane lines and whether
there is an empty lane on each side of the pool. Evidently large lane
lines deaden the waves generated by swimmers which effectively calms
the water. Also, if there is a good bit of distance (an empty lane for
example) between the outside swimmer and the side wall of the pool, the
wave dies out and isn't deflected back as strongly. To me, all of these
factors seem to be related to the smoothness/roughness of the water.
I'm sure there are other reasons but these are the ones I have heard of.
Based on what I have said above, you should actually be going faster over
the deeper part of the pool.
Just my .02 worth. I would like to hear any other reasons why a deeper
pool is supposed to be faster. Everyone I have talked with has said
that all other factors being even, the deeper the pool the faster. Does
anyone disagree with this?
>It still doesn't feel like you are moving, but your times are actually nearly
>Jay "Drift" Atwood
>University of Northern Iowa
>Cedar Falls IA USA
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