Swimming and dehydration.

In article said:

I spent a rather lengthy session in a pool thi sweekend for a class. I had suspicions before this
weekend that cold or cool water had a tendancy to cause me to shed water. Knowing I was going
into this

It's a typical human response to cold water. Poke around in diving lit (or the newsgroup) and you
can probably find someone to explain the physiology behind it.

--
Jason O'Rourke www.jor.com

<MJuric> wrote in message "]news:[email hidden]...

Quoted message said:

I spent a rather lengthy session in a pool thi sweekend for a class. I had suspicions before this
weekend that cold or cool water had a tendancy to cause me to shed water. Knowing I was going into
this class I paid specific attention to my urine color. Before I entered the pool the first time
my color was fairly yellow indicating a rather low hydration level. I did not drink anything on
purpose nor had I had anthing to drink in the previous 2-3 hrs or more. After being in the pool
for about an hour and half, not doing heavy activity mostly drills, off I went again. This time It
was clear. I was in the pool for around a total of 4 hours and urintated several times all with
clear results. I also never, on purpose, drank anything. About 2 hrs after exiting the pool I went
again this time the urine was very brightly yellow indicating very low hydration level. This seems
to be a very typical cycle for me, although thsi is the first time I specifically noted times,
color etc. My question is what Process(s) is taking place to cause the body to shed water like
this? And the second question is how does one counteract this reaction, particularlly if a person
is in a triathlon situaton?

~Matt

Welcome to our ool. You'll notice there is no 'p' in it. Please keep it that way.

Its odd I just noticed this too. What I like about it is after a combined 2 hour swim/workout I
usually am a few pound lighter on the scale! But it does seem strange. I hope its a healthy thing.
No one else brings water to drink while in the pool.

sorry, i can't really respond to this, but i did recently experience the ill effects of not being
well hydrated before a swim. i intended to do a
1.5-2 hour workout, but partway through my main set, i suffered a crippling cramp in the calf
muscle. after a lot of massaging, it settled down, but i just didn't feel right to continue much
after that. just a few really easy laps, and the leg kept feeling like it was about to cramp up
again. i've heard that lack of potassium and hydration can lead to this problem, and i believe it.

in hindsight, i should not have attempted this long workout so long (three or so hours) after my
last food intake. a small snack nearer to the swim would have helped, i'll bet. and i hadn't been
drinking many fluids that day, either.

does this ring true for anyone else? so while that workout was cut short by the cramp, i must
mention that i was right in the midst of setting a new distance record for myself... a continuous
450m swim, pretty darned amazing for me, who could barely do 100m easily last fall. ok, next time
i'll snack prior to the swim, and will bring a water bottle to the pool.

Cam

In article said:

I spent a rather lengthy session in a pool thi sweekend for a class. I had suspicions before this
weekend that cold or cool water had a tendancy to cause me to shed water. Knowing I was going into
this class I paid specific attention to my urine color. Before I entered the pool the first time
my color was fairly yellow indicating a rather low hydration level. I did not drink anything on
purpose nor had I had anthing to drink in the previous 2-3 hrs or more. After being in the pool
for about an hour and half, not doing heavy activity mostly drills, off I went again. This time It
was clear. I was in the pool for around a total of 4 hours and urintated several times all with
clear results. I also never, on purpose, drank anything. About 2 hrs after exiting the pool I went
again this time the urine was very brightly yellow indicating very low hydration level. This seems
to be a very typical cycle for me, although thsi is the first time I specifically noted times,
color etc. My question is what Process(s) is taking place to cause the body to shed water like
this? And the second question is how does one counteract this reaction, particularlly if a person
is in a triathlon situaton?

~Matt

MJuric said:

I spent a rather lengthy session in a pool thi sweekend for a class. I had suspicions before this
weekend that cold or cool water had a tendancy to cause me to shed water.

Warm water will do it too, but by causing you to sweat a lot. If you work hard

"Go hard or go home."

martin

--
Martin Smith email: [email hidden] Vollsveien 9 tel. : +47 6783 1188
P.O. Box 482 mob. : +47 932 48 303 1327 Lysaker, Norway