13 replies to this topic

[tetley]

This is what happens when you don't run with an ipod and you're left only with your thoughts to keep you company at 4:30am....

I was rolling along this morning and started to get the urge that i needed to go to the toilet for a whiz. But then i remembered that i had the same sensation last time i did a long run and that feeling had past by the time i finished the run. Which begged the question: If your body is becoming dehydrated, does it have the potential to "re-process" the urine in the bladder to assist with fighting dehydration and could this be why sometimes i start a long-run feeling like i need a whiz but don't by the time i finish? And if i avoid taking a pit-stop, am i assisting my body in its efforts to battle dehydration?

[LaurenR]

Someone correct me if I'm wrong (as if you wouldn't!) but I don't think your body would reabsorb the urine because it's just waste products that need to be excreted so wouldn't have any benefit. Plus I don't think the bladder can phyiscally reabsorb anything (something to do with the structure of the wall of the bladder?). It's been a while since I studied this....

I definitely get the same thing though, perhaps it's just the urine gets concentrated and the production of it slows, and you get distracted by the run?

[Olmy]

The body can adjust urine depending on the body's needs, but it can only concentrate urine (retain the H2O) so much as it does some water to bring out the other products. Once the urine is in the bladder, however, it cannot be reabsorbed.

[tylerdurden]

tetley, on Apr 1 2009, 02:59 PM, said:

This is what happens when you don't run with an ipod and you're left only with your thoughts to keep you company at 4:30am....

I was rolling along this morning and started to get the urge that i needed to go to the toilet for a whiz. But then i remembered that i had the same sensation last time i did a long run and that feeling had past by the time i finished the run. Which begged the question: If your body is becoming dehydrated, does it have the potential to "re-process" the urine in the bladder to assist with fighting dehydration and could this be why sometimes i start a long-run feeling like i need a whiz but don't by the time i finish? And if i avoid taking a pit-stop, am i assisting my body in its efforts to battle dehydration?

I dont think your body will re-use urine, as it is a waste product and has been dealt with. I think that the decreased need to urinate has to do with the sympathetic nervous system (SNS) who's job it is to regulate bodily functions when the body is placed in a stressful situation. These functions can include slowing of digestion, decreasing the need to urinate, raising heart rate etc. Maybe early in the run you are a bit nervous (perhaps under race conditions), or excited, or cold, and as the body adapts, the SNS takes control.

I'm no doctor though, just my 2 cents.

[Mick]

tetley, on Apr 1 2009, 02:59 PM, said:

If your body is becoming dehydrated, does it have the potential to "re-process" the urine in the bladder to assist with fighting dehydration

Of course, you just need a cup !

[walker1st]

interesting explanations.

it does not reabsorb the urine
increase concentration means less water

the body can take water from urine back,
however practicing this is not healthy

and : teh fact that You pee is not an indication of proper hydration,
body creates urine when it needs to get rid of various chemicals and it takes water with it regardless how well or not You are hydrated.

on the other hand, if You drink water (say pure cold water) body will not absorb this on the tissue-cellular level at all) and will just get rid of it via pee function, this will take lots of body minerals and nutrients with it), so teh body will be dehydrated as well as deminerilized.

It is very intersting how people keep drinking cold water and pee every hour and their body is dehydrated and leach out of the minerals

[julz83]

aha tetley the things you think about indeed

yes as has already been clarified the kidneys excrete urine as a waste product so re-absorption from the bladder is not possible.
retention of fluid within body cells is caused by dehydration hence the reasoning behind decreased urine output and higher concentrated urine.

perhaps it's a psychological thing needing to go and then not? as in once you're running your thoughts are somewhere else so you 'forget' that you need to urinate.


dont shoot me if im wrong- im only a 3rd year nursing student

[Janeo]

walker1st, on Apr 1 2009, 05:05 PM, said:

on the other hand, if You drink water (say pure cold water) body will not absorb this on the tissue-cellular level at all) and will just get rid of it via pee function, this will take lots of body minerals and nutrients with it), so teh body will be dehydrated as well as deminerilized.

It is very intersting how people keep drinking cold water and pee every hour and their body is dehydrated and leach out of the minerals

OK, this might be Dumb Medical Question #177 - but walker1st, how do you rehydrate? Is it just that the temperature of the water is cold so the body won't absorb it so you should drink body temperature water? Or am I way off the mark?

[tonedbutt]

Yeah I'm curious too, Janeo. If what walker 1st says is true I must be totally stuffed because I hate drinking "cool" drinks that are less than icy cold. Room temp water just does not slake my thirst and as for drinking a lukewarm Powerade, bluuuuurrrkkk.

[Leofisio]

As long as the urine reached the bladder... that is it! Water cannot be reabsorbed at that stage.

The urge to go to the toilet is a neurological response that the bladder is getting full... some people control this better than the others, the fact that you felt this without the ipod shows that you were not able to divert the attention to pee... this is clear in studies of incontinence. But this also happens with normal people like you!

Final thing: this is not a dumb question!

Leo

[Leofisio]

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Edited by Leofisio, 02 April 2009 - 06:26 AM.

[walker1st]

while medical textbook and all pro who studied from them would claim the same, like urine in the blader and thats it, the water can actualy go the other way and be reused by the body, making the chemicals in the bladder more concentrated in the process.

I do not have teh studies to back this up of course, as teh studies are allways under teh control of medical industry, so lets not argue this here, and let everybody take any believe they wish from this.
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Hydration is not realy about H2O, think more about the ocean and what ocean water is, it is not just
H2O.
similarlt in human body it is not just about H2O, it is about liquidy substance of minerals, other micronutrients, disolved fats in the water, minerals are in ionic state, so they have electrical charge,
some have electrons missing and some have electron excess.

while so called sport drink take some crushed rocks powders and mix it with poluted water, sugar and colourings and pretend this is what body needs (and some silly studies shows that this absorbs bit better than water = body gets fooled intitialy in the mouth and in teh stomach and guts).
However body have no use for such a creation and it does not hydrate on cellular level.

You need to have drink which has water of proper quality to start with (this on its own is topic for few books) and have disolved fast and minerals and other micronutrients PLANT BASED, not rock based
or not animal based.

I just throw lots of examples, some better than others but gives You basic clues:

in past (centuries back) the athletes would drink animal blood and animal milk (unprocessed)

old runners secrets for distance running was drinking tea with sugar,
this can be played with using various tea ( I use jasmin and green) and use honey and lemon
the tea leaves disolve lots of minerals and other biochemicals into water, adding lemon drops also helps with electrical qualities, honey is not just teh sugar, tea has also minimal fats component as has any plant

fruit and vegs juices

veggie soups or water from boiled vegs

juicy fruit and juicy vegs

water from coconut

etc

there are very healthy living isolated cultures with no access to drinkable water and they only drink coconuts and drink from oranges and similar fruit.

for teh body to absorb the water-minerals and al into cells Yoiu need to eat regularly raw nondamaged plant based fats and do not consume any animal and chemical fats, damaged fats rancids etc.

cell walls are build from fat molecules, if these fats are from inferior material (hello margarines)
the cell wall would be impenetrable so nutrinets, or water in and no toxic waste out and no oxygen in, so teh cekll sugffocates and dies in own waste toxic suffocating dead.

This is teh reason for any ilness and ageing and this known for very long time
but is hidden from popul;ation for obvious reasons, cancer industry is own by rockefelers and their cocriminals.

suffocating cell is precondition for cancer.

the cell could not hydrate properly in such conditions, so it is what You drink and what fat You eat
and what You do not eat.

water in and pee out is not what hydration is all about, despite the oficial propaganda.

[tetley]

Thanks Leo....i suspected that might be the answer.....and congratulations on the PhD!

[julia]

I always feel like I need to pee before I run, I think it's because I know how much longer I have ahead of me and I'm like "omg that much time before I can get to the loo?" - then I start running and it goes away....usually - or makes me wish I was a boy when I'm stuck out on a road in the middle of nowhere.