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Tags hydration , speed , question

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Old 5th September 2005, 02:35 AM   #1
Jyera
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Question about speed of Hydration

When we drink a cup of water, how fast does it gets to the different parts of our body?
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Old 7th September 2005, 06:23 AM   #2
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Dunno, it probably varies a lot depending on which part of the body and how dehydrated you were to start with. Best estimate is probably something unhelpful like "a few hours".

Is there an underlying question there that you want an answer to, perhaps?
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Old 7th September 2005, 10:19 AM   #3
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Couldn't give you an exact figure, but endurance athletes like cyclists are told to "drink before you feel thirsty", as there is a significant time-lag between ingestion and getting into your system.
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Old 7th September 2005, 10:23 AM   #4
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It's not as long as "a few hours" though.

However, since gut absorption is the main limiting step, then I don't think it's possible to be very precise, as many factors can influence the speed of that.

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Old 7th September 2005, 09:03 PM   #5
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I attended some courses. They advocate the benefit of drinking water.

Apparently, after drinking water, there are some behavioural or physical changes almost immediately. It might be placebo effect or it might be psychological effect, but that is not the focus of this thread.

I noted that I cannot find any research on the rate absorption of water into the body. The lack of research and studies about the rate of absorption of water into body created some gaps.
It created opportunity for fertile imaginations about how water gets to the brain and body. Which I think might be quite misleading.

I figured that a documented scientific research about rate of absorption of water can provide a realistic and scientific grounding about what happened.

I know if someone inject some liquid into the vein of my hand, it'll get into my eyes within around 18 secs.

If I am able to find out how fast it gets from the gut to the blood stream, I might be able to deduce the realistic time of water to get from mouth to brain.

I understand it might vary depending on condition. But what is the fastest possible time we can expect water to get from the mouth to the brain, in the most optimum situation. That would hopefully, set some emphirical limit, and keep some wild imagination in-check.
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Old 7th September 2005, 11:29 PM   #6
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I have heard 20 - 30 minutes, but that was just told to me by fellow hikers, etc.
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Old 8th September 2005, 03:10 AM   #7
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I should think Homeopathic experts should know how fast water gets from the mouth to brain.
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Old 8th September 2005, 03:18 AM   #8
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Ah, but when the water has the same effect as the homeopathic 'remedy', it makes little difference.


Not to mention, it would vary from person to person, as well, I would think.
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Old 8th September 2005, 03:53 AM   #9
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Quote:
Originally posted by Jyera
I should think Homeopathic experts should know how fast water gets from the mouth to brain.
How should they know?

Hans
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Old 8th September 2005, 11:18 AM   #10
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Quote:
Originally posted by MRC_Hans
How should they know?

Hans
Beceause they are the guardians of a revealed Ultimate Truth TM, they don't need things like observed data to Know things, thats for us poor deluded empricists.
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Old 8th September 2005, 06:16 PM   #11
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Quote:
Originally posted by MRC_Hans quote:
--------------------------------------------------------------------------------
Originally posted by Jyera
I should think Homeopathic experts should know how fast water gets from the mouth to brain.
--------------------------------------------------------------------------------
How should they know?

Hans
There are two question here worth exploring.
1. Why should they know?
2. How should they know?

1. Why Should they know?
(a) They supported "science" of "memory of water". Their homeopathic solutions relied heavily on water as a delivery vehicle.As such I find it unacceptable that they do not know how fast water gets from the mouth to the brain. They should at least get their facts right (rate of absorption) about the mechanism of how their remedy worked.(if it does)

(b) I assume some of their innocent scientists or practitioner do try to find scientific explanation on why homeopathy worked. I hope knowing the fact about rate of absorption of water gives them a good grounding of what is possible and not possible.And hopefully some of them wakeup on any wrong imagination.

2. How should they know?
By doing real clinical research on real people.
Since Homeopathy has had a long history they should have ready facts.

3. Homeopathy do adopt other people's science to support their product. That is actually okay. But I have impression that they take more than they contribute.

So let just presume that modern science failed to provide any emphirical prove of the "rate of absorption of water from mouth to brain", I would think the homeopathic community is obliged to fill the gap.
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Old 8th September 2005, 07:01 PM   #12
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Quote:
Originally posted by clarsct
Ah, but when the water has the same effect as the homeopathic 'remedy', it makes little difference.

Not to mention, it would vary from person to person, as well, I would think.
Agree.
It is my observation that scientific studies helps homeopathy.
They could argue that a homeopathic solution has memory, by virtue of the ability of the weak hydrogen-bond of water molecules to acquire the characteristic of the active component.

Non-homeopathic community seemed rather complacent about the strength of science as an ally. And think that science is always on their side. Not true.

Telling half-truth is not only not punishable. It seems fashionable.
Scientific field, unexplored, allows for fertile ground for "sci-fiction"

"Sci-fiction" in the individual's mind helped Homeopathy to great effect. Internet allowed flow of scientific "half-truth".

This is not a thread about Homeopathy.
It is a thread about science.

I seek facts, I seek documented studies.

If there are non after our effort.
Then I seek support to call for such a study.
Please support me if you think it is worth while.
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Old 9th September 2005, 10:52 AM   #13
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Re: Question about speed of Hydration

Quote:
Originally posted by Jyera
When we drink a cup of water, how fast does it gets to the different parts of our body?
Other nutrients are not absorbed until they reach the intestines, but water and alcohol absorption are both started in the mouth and continued in the stomache. Sooo, just as a guesstimate, how long after a shot of booze do you feel it in your body? That ought to be someplace to start, as a rough comparison.

Anybody here been dehydrated enough to feel an improvement from a glass of water? Heat prostration to the point of no sweating, how long to sweat again after watering?
Or, dry enough to get a cotton mouth, don't you get immediate relieve after taking a drink?

I know that I awake with a full bladder everyday. I empty it and have a glass of water. Need to drain it again in 15 minutes, not so if I delay the drink. Sooo, 15 minutes from oriface to oriface ?

All anecdotal, just some ideas to look in to.
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Old 9th September 2005, 05:21 PM   #14
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I think it starts immediately. But I couldn't say when the last of it would be absorbed. If you drank a gallon of water, it be quite a while till all that sloshing disappeared. :cs
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Old 9th September 2005, 06:25 PM   #15
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Although not directly in answer to the question, I'm familiar with the standards for endurance athletes (I'm a cyclist).

The loss of as little as 5-6% of total body fluid will have an adverse effect on aerobic efficiency of as much as 20%.

Thus, road racers and those in training are advised to consume one large (16 oz) water bottle at least every 45 minutes.
This applies as well in cooler weather, since a large volume of liquid will be expelled as vapor by heavy breathing.
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Old 12th September 2005, 05:57 PM   #16
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Re: Re: Question about speed of Hydration

Quote:
Originally posted by casebro
Other nutrients are not absorbed until they reach the intestines, but water and alcohol absorption are both started in the mouth and continued in the stomache. Sooo, just as a guesstimate, how long after a shot of booze do you feel it in your body? That ought to be someplace to start, as a rough comparison.... snipe...
I'm not a booze drinker.

But think this is a good lead. Anyone more experienced?

Presumably there are policeman who walked around with breathe analyser to check if a person took alcohol. Logically they ought to have some info on how fast alcohol gets to the brain.


Why would water and alcohol be absorbed in mouth and stomach ?

For water, are you suggesting osmosis into the cell in the mouth?
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Old 12th September 2005, 07:32 PM   #17
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Quote:
Originally posted by Bikewer
Although not directly in answer to the question, I'm familiar with the standards for endurance athletes (I'm a cyclist).

The loss of as little as 5-6% of total body fluid will have an adverse effect on aerobic efficiency of as much as 20%.

Thus, road racers and those in training are advised to consume one large (16 oz) water bottle at least every 45 minutes.
This applies as well in cooler weather, since a large volume of liquid will be expelled as vapor by heavy breathing.
I recall some people selling "oxygenated water".
They touted the benefit of the oxygen content.
Since you are a cyclist I thought you might be the target consumer.
I understand people disputed the benefit.
But I thought for the oxygen to get to the place in the body where it is needed, some research must have been done about how the water gets around.
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Old 13th September 2005, 01:54 AM   #18
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Now take this very slowly.

Oxygen gets into the body from the air. Through the lungs. And is transported around the body by complexing with the haemoglobin molecule. This process is all extremely well understood.

Water is something you drink. Although there is an oxygen atom in a water molecule, it stays there. Water does not hydrolyse in the body to produce oxygen gas. Fortunately.

I think somebody has got a bit mixed up here.

Rolfe.
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Old 13th September 2005, 03:05 AM   #19
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Rolfe,

No confusion. I'm refering to doubtful stuff like this.
http://www.hiosilver.com/
http://www.hiosilver.com/the_truth_about_hydration.htm
No hydrolyse. I think they compressed/dissolved oxygen in water.
"Oxygenated water" as in "Carbonated water".

And as I mentioned it's benefit has been disputed.
http://www.psu.edu/ur/NEWS/news/april98sportsmed2.html

But they didn't say anything about how water gets around.
------------
On another note...
Can water with dissolved oxygen get into the blood stream after being consumed?
If it does, will the oxygen in the fluid in the blood be taken by haemoglobin molecule ?

I'm not a fish, but a fish does get it's oxygen from water. So technically there is a scientific possibility for oxygen to get into the blood.
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Old 13th September 2005, 04:08 AM   #20
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Quote:
Originally posted by Jyera
Can water with dissolved oxygen get into the blood stream after being consumed?
If it does, will the oxygen in the fluid in the blood be taken by haemoglobin molecule ?

I'm not a fish, but a fish does get its oxygen from water. So technically there is a scientific possibility for oxygen to get into the blood.
No. Humans don't have gills.

It's complete nonsense being used to sell quackery. Why do you bother about it?

Rolfe.
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Old 13th September 2005, 10:47 AM   #21
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Quote:
Originally posted by Bikewer
Although not directly in answer to the question, I'm familiar with the standards for endurance athletes (I'm a cyclist).

The loss of as little as 5-6% of total body fluid will have an adverse effect on aerobic efficiency of as much as 20%.

Thus, road racers and those in training are advised to consume one large (16 oz) water bottle at least every 45 minutes.
This applies as well in cooler weather, since a large volume of liquid will be expelled as vapor by heavy breathing.
Here is some info I dug up while training for back to back centuries this summer.

http://www.cptips.com/fluids.htm#coldfluids

Quote:
glucose containing liquids can deliver Calories from the mouth to the muscles in as little as 10 minutes as compared to solid foods and energy bars which empty more slowly from the stomach
I don't know if 10 minutes is exactly right but from my experience it is pretty close. Of course my experience was at mile 175 on the second day and my body was screaming for glycogen so under more normal circumstances where you are not dehydrated or needing calories it may be slower.

--
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Old 13th September 2005, 06:38 PM   #22
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Quote:
Originally posted by Rolfe
No. Humans don't have gills.
Humans don't have gills but fishes do.
Fishes ability to get oxygen, from oxygen dissolved in water, through their gills demostrate that oxygen can get into a body system of the fish while it is dissolved in water.

This is science, physics.

Can water with oxygen dissolved in it get transferred from outside the cell into it? Can the oxygen rich water transfer from one cell to another cell? How slowly? how quickly?

I suspect you might be inclined to say it cannot be done.
But why? Is there any scientific reason why it cannot be done?
Oxygen molecule too large? Holes in cell wall too small?


No doubt, Human's primary means to get oxygen into our body system is via the lung from the air around us. But that does not automatically means all other means cannot be possible. I could very well supply a patient oxygen, through the tranfusion of oxygen rich blood.

Quote:

It's complete nonsense being used to sell quackery. .
Yes, the oxygenated water is a marketing quackery. But if you read very carefully about their site, to be fair, they did not mention anything to state that the oxygen dissolved in the water will ever get into the lungs or blood stream. There is nothing wrong with the science, just the convienient lack of it. Lack of the science to expose the product to show that it won't work. And we cannot reasonably imagine these shrew businessperson are so foolish to include it in their brochure
Quote:

Why do you bother about it?

Rolfe.
I hope to find the rate at which water gets from the mouth to different parts of our body. I thought athletes who might have researched the "oxygenated water" critically and scientifically might have stumbled on some facts that leads me to some answer I seek.
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Old 13th September 2005, 06:48 PM   #23
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Quote:
Originally posted by mwilson
Here is some info I dug up while training for back to back centuries this summer.

http://www.cptips.com/fluids.htm#coldfluids


I don't know if 10 minutes is exactly right but from my experience it is pretty close. Of course my experience was at mile 175 on the second day and my body was screaming for glycogen so under more normal circumstances where you are not dehydrated or needing calories it may be slower.

--
Mike
Thanks mwilson. Will look into the link.

So it sort of set a limit to "no faster than 10 mins." to get it into muscle.
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Old 13th September 2005, 09:44 PM   #24
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Experiment for you
1. Best to start with an empty stomach. Get dehydrated slightly. Maybe do this first thing in the morning.
2. Drink water until your stomach is full.
3. Wait 10 minutes.
4. See if you drink as much as before. If so, your stomach has emptied between drinks. If you cannot then you did not wait long enough between drinks.

I was told it takes 10 minutes for water to be absorbed long time ago.
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Old 15th September 2005, 09:57 PM   #25
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Quote:
Originally posted by rjh01
Experiment for you
1. Best to start with an empty stomach. Get dehydrated slightly. Maybe do this first thing in the morning.
2. Drink water until your stomach is full.
3. Wait 10 minutes.
4. See if you drink as much as before. If so, your stomach has emptied between drinks. If you cannot then you did not wait long enough between drinks.

I was told it takes 10 minutes for water to be absorbed long time ago.
Sounds logical.

How do we know stomach full?

Some info I found said that when you are really full, you vomit.
If we vomit it will put us back on square one. Any suggestion how to avoid that?
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Old 16th September 2005, 12:44 AM   #26
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Quote:
Originally posted by Jyera
Sounds logical.

How do we know stomach full?

Some info I found said that when you are really full, you vomit.
If we vomit it will put us back on square one. Any suggestion how to avoid that?
Do not drink so much water. I drink about 2 - 3 glasses of water then my stomach feels full. See how quickly you can drink a second 2 - 3 glasses of water without feeling any more full than the first time.
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Old 16th September 2005, 05:23 PM   #27
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Quote:
Originally posted by rjh01
Experiment for you
1. Best to start with an empty stomach. Get dehydrated slightly. Maybe do this first thing in the morning.
2. Drink water until your stomach is full.
3. Wait 10 minutes.
4. See if you drink as much as before. If so, your stomach has emptied between drinks. If you cannot then you did not wait long enough between drinks.

I was told it takes 10 minutes for water to be absorbed long time ago.
I can tell you right now that there is no way that a person could drink to they are full, and expect all of it to be absorbed in 10 minutes to the point you could drink the equal amount all over again.

Are you sure that what "they" mean, instead, is that in 10 minutes, the FIRST of what you drank begins to be absorbed?

If you drank till you were full, you would be in misery, with your full sloshing stomach, probably for 2 hours or so. Unless, of course, you did this while single handedly building a pyramid out in the Sahara desert somewhere.
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Old 16th September 2005, 06:00 PM   #28
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Iamme, this is an experiment you are allowed vary it a little to suit your purposes. As I said in my previous post just drink 2 or 3 glasses of water, first thing in the morning. I know for me at least I can feel this water in my stomach. I assume everyone else can too. Or is that an invalid assumption? Then if you wait 10 minutes or so and drink water again until you have the same feeling as before then you know how much water the body has absorbed, because you have just drank that much water.

If you want to know exactly how quickly the first water reaches the arm then you need radioactive water and a Geiger counter. However, these things are not easy to get.
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Old 16th September 2005, 06:33 PM   #29
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If I drink liguids in the morning, after I first get up...I have to keep peeing. It's like I can't hold my liquid for the first 2 hours or so, for some reason. After that? I can go for hourssssss without having to go.
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Old 16th September 2005, 06:50 PM   #30
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Quote:
Originally posted by Iamme
If I drink liguids in the morning, after I first get up...I have to keep peeing. It's like I can't hold my liquid for the first 2 hours or so, for some reason. After that? I can go for hourssssss without having to go.
Thats because your kidneys have been working for hours without you peeing. Result: a full bladder.

Wait until you get in your 40s and older. You will start to get up in the night to have a pee.

Safety note. Pee during the day should be clear. Otherwise it is a sign you are not drinking enough (or maybe consuming dye or something).
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Old 17th September 2005, 07:25 AM   #31
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Quote:
Originally posted by Iamme
If I drink liguids in the morning, after I first get up...I have to keep peeing. It's like I can't hold my liquid for the first 2 hours or so, for some reason. After that? I can go for hourssssss without having to go.
Night time kidney function slows down. Seems it's controlled by a signalling chemical put out by the heart- less work by heart, less kidney function, allowing uninterupted sleep. In the mean time, your muscles and liver are working/repairing, making toxins. When you awake and drink water, your kidneys go back to work, flushing you system and making urine. I don't know about yours, but my bladder is the size of a pee.
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Old 17th September 2005, 10:39 PM   #32
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...and that non-conscious old guy shuffling toward the loo at 3:45
AM is the dreaded pee-zombie.....





sorry.carry on
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