Effects of Immersion in Aqua on the Body

[Firstjois]

EFFECTS OF IMMERSION IN WATER ON THE BODY

The simple act of "getting into the water" has profound
effects on the body. For a start, depending on the
temperature of the water, the sensation of water on the
skin may be anything from a shock with involuntary gasping
and an increase in blood pressure and an escalating pulse
to a blissful and relaxing experience.

Once in the water one breathes against the pressure of the
water surrounding the chest and lungs. Blood is forced from
the legs to the chest and abdomen which leads to an
approximate 30% increase in work load on the heart. So what?
Well if your cardiac function is compromised this may be the
proverbial last straw.

Another interesting effect - the bain of municipal swimming
pool keepers, is the effect that immersion has on the kidneys.
Bladders fill very rapidly in immersed individuals!. There are
several reasons for this which all lead to a very common
phenomenon - urination. The increased blood supply to the
kidneys in the absence of gravity pooling of blood in the
legs, combined with a reduction in anti diuretic hormone (anti
"pee" hormone or ADH) are the leading causes. Over a period of
time immersion will progressively lead to a state of
dehydration if fluid intake is not matched.

Many swimmers and divers complain of heart burn after a number
of hours in the water. This is because the increased pressure
on the stomach tends to cause reflux or back wash of gastric
acid into the oesophagus. People who have a tendency to get
heart burn are most likely to complain. This is of course more
of a nuisance than a danger.

See: http://www.dansa.org/medical/breath.html

So while Marco's apes are saving energy, resting submerged
under the aqua, their hearts have increased their work load by
30% - sure, that has got to be a energy saving adaptation,
right? And they are peeing in the water from which they must
drink or get dehydtated, while their fat babies were hanging
on to their hair. Well, there you go, proof!

Glad to help, Jois

[Rich Travs]

firstjois wrote:
>
> EFFECTS OF IMMERSION IN WATER ON THE BODY
>
> The simple act of "getting into the water" has profound
> effects on the body. For a start, depending on the
> temperature of the water, the sensation of water on the
> skin may be anything from a shock with involuntary
> gasping and an increase in blood pressure and an
> escalating pulse to a blissful and relaxing experience.
>
> Once in the water one breathes against the pressure of the
> water surrounding the chest and lungs. Blood is forced from
> the legs to the chest and abdomen which leads to an
> approximate 30% increase in work load on the heart. So what?
> Well if your cardiac function is compromised this may be the
> proverbial last straw.
>
> Another interesting effect - the bain of municipal swimming
> pool keepers, is the effect that immersion has on the
> kidneys. Bladders fill very rapidly in immersed
> individuals!. There are several reasons for this which all
> lead to a very common phenomenon - urination. The increased
> blood supply to the kidneys in the absence of gravity
> pooling of blood in the legs, combined with a reduction in
> anti diuretic hormone (anti "pee" hormone or ADH) are the
> leading causes. Over a period of time immersion will
> progressively lead to a state of dehydration if fluid intake
> is not matched.
>
> Many swimmers and divers complain of heart burn after a
> number of hours in the water. This is because the increased
> pressure on the stomach tends to cause reflux or back wash
> of gastric acid into the oesophagus. People who have a
> tendency to get heart burn are most likely to complain. This
> is of course more of a nuisance than a danger.
>
> See: http://www.dansa.org/medical/breath.html
>
> So while Marco's apes are saving energy, resting
> submerged under the aqua, their hearts have increased
> their work load by 30% - sure, that has got to be a
> energy saving adaptation, right? And they are peeing in
> the water from which they must drink or get dehydtated,
> while their fat babies were hanging on to their hair.
> Well, there you go, proof!

Not to mention getting dehydrated. Interesting consequence.

[Mario Petr]

firstjois :
> EFFECTS OF IMMERSION IN WATER ON THE BODY
>
> See: http://www.dansa.org/medical/breath.html
>
> So while Marco's apes are saving energy, resting submerged
> under the aqua, their hearts have increased their work load
> by 30% - sure, that has got to be a energy saving
> adaptation, right? And they are peeing in the water from
> which they must drink or get dehydtated, while their fat
> babies were hanging on to their hair. Well, there you go,
> proof! Jois

In this article, they were mentioning our ADAPTATIONS
to diving (diving reflex and <15C diving). Adaptations
doesn't fall from sky. Plus, I really don't know what
is wrong with peeing into sea. Is this another
adaptation? Peeing in the sea is much better than
peeing on the tree. So that every predator around
knows where we are. If we went along shoreline, away
from our base, it would be extremly useful to pee
while we are in sea. This would significanlty add to
predator avoidance. And you are mentioning that we
have 30% increase in heart workload during diving.
Jois, a giraffe could faint (AFAIK) when it puts its
head down to drink. We are upside-down all the way
during diving. Are you sure that other animals could
survive this without bigger problems, like we do? I
don't know how much do you know about brain drainage
systems, but in this article, the author is comparing
our systems to that of giraffe, bats and whales. I
still didn't examine this article properly, though, so
maybe I understood something wrongly.

www.chiroweb.com/archives/19/26/04.html

-- Mario

[Firstjois]

"Mario Petrinovich" <mario.petrinovic@zg.tel.hr> wrote in
message news:bvd2d4$uu2$1@ls219.htnet.hr...
: firstjois :
: > EFFECTS OF IMMERSION IN WATER ON THE BODY
: >
: > See: http://www.dansa.org/medical/breath.html
: >
: > So while Marco's apes are saving energy, resting submerged
: > under the
aqua,
: > their hearts have increased their work load by 30% - sure,
: > that has got
to
: > be a energy saving adaptation, right? And they are peeing
: > in the water from which they must drink or get dehydtated,
: > while their fat babies
were
: > hanging on to their hair. Well, there you go, proof! Jois
:
: In this article, they were mentioning our
: ADAPTATIONS to diving (diving reflex and <15C
: diving). Adaptations doesn't fall from sky. Plus,
I
: really don't know what is wrong with peeing into sea. Is
: this another adaptation? Peeing in the sea is much better
: than peeing on the tree. So that every predator around knows
: where we are. If we went along
shoreline,
: away from our base, it would be extremly useful to pee while
: we are in
sea.
: This would significanlty add to predator avoidance. And you
: are mentioning that we have 30% increase in heart
workload
: during diving. Jois, a giraffe could faint (AFAIK) when it
: puts its head down to drink. We are upside-down all the way
: during diving. Are you sure that other animals could survive
: this without bigger problems, like we do? I don't know how
: much do you know about brain drainage systems,
but
: in this article, the author is comparing our systems to that
: of giraffe, bats and whales. I still didn't examine this
: article properly, though, so maybe I understood something
: wrongly.
:
: www.chiroweb.com/archives/19/26/04.html
:
: -- Mario
:
Mario, you aren't going to get an invitation to swim in the
pool this year.

Jois