On Fri, 2 Mar 2001 02:01:38 -0500, Confucio Anonymous <[log in to unmask]>
wrote:

>On Fri, 2 Mar 2001 10:14:22 +1100, David Strike <[log in to unmask]>
>wrote:
>
>....
>>And for Giovanni, there's an excellent section called, "Turning on your
>>computer shouldn't mean turning off your brain"   :-)
>
>Yes and there is also an excellent section for you and Mr. Feesh.
>Among DCS Susceptibility Factors (Pag.13) we have:
>"...A person's psychological state has a definite effect upon
>physiology.

Yes, a crazed person who thinks an AI computer can substitute for
his brain has definitely the adverse effect on his physiology (his
brain), and should not dive!

>
>So in the case of nacked mermaid or X-files or whatever can
>increase our breathing ratio and heart rate we are more exposed
>to DCS.

But you should have read THIS passage from J.M.'s medical article:

> An additional control group of 24 pigs was dived to clarify
> the influence of weight. The results suggest that the risk of
> neurologic DCI is reduced by physical conditioning, and the
> effect is independent of differences in age, adiposity, and
> weight.

As J.M. noted, these swines are from THIS List.  Since it is
unethical for controlled medical studies to be performed on
humans, they are normally done on RATS (such as in studies on
the effect of smoking) or MONKEYS or DOGS, or other animals
who share an amazing number of the same genes and the genome
structure as humans, so that presumably the PHYSIOLOGICAL
effect on these animals in the medical studies are probably
applicable to humans as well.

There not being enough rats, monkeys and dogs in this List,
but plenty of swines, that's why they were chosen in that study.

The study is one of a VERY FEW that is properly done, based on
a CONTROLLED study, using experimental and controlled groups.
Note that the conclusion of the study is exactly OPPOSITE what
Giovanni speculates!


>Fortunately the AI computer take this into account and
>doing the proper calculation, beats the bends.
>
>Confucio

UNFORTUNATELY, if the AI computer is able to take the breathing
rate in the way you thought it could, they would be in exactly
the OPPOSITE direction of what it should be, according to the
SWINE study.

FORTUNATELY, no AI computer is able to do any such, of programming
breathing rate into any PHYSIOLOGICAL model.

J.M. mentioned something about some castrated swines in that
study.  Confucio, your friend Giovanni must have been one of
those castrated swines.  :-)))))


Now onto a more serious note.  NOBODY knows what EFFECT heavy
breathing or NORMAL exertion from exercise has on the propensity
to DCS, because there hasn't been many medical studies done on
the subject.  The effect of EXCESSIVE exertion is postulated
because the Navy had plenty of data on human subjects doing
dives on W*RK that is very challenging physically.  In fact,
the Navy has devised a way of MEASURING the degree of exertion
(the details of which are given in the NEDU rating for regulators!).
That's a different topic that had been fairly thoroughly discussed
by me in Scuba-L, in response to various myths spewed forth by
Hugh Huntzinger.  :-)  He knows the score now, after I sent
him (circa 1995) several articles on the subject (circa on NEDU
studies made in the 1980s and reported in the early 90s in
UNDERCURRENT.

J.M.'s reported swine study is good for many jokes, and I think
we have made those jokes pretty well already.  :-)

On the serious side, it DOES provide an indication that MODERATE
exercise and whatever elevated breathing or blood flow associated
with such, is BENEFICIAL rather than detrimental to the avoidance
of DCS, and while it is not sufficient to be considered conclusive
by any means, it does have the appearance of a valid scientific
study, and it should at least put to question the MYTH and
SPECULATIONS (spewed forth by Confucio's "friend") taken as if
they had been proven and programmable into any AI computer PROPERLY.

So, the REAL joke is on the crazy, castrated swine friend of
Confucio on this list, named Giovoani(?), relative of
Scenairo.  :-)))))))))

-- Bob.