Oh, if DECOM help file says it, it must be correct.  I am sorry I questioned
you.  And if DECOM generates tables that make the dive longer, that too must
be correct.  What was I thinking.

Try doing a few hundred dives that require one to eight hours of deco and
dive with guys with colectively several thousand dives with decos ranging
from one to sixteen hours of deco and I think you may find a different set
of information.

Trout

-----Original Message-----
From: Mike Rodriguez <mikey@ma*.co*>
To: Jess Armantrout <armantrout@wo*.at*.ne*>
Cc: Cam Banks <cam@ca*.co*>; Techdiver Mailing List
<techdiver@aquanaut.com>
Date: Friday, April 02, 1999 12:38 PM
Subject: Re: Deep deco question


>At 05:31 AM 4/2/99 -0600, Jess Armantrout wrote:
>
>>>The purpose of deep-stops is to reduce the fatigue (generally
>>>believed to be sub-clinical DCS) that is often associated
>>>with deep/deco diving.
>>
>>
>>no, it is for all symptoms of dcs.
>
>From the Decom help file:
>
>"Divers utilizing deep stops report a lessened degree of
>fatigue."
>
>I agree that deep-stops reduce all symptoms of DCS, not just
>fatigue; however, in my conversations with divers who use
>deep stops, I've found that most use them to reduce fatigue,
>not to reduce other DCS symptoms.  This seems to be because
>fatigue is very common after diving, while more serious
>DCS symptoms are rare.  Also, most of the divers I've
>spoken to use conservative deco schedules rather than deep-
>stops to help avoid DCS.  If they also use deep-stops, they
>do so to reduce fatigue.
>
>So, in this context, I stand behind my original statement.
>
>>>Note that deep-stops have not been demonstrated to decrease
>>>the incidence of DCS, however deep-stops will almost
>>>certainly NOT INCREASE the incidence of DCS.
>>>
>>
>>
>>yes, deep stops have been demonstrated to decrease the incidence of dcs in
>>Richard Pyle and in the WKPP mixed gas exploration divers.  Failure to de
>>them has been demonstrated to increase dcs in the same subjects.
>
>From the Decom help file:
>
>"The numbers are not in on any reduction of DCS
>from this method. It will however NOT increase your rate
>of DCS incidence."
>
>If there is newer information available, please point us to
>it.  I'm very interested in reading it.
>
>>>Effectively, deeps-stops slow your ascent to prevent
>>>sub-clinical DCS from beginning in your saturated
>>>fast tissues yet keep your ascent fast enough to prevent
>>>your slow tissues from loading up on N2/He.  In practice,
>>>deep-stops add only a few (~5) minutes of deco time to
>>>the typical tech dive.
>>>
>>
>>
>>no, done correctly deep stops reduce deco time
>
>Generated by Decom:
>
>Deep stops = YES
>Total deco time = *94*
>Depth Time   DT
>  200   30   30
>  120    1   34
>  110    1   35
>  100    1   36
>   90    1   37
>   80    1   38
>   70    3   41
>   60    6   47
>   50    7   54
>   40   14   68
>   30   20   88
>   20   15  103
>   10   24  127
>
>
>Deep stops = NO
>Total deco time = *90*
>Depth Time   DT
>  200   30   30
>   80    3   37
>   70    3   40
>   60    6   46
>   50    7   53
>   40   14   67
>   30   18   85
>   20   15  100
>   10   24  124
>
>-Mike Rodriguez
><mikey@ma*.co*>
>

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