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From: "Sean T. Stevenson" <ststev@un*.co*>
To: "Simon Murray" <simonm@ho*.co*.za*>,
"Tech Diver"
Date: Fri, 31 Mar 2000 07:20:38 -0800
Subject: Re: Back gas breaks

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Simon, try alternating 12 minutes on O2, 6 off.

-Sean


--Original Message Text---
From: Simon Murray
Date: Thu, 30 Mar 2000 19:21:55 +0200

I have recently begun running bottom times that require increasing time
at 6m on O2 (profiles calculated using Decoplanner).  I would like some
feedback on back gas breaks, i.e. suggestions on when to take them and
for how long.  
 
Here is what I am currently doing:
 
Format:
Total time required at 6m by Decoplan: initial time on 02, 1st break,
2nd O2 period, 2nd break, etc 
 
30min: 15, 5, 10
35min: 15, 5, 15
40min: 15, 5, 20
45min: 20, 5, 20
50min: 15, 5, 15, 5, 10
 
Are these sufficient O2 breaks or should I be putting in more ?  As the
balance of my recreational time is spent cycling, I am particularly
focused on maintaining post dive vital capacity.
 
 
Thanks,
 
Simon Murray



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<HTML>

<FONT FACE="MS Sans Serif" DEFAULT="FACE"><FONT SIZE="1" POINTSIZE="8"
DEFAULT="SIZE">Simon, try alternating 12 minutes on O2, 6 off.<BR>
<BR>
-Sean<BR>
<BR>
<BR>
--Original Message Text---<BR>
<B>From:</B> Simon Murray<BR>
<B>Date:</B> Thu, 30 Mar 2000 19:21:55 +0200<BR>
<BR>
<FONT FACE="Times New Roman">I have recently begun running bottom times that
require increasing time at 6m on O2 (profiles calculated using Decoplanner).  I
would like some feedback on back gas breaks, i.e. suggestions on when to take
them and for how long.  <FONT FACE="MS Sans Serif" DEFAULT="FACE"><BR>
 <BR>
<FONT FACE="Times New Roman">Here is what I am currently doing:<FONT
FACE="MS Sans Serif" DEFAULT="FACE"><BR>
 <BR>
<FONT FACE="Times New Roman">Format:<FONT FACE="MS Sans Serif"
DEFAULT="FACE"><BR>
<FONT FACE="Times New Roman">Total time required at 6m by Decoplan: initial
time on 02, 1st break, 2nd O2 period, 2nd break, etc <FONT FACE="MS Sans
Serif" DEFAULT="FACE"><BR>
 <BR>
<FONT FACE="Times New Roman">30min: 15, 5, 10<FONT FACE="MS Sans Serif"
DEFAULT="FACE"><BR>
<FONT FACE="Times New Roman">35min: 15, 5, 15<FONT FACE="MS Sans Serif"
DEFAULT="FACE"><BR>
<FONT FACE="Times New Roman">40min: 15, 5, 20<FONT FACE="MS Sans Serif"
DEFAULT="FACE"><BR>
<FONT FACE="Times New Roman">45min: 20, 5, 20<FONT FACE="MS Sans Serif"
DEFAULT="FACE"><BR>
<FONT FACE="Times New Roman">50min: 15, 5, 15, 5, 10<FONT FACE="MS Sans
Serif" DEFAULT="FACE"><BR>
 <BR>
<FONT FACE="Times New Roman">Are these sufficient O2 breaks or should I be
putting in more ?  As the balance of my recreational time is spent cycling, I
am particularly focused on maintaining post dive vital capacity.<FONT
FACE="MS Sans Serif" DEFAULT="FACE"><BR>
 <BR>
 <BR>
<FONT FACE="Times New Roman">Thanks,<FONT FACE="MS Sans Serif"
DEFAULT="FACE"><BR>
 <BR>
<FONT FACE="Times New Roman">Simon Murray<FONT FACE="MS Sans Serif"
DEFAULT="FACE"><BR>
<BR>
<BR>

</HTML>


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