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From: "tom wylie" <hoveller@ho*.co*>
To: dir@cw*.ne*, techdiver@aquanaut.com
Subject: Re: dive hydration
Date: Thu, 24 Feb 2000 10:08:00 GMT
I am also interested in this issue of dive hydration, in particular post 
dive hydration.
Over the past number of years I have noticed a trend on sports divers that 
do a double/triple dive day here in the UK.
For simplicity I will deal with a double dive day.

The trend is the ability to dive on the second dive.
First let me set typical conditions...

Breathing media on both dives Air.
1  Dive one less than 50m ( approx 166feet) duration approx 20min .
   Max deco approx 25mins.

Surface duration > 240 mins

2  Dive 2 less than 35m (approx 120feet) duration approx 25min
   Max deco approx 20min


It is common for all divers to drink alot of water before the first and 
second dive of the day, starting to drink about 60-90min  before the dive, 
generally when they get on the boat to get to the site.
Nearly all drink water...

However those that drink post first dive about 1 pint (500ml) of water 
slowly post 1st dive appear to be in better spirits for the second dive 
(asuming that they drink pre second dive), also (althought I have little 
empirical measurements other than personal observaton) they appear to me 
less succeptable to dive induced illness.

Is the answer just the amount of water... to me this is to simple, or is 
there an answer in the timeing...

Opinions on this please.

Tom



>From: <dir@cw*.ne*>
>Reply-To: dir@cw*.ne*
>To: techdiver@aquanaut.com
>Subject: dive hydration
>Date: Wed, 23 Feb 2000 08:53:38 GMT
>
>Before & after a dive, what is the best drink to take?
>I read somewhere that apple juice is good because it is less
>diuretic than (say) orange juice - this of course maybe total BS
>Is black grape juice good? Black grape skins contain natural antioxidants
>so I am guessing that it would be advantageous when the body has high
>concentrations of free radicals.
>Can someone set me straight on this pls?
>regards,
>Dave
>--
>Send mail for the `techdiver' mailing list to `techdiver@aquanaut.com'.
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