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Date: Sat, 23 Sep 1995 13:50:13 -0400
To: Carl Heinzl <cgh@ma*.ai*.mi*.ed*>
From: dlv@ga*.ne* (Dan Volker)
Subject: Re: Challenge to present assumptions on deco theory
Cc: techdiver@terra.net


Hello Carl,
 Average untrained men and women (non-athletes) will typically have VO2 max 
values of about 45 and 35 ml/kg body weight, and the highest  values in 
trained athletes are on the order of 90 and 80 ml/kg body weight (for males 
and females, respectively). 

If an average non -athletic person (45 to 35 ml/kg) were to drastically 
increase their body weight from the average weight, you can see how this 
would place their VO2 max at very low levels, and that gas exchange would 
not occurr as predicted for "average divers". However, as you can see from 
the training values, you could increase your VO2 max through training, and 
even with high body weight a person may attain levels not significantly 
below average, if the body weight is not too far above average.

Realistic goals for people with NO real aerobic conditioning (a great many 
scuba divers!!!) would be an increase of approximately 20% for their VO2 max 
after a period of several months of quality aerobic training 
(cycling;running;x-country skiing; skating, etc., if each is performed for 
an optimal 1 to 2 hours a day for 4 to 5 days per week). And don't let any 
one in a Scandanavian Health Spa sell you on a 20 minute, three time per 
week circuit at their gym...its bullshit. It takes 20 minutes for your 
aerobic/enzyme system just to turn on, lot less to train it.

Hope this helps,
Dan

P.S.
Try to make the Doppler workshop...We'll also be doing some kick ass dives 
you'll never forget! 

>
>
>
>Hmmm - I'd like to get tested to see what my VO2 max is - perhaps I'll
>ask my doctor to have this test done.  What are typical ranges for
>various lifestyles?
>
>-Carl-
>
>
Dan Volker
SOUTH FLORIDA DIVE JOURNAL
http://www.florida.net/scuba/dive
407-683-3592

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