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From: Scaleworks <Scaleworks@ao*.co*>
Date: Fri, 6 Mar 1998 11:28:54 EST
To: dlv@ga*.ne*, CAPTZEROOO@ao*.co*, john.taylor@cs*.co*.uk*
Cc: wwm@sa*.ne*, brownies@ne*.ne*, GIRVINE@bl*.ne*,
techdiver@aquanaut.com
Subject: Re: Why Obesity in deep tech diving is a contraindication---gas exchange, revi

Hi Dan,

A question on gas exchange. How does VO2 max figure into this discussion? Is
not VO2 max calculated at the extreme high end of exertion? How does gas
exchange vary in people with different levels of conditioning while at rest?
Are not the dives you describe performed by George, performed in a state of
suspended animation ( referring to your comments on his physiological control
through Yoga techniques) deep penetration scooter dives, drift dives? Where is
the effort, and high end exertion that would bring VO2 max into play? If gas
exchange is not substantially different at rest at sea level, between the
various stages of conditioning in the control group, would it not be
proportionally the same at rest at 8?9?10? atmospheres?. Who dives to 250" and
rides a bike? Swims laps? Runs a marathon?

Best regards,
Kevin
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