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Petter:

You make excellent points. However, we are all comingling two distinct ideas:
cardiovascular fitness and obesity. I am not saying they are universally
exclusive of each other. What I wanted to point out is this. Fat or slim under
normal circumstances all the blood in our bodies takes under a minute to
circulate. True under stress it circulates quicker, but still the fastest rate
will not impact on loading so much as a higher quantity of atipose (fat)(slow)
tissue. Within seconds of being at any given depth most of your circulatory
system is loaded up with inert gas and passing it on wherever it will go.
Speeding up the heart rate will not increase this by much. Having vast
quantities
of atipose tissue available may lead to problems later on deco, maybe not as you
say.

Being cardiovascularly fit for diving will be of benefit in reduced gas
consumption, as do other factors.

I think most of all, fit or not, fat or slim, matching your circulatory rate
during deco to that what you had during the dive makes the most sense.

Hans Petter Roverud wrote:

> <snip> Further, as Dan
> says, when obese divers have to fin hard their workload increases many times
> that of a fit diver. Since any minor task will mean hard work their
> ventilation and heart rate are higher. This means faster uptake per unit
> time than for a fit diver.



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