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#1
February 26th, 2002
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I am thinking of devising an experiment into CO2 tolerance. Although very new to freediving, it has grasped me and I have become very interested!
A question to think about: How do we tolerate CO2. Is it a case where everyone can only tolerate a certain amount, but the build up of CO2 is slower in some than others (resulting in longer breath holds) or is it that people can tolerate different amounts? The results would have implications for freedive training - should we be trying to increase our tolerance to CO2 or be training to try and produce less. A way of testing this would be to get a group of people to do a maximal breath hold. However at the end (before inhaling) each subject would exhale into a gas analyser to measure CO2 concentrations. Any opinions would be appreciated 
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