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Old 03-07-2012
andyinnorway andyinnorway is offline
Senior Member
Join Date: Mar 2011
Posts: 1,680

Maybe we can get back to basics with breathing since it is the thing that causes the most mysteries in freestyle swimming. (if only snorkels or even hydrodynamic breathing helmets were permitted).

An average adult male has a lung capacity of about 5 litres of air. Of which 20% is oxygen so that means 1 litre of oxygen per breath.

the resulting questions for me then are:-

1. how much oxygen do we need to perform a set number of strokes at a given workload (any scientific info there?)

2. how much of your 5 litres do you fill up with when you take a breath?

3. what is the rate of exhale (answered by Terry 20% during stroke cycle, 80% clearout before breath?)

as an aside does anyone swim long distances on 6 stroke cycles or more?
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