Hi freedivers,
this is an article from last year but once somebody told me "teaching is reapeting", hein Christophe :-).
Next to that I would like to mention a new rule for surface intervals introduced by Richard Wonka, AIDA Instructor Trainer and very active AIDA education commission member. This is his formula:
| Dive Time X maximum pressure (in bar) = surface interval |
So I would encourage you (and especially the spearfishers among us) to follow Richard's formula. As he told me, the results of this calculation matches the hold formula (depth -in meter-/5) but it is also more conservative for longer dive.
Have a nice day!
Feli
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It is well documented that repeated breath-hold diving may cause neurological symptoms and even permanent brain injury. The nature of these injuries has been debated since the first anecdotal report
This has been bugging me for a long time. Decompression related injuries (DCS) have become a significant factor in advanced freediving and one way of reducing the risk of DCS is to work with ...
http://wefreedive.org/resources/78-miscellanea/177-simplify-the-surface-interval
Today's note on this topic from Richard Wonka