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Sean Creagan wrote: > It is NOT very POSSIBLE TO GET QUITE BENT when breath-hold >diving. There are basicly only two ways to get bent due to breath-hold >diving. >1) After a significant amount of Nitrogen tissue loading due to a >previous SCUBA dive. The microbubbles which may be present in your >bloodstream (non-symptematic DCS) after a SCUBA dive may become >compressed at depth on a breath-hold dive and bubble out of solution upon >a quite ascent lodging in joints, etc. (DCS onset). Only a few cases >reported of this kind. >2) Repeated breath-hold dives to extreme depths (>100 ft) where the >cumulative time at depth nears and exceeds that of no-decompression >limits on tables (cases reported by Japanese women oyster divers who dive >to 100+ ft repeatedly) I'd say that number 2 pretty much covers it! I, at least, have made repeated free dives to ~100 fsw while using the technique outlined in my original post. Although I don't think that 100 fsw is the magic number. I recall a paper describing bends in free divers making repeated dives to 60 fsw (or was it 90?). There was even a case reported to this list some years ago of a free diver in South Africa who was bent making repeated free dives to the 100 fsw area. Does anyone know what happened to this person? >Other than these two situations, if you know anything about physics and >the gas laws, you would realize it is very difficult to get bent on a >breath-hold dive. The gases you breath in are at 1 atm, become >compressed at depth, and can only expand to what they where when you took >the breath (1 atm). My warning was not ment for people making a single dive to depth. If you have an argument to show why you can't get bent while making repeated free dives to depths less 100 fsw I'd be interested in hearing it. >I've read extensively about Jaque Mayol and >Francisco Ferreras Pipin (2 of the world's greatest breath-hold divers) >and their techniques If you have English language references I be interested in having them. I wanted to read Homo Delphinus but my French wasn't good enough. Barrie Kovish Vancouver, Canada
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