Como poderá ver em baixo foram vários artigos apresentados no sentido de que, a regra já não se aplicará uma vez que os computadores de mergulho modernos são capazes de recalcular os seus mergulhos independentemente do perfil seleccionado, e, mantendo-se dentro dos limites não descompressivos (NDL).
Os estudos foram comprovados pelas entidades:
- American Academy of Underwater Sciences,
- DAN,
- DEMA
- Dive Training magazine.
Independentemente se acha que deverá manter o conservadorismo da Regra "Antiga", esteja informado(a) sobre os estudos mais recentes.
October 18, 2006
Announcing a major breakthrough in recreational diving thanks to dive computers and underwater scientists.
One of sport diving's most sacred rules has been challenged and found lacking: the prohibition against reverse dive profiles (following a shallow dive with a deeper one) that resulted in a phrase memorized by millions of divers: "Always do your deepest dive first."
Well, it turns out, if you're using a dive computer for multilevel diving, you can do your dives in any order you wish. Of course, use your dive computer intelligently and stay within the no-decompression limits. Yes, this reverse profile is fine—50 feet for 45 minutes followed one hour later by a dive to 90 feet for 20 minutes. The U.S. Navy tables would require an 18-minute decompression stop at 10 feet, and the PADI RDP does not allow for the second dive, as it is off the tables. All modern dive computers allow for these reverse profile dives.That's the conclusion of the "Reverse Dive Profiles Workshop" conducted at the Smithsonian Institution in Washington, D.C. Under the guidance of the Smithsonian's Michael Lang, the American Academy of Underwater Sciences, DAN, DEMA and Dive Training magazine, 49 leaders from a cross section of diving gathered to listen to 29 scholarly papers delivered over a two-day period, followed by eight discussion sessions to hammer out consensus findings.
The conclusions of the workshop are historic. Not only do they provide greater freedom for experienced computer divers to plan and execute multilevel dives; but the broader impact will likely be that the entire dive industry will take a more open-minded look at other rules of diving, skills and procedures, and then ask "Why?"
in: scubadiving.com
Controversial Reverse Dive Profiles
The May issue of Undercurrent published the results of a 2005 study conducted by Australian researchers Edmonds, McInness, and Bennet meant to refute the conclusions of the 1999 Reverse Dive Profile Workshop. In that workshop, held at the Smithsonian Institute and sponsored by DAN, DEMA, the American Association of Underwater Sciences (AAUS), and Dive Training magazine, 49 participants concluded that because of the lack of scientific evidence prohibiting reverse dive profiles (RDPs), they found no reason to recommend a prohibition against them. As Undercurrent reported in May, the only caveats were that RDPs should occur within the no decompression limits for recreational diving (130 feet), and depth differentials should be no greater than 40 feet. Although some participants didn’t agree that the prohibitions against RDPs should be abolished completely, all agreed on these restrictions to remain conservative and reach consensus.
in: Blue Planet Divers: Controversial Reverse Dive Profiles
