Sharky1948
Contributor
Soggy:Heh...the same bunch of people who want a gauge without computer functions, perhaps?
And then we strap on an argon inflation bottle to compensate for the lack of computer functions!
Welcome to ScubaBoard, the world's largest scuba diving community. Registration is not required to read the forums, but we encourage you to join. Joining has its benefits and enables you to participate in the discussions.
Benefits of registering include
Soggy:Heh...the same bunch of people who want a gauge without computer functions, perhaps?
mhedman:OK, so here it is. It's a cultural difference. I come here from the Caribbean where dive shops dive. Diving here is gear intensive so that's where everyone's focus is. I don't care about a stupid computer. I'm going to paste in a piece from an article that may help. It talks a little about ideal weight and about how in the rest of the world, people that are out of shape would be excluded from diving. That is a practice implemented by the dive shops, instructors, and the industry.
May 3, 2007
Ideal Body Weight for Diving, Scuba Calories
Filed under: Interesting News scubadoc @ 2:14 pm
In response to a question about diving and obesity - here is an answer giving the ideal body weight for diving:
Edmonds, in the book, Diving and Subaquatic Medicine, states that weight should be less than 20 % above the average ideal weight for age, height and build. Obesity is undesirable because it increases the risk of decompression illness, there being an increase in nitrogen absorption of 4.5 times in fat. Sport diving is more lenient than commercial in this regard in that the bottom times can be reduced according to the percentage that the candidates weight exceeds that expected for height and build.
Body mass index (BMI) is a method for determining the percentage of fat. It is determined by weight in Kg divided by height in meters squared.
In some areas of the world where medical fitness is more stringently regulated than the US, a high BMI (body mass index) would deter one from diving. Complicating conditions of adiposity include diabetes mellitus, dyslipidemia or hypertension and their associations with coronary artery disease. The BMI is important to divers due to the fact that people with high BMI are more prone to coronary artery disease and an untoward coronary event while diving. A BMI above 30 kg/m2 is thought to be excessively risky for diving. Of course, measured %BF can sometimes show that the diver is quite large and muscular and this needs to be taken into consideration. Figure your BMI by going to this web site:
http://www.nhlbisupport.com/bmi/bmicalc.htm
Racket:What exaclty does this have to do w/ a computer? I agree that there are way too many overweight divers. Many of them are better divers than I am, so who am I to judge?
Marek K:. A 250% difference isn't insignificant, especially if you've got a budget or are also buying other equipment.
--Marek
Well, the close-to-$100 price just over a year ago was a closeout price from an authorized on-line merchant for the Oceanic Veo 100. And the $250 price was for low-end hockey-puck Oceanic and Aeris nitrox computers, also offered on-line at the same time by (mostly) authorized merchants -- but LP were also in the same ballpark, if I remember.Racket:Yes, but you are comparing outdated, internet auction prices to an LDS. The gap between an air only and air/nitrox would be much smaller at an LDS.
+1Sharky1948:1) Oxygen is not flammable and is only toxic when breathed at partial pressures and elapased times which exceed CNS tox or full body (pulmonary) tox limits. As already pointed out, air is EAN 21.
2) The best prevention against DCI is proper hydration while diving within table or computer limits. Yes, fat tissue absorbed nitrogen more readily than many tissues; but, other variables are more highly associated with DCI.
This sounds more like a rant against an individual (the sales person) than an informed opinion about Nitrox.
Just my 2 cents.
I thought the best prevention from DCS was to hydrate before a dive...mhedman:I went to a local shop today...snip!...
Oxygen is a flammable and toxic substance. What happens when Ooops, you discover you've gone a little too deep? Are the shops really worried about safety? .
The best prevention against getting the bends is not being Fat.
Or carrying too much gear (heavens). I don't see any of the shops telling people they need to get in shape! Hell NO!
...snip!...