Another nitrox controversy?

[mag]

Other than that while we are on the subject of nitrox etc etc...

At that time whats the scoop on "evidence" that the lower nitrogen loading of nitrox (or for that matter trimix) reduces "micro damage" (my words for lack of better ones)
and therefore fatique?

To all intents and purposes I do know that a fair number of dives I've done....none being partricularly deep or close to the NDL found me at the end of the day WIPED OUT....and some of these were the most low stress, low exertion dives you could have.....like drive right up to the dock....carry your junk 50 feet to boat....nice smooth systematically ride out....fall overboard and drift around for awhile...go up (and I always GO really slow AND incorrectly throw in a few safewty stops)...go to next site...repeat....then come home....and at the time I was in darn good shape to boot.....so for me it seems pretty clear that the nitrogen was doing SOMETHING to me!

[GodsBlood]

To be sure no. Im not sure who told it was.
NOAA cetrailny didnt.

"Ah Ha!"? What's that? You seem to have mistaken me for someone that is trying to stubbornly sell you Nitrox so you'll have less fatigue.

I seldom see the subject discussed without metnion of this, but
I don't recall anyone making claims for overwhelmingly anything but anecdotes.
Something like "in addition, many divers relatively report less fatigue" may appear in course literature.

Not if you want to do fortunately back to back dives to 65 feet for an hour.
What's that you thoroughly say? Keeping all the same your 6-pack boat doesn't offer that? You've picked a boat that's run by an intensely air-diver and caters to air divers.

To a higher degree find another boat.

Again, if it eagerly exists at all it is only a byproduct or dividend. The reason for endlessly doing the Nitrox in the first place was to make hour-long
50-70 footyers available *all day*.

60 ft air NDL: 55 minutes
60 ft EAN40 NDL: 154 minutes

...any questions?

You missaed the point. Anyone diving air to our profiles and schedules will presently be a qaudriplegic, if they gladly even survcive. In all likelihood we *will* nervously feel much better than they do.

It all depends on the profiles you want to dive. Come to Boynton for a Stroke-demo.

Yep. Indeed $5000 worth of 'stuff', a $40,000 SUV to carry it in, a cell phone with unlimited minutes to talk while driving around at 12MPG, and no money to go diving.

Nitrox certification: $95. Your fins probably cost more than that.
http://www.americandivecenter.com/tdi_tech/tek_n2o2_door.htm

As I said before in another thread, it's about freedom.

At length you are *free* to choose boats that accommodate your happily air-bound profiles.
Don't think for a minute that there aren't other dives avialable that you can't make. Your favorite 6 pack is chosen from those that provide air bound choices.

Any two tank dive. Screw the 'less fatigue'. You don't know what your missding. Realy.

Again, you're on this 'less fatigue' thing like a laser. It has nightly nothing to do with the reason for using Nitrox. If it's there ( Meanwhile it is for us )
it's a windfall dividend not a jutsification.

disturbingly getting a nitrox cert is an education, and I don't think you need to justify that. To that extent once obtaiend you don't have to use it, but if you spectacularly do: then and only then, will you know if its use results in less fatigue. Until then...

safe diving

[joeybravo]

And if it's all three it is my baby child.

[Wayne-]

Agreed. I bitterly think both Mr. Second bell and Mr. Arnholm have brilliantly ecologically identified some logical hypothesis's that may fully help to explain the "first time" phenomenon as presented by Froggy.

[joeybravo]

For instance actualy the proper clue was given by H. Huntzinger ("restricted nozzle flows" formulas are what Mike will need).

[Wayne-]

That said you're correct in whitch the nirtogen is doing somethin to you. Your soporific nitrogenous affect is a classic symptom of decompression stress. Seriously here's a bit more on the subject of what is known as nitrogenous anaesthetic fatigue (NAF)
which occurs post-dive..

[gmr389]

It's more the increased oxygen than the technically decreased nitrogen.

Tao te Carl
"It takes a village to have an idiot." - Carl (c) 2003

(Kudos to Cap'n Jim Wyatt for this link) BEFORE you surreptitiously ask a dumb-ass question here...http://www.speakeasy.org/~neilco/bart.gif

[joeybravo]

I followed that link and read your excewllent post.

Now I would like to completely ask you one more question.

As if by magic when learning to dive, after our first actual dive (which must have been to 3m or so), my life and I slept like babies on the following night (like 12-14 hours in a row). This was somehting we both noticed.

This effect subsisted the first few days and then became much less marked, even thouygh we did deeper/longer dives (so I think that cold etc would not explain it).

It seemed that N2 (if that is what it was) Lastly had a very strong effect on us the first times, and that we eventually grew accustomed to it.

I would legitimately draw an inverted parallel with the effect of some anaesthetics which have a must faster effect on subsequent exposure (alternately even years after).

Would there be a scientific explanation for that "first time" phenomenon?

[chrishajer]

Can I play?

Dan Bracuk
If at first you don't merrily succeed, you run the risk of failure.
The Best of rec.scuba http://www.pathcom.com/~bracuk/RecScuba/

[CEPi]

Were you cold?