Atmospheric oxygen levels

[ramacher]

Watched an interesting documentary about pre-historic animals and during a certain era they were discussing on why almost all of the supporting life forms were gigantic and huge. It was mainly due to the higher oxygen levels in the atmosphere which were at around 33 percent oxygen and the rest nitrogen. Today the oxygen levels are around 20 percent. With higher oxygen levels in the atmosphere, evidently animals blood vessels were smaller since not as much oxygen needed to flow through since the air was richer allowing more muscle to grow, hence why you would get huge bugs and mammals etc. Can you mimic this today in a room where the air is controlled to a certain oxygen level? I'm sure it can be done by scientists.

[lovbyts]

In other words you want to seal your house or at least your bedroom so it has a higher oxygen level hoping it will make you grow bigger? lol

Some people (mainly rich) have hyperbaric oxygen bed.

[Bonaparte]

Doesn't add up. You can only reach 100% hemoglobin saturation (which is feasible at 21% O2, ie. room air).
More oxygen does not equal more growth.

[diesel101]

In other words you want to seal your house or at least your bedroom so it has a higher oxygen level hoping it will make you grow bigger? lol

Some people (mainly rich) have hyperbaric oxygen bed.
<img src="http://forums.steroid.com/attachment.php?attachmentid=148027"/>

I have my house sealed but that is to keep the screams quite so the neighbors don't get suspicious!

[lovbyts]

I have my house sealed but that is to keep the screams quite so the neighbors don't get suspicious!

That really is not a good idea because it also holds in waste your and promotes mold growth.

A basement works much better for that purpose because the concrete walls and ground makes excellent sound barrier and you can easily make your floors more soundproof.

Not that I have any experience or anything. ;-)

[diesel101]

Construction will be starting tomorrow

[Times Roman]

the air was also much denser, thereby larger animals and insects were able to obtain flight with smaller wings...

Watched an interesting documentary about pre-historic animals and during a certain era they were discussing on why almost all of the supporting life forms were gigantic and huge. It was mainly due to the higher oxygen levels in the atmosphere which were at around 33 percent oxygen and the rest nitrogen. Today the oxygen levels are around 20 percent. With higher oxygen levels in the atmosphere, evidently animals blood vessels were smaller since not as much oxygen needed to flow through since the air was richer allowing more muscle to grow, hence why you would get huge bugs and mammals etc. Can you mimic this today in a room where the air is controlled to a certain oxygen level? I'm sure it can be done by scientists.

[GSXRvi6]

Doesn't add up. You can only reach 100% hemoglobin saturation (which is feasible at 21% O2, ie. room air).
More oxygen does not equal more growth.

True hemoglobin saturation isn't possible at .21 PPo2, it's close, but the curve to true hemoglobin saturation is pretty nuts. I have several papers I keep for one of my hobbies, look up Oxygen Window, it goes into detail of hemoglobin saturation and a little thing called "the oxygen window". One trick divers do to speed the evacuation of dissolved inert gases is to attempt to maximize the pressure delta between arterial and venous sides by going after 100% hemoglobin saturation (Co2 is highly soluble and can create a large pressure delta to "vacuum" inert gases from tissues). 98%, 99%, 99.5%, that's easy. 100% is not.

A patient on a demand regulator breathing 100% oxygen will not obtain 100% saturation, that requires positive pressure mask that covers the face and nose (I forgot the name of it)

I've repeatedly pressurized my body to several atmospheres of pressure using gas mixes that contain less than 21% oxygen and significant amounts of helium, so while I do not carry a PHD in the affects of inert gas on the body, it's in my best interest to learn all that I can (I'm still alive for starters).

Funny enough I purchased theses gases for "research purposes"

And FYI: Oxygen is toxic and WILL kill you, there is a unit called Oxygen Toxicity Units, 1 ATA of o2 for one minute = 1 OTU, if memory serves the limit is 1440 OTU per day, exceeding oxygen doses will cause Pulmonary oxygen toxicity, the first symptoms start with irritation in the chest, and can lead to coughing, pain and wheezing (been there done that, too many oxygen decompression's back to back) and CNS toxicity, convulsions, muscle twitches etc. I've been close, I've had my legs and lips twitching. Scary shit.

[Bonaparte]

True hemoglobin saturation isn't possible at .21 PPo2, it's close, but the curve to true hemoglobin saturation is pretty nuts. I have several papers I keep for one of my hobbies, look up Oxygen Window, it goes into detail of hemoglobin saturation and a little thing called "the oxygen window". One trick divers do to speed the evacuation of dissolved inert gases is to attempt to maximize the pressure delta between arterial and venous sides by going after 100% hemoglobin saturation (Co2 is highly soluble and can create a large pressure delta to "vacuum" inert gases from tissues). 98%, 99%, 99.5%, that's easy. 100% is not.

A patient on a demand regulator breathing 100% oxygen will not obtain 100% saturation, that requires positive pressure mask that covers the face and nose (I forgot the name of it)

I've repeatedly pressurized my body to several atmospheres of pressure using gas mixes that contain less than 21% oxygen and significant amounts of helium, so while I do not carry a PHD in the affects of inert gas on the body, it's in my best interest to learn all that I can (I'm still alive for starters).

Funny enough I purchased theses gases for "research purposes"

And FYI: Oxygen is toxic and WILL kill you, there is a unit called Oxygen Toxicity Units, 1 ATA of o2 for one minute = 1 OTU, if memory serves the limit is 1440 OTU per day, exceeding oxygen doses will cause Pulmonary oxygen toxicity, the first symptoms start with irritation in the chest, and can lead to coughing, pain and wheezing (been there done that, too many oxygen decompression's back to back) and CNS toxicity, convulsions, muscle twitches etc. I've been close, I've had my legs and lips twitching. Scary shit.

IDK about all that diving science, but I do know that hyperoxemia with high-flow 02 (using a non-rebreather) will oversaturate the blood, where the excess oxygen forced into the bloodstream will form free-radicals that are toxic and cause vasoconstriction.
Either way, we aren't suffering from oxygen deprivation here on earth at 21%.
Elephants and whales are doing just fine, and it seems more likely that evolution and food sources played a role in biological size/scale.

And the the positive pressure mask you're talking about sounds like a c-pap (continuous positive airway pressure) or bi-pap (biphasic positive airway pressure) device.

[GSXRvi6]

IDK about all that diving science, but I do know that hyperoxemia with high-flow 02 (using a non-rebreather) will oversaturate the blood, where the excess oxygen forced into the bloodstream will form free-radicals that are toxic and cause vasoconstriction.
Either way, we aren't suffering from oxygen deprivation here on earth at 21%.
Elephants and whales are doing just fine, and it seems more likely that evolution and food sources played a role in biological size/scale.

And the the positive pressure mask you're talking about sounds like a c-pap (continuous positive airway pressure) or bi-pap (biphasic positive airway pressure) device.

nah it's not a cpap, I have one of those for apnea, it's a clear mask that goes over the mouth and nose and delivers a constant feed of o2 at pressure (very slight pressure) vs like a scuba regulator that you have to inhale on for it to deliver gas.

CNS (free radical hell) starts to kick in for most people at around 2.0 PPo2 (exposure time is the other factor). At .21 PPo2 we are good go to, one atmosphere, 21% o2 = .21 ppo2 or the "dose" of o2. When you sit at 20 feet of fresh water your at 1.6 atmospheres of pressure absolute (ATA), breathing pure oxygen at 20 feet gives you a ppo2 of 1.6. Most people can tolerate that dose for about 45 minutes and be in the safe zone, beyond that free radicals start to build up enough that your playing Russian roulette with a seizure under water.

OTU's are used in hyberbaric medicine, saturation diving, and extreme technical diving

normoxic mixes are 18% and higher (.18 ppo2 at 1 ATA) you start to go hypoxic at .16 and below, REAL problems begin at around .14 and down, varies someone by individual. .12 and your screwed.

.12 however becomes .24 when you dive do a depth of 33 feet fresh water (2 atmospheres of pressure), that's well above the required .18 so your body survives just fine as long as you stay down :-)

Mixtures of 6% is not unheard of, when using extremely hypoxic mixes one must use "travel gases" to get from the surface down to depth, otherwise you pass the hell out from lack of "dose"

It's kind of like ML vs MG, ML is volume, MG is dose, % of gas is just that, a fraction of gas, to know what your "dose" is you must know the pressure to determine the dose of oxygen (or other)

Sorry, bit off topic but some shit brings the nerd out in me.

[lovbyts]

nah it's not a cpap, I have one of those for apnea, it's a clear mask that goes over the mouth and nose and delivers a constant feed of o2 at pressure (very slight pressure) vs like a scuba regulator that you have to inhale on for it to deliver gas.

CNS (free radical hell) starts to kick in for most people at around 2.0 PPo2 (exposure time is the other factor). At .21 PPo2 we are good go to, one atmosphere, 21% o2 = .21 ppo2 or the "dose" of o2. When you sit at 20 feet of fresh water your at 1.6 atmospheres of pressure absolute (ATA), breathing pure oxygen at 20 feet gives you a ppo2 of 1.6. Most people can tolerate that dose for about 45 minutes and be in the safe zone, beyond that free radicals start to build up enough that your playing Russian roulette with a seizure under water.

OTU's are used in hyberbaric medicine, saturation diving, and extreme technical diving

normoxic mixes are 18% and higher (.18 ppo2 at 1 ATA) you start to go hypoxic at .16 and below, REAL problems begin at around .14 and down, varies someone by individual. .12 and your screwed.

.12 however becomes .24 when you dive do a depth of 33 feet fresh water (2 atmospheres of pressure), that's well above the required .18 so your body survives just fine as long as you stay down :-)

Mixtures of 6% is not unheard of, when using extremely hypoxic mixes one must use "travel gases" to get from the surface down to depth, otherwise you pass the hell out from lack of "dose"

It's kind of like ML vs MG, ML is volume, MG is dose, % of gas is just that, a fraction of gas, to know what your "dose" is you must know the pressure to determine the dose of oxygen (or other)

Sorry, bit off topic but some shit brings the nerd out in me.

Actually the cpap machine for sleep apnea does not raise the 02 level at all. It's not an oxygen generator, it only uses the same exact 02 as is in your room. I know, I also have one of these and have talked to the doctor about it. I have also had experience with 02 generators, big difference between the two.

[lovbyts]

Construction will be starting tomorrow

You might want to stagger the 2x4s also. You dont want the 2x4 attached to the inside wall also attached to the outside wall. This makes it so the sound does not transfer though the walls easily and your insulation is a little thicker.

You want it to look like this.
Any bars or chains should be welded, no bolts. Bolts can come loose over time.
Don't ask me how I know all this.

[austinite]

That must be why I get bigger in Vegas.

[lovbyts]

That must be why I get bigger in Vegas.

No it's because you visit all the strip clubs and all the sexy naked girls giving you lap dances cause excess blood flow to your junk. That's what you were talking about getting bigger wasn't it?

[austinite]

No it's because you visit all the strip clubs and all the sexy naked girls giving you lap dances cause excess blood flow to your junk. That's what you were talking about getting bigger wasn't it?

Yes. That makes sense.

[Bonaparte]

Actually the cpap machine for sleep apnea does not raise the 02 level at all. It's not an oxygen generator, it only uses the same exact 02 as is in your room. I know, I also have one of these and have talked to the doctor about it. I have also had experience with 02 generators, big difference between the two.

My Cpap plugs into a high flow 02 regulator line and delivers 30 lpm of 100% O2

[Black]

My Cpap plugs into a high flow 02 regulator line and delivers 30 lpm of 100% O2

What the hell did you just call me?!

[Honkey_Kong]

If I recall, what Ramacher was referring to were those huge extinct bugs. They had a different breathing system to us. I recall most insects have an open breathing system where air in tracheal tubes diffuse. It's not very efficient of a breathing system and those huge ancient insects under the lower oxygen levels just couldn't get enough air to survive so they either slowly evolved (as the oxygen levels changed) in to smaller species or they just went extinct entirely.

I don't think it'd be a good idea to seal your house off and pump pure oxygen in it. At first I believe it'd be toxic (as others mentioned) and on top of that, you'd be asking for a fire. Look at the Apollo mission.

[GSXRvi6]

Actually the cpap machine for sleep apnea does not raise the 02 level at all. It's not an oxygen generator, it only uses the same exact 02 as is in your room. I know, I also have one of these and have talked to the doctor about it. I have also had experience with 02 generators, big difference between the two.

yea I'm on cpap, it's just pressure, there are those little silver and green topped o2 cylinders you see on old peoples chairs, there is a mask for use with those cylinders to deliver a constant low pressure o2 feed.

On a side note, I've been doing some searching and it's amazing how many of us on TRT are also on CPAP's...

[Shol'va]

That must be why I get bigger in Vegas.

It will only do you good as long as you stay there. Remember what happens in Vegas stays in Vegas..lol