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Quote from: smart on 14/04/2021 22:03:45 hypobaric hypoxia What is hypobaric about it?Or are you just stitching "sciencey sounding words" together?Quote from: smart on 14/04/2021 22:03:45Chronic/intermittent mask wearing does alter systemic oxygen and CO2 iThe evidence makes it clear that your claim is false.Quote from: smart on 14/04/2021 21:48:51Anyway, my research found reliable evidencesCite it , or shut it.
hypobaric hypoxia
Chronic/intermittent mask wearing does alter systemic oxygen and CO2 i
Anyway, my research found reliable evidences
that simply blocking your nose and mouth do affect breathing.
Moreover its very unfortunate that this forum is being condemned to such evil deceptive thread hijackings by people that try to convince me that 2+2=5.
Quote from: smart on 14/04/2021 23:30:08 that simply blocking your nose and mouth do affect breathing.Except that the kind of masks encouraged during the pandemic are not "blocking" your nose and mouth. They are porous. They allow gases in and out.
Moreover its very unfortunate that this forum is being condemned
Yes they do allow O2 and CO2 exchanges except they also alter the respiratory rate accordingly.
I thought the fact that cases rose even though mask wearing was mandatory proved that.
Quote from: Bored chemist on 14/04/2021 22:31:41Quote from: smart on 14/04/2021 22:03:45 hypobaric hypoxia What is hypobaric about it?Or are you just stitching "sciencey sounding words" together?Quote from: smart on 14/04/2021 22:03:45Chronic/intermittent mask wearing does alter systemic oxygen and CO2 iThe evidence makes it clear that your claim is false.Quote from: smart on 14/04/2021 21:48:51Anyway, my research found reliable evidencesCite it , or shut it.You and Kryptid are deceitfully short-minded, perhaps because it goes inline with the policies on this forum. I have no motivations in trying to discuss science with people not able to understand that 2+2=4 or that simply blocking your nose and mouth do affect breathing. There is basic science manuals for this online and elsewhere. Moreover its very unfortunate that this forum is being condemned to such evil deceptive thread hijackings by people that try to convince me that 2+2=5. smart
Physiological effects of wearing facemasksWearing facemask mechanically restricts breathing by increasing the resistance of air movement during both inhalation and exhalation process [12], [13]. Although, intermittent (several times a week) and repetitive (10–15 breaths for 2–4 sets) increase in respiration resistance may be adaptive for strengthening respiratory muscles [33], [34], prolonged and continues effect of wearing facemask is maladaptive and could be detrimental for health [11], [12], [13]. In normal conditions at the sea level, air contains 20.93% O2 and 0.03% CO2, providing partial pressures of 100 mmHg and 40 mmHg for these gases in the arterial blood, respectively. These gas concentrations significantly altered when breathing occurs through facemask. A trapped air remaining between the mouth, nose and the facemask is rebreathed repeatedly in and out of the body, containing low O2 and high CO2 concentrations, causing hypoxemia and hypercapnia [35], [36], [11], [12], [13]. Severe hypoxemia may also provoke cardiopulmonary and neurological complications and is considered an important clinical sign in cardiopulmonary medicine [37], [38], [39], [40], [41], [42]. Low oxygen content in the arterial blood can cause myocardial ischemia, serious arrhythmias, right or left ventricular dysfunction, dizziness, hypotension, syncope and pulmonary hypertension [43]. Chronic low-grade hypoxemia and hypercapnia as result of using facemask can cause exacerbation of existing cardiopulmonary, metabolic, vascular and neurological conditions [37], [38], [39], [40], [41], [42].
There is some evidence that the use of surgical masks can induce mild hypoxia with a low level of activity (e.g. performing surgery) with prolonged use. There is no evidence that this decrease in oxygenation is clinically significant. The degree of hypoxia associated with surgical mask use, N-95 mask use, or the combination at rest and with exertion is unclear and warrants further investigation, particularly given the current widespread use of both due to the COVID-19 pandemic. Our working hypothesis is that there is a decrement in oxygenation with the use of a mask with exertion. The general public is being advised to wear a mask, including those with pre-existing pulmonary disease and heart disease. If there is evidence of a statistically significant decrease in oxygen saturation with short duration mask use with exertion, then further studies on patients at risk for decompensation due to mask-induced hypoxia is warranted. Our working hypothesis is that there is a decrement in oxygenation with the use of a mask with exertion.
3. Myth: Wearing a mask will increase the amount of carbon dioxide I breathe and will make me sick.For many years, health care providers have worn masks for extended periods of time with no adverse health reactions. The CDC recommends wearing cloth masks while in public, and this option is very breathable. There is no risk of hypoxia, which is lower oxygen levels, in healthy adults. Carbon dioxide will freely diffuse through your mask as you breathe.
3. Myth: Wearing a mask will increase the amount of carbon dioxide I breathe and will make me sick.
Fact check: Breathing through a face respirator or surgical mask will decrease oxygen and carbon dioxide consumption.
Note that this is out of scope from the original thread.
Consequently, is dopamine-mediated avoidance conditioning a reversible fear-extinction learning paradigm?
For people interested in stress-induced avoidance conditioning a separate thread about this topic is available here: <<<link removed>>>
Well, you don't consume carbon dioxide, so that says a lot about that "fact check" of yours...
If your question is whether people will willingly stop wearing masks once the pandemic is over, the answer is obviously yes. I take my mask off whenever I get home.
I noticed as well that many people are dreaming that this pandemic scam will end someday.
Thats incorrect. Even without rebreathing through a surgical mask a small percentage of CO2 will get inhaled.
pandemic scam
In other words, the hypoxia-mediated
I believe this type of stress-dependent conditioning do promotes...
Yes, but you don't "consume" it like you consume oxygen. It's a waste product, not a vital gas. Besides, following your logic, shouldn't the face mask increase carbon dioxide consumption instead of decreasing it?
i believe both O2 and CO2 are essential particles that are being inhaled during normal respiration.