intercept them and politely say, ‘We distributed masks here—why aren’t you wearing one?’

[Yellowfin]

@bluehende
"After block randomisation, 18 patients were assessed without masks on first and 18 with masks on first. All 36 patients (online supplemental table 1) completed 6MWT both with and without masks. The participants covered a mean of 12.9 m (95% CI 4.5 to 21.4; p=0.004) lesser distance and had a larger drop in saturation (p=0.03) while on masks than when not wearing masks. The number of persons who had any rise in the Borg Dyspnoea Scale during peak activity was significantly different (table 1). A decline in SpO2 of 2% or more occurred in 14 participants without masks and in 19 with masks (p=0.3; Fisher’s exact test)."

Effects of face masks on oxygen saturation and functional measures in patients with connective tissue disorder-associated interstitial lung disease | Annals of the Rheumatic Diseases

I know you will say this an extreme example but still... this is after just 6 minutes so I assume that hours of wearing masks cannot be beneficial to the kids. I also fear that the younger kids may not adjust the masks properly, potentially afecting them more it may affect adults. Particularly early in the pandemic, people were wearing all kinds of masks, some of them really thick . I really did not like those, we have been using only surgical masks (once they have become plentiful)

 

[TUGBrian]

there is no need to tag me in every post where you feel attacked because someone disagrees with you. Especially when there is no actual "attack" happening.

 

[bluehende]

@bluehende
"After block randomisation, 18 patients were assessed without masks on first and 18 with masks on first. All 36 patients (online supplemental table 1) completed 6MWT both with and without masks. The participants covered a mean of 12.9 m (95% CI 4.5 to 21.4; p=0.004) lesser distance and had a larger drop in saturation (p=0.03) while on masks than when not wearing masks. The number of persons who had any rise in the Borg Dyspnoea Scale during peak activity was significantly different (table 1). A decline in SpO2 of 2% or more occurred in 14 participants without masks and in 19 with masks (p=0.3; Fisher’s exact test)."

Effects of face masks on oxygen saturation and functional measures in patients with connective tissue disorder-associated interstitial lung disease | Annals of the Rheumatic Diseases

I know you will say this an extreme example but still... this is after just 6 minutes so I assume that hours of wearing masks cannot be beneficial to the kids. I also fear that the younger kids may not adjust the masks properly, potentially afecting them more it may affect adults. Particularly early in the pandemic, people were wearing all kinds of masks, some of them really thick . I really did not like those, we have been using only surgical masks (once they have become plentiful)

As you said yesterday to me you should read your study.

Here are the cohorts.
Patients between 18 and 75 years of age with high-resolution CT (HRCT)-proven CTD-ILD and with Medical Research Council scale grades 1–3 dyspnoea and forced vital capacity (FVC) of less than 70% were included in this crossover trial. If FVC was >70%, patients were included only if the extent of involvement on HRCT was more than 20% of the lung. Patients requiring oxygen supplementation and with myositis or lower limb pain were excluded. Initial SpO2 was recorded and a standard 6 min walk test (6MWT) was carried out with and then without a standard three-layer surgical face mask.

I agree people with severe lung disease on a treadmill should probably not wear a mask. Even with that you notice the very small differences in a few patients.

Also from your article

Thus, the use of face masks reduced functional capacity and SpO2 during activity in patients with CTD-ILD. Even with the roll-out of COVID-19 vaccines around the world, masks remain the standard of care. We strongly advocate the use of masks for all, including patients with ILD, who may be at higher risk if they develop COVID-19. Although only CTD may not confer additional risk for COVID-19, the presence of ILD increases the risk of severe disease.

and

We reiterate that it is quintessential for these patients to continue wearing masks


and lastly

This study should not be misinterpreted as implying face masks should not be used by patients with CTD-ILD because this would risk COVID-19 infection, which would be very much detrimental to such patients. Continuous use of masks as well as other COVID-19 protocols is secondary to none.


Seems your study agrees with me and mask wearing.

 

[bluehende]

Here we go again.

Don't post false claims and I will stay quiet. Post false claims you should expect to be called on it. Of course people who make claims could put there big boy pants on and defend it. I almost always give my source.

 

[Yellowfin]

As you said yesterday to me you should read your study.

Here are the cohorts.
Patients between 18 and 75 years of age with high-resolution CT (HRCT)-proven CTD-ILD and with Medical Research Council scale grades 1–3 dyspnoea and forced vital capacity (FVC) of less than 70% were included in this crossover trial. If FVC was >70%, patients were included only if the extent of involvement on HRCT was more than 20% of the lung. Patients requiring oxygen supplementation and with myositis or lower limb pain were excluded. Initial SpO2 was recorded and a standard 6 min walk test (6MWT) was carried out with and then without a standard three-layer surgical face mask.

I agree people with severe lung disease on a treadmill should probably not wear a mask. Even with that you notice the very small differences in a few patients.

Also from your article

Thus, the use of face masks reduced functional capacity and SpO2 during activity in patients with CTD-ILD. Even with the roll-out of COVID-19 vaccines around the world, masks remain the standard of care. We strongly advocate the use of masks for all, including patients with ILD, who may be at higher risk if they develop COVID-19. Although only CTD may not confer additional risk for COVID-19, the presence of ILD increases the risk of severe disease.

and

We reiterate that it is quintessential for these patients to continue wearing masks


and lastly

This study should not be misinterpreted as implying face masks should not be used by patients with CTD-ILD because this would risk COVID-19 infection, which would be very much detrimental to such patients. Continuous use of masks as well as other COVID-19 protocols is secondary to none.


Seems your study agrees with me and mask wearing.

The study I posted before shows reduced physical capacity for that cohort who was on the treadmill wearing masks for only 6 minutes. The development of the kids depends on a variety of factors and I hope we are all in agreement that the oxygen intake plays a role. Breathing their own exhaled CO2 cannot be good. If you think your grandkids should be OK in few years after wearing masks for extended periods of time, fine with me. If you think your kids are not impacted in any way, let them keep them on permanently, no harm according to you so why bother taking them off. Others may not want to take the risk. Send this article to your adult children, maybe they will put 2 and 2 together for you:

"The researchers also found that improving ventilation rates, reducing CO2 concentration and increasing access to daylight in classrooms, improves pupils’ performance in the sense of speed, higher levels of attention and concentration and lower rates of absenteeism. "

Fresh air shown to improve performance of children in schools

New research has revealed that an optimum indoor environment with improved ventilation and increased daylight can improve the performance of children at school.

www.velux.com

To be clear, your comments were not based on any science that showed physiological and psychological impact on kids wearing masks for 7-10 hours a day. So your claims that you substantiate your comments with science are false and that does not change no matter how loud you are.

 

[jmhpsu93]

I have supported and practiced "masking up" and doing my part for the last 15 months. I believe in the effectiveness and science surrounding masks and believe they have saved countless lives. I totally agree that we all have had a responsibility to each other to do the right things to keep each other as safe as we can. I've been "all in" on the "we're all in this together" concept.

I do think, however, that the paradigm is changing, because I also believe in the science of vaccines. We now have very good vaccines that, while not 100% effective, are very close to 100% effective in preventing severe disease and death for those who are vaccinated. They also appear to greatly reduce the likelihood that a vaccinated person who is exposed can unknowingly spread the disease to others.

If someone chooses not to get these vaccines, do you and I still have the responsibility to keep THEM safe? They can get the vaccine now. We have enough supply. I eagerly got the "jabs" as soon as I could, but it seems to me, if someone chooses, for whatever reason, NOT to get the vaccine, they are assuming their own risk of illness and/or death. By getting the vaccine, you and I are still helping protect the unvaccinated since we are much less likely to spread the disease, but for how long should I still change my behavior to protect those who won't get the shot? They have a way to give themselves almost 100% protection from severe disease and death, so if they choose not to avail themselves of that, why should you or I try to protect them if they don't take the responsibility to protect themselves? IMHO, they are on their own. At some point, when the options are there to protect your own health, you have a responsibility to protect yourself, not rely on others to do so.

I realize less masking could put immunocompromised people, as I believe you said you are, at some greater risk, but when my late father-in-law was battling cancer and undergoing chemotherapy a couple decades ago, he made sure to avoid the most risky situations when he was immune compromised after treatments. But with these vaccines, thankfully, I think the evidence shows that the vaccines are still effective in protecting immunocompromised people to a great degree, so you will still have considerable protection when going about your normal life. (At least that's what our 26 yr old son's doctor told him about the vaccines. He has Crohn's disease.)

Reaching true "herd immunity" seems unlikely, but we seem to be close to reaching the point where the risk to vaccinated people will be next to nil. Do we still have a responsibility to keep protecting the vaccine-unwilling indefinitely?

This about sums up my view...couldn't have said it any better.

 

[bluehende]

Breathing their own exhaled CO2 cannot be good

from the cdc

COVID-19 ARCHIVED WEBPAGE

This historical page is not up to date. Find the latest on COVID-19.

www.cdc.gov

Mask use and carbon dioxide

Wearing a mask does not raise the carbon dioxide (CO2) level in the air you breathe


A cloth mask does not provide an airtight fit across the face. The CO2 completely escapes into the air through the cloth mask when you breathe out or talk. CO2 molecules are small enough to easily pass through any cloth mask material.

from johns hopkins childrens

Johns Hopkins All Children's Hospital

Johns Hopkins All Children’s Hospital is the top pediatric center in Florida, serving the Tampa Bay region and the west coast with expert specialty care for kids.

www.hopkinsallchildrens.org

MYTH: Wearing a cloth mask will make me sick because of carbon dioxide poisoning.

When you exhale, carbon dioxide leaves your lungs and exits the body through your nose or mouth. Carbon dioxide is a gas made up of small molecules.

https://www.novanthealth.org/healthy-headlines/no-your-child-will-not-get-co2-poisoning-from-wearing-a-mask

Can a mask make you sick, create CO2 buildup or exacerbate asthma?

No. I think there are a lot of fears out there and some misinformation. We know that wearing a mask does not cause asthma or exacerbate asthma. It does not cause carbon dioxide buildup.

And in case all of these scientific organizations know less than you an actual study; Note published in jama not some indian website.

Respiratory Function in Children Wearing Face Masks During the COVID-19 Pandemic

This cohort study examines whether the use of surgical face masks among children was associated with changes in respiratory function or signs of respiratory distress.

jamanetwork.com

Conclusions

This cohort study found that the use of surgical face masks among children was not associated with changes in respiratory function, including among children aged 24 months or younger. These findings may help promote the use of surgical masks among children, especially in view of the reopening of schools. Every precautionary measure against the diffusion of COVID-19 should be implemented. Furthermore, we think that children should be educated in the use of face masks by parents and school personnel. This may be associated with increased compliance with mask usage, especially among younger children. We do not know how long the present emergency will last, but we must prepare in case new lethal viruses should appear, possibly associated with increased adverse clinical outcomes among children.

So as one of the organizations said. Please stop spreading fear and misinformation.

 

[bluehende]

So your claims that you substantiate your comments with science are false and that does not change no matter how loud you are.

As well as the organizations including childrens organizations and the paper cited. Here are more.

New research at UH Rainbow studies the impact of face masks on heart ra

Researchers at University Hospitals Rainbow Babies & Children's Hospital (UH Rainbow) published new findings today that wearing a face mask -- either a cloth mask or a surgical mask -- did not impair the ability of subjects to get air in and out of their bodies.

www.eurekalert.org

CLEVELAND, Ohio - Researchers at University Hospitals Rainbow Babies & Children's Hospital (UH Rainbow) published new findings today that wearing a face mask - either a cloth mask or a surgical mask - did not impair the ability of subjects to get air in and out of their bodies.

Asthma | Coronavirus Guidance

The Asthma Center provides information for patients about COVID-19 and asthma.

www.cincinnatichildrens.org

Common Concerns about Wearing Face Masks

• Some people have been concerned about potentially harmful side-effects from wearing masks for long periods of time: retaining carbon dioxide or inability to get enough oxygen. But it's highly unlikely you'll suffer either of these wearing a cloth or gauze face mask. When you breathe out, the carbon dioxide will go through and around the mask and oxygen comes in. Surgeons wear face coverings all day without harm.

 

[Yellowfin]

from the cdc

COVID-19 ARCHIVED WEBPAGE

This historical page is not up to date. Find the latest on COVID-19.

www.cdc.gov

Mask use and carbon dioxide

Wearing a mask does not raise the carbon dioxide (CO2) level in the air you breathe


A cloth mask does not provide an airtight fit across the face. The CO2 completely escapes into the air through the cloth mask when you breathe out or talk. CO2 molecules are small enough to easily pass through any cloth mask material.

from johns hopkins childrens

Johns Hopkins All Children's Hospital

Johns Hopkins All Children’s Hospital is the top pediatric center in Florida, serving the Tampa Bay region and the west coast with expert specialty care for kids.

www.hopkinsallchildrens.org

MYTH: Wearing a cloth mask will make me sick because of carbon dioxide poisoning.

When you exhale, carbon dioxide leaves your lungs and exits the body through your nose or mouth. Carbon dioxide is a gas made up of small molecules.

https://www.novanthealth.org/healthy-headlines/no-your-child-will-not-get-co2-poisoning-from-wearing-a-mask

Can a mask make you sick, create CO2 buildup or exacerbate asthma?

No. I think there are a lot of fears out there and some misinformation. We know that wearing a mask does not cause asthma or exacerbate asthma. It does not cause carbon dioxide buildup.

And in case all of these scientific organizations know less than you an actual study; Note published in jama not some indian website.

Respiratory Function in Children Wearing Face Masks During the COVID-19 Pandemic

This cohort study examines whether the use of surgical face masks among children was associated with changes in respiratory function or signs of respiratory distress.

jamanetwork.com

Conclusions

This cohort study found that the use of surgical face masks among children was not associated with changes in respiratory function, including among children aged 24 months or younger. These findings may help promote the use of surgical masks among children, especially in view of the reopening of schools. Every precautionary measure against the diffusion of COVID-19 should be implemented. Furthermore, we think that children should be educated in the use of face masks by parents and school personnel. This may be associated with increased compliance with mask usage, especially among younger children. We do not know how long the present emergency will last, but we must prepare in case new lethal viruses should appear, possibly associated with increased adverse clinical outcomes among children.

So as one of the organizations said. Please stop spreading fear and misinformation.

You are spreading misinformation by continuing to say kids should wear masks for extended periods of time and and that there are no long term consequences and you are trying to muddy they waters with information that only touches the issue from far away. You just do not know that and you have not proved otherwise. Wearing masks for 30 minutes, like in the articles you posted, do not show what the effects of wearing them for 7 hours/ 5 days a week are. This is like saying that you can eat all the processed food you want because short term studies showed they are 100% safe. Inhaling your own CO2 is not healthy. Anyone who has worn a mask (except you apparently) knows that much, some of the air you breath is your own.

I have to say that it may also be dependent on the individual and their tolerance to the quality of air. My kids wear masks in their school. My daughter does not seem to care much if at all and she actually starts wearing it from the moment she leaves home for the school bus. My son though keeps on complaining he cannot breath properly and he will only put it right before he gets in the bus. He is a healthy boy and we cannot point to any condition that would explain this. He just seems to be more sensitive to this.

 

[Yellowfin]

As well as the organizations including childrens organizations and the paper cited. Here are more.

New research at UH Rainbow studies the impact of face masks on heart ra

Researchers at University Hospitals Rainbow Babies & Children's Hospital (UH Rainbow) published new findings today that wearing a face mask -- either a cloth mask or a surgical mask -- did not impair the ability of subjects to get air in and out of their bodies.

www.eurekalert.org

CLEVELAND, Ohio - Researchers at University Hospitals Rainbow Babies & Children's Hospital (UH Rainbow) published new findings today that wearing a face mask - either a cloth mask or a surgical mask - did not impair the ability of subjects to get air in and out of their bodies.

Asthma | Coronavirus Guidance

The Asthma Center provides information for patients about COVID-19 and asthma.

www.cincinnatichildrens.org

Common Concerns about Wearing Face Masks

• Some people have been concerned about potentially harmful side-effects from wearing masks for long periods of time: retaining carbon dioxide or inability to get enough oxygen. But it's highly unlikely you'll suffer either of these wearing a cloth or gauze face mask. When you breathe out, the carbon dioxide will go through and around the mask and oxygen comes in. Surgeons wear face coverings all day without harm.

Oh yes, another 10 minute study. (Re)read the article I posted: "Fresh air improves performance of children in schools"

 

[bluehende]

Oh yes, another 10 minute study. (Re)read the article I posted: "Fresh air improves performance of children in schools"

I did not comment on that because it is true. That is common knowledge and if you actually look is in the CDC guidelines. But your premise that co2 buildup in a mask is completely false. Or you could show any study that shows kids are in danger.

One more

Posts falsely claim face mask use harms children

A post spreading on social media claims that wearing face masks to help stop the spread of Covid-19 will cause children physical and psychological problems. But medical and psychological experts say the claims it makes about masks are false, and the post is part of a larger disinformation campaign.

factcheck.afp.com

A post spreading on social media claims that wearing face masks to help stop the spread of Covid-19 will cause children physical and psychological problems. But medical and psychological experts say the claims it makes about masks are false, and the post is part of a larger disinformation campaign.

The post includes a link to a globalresearch.ca page, which published this transcript of a German doctor’s claims about masks and their adverse effects. AFP debunked her claims here.


In August 2020, the US State Department described globalresearch.ca as “deeply enmeshed in Russia’s broader disinformation and propaganda ecosystem” and “a steady source of anti-US and anti-Western disinformation and propaganda.”

Allison Messina, who chairs the Division of Infectious Disease at Johns Hopkins All Children’s Hospital, told AFP by email that “masks do not cause oxygen deprivation in children nor (in) adults. Plenty of oxygen gets through and around masks. Children over two can safely wear masks.”


This was confirmed by Philipp Lepper, a member of the German Society for Pneumology and Respiratory Medicine (DGP) and senior physician at the Saarland University Hospital.


“Since the amount of air behind the mask is very small and is mixed with fresh air each time you breathe in, this has no effect on the oxygen and carbon dioxide levels measured in the body,” Lepper said in this AFP Fact Check.


The claim that masks increase the risk of CO2 poisoning was also refuted by Vinita Dubey, Associate Medical Officer of Health at Toronto Public Health.

Claim 3: Psychological damage and stress


The post also claims that “psychological damage” can result when children are unable to communicate adequately or recognize emotions, and says that face masks can “fuel anxiety and cause stress.”


Jennifer Katzenstein, Director of Psychology and Neuropsychology at Johns Hopkins All Children’s Hospital, said by email that: “Masks are not preventing children from communicating adequately with others, and many, many children have been quite resilient throughout the pandemic and are doing quite well.”


Rather than masks leading to anxiety and stress, “misinformation and uncertainty appear to be the primary drivers,” Katzenstein said, also dismissing the claim about emotions.

 

[Yellowfin]

We are getting somewhere if you admit that there is a relationship between how the kids perform and the quality of air they breathe. If you do not think you breathe some of your own air when you wear a mask, it is your prerogative but I would be curious to know how many would genuinely think you are right. The only way to settle this scientifically is to constantly measure the CO2 level inside a mask while you inhale, that way you would know if the air you breathe has the same level of CO2 as the environment. I have not seen such a study. IMO opinion your own air mixes with external air especially at the beginning of the inhalation, before more fresh air is pulled inside the mask.

 

[Yellowfin]

I did not comment on that because it is true. That is common knowledge and if you actually look is in the CDC guidelines. But your premise that co2 buildup in a mask is completely false. Or you could show any study that shows kids are in danger.

One more

Posts falsely claim face mask use harms children

A post spreading on social media claims that wearing face masks to help stop the spread of Covid-19 will cause children physical and psychological problems. But medical and psychological experts say the claims it makes about masks are false, and the post is part of a larger disinformation campaign.

factcheck.afp.com

A post spreading on social media claims that wearing face masks to help stop the spread of Covid-19 will cause children physical and psychological problems. But medical and psychological experts say the claims it makes about masks are false, and the post is part of a larger disinformation campaign.

The post includes a link to a globalresearch.ca page, which published this transcript of a German doctor’s claims about masks and their adverse effects. AFP debunked her claims here.


In August 2020, the US State Department described globalresearch.ca as “deeply enmeshed in Russia’s broader disinformation and propaganda ecosystem” and “a steady source of anti-US and anti-Western disinformation and propaganda.”

Allison Messina, who chairs the Division of Infectious Disease at Johns Hopkins All Children’s Hospital, told AFP by email that “masks do not cause oxygen deprivation in children nor (in) adults. Plenty of oxygen gets through and around masks. Children over two can safely wear masks.”


This was confirmed by Philipp Lepper, a member of the German Society for Pneumology and Respiratory Medicine (DGP) and senior physician at the Saarland University Hospital.


“Since the amount of air behind the mask is very small and is mixed with fresh air each time you breathe in, this has no effect on the oxygen and carbon dioxide levels measured in the body,” Lepper said in this AFP Fact Check.


The claim that masks increase the risk of CO2 poisoning was also refuted by Vinita Dubey, Associate Medical Officer of Health at Toronto Public Health.

Claim 3: Psychological damage and stress


The post also claims that “psychological damage” can result when children are unable to communicate adequately or recognize emotions, and says that face masks can “fuel anxiety and cause stress.”


Jennifer Katzenstein, Director of Psychology and Neuropsychology at Johns Hopkins All Children’s Hospital, said by email that: “Masks are not preventing children from communicating adequately with others, and many, many children have been quite resilient throughout the pandemic and are doing quite well.”


Rather than masks leading to anxiety and stress, “misinformation and uncertainty appear to be the primary drivers,” Katzenstein said, also dismissing the claim about emotions.

wow, I know, Russia, Russia, Russia. Is it so hard for you to have a proper dialogue without internet garbage propaganda? If you want a serious conversation, here is a study that looked at this. The conclusion is that the level of oxygen is lower in average (2.28%) but not dramatically after 30 minutes but look at the details. The range is very wide, it goes from -19% to 5%. It seems some people are indeed more sensitive than others. This is indeed for people with chronic pulmonary problems but isn't that a very strong indication that many are actually affected by this, especially when worn for several hours at the time, 5 days a week. As I said, if you find research (not opinions) about the CO2 level (and other gases) inside the masks let me know. Until then we can say you spread disinformation.

https://www.atsjournals.org/doi/pdf/10.1513/AnnalsATS.202007-812RL

By the way, Russia is the last cycle's theme, you are not up to date. Now that the administration endorsed the Nord stream pipeline the winds have changed and you have to change your tune as well.

 

[bluehende]

wow, I know, Russia, Russia, Russia. Is it so hard for you to have a proper dialogue without internet garbage propaganda? If you want a serious conversation, here is a study that looked at this. The conclusion is that the level of oxygen is lower in average (2.28%) but not dramatically after 30 minutes but look at the details. The range is very wide, it goes from -19% to 5%. It seems some people are indeed more sensitive than others. This is indeed for people with chronic pulmonary problems but isn't that a very strong indication that many are actually affected by this, especially when worn for several hours at the time, 5 days a week. As I said, if you find research (not opinions) about the CO2 level (and other gases) inside the masks let me know. Until then we can say you spread disinformation.

View attachment 35844

https://www.atsjournals.org/doi/pdf/10.1513/AnnalsATS.202007-812RL

By the way, Russia is the last cycle's theme, you are not up to date. Now that the administration endorsed the Nord stream pipeline the winds have changed and you have to change your tune as well.

You do realize that source had links to verify their claims unlike you. You again posted a study showing people with copd have o2 levels drop when they are on a treadmill. When you have a control response of 40% you really need to do some statistics which they did. I do not think you understand what -19 to 5 means. That is a statistical analysis of the data range expected due to the variability in the testing. You need to test individuals multiple times to determine that variability in personal subjects. And again people with serious lung disease should probably not wear a mask on a treadmill as the data clearly shows no difference at rest.
Now look at your first study. I do not think it says what you think it says .28+- .7%. You do know that is zero difference. Note their range of 1 to -1. That is the same with the second number at 30 minutes that actually shows an insignificant increase in 02 of 0.1. Maybe we should all be wearing them to increase our 02 levels. Thank you for proving my point.

 

[ccwu]

I don’t know why duplicated. Try to delete and not give me option to delete.


Sent from my iPhone using Tapatalk

 

[ccwu]

I don’t know the claim of mask traps CO2. But I know that since Covid and I am wearing mask, I did not have a cold for the whole year and my allergy to dust, animals, tree and grass is much better since I wear mask. Now, mask is not required for fully vaccinated people, but I am still wearing even going to beach. I used to sneeze, cough and running nose on beach, now I am fine with mask when not going to water.


Sent from my iPhone using Tapatalk

 

[Yellowfin]

You do realize that source had links to verify their claims unlike you. You again posted a study showing people with copd have o2 levels drop when they are on a treadmill. When you have a control response of 40% you really need to do some statistics which they did. I do not think you understand what -19 to 5 means. That is a statistical analysis of the data range expected due to the variability in the testing. You need to test individuals multiple times to determine that variability in personal subjects. And again people with serious lung disease should probably not wear a mask on a treadmill as the data clearly shows no difference at rest.
Now look at your first study. I do not think it says what you think it says .28+- .7%. You do know that is zero difference. Note their range of 1 to -1. That is the same with the second number at 30 minutes that actually shows an insignificant increase in 02 of 0.1. Maybe we should all be wearing them to increase our 02 levels. Thank you for proving my point.

We continue to discuss parallel issues. No, you did not mentioned one single study that showed the level of CO2 inside the masks (since you admitted that the performance is influenced by the air quality) and you did not show one single study that showed the long term consequences for those wearing masks for hours a day every day. Until then, I will continue to say you make bogus claims. I am not talking about masks in general (we are wearing them) but specifically about kids in class for hours at a time.

About the -19 to 5 , you do not seem to understand, it is observed not expected. It means that some subjects were affected, others not so much. The average is important but not so much, it is more important what happens at the individual level.

 

[bluehende]

We continue to discuss parallel issues. No, you did not mentioned one single study that showed the level of CO2 inside the masks (since you admitted that the performance is influenced by the air quality) and you did not show one single study that showed the long term consequences for those wearing masks for hours a day every day. Until then, I will continue to say you make bogus claims. I am not talking about masks in general (we are wearing them) but specifically about kids in class for hours at a time.

About the -19 to 5 , you do not seem to understand, it is observed not expected. It means that some subjects were affected, others not so much. The average is important but not so much, it is more important what happens at the individual level.

I have given 10 references from scientific organizations both for children and adults that clearly states co2 does not build up in the mask and 3 that show there is no difference in the lungs including 1 in children. I am curious how somehow there is some magical co2 in the mask....debunked by every scientific organization I have seen,,,, that is a problem that studies show does not exist. Again please show any study that shows masks cause problems. I have posted links that reference hundreds that show the opposite. The CDC shows the science they base their recommendations on. Your own study posted clearly that interpreting their study as anti-mask is misrepresenting it. It took you and others 6 posts to drag this conversation into another anti mask thread as opposed to the op posting how to get people to do what they should.

 

[Yellowfin]

I have given 10 references from scientific organizations both for children and adults that clearly states co2 does not build up in the mask and 3 that show there is no difference in the lungs including 1 in children. I am curious how somehow there is some magical co2 in the mask....debunked by every scientific organization I have seen,,,, that is a problem that studies show does not exist. Again please show any study that shows masks cause problems. I have posted links that reference hundreds that show the opposite. The CDC shows the science they base their recommendations on. Your own study posted clearly that interpreting their study as anti-mask is misrepresenting it. It took you and others 6 posts to drag this conversation into another anti mask thread as opposed to the op posting how to get people to do what they should.

Magical CO2 in the masks... are you serious? You are exhaling and some of it is trapped before inhaling. Other gases, high humidity etc. We do not seem to agree on a very simple issue. In the winter, why do you think the air you breathe through the mask feels so warm and humid if all the air you breathe is fresh? Come on! You can reference one study or 100, it does not matter, none of those have looked at what happens when kids wear them daily for many hours and what are the consequences in the long run.

 

[Yellowfin]

@bluehende


“Wearing an N95 respirator was reported to cause headaches among healthcare providers [1]. N95 respirator and surgical facemask also causes different heart rate and subjective perception of discomfort [2]. The physiology for these phenomena is not fully understood. One possible reason is due to the change of physical conditions around the respirators and masks. For example, due to slowing down of heat and substance dissipation, both N95 respirator and surgical facemask cause variations of microclimates around the masks [3]. Wearing respirator or mask would affect inhaled gas concentrations and respiratory resistances as well [4]. Particularly, wearing the respirator elevated the carbon dioxide level while decreased oxygen level within the respirator which may be the cause of subjective complaints for wearing respirators [5]. The increased partial carbon dioxide level also tends to affects breathing patterns and heart rate variability [6]. However, the reason for elevated carbon dioxide level within respirator and mask is unknown. One possibility is that the expired airflow, with higher concentration of carbon dioxide, is trapped around the masks and re-enter the respiratory system during the next respiration cycle.”



https://www.oatext.com/Evaluation-o...al-cavity-with-N95-respirator-a-CFD-study.php









“Conclusions

Breathing through N95 mask materials have been shown to impede gaseous exchange and impose an additional workload on the metabolic system of pregnant healthcare workers, and this needs to be taken into consideration in guidelines for respirator use. The benefits of using N95 mask to prevent serious emerging infectious diseases should be weighed against potential respiratory consequences associated with extended N95 respirator usage”

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4647822/



“Objectives: This study was undertaken to evaluate whether the surgeons' oxygen saturation of hemoglobin was affected by the surgical mask or not during major operations.

Methods: Repeated measures, longitudinal and prospective observational study was performed on 53 surgeons using a pulse oximeter pre and postoperatively.

Results: Our study revealed a decrease in the oxygen saturation of arterial pulsations (SpO2) and a slight increase in pulse rates compared to preoperative values in all surgeon groups. The decrease was more prominent in the surgeons aged over 35.”

https://pubmed.ncbi.nlm.nih.gov/18500410/





“3. Small children should not wear masks. California's Dept. of Public Health points out, "Children should not wear these masks – they do not fit properly and can impede breathing. If the air quality is poor enough that a child requires a mask, the child should remain indoors, in a safe place, and evacuation should be considered."



https://www.sfgate.com/california-w...county-health-safe-advice-doctor-13399569.php

 

[rickandcindy23]

It is still a state mandate here. It is simply not the maskless that will be susceptible to the virus, it will also affect those that wear a mask and are next to someone without a mask. Masks are not 100% and neither is the vaccine. I am also vaccinated but am immuocompromised. I have to go interisland for medical checkups and really do appreciate that masks are still required in the state.

For residents and visitors who do not want to comply with the state rules, they should stay home or move to the mainland where they can be mask free. There is a reason for the annunal darwin awards. This is all about caring about the health of others.

That was just rude.

Masks all of the time for you then, with other illnesses? I follow the science. Maui will be a place to go and stay on the lanai, same with the Big Island next month. I won't wear a mask as a vaccinated person and Fauci said we didn't need to, and I consider him a tyrant.

 

[Luanne]

That was just rude.

Masks all of the time for you then, with other illnesses? I follow the science. Maui will be a place to go and stay on the lanai, same with the Big Island next month. I won't wear a mask as a vaccinated person and Fauci said we didn't need to, and I consider him a tyrant.

Why not? Most Asians have done this for years. To protect themselves and others.

 

[rickandcindy23]

Why not? Most Asians have done this for years. To protect themselves and others.

I am not afraid. I live my life in hope and not fear. That is what life is about, not about being afraid of germs. That is a mental illness, being constantly afraid of germs, and it's not how I choose to live my life, and I don't want it for my grandkids. I know the kids all feel the same, but the grandkids could become germaphobes. Think Howard Hughes (as portrayed by Leonardo DiCaprio), peeing in milk bottles and living alone. I don't want that for our kids, do you? And why do Asians do that? I actually know why.

 

[Luanne]

I am not afraid. I live my life in hope and not fear. That is what life is about, not about being afraid of germs. That is a mental illness, being constantly afraid of germs, and it's not how I choose to live my life, and I don't want it for my grandkids. I know the kids all feel the same, but the grandkids could become germaphobes. Think Howard Hughes (as portrayed by Leonardo DiCaprio), peeing in milk bottles and living alone. I don't want that for our kids, do you? And why do Asians do that? I actually know why.

So you are saying that those who choose to wear masks are afraid and have a mental illness. That is offensive. You are lumping entire nationalities in there. People on here complain about the bashing that goes on towards those who don't want to masks, but you have shown how it goes the other way as well.

And yes, please tell me why you think Asians mask up.

 

[Yellowfin]

So you are saying that those who choose to wear masks are afraid and have a mental illness. That is offensive. You are lumping entire nationalities in there. People on here complain about the bashing that goes on towards those who don't want to masks, but you have shown how it goes the other way as well.

And yes, please tell me why you think Asians mask up.

In several Asian large cities, the air pollution is through the roof.