Masks do not increase body temperature
during exercise in the heat, study shows
A new paper published in Sports Heal t7 has demonstrated that exercising in the heat with a face mask on does not significantly increase body temperature or heart rate during exercise. Researcher tested four kinds of face mask: a surgical mask; an N95; a gaiter (which covers the neck and goes over the nose and mouth); and a sport mask. None of them significantly increased body temperature or heart rate compared to the group without a face mask.
Many question arising in our mind, like:-
Wearing mask increase body temperature?
Can wearing mask cause a fever?
Can wearing mask increase blood pressure?
Participants walked or jogged for 60 minutes in a 90˚F(32˚C) environment at low to moderate exercise intensities. Researcher team also measured the humidity and temperature inside and outside of the face mask. They placed a sensor inside and outside of the face masks on participants' faces.
They found the sport mask and gaiter became significantly more humid as the materials absorbed more sweat and water vapour from exhaled air. While participants did report a greater degree of breathing discomfort during exercise with a face mask because of the changes in humidity and temperature inside of the face mask, there was no relationship between reported discomfort and measures of body temperature and heart rate.
According to the researcher hopes this research can help
shape guidelines for athletes who are exercising and competing during the
summer and into the fall while ambient temperatures are still high. “It's feasible
and safe to use masks during low to moderate intensity exercise in the heat.
Fridge free vaccine candidates made from plants & bacteria
Nano engineers have developed Covid-19 vaccine candidates
from plants or bacteria. They are also fridge free—they don’t need to be stored
at extremely low temperatures. The vaccines are still in the early stage of
development, the University of California, San Diego said in a press release.
How to store coronavirus vaccine?
Is vaccine can be store without fridge?
Is coronavirus vaccine safe without fridge?
The other is made from a bacterial virus, or bacteriophage, called Q beta. The researchers used cowpea plants and E coli bacteria to grow millions of copies of the plant virus and bacteriophage, respectively, in the form of ball-shaped nano particles. The researchers harvested these nano particles and then attached a small piece of the SARS-CoV-2 spike protein to the surface.
New clues about origins of lung cancer in non-smokers
A genomic analysis of lung cancer in people with no history of smoking has found
that a majority of these tumors arise from the accumulation
of mutations caused by natural processes
in the body. This study was con ducted by an
international team led by researchers at the US National Cancer Institute
(NCI), part of the National Institutes of Health (NIH).
The findings show, three molecular subtypes of lung cancer in people who have never smoked. These insights will help unlock the mystery of how lung cancer arises in people who have no history of smoking and may guide the development of more precise clinical treatments.
The researchers used whole-genome sequencing to characterize the genomic changes in tumor tissue and matched normal tissue from 232 never smokers, who
had been diagnosed with non-small cell lung cancer. The patients had not yet
undergone treatment for their cancer.
The researchers discovered that a majority of the tumour genomes of never smokers bore mutational signatures associated with damage from endogenous processes, that is, natural processes that happen inside the body.