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Science News Archive June 2021 - Page 2


Page 2 of 51

Lack of exercise while in quarantine had adverse effects on the health of women aged 50-70

A Brazilian study found that a lack of exercise during quarantine increased cholesterol and glycated hemoglobin levels in women aged 50-70, while also reducing muscle strength and aerobic capacity. The findings highlight the importance of promoting physical activity safely during periods of social distancing or isolation.

Effects of masks on exercise

A crossover trial found that exercising with a mask elevated breathing resistance and reduced peak exercise oxygen uptake, but did not compromise overall fitness. The study suggests that wearing masks during exercise may exert physical limitations on capacity, but the clinical relevance of this finding is uncertain.

SourceJAMA Network·JournalJAMA Network Open·DateJun 30, 2021

Decoding electron dynamics

Researchers at Huazhong University of Science and Technology developed a scheme to identify and weigh quantum orbits in strong-field tunneling ionization. By introducing a second harmonic frequency, they can alter the photoelectron yield, allowing for accurate identification of quantum orbits. This breakthrough enables attosecond tempo...

Diet rich in omega 3 fatty acids may help reduce headaches

A recent trial found that consuming a diet high in omega 3 fatty acids significantly reduces headache frequency and severity compared to a typical diet. The study, published in The BMJ, suggests that increasing omega 3 intake can lead to reduced levels of pain-reducing oxylipins and improved quality of life for those with migraines.

SourceBMJ Group·JournalThe BMJ·DateJun 30, 2021

Prevalence of COVID-19 among hospitalized infants varies with levels of community transmission

A new study found that COVID-19 infection rates among infants hospitalized for potential serious bacterial infections were higher during periods of high community transmission, but lower when transmission was low. The study also found a relatively low incidence of other respiratory viruses in this age group.

Have a pandemic plan? Most people did not

A survey of 217 participants found that most people were unprepared to handle the COVID-19 pandemic, with 62% having no plan at all. The study suggests that building basic health literacy skills can help individuals make informed decisions about their health and safety.

SourceUniversity of Houston·JournalJournal of Clinical and Experimental Neuropsychology·DateJun 30, 2021

A white dwarf living on the edge

Astronomers have identified a white dwarf so massive that it may collapse. The discovery provides an example of what can happen after the phase where two less massive white dwarfs merge into one. This process boosts the magnetic field and speeds up rotation compared to progenitors.

SourceW. M. Keck Observatory·JournalNature·DateJun 30, 2021

Cross-generational consequences of lead poisoning

Researchers from Japan and Zambia have found a significant negative correlation between chronic lead poisoning in children and the health-related quality of life of their mothers. The study, which included 40 households in Kabwe, Zambia, showed that maternal vitality and mental health were particularly impacted by child lead exposure.

SourceHokkaido University·JournalChemosphere·DateJun 30, 2021

Psoriasis among adults in US

A national survey study found that psoriasis has become more common among adults in the United States over the past two decades. The study estimated a significant increase in psoriasis prevalence from 2.4% in 2003 to 5.0% in 2021.

SourceJAMA Network·JournalJAMA Dermatology·DateJun 30, 2021

Autonomous excavators ready for around the clock real-world deployment

Researchers from Baidu Research and the University of Maryland have developed an autonomous excavator system (AES) that can operate continuously for over 24 hours without human intervention. AES uses perception, planning, and control capabilities to identify target materials and avoid obstacles, achieving performance comparable to expe...

SourceBaidu Inc·JournalScience Robotics·DateJun 30, 2021