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Majority of people with Covid-19 only suffer mild symptoms and then recover according to China data

While the actual recovery rates for Covid-19 won’t be clear until after the outbreak, there is indication that most people recover from the illness.

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Majority of people who get infected with the novel coronavirus, Covid-19, experience mild symptoms and then eventually recover. This is according to scientists from the Chinese Center for Disease Control and Prevention who, last month, published a research paper analyzing the data for the first 72,314 people diagnosed with Covid-19.

As reported by CNN.com, it may still take a long time before the world fully understands Covid-19, but this information may already give some insight into those most vulnerable to the virus.

As stressed by the Daily Mail: “Researchers there found that more than 80 percent of people diagnosed with the disease sweeping the globe only developed fever, cough and some aches and pains.”

Not this is worth stressing: China’s Centers for Disease Control and Prevention admits that the high rate of people with only mild or no symptoms might mean that many simply aren’t getting diagnosed.

The data from the research noted:

  • Men and women have roughly the same chance of contracting the virus. Looking at 44,672 patients confirmed to have the disease, the researchers found there were 106 diagnosed men per 100 women.
  • The impact appears to be worse on men – at least among those who were part of the study. While 2.8% of the men diagnosed with the disease died, only 1.7% of women did.
  • More than 80% experienced only mild symptoms. Almost 14% were categorized as severe cases, while the condition of almost 5% was determined to be critical.
  • Children were not immune, but – at least those considered in the study – showed less severe symptoms than adults. CNN.com reported that a separate study published in the medical journal Pediatrics examined 731 confirmed and 1,412 suspected cases of Covid-19 in children. This separate study found that more than 90% of all pediatric patients were asymptomatic, showing mild or common forms of illness. About 13% of patients did not show symptoms of illness. Out of the combined 2,143 cases, one child, a 14-year-old boy, died and nearly 6% of cases were severe. It is still uncertain why children with Covid-19 were not as ill as adults.

While the actual recovery rates for Covid-19 won’t be clear until after the outbreak, there is indication that most people recover from the illness.

In a situation report released earlier, the Chinese Center for Disease Control and Prevention said that of the 80,928 confirmed cases in mainland China, 70,420 people have been “cured and discharged from hospital” versus 3,245 who died. The rest of the patients are still ill.

It noted that:

  • The older the patient, the more risk they face from the virus.
  • The fatality rate increased as the patients’ ages went up. Among people aged 49 or younger, only about 0.2% of those who contracted the disease died, compared to 14.8% of those who were 80 and older.
  • People with chronic diseases before contracting the virus were more likely to die – e.g. high blood pressure, heart problems and diabetes.

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Fitness

6 Exercise safety tips

Now, as social restrictions ease, you may find yourself stepping up your workouts, whether you’re training for an event or working to improve your game in a recreational league.

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In the wake of the COVID-19 pandemic, many Americans are more aware of their health and wellness. Now, as social restrictions ease, you may find yourself stepping up your workouts, whether you’re training for an event or working to improve your game in a recreational league.

Sprains, strains and injuries can happen to even the most seasoned athletes. When you’re testing your limits, even a minor injury can alter your performance. Consider products and supports like these from the CURAD Performance Series product line, available at Walmart and Amazon, to help you get back in the game quickly and safely.

Find more resources to support your fitness journey at CURAD.com.

Keep Dirt and Germs Away

The more active you are, the harder it can be to find a bandage that stays with you all day or all game long.

Spray Away Sore Spots

Controlling mild pain can help keep you at the top of your game, and a topical analgesic works fast to heal common pain brought on by fitness and exercise, such as pain in knees, feet, shoulders and backs.

Put Pain in the Past

When recovery becomes the name of the game and pain relief is needed after daily workouts or bodily injuries. Cold packs work to heal bruises, reduce swelling and relieve headaches and general pain points while microwavable heat packs provide satisfying heat therapy to address sore and stiff joints, muscle cramps and tension.

Reduce Impact of Knee Strain

Weak, injured or arthritic knees can come from many sources, including tendonitis and a wide range of conditions that result in strain or overuse. An adjustable band can provide support for on-field sports and during workouts or everyday activities.

Manage Pain and Relieve Pressure

If you participate in endurance and strength exercises or certain sports, you may ask a lot of your joints. Kinesiology tape can be configured a multitude of ways to help reduce pain and improve blood circulation, as well as relieve tension and pressure.

Control Back Strain

When your back is strained, your body and performance can suffer. A mild or moderate sprain can benefit from strong support and compression.

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Fitness

Exercise can provide relief for dry, itchy eyes

A significant increase in tear secretion and tear film stability after participating in aerobic exercise can be another remedy for relieving dry, itchy eyes.

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Photo by Quinten de Graaf from Unsplash.com

A team led by researchers from the University of Waterloo discovered that a significant increase in tear secretion and tear film stability after participating in aerobic exercise can be another remedy for relieving dry, itchy eyes. 

Every time we blink, our eyes are covered in tear film—an essential protective coating necessary for maintaining healthy ocular function. Healthy tear film comprises three layers–oil, water, and mucin–that work together to hydrate the ocular surface and protect against infection-causing irritants like dust or dirt.

When any part of the tear film becomes unstable, the ocular surface can develop dry spots, causing eye symptoms like itchiness or stinging and burning sensations.

“With so much of our activity tied to screen usage, dry eye symptoms are becoming increasingly common,” said Heinz Otchere, a PhD candidate in vision science at Waterloo. “Instead of having to use eye drops or other alternative treatments, our study aimed to determine if remaining physically active can be an effective preventative measure against dryness.”

Fifty-two participants were divided into two groups—athlete and non-athlete—to participate in an exercise session. Participants in the athlete group exercised at least five times per week, while non-athlete participants exercised no more than once per week. Researchers, which included experts from the University of Cape Coast in Ghana, performed visual examinations before and five minutes after each exercise session, where tear secretion and tear break-up time were assessed.

While participants in the athlete group showed the largest increase, Otchere says all participants experienced a meaningful boost in tear quantity and tear film stability after the exercise session. 

“It can be challenging for people to regularly exercise when the demand is there to work increasingly longer hours in front of screens,” Otchere said. “However, our findings show physical activity can be really important for not just our overall well-being, but for our ocular health too.”

The study, Differential effect of maximal incremental treadmill exercise on tear secretion and tear film stability in athletes and non-athletes, was co-authored by Otchere, the University of Cape Coast’s Samuel Abokyi, Sekyere Nyamaah, and Michael Ntodie, and Ghana’s Our Lady of Grace Hospital’s Yaw Osei Akoto. It was recently published in the Experimental Eye Research journal.

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Fitness

Late-life exercise shows rejuvenating effects on cellular level

Late-life exercise mitigates skeletal muscle epigenetic aging.

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Photo by Caley Vanular from Unsplash.com

For people who hate exercising, here comes some more bad news: it may also keep you younger. Not just looking younger, but actually younger, on an epigenetic level. By now, the benefits of exercise have been well established, including increased strength of bones and muscles, improved mobility and endurance, and lower risk of heart disease, diabetes and high blood pressure.

But younger?

A study recently published in Aging Cell, “Late-life exercise mitigates skeletal muscle epigenetic aging,” suggests this could be the case. The paper was written by a team of seven researchers across three institutions, including Kevin Murach, an assistant professor in the Department of Health, Human Performance and Recreation at the U of A. Murach’s grant from the National Institute of Health funded the study, and he was one of three co-first authors.

Bootcamp for Mice

While the paper is dense with data, reflecting the use of several analytic tools, the experiment that generated the data was relatively straightforward. Lab mice nearing the end of their natural lifespan, at 22 months, were allowed access to a weighted exercise wheel. Generally, mice require no coercion to run and will do so voluntarily. Older mice will run anywhere from six to eight kilometers a day, mostly in spurts, while younger mice may run up to 10-12 kilometers. The weighted wheel ensured they built muscle. While there isn’t a direct analogue to most human exercise routines, Murach likened it to “a soldier carrying a heavy backpack many miles.”

When the mice were studied after two months of progressive weighted wheel running, it was determined that they were the epigenetic age of mice eight weeks younger than sedentary mice of the same age — 24 months. Murach noted that while the specific strain of mice and their housing conditions can impact lifespans, “historically, they start dropping off after 24 months at a significant rate.” Needless to say, when your lifespan is measured in months, an extra eight weeks — roughly 10 percent of that lifespan — is a noteworthy gain.

Methylation, My Dear Watson

The science behind this, while complicated, hinges largely on a biological process known as DNA methylation. A recent New York Times article discussing Murach’s work on muscle memory described methylation “as a process in which clusters of atoms, called methyl groups, attach themselves to the outside of genes like minuscule barnacles, making the genes more or less likely to turn on and produce particular proteins.”

As the body ages, there tends to be increased DNA methylation, or even hypermethylation, at promoter sites on genes in muscle. “DNA methylation changes in a lifespan tend to happen in a somewhat systematic fashion,” Murach explained, “to the point you can look at someone’s DNA from a given tissue sample and with a fair degree of accuracy predict their chronological age.” Due to this, researchers can use one of a number of “methylation clocks” to determine the age of a DNA sample.

DNA Methylation, Aging and Exercise

While the paper strengthens the case for exercise, there is still much that needs to be learned. Though the connection between methylation and aging is clear, the connection between methylation and muscle function is less clear. Murach is not yet prepared to say that the reversal of methylation with exercise is causative for improved muscle health. “That’s not what the study was set up to do,” he explained. However, he intends to pursue future studies to determine if “changes in methylation result in altered muscle function.”

“If so, what are the consequences of this?” he continued. “Do changes on these very specific methylation sites have an actual phenotype that emerges from that? Is it what’s causing aging or is it just associated with it? Is it just something that happens in concert with a variety of other things that are happening during the aging process? So that’s what we don’t know.”

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