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First Wuhan Covid case days later than initially reported: Scientist

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3 years ago

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First Wuhan Covid case days later than initially reported: Scientist

A top scientist said in the journal Science on Thursday that the first Covid-19 case discovered in Wuhan, China and proposed by the World Health Organization was actually a few days later than previously thought, and it was in the animal market. Virologist Michael Voroby wrote that the initial patient was not a man who had never been to the Wuhan market where wild animals and domestic animals were sold, but the first known Covid-19 case was a man who had been in the market. Women who have worked.

For Worobey, this key information and his analysis of other early Covid-19 cases in the city clearly indicate that the virus originated in animals. In the absence of definitive evidence, since the pandemic began about two years ago, experts have launched a heated debate on the origin of the virus. Worobey is one of the 15 or so experts who published a column in Science in mid-May asking for serious consideration of the virus leaked from the Wuhan laboratory.

The outbreak “provides strong evidence for the origin of the live animal market of the pandemic.” One criticism of the market theory is that since the health authorities issued an alert on suspicious disease cases related to the market as early as December 30, 2019, this would introduce bias and cause more cases to be found there than in other places because it has been It attracted people’s attention. To refute this argument, Worobey analyzed the cases reported by the two hospitals before the alarm was issued.

These cases are also related to the market to a large extent, while those that are not related to the market are geographically concentrated around the market. “In this city of 11 million people, half of the early cases were related to a place the size of a football field,” Vorobby told the New York Times. “If there is no outbreak, it is difficult to explain that this model starts from the market.” Another criticism of this theory is based on the fact that the first case discovered has nothing to do with the market.

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However, although the WHO report claimed that the man who was initially identified as patient zero became ill on December 8, according to Vorobby, he did not actually become ill until December 16. This inference is based on a video interview he discovered, a case described in a scientific article, and a hospital medical record that matches the 41-year-old man.

This means that the first reported case will be a woman working in the market who fell ill on December 11. Peter Daszak, a disease expert on the WHO investigation team, said Vorobey’s analysis convinced him.

News Source : Hindustan Times

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Train smarter, not harder: How taking occasional breaks from gym can revolutionise your fitness routine

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20 hours ago

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November 21, 2024

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Train smarter, not harder: How taking occasional breaks from gym can revolutionise your fitness routine

Taking regular breaks from intense training, like deload weeks, helps your body recover, preventing fatigue and injury, and ultimately boosts fitness gains.

When it comes to getting fit, the idea of spending hours at the gym might come to mind, but many fitness experts argue that taking a “deload week” every six to eight weeks is actually key to improving your fitness gains. A deload week involves reducing the intensity of workouts to allow the body to recover from the fatigue and muscle damage caused by intense training.

While high-intensity training helps build strength and fitness, it can also lead to muscle strain, and without adequate recovery, these gains can’t fully materialise. Deload weeks give the body much-needed rest to repair and rebuild, ensuring continued progress. (Also read: Bhagyashree swears by this super easy exercise for instant leg pain relief and better mobility. Watch how to do it )

Why recovery is key for muscle growth

According to an article by The Conversation, intense exercise can cause tiny tears in muscle fibres, leading to inflammation that requires rest or low-intensity exercise to heal. This inflammation is essential for muscle growth and fitness improvements. However, without proper recovery, muscles remain in a state of slight damage, preventing inflammation from resolving. This chronic state of inflammation can hinder muscle function, reducing oxygen efficiency and impairing performance. Giving muscles time to recover through rest ensures they repair properly and are primed for continued progress, setting us up for greater success in our fitness journey.

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Many gymgoers fear taking time off and are worried it will lead to a loss of gains. However, research shows that muscle genes have a “memory imprint,” which keeps them in a semi-prepared state. This allows muscles to respond more quickly and effectively to future training, promoting growth after a rest period. Even after extended periods of reduced intensity, up to seven weeks, muscular fitness can be restored to prime condition—and in some cases, surpass previous levels. Interestingly, recovery can occur twice as fast as it took to reach peak fitness initially, even if some strength is lost.

Taking time off from intense training is crucial to prevent muscle soreness and avoid overtraining syndrome. Overtraining occurs when the body doesn’t get enough rest, leading to prolonged fatigue, decreased performance, and mood disturbances. Symptoms develop gradually, making overtraining difficult to recognize until it’s severe. Rest is essential to avoid these issues and ensure long-term progress in training.

Role of overtraining syndrome and deload weeks

Overtraining syndrome is challenging to quantify due to its vague symptoms. Studies suggest it may affect as few as 10% of elite athletes, though rates could climb to 60% among highly competitive individuals. Recovery is essential for both fitness and overall health. When engaging in heavy gym routines, it’s vital to incorporate sufficient recovery time into your workout plan. Unlike rest days, which involve little to no exercise once or twice a week, deload weeks feature lighter training at reduced intensity—typically about 50% fewer workouts or a 20% drop in workout intensity.

Both rest days and deload weeks are essential for recovery and crucial to improving fitness. It’s not about choosing one over the other—they complement each other. For instance, intense training for marathons, Ironman, or CrossFit competitions requires weekly rest days alongside scheduled deload weeks. However, for recreational gym-goers exercising 1–3 times weekly at a moderate intensity, the recovery from this routine is often sufficient without the need for additional deload weeks.

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Fitness influencers recommend incorporating deload weeks into training schedules every 4–8 weeks, aligning closely with the expert advice of 4–6 weeks. However, it’s crucial to listen to your body and schedule deload weeks as needed. If your performance plateaus or worsens, it may signal time for a deload. Training plans should be flexible enough to allow rest when required. Deload weeks not only enhance performance but also support overall health.

Disclaimer: This article is for informational purposes only and not a substitute for professional medical advice. Always seek the advice of your doctor with any questions about a medical condition.

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