World News
Omicron: As BA.2 gains ground, experts explain if there is a need to worry
A new sub-strain of a novel coronavirus Omicron variant has spread rapidly around the world and has emerged as the latest challenge to tame Covid-19. According to the World Health Organization (WHO), the BA.2 substrain has been detected in at least 57 countries. A leading healthcare expert says people need to be cautious.
Meanwhile, Dr Wen said Omicron will not be the last variant of the coronavirus.
“Almost certainly not. New variants are emerging all the time, because that’s what viruses do: they mutate as they replicate,” she said, adding: “That’s why real-time monitoring is so important, and that’s why vaccination is the key reason.”
How transmissible is BA.2?
According to available data from governments, especially in hardest-hit Europe, the BA.2 substrain has made progress in recent months. In Denmark, for example, people infected with BA.2 transmitted the virus to an average of 39% of susceptible family members, compared with 29% for the original omicron variant. This is in line with preliminary data from the UK.
But is BA.2 more dangerous than previous strains?
Not according to the World Health Organization. Based on evidence from Denmark, the World Health Organization said this week that BA.2 did not appear to be more severe than the original Omicron variant, and that its spread did not lead to an unexpected spike in hospitalizations.
This is also reflected in the changes recently announced by the Danish government when Covid-19 restrictions ended. The Danish government says the disease is no longer a threat to society, even as cases hit a record high.
Is the vaccine effective against the BA.2 subvariant?
The latest data from Europe suggest that the existing vaccine is as effective against BA.2 as against the previous subvariant. Although BA.2 is more contagious, the vaccine blocked 13% of cases 25 weeks after a second dose of the vaccine, a British study showed.
Two weeks after the booster dose, that number increased to 70 percent.
Difference between BA.2 and BA.1
BA.2 has 40 different mutations compared to the original substrain, including key alterations in the spike region, the researchers said.
While the two are related, there are enough differences to drive behavioral change. The milder form of most Omicron cases in vaccinated populations may leave those who recover remain vulnerable to existing viruses and future variants, the researchers said.
They further stated that BA.2 will prolong the Covid-19 wave dominated by Omicron. A likely slower decline in cases could lead to higher hospitalizations and pose problems for countries with low vaccination rates.
It will “create longer tails of the Omicron loop,” says computational biologist Trevor Bedford, who works at the Fred Hutchinson Cancer Research Center.
Complete News Source : Hindustan Times
health and remedies
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.
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.
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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