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Vaccines still effective against Omicron, WHO chief scientist tells us why

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Vaccines still effective against Omicron, WHO chief scientist tells us why

As the highly contagious Omicron has pushed new records globally, WHO Chief Scientist Dr. Soumya Swaminathan said that the vaccine still seems to be proven effective. Although the effectiveness of vaccines varies slightly between vaccines, most WHO emergency use list vaccines actually have very high protection rates against serious illness and death, at least before the delta variant.

Dr. Swaminathan emphasized that the Omicron variant is infecting vaccinated and unvaccinated people worldwide, and said that the vaccine still seems to be proven effective because despite the exponential growth in many countries, the severity of the disease has not soared to new levels. s level. Dr. Swaminathan wrote on Twitter: “As expected, T cell immunity is more resistant to #Omicron. This will protect us from serious diseases. If you have not been vaccinated, please get the vaccine.” Vaccine Or a previous infection with COVID-19 will trigger a human T cell response.

In explaining the factors of vaccine effectiveness against COVID-19, Swaminathan almost said at a WHO press conference on Wednesday that the effectiveness of vaccines varies slightly between vaccines, although most WHO emergency use list vaccines actually The above has a very high protection rate against serious illness and death at least before the delta variant.

She also said that biological factors also determine the effectiveness of the vaccine. “It includes age, underlying diseases, and we know and use all the variants to prove this, that is, the older you are, the more potential diseases and comorbidities, the more susceptible you are to contracting this disease,” she said.

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When talking about the third factor that determines the effectiveness of vaccines, Swaminathan said: “It’s time for vaccination and weakening of immunity. We know that this has a certain meaning, but re-infection is harmful to infectivity and immunity. The impact of the virus has diminished. This is why we are seeing many breakthrough infections, especially Omicron, because Omicron does have the ability to overcome pre-existing immunity and requires higher levels of antibodies and protection.”

In addition, she said that now the evidence for Omicron has just emerged, and it is too early to draw conclusions, but all laboratory studies point to the reduction of neutralization ability, and clinically seen people who have been vaccinated have been infected. People in Omicron will still suffer breakthrough infections.

“This is why the numbers we see all over the world today are very high, because these infections occur in vaccinated and unvaccinated people. However, it turns out that vaccines still have a protective effect, because even though the numbers are increasing exponentially in many countries , The severity of this disease has not risen to a new level,” she added.

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

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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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