How To Return To Exercise If You've Had COVID-19

Recently, in many places across the country, some people infected with the new crown have gradually turned negative and returned to normal life and work. However, rumors circulated on the Internet that some children, adults, and elderly people were hospitalized or died suddenly due to strenuous exercise in a short period of time after recovery, causing a new round of worries among " Positive Health people". Is the sudden myocarditis after recovery related to the new crown? How long will it take to resume sports after "Positive Health"? "Global Times Health Client" specially invited Liu Jian, deputy director and chief physician of the Cardiology Department of Peking University People's Hospital, to give a professional interpretation of this.

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Generally speaking, acute myocarditis is mostly related to infectious factors such as colds. If the virus has been infected and the myocardium is involved, strenuous exercise is still carried out under such circumstances, which may aggravate viral myocarditis or cause irreversible damage to the myocardium. Therefore, even for general upper respiratory symptoms, such as runny nose, sneezing, nasal congestion and other mild cold symptoms, it is recommended not to engage in strenuous exercise. When a person has a fever, the heartbeat speeds up, the blood circulation speeds up, and the heart's blood output increases, which will increase the load on the heart. If you exercise vigorously again, it will further increase the burden on the heart. For patients with underlying cardiac diseases, it can also lead to acute cardiac insufficiency and fatal arrhythmias.

So, does the new coronavirus also cause myocarditis? Liu Jian said that a study published in the international medical journal "Circulation" in April this year observed acute myocarditis in patients with covid in 23 hospitals in the United States and Europe from February 1, 2020 to April 30, 2021. prevalence. It is estimated that acute myocarditis occurs in 2.4 to 4.1 out of every 1,000 patients hospitalized for COVID-19. Myocarditis associated with the American variant has also been recently reported.

The new coronavirus may induce myocarditis in three ways: first, the virus directly damages cardiomyocytes; second, inflammatory cells migrate to cardiomyocytes and induce local inflammation; third, systemic inflammation triggers excessive activation of the autoimmune system and damages the myocardium.

Viral myocarditis occurs, and patients may experience symptoms such as fatigue, chest tightness, shortness of breath, palpitations, dizziness, loss of appetite, nausea and vomiting, dyspnea, and chest pain in the early stage. If a person infected with the new coronavirus has the above symptoms, he must be vigilant; if the symptoms worsen, or if symptoms such as arrhythmia, tachycardia, or slowness appear, he should go to the hospital for examination as soon as possible. Electrocardiograms can detect changes in myocardial damage. At this time, if diagnosed and treated early, most of the prognosis is good. If the disease continues to develop, it will often take a sharp turn for the worse, which may cause heart failure, shock, and even sudden death.

Liu Jian reminded that viral myocarditis can launch "indiscriminate attacks" on people of different age groups, and no one should take it lightly, and exercise is the "fuse" that induces myocarditis. Therefore, during the acute stage of infection with the new coronavirus, you should rest as much as possible to mobilize the immune system to resist the virus and complete recovery. It is not recommended to do any exercise. If you have symptoms such as chest pain, severe dyspnea, and palpitations, especially those who have been diagnosed with heart disease, you should go to the hospital in time.

In the late stage of infection, the symptoms have been alleviated, and even the new coronavirus antigen has turned negative. You need to pay attention to rest and not exercise. You can do some daily activities within your ability, such as sweeping the floor and washing dishes.

When symptoms have completely disappeared, more daily activities can be performed. If there is no underlying disease, the condition is mild after infection, and there is no discomfort in daily activities, you can gradually resume exercise after 7 days of rest, such as starting from walking.

If there is an underlying disease, or people who are seriously ill after infection and induce aggravation of the underlying disease, they should be evaluated by a doctor before deciding when to resume exercise. Even if you resume exercise, you should start with low-intensity, low-frequency exercise, step by step, moderate strength, do a good job of warming up before exercise and stretching after exercise to avoid sports injuries.