This, I think, is what is driving it. Fear that Covid could lead to problems with heart inflammation in athletes...
https://www.washingtonpost.com/sports/20...lications/
“We have very strong, serious concerns about the potential for covid to affect athletes cardiovascularly,” said Michael Emery, co-director of the sports cardiology department at the Cleveland Clinic. “When you look at covid in general, there seems to be a higher predilection for involvement with the heart than about any other virus we’ve seen.”
Emery said cardiological experts worldwide have published five or six significant papers regarding covid-19 and athletes. “All the papers agree that there should be a heightened level of concern with this virus and cardiac involvement in athletes,” Emery said. While the specifics and suggestions of how to manage the risk differ in those papers, “the overall level of concern is greatly there.”
Since the coronavirus started its spread, the lungs have been at the center of its effects. The virus enters the body through the lungs and can cause severe cases of pneumonia that demand intensive care and intubation. But doctors have long suspected covid-19 also affects the heart. Heart muscle cells have ACE-2 receptors, which the coronavirus uses to enter cells. The lungs, Schneider said, are the only place in the body with more of them than the heart.
“It’s turned out, now that we’re getting more long-term data, the virus also affects the heart,” Schneider said. “And perhaps in a very serious way.”