A discovery in the muscles of long COVID patients may explain exercise
troubles
Hit the gym. Get back in shape.
That's what many patients with long COVID are told when they talk of
the crushing fatigue that envelops them after even a light bout of
physical activity.
These symptoms of exhaustion, or post-exertional malaise as it's
called, are a hallmark of long COVID and similar complex illnesses
like chronic fatigue syndrome or ME/CFS.
...
...
By taking biopsies from long COVID patients before and after
exercising, scientists in the Netherlands constructed a startling
picture of widespread abnormalities in muscle tissue that may explain
this severe reaction to physical activity.
Among the most striking findings were clear signs that the cellular
power plants, the mitochondria, are compromised and the tissue starved
for energy.
"We saw this immediately and it's very profound," says Braeden
Charlton, one of the study's authors at Vrije University in Amsterdam.
The tissue samples from long COVID patients also revealed severe
muscle damage, a disturbed immune response, and a buildup of
microclots.
"This is a very real disease," says Charlton. "We see this at
basically every parameter that we measure."
https://www.npr.org/sections/health-shots/2024/01/09/1223077307/long-covid-exercise-post-exertional-malaise-mitochondria
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