Yan, the director of the Center for Skeletal Muscle Research at UVA's Robert M. Berne Cardiovascular Research Center, compiled an in-depth review of existing medical research, including his own, looking at an antioxidant known as "extracellular superoxide dismutase" (EcSOD). This potent antioxidant hunts down harmful free radicals, protecting our tissues and helping to prevent disease. Our muscles naturally make EcSOD, secreting it into the circulation to allow binding to other vital organs, but its production is enhanced by cardiovascular exercise.
A decrease in the antioxidant is seen in several diseases, including acute lung disease, ischemic heart disease and kidney failure, Yan's review shows. Lab research in mice suggests that blocking its production worsens heart problems, while increasing it has a beneficial effect. A decrease in EcSOD is also associated with chronic conditions such as osteoarthritis.
Research suggests that even a single session of exercise increases production of the antioxidant, prompting Yan to urge people to find ways to exercise even while maintaining social distancing. "We cannot live in isolation forever," he said. "Regular exercise has far more health benefits than we know. The protection against this severe respiratory disease condition is just one of the many examples."
