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Effect of Exercise and Stress on Blood Glucose Levels
Exercise
Exercise initially decreases the production of insulin and increases the secretion of glucagon resulting in higher blood glucose levels. After several minutes, the exercising muscle has increased insulin sensitivity, which facilitates the uptake of glucose for an extended period, thus lowering glucose levels. (3)
Stress
Stress hormones increase blood glucose levels. Corticosteroids increase glucagon release and insulin resistance, resulting in excess glucose production. Epinephrine increases the rate of glycogenolysis in both the muscles and the liver. The net effect is hyperglycemia.(3,6)
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Stress on Blood
