It is possible for blood sugar to drop significantly during a 60 minute class; this effect is particularly noticeable in higher-intensity classes, such as spinning. This drop in glucose happens - in part - because of the effect of exercise on insulin, a hormone secreted by the pancreas. What happens to insulin secretion during exercise?
Explanation
Answer: B - During exercise, insulin secretion by the pancreas is suppressed, as a result of activation of the sympathetic nervous system. Insulin decreases blood glucose levels and facilitates the uptake of glucose, fats, and amino acids by the cells for storage, thus creating a hypoglycemic effect. During exercise, the body needs to utilize the cells’ stored fuel, so increasing insulin secretion would be counterproductive.
