Which is the mechanism of action demonstrated by exercise in managing blood glucose levels?
a. Exercise causes release of glucose and promotes a reduced blood glucose level.
b. Exercise on a regular basis causes a reduction in lean body mass, which helps regulate blood glucose levels.
c. Increased muscle mass and less fat tends to normalize blood glucose levels because glucose is used by muscle cells when exercising.
d. Exercise stimulates the liver, the primary storage and utilization site of glucose, to release glucose.
ANS: C
Exercise leads to more muscle and less fat, so blood glucose levels tend to return to normal. Exercise increases the rate of glucose uptake in the contracting skeletal muscles. Exercise on a regular basis prevents reduction in lean body mass and protein wasting. The liver is not the primary storage and utilization site of glucose.
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