Exercise Physiology: Theory and Application to Fitness and Performance 9th Edition by Scott Powers, Edward Howley

Exercise 9

Briefly explain how glucose can be taken into the muscle at a high rate during exercise when plasma insulin is reduced. Include the role of glucose transporters.

Step 1 of 2

Insulin is the hormone that promotes uptake of glucose by cells. However it is observed that endurance exercise or prolonged submaximal exercise causes a reduction in plasma insulin level. In spite of this reduction, the muscles are capable of taking up glucose 7 to 20 times faster than at rest.