Group Exercise Instructor Free Test Prep

Category - ACSM Group Exercise Instructor Practice Test

With regular cardiovascular endurance training, blood flow to working skeletal muscle is increased by ALL BUT ONE of these means. Which mechanism is NOT USED to increase blood flow?
  1. A decrease in the recruitment of capillaries in the skeletal muscles being trained
  2. An increase in the number of capillaries in the skeletal muscles being trained
  3. An effective blood flow redistribution from inactive muscles to active muscles
  4. An increase in blood volume
Explanation
Answer: A - Blood flow to working skeletal muscle is not increased by a decrease in the recruitment of capillaries; the opposite is true. The body works to shunt blood to working muscles by: Increasing both the number and the recruitment of capillaries; creating greater efficiency in blood flow by redistributing blood from inactive to active muscles; and by increasing blood volume. All serve to increase blood flow to the working skeletal muscles during cardiovascular endurance training.
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