Numerous cardiovascular changes occur during exercise. All share two common goals:
1. Allow the system to meet the increased demands placed on it.
2. Carry out the system functions with maximum efficiency.
Match the best parameter with its respective explanation:
- Increases with increased exercise intensity until exhaustion, when it begins to level off. Plateaus with constant work rate at submaximal exercise levels.
- Increases during exercise. Most researchers agree that it plateaus at exercise intensities between 40% and 60% of maximal capacity, and remains unchanged up to exhaustion.
- Increases with increased exercise intensity to ensure adequate oxygen and nutrients reach muscles and waste products are cleared away. Probably plateaus when cardiac output approaches maximal exercise intensities.
- Increases with increased exercise, though systolic and diastolic pressure measures do not both increase to a similar degree and diastolic may not increase at all.
- Increases during exercise to active muscles and decreases to kidneys, liver, stomach, and intestines.