1.7 Cardiovascular drift

Question 1

What is cardiovascular drift?

Answer 1

heart rate increases to compensate a decreasing stroke volume to maintain cardiac output
during steady state exercise in warm environment

Question 2

What happens to stroke volume?

Answer 2

during prolonged steady state exercise
stroke volume will peak and start to decrease

Question 3

Why does stroke volume change?

Answer 3

as body temp increases, causing them to sweat to release heat energy via evaporation
simultaneously, stroke volume decrease as fluid lost in blood as lost through sweat

Question 4

What happens when stroke volume changes?

Answer 4

reduced plasma volume
reduced venous return
causes heart rate to increase to maintain cardiac output

Question 5

What happens to cardiac output

Answer 5

cardiac output also increase as more energy need to cool body/sweat