1.6 Cardiovascular drift

Question 1

what happens to stroke vol during sub maximal exercise

Answer 1

increases

continues to increase whilst exercising up to approx 60% of maximum effort

Question 2

explain cardiovascular drift

Answer 2

• during prolonged steady state Ex. stroke vol will peak & start to slowly decrease
• increased core body temp causes a loss of fluids through sweating = viscosity of b. & the vol of b. plasma to decrease, so it cant pass as easily through the body, decreasing the vol b. that can be ejected per beat
• to compensate decrease in s.v & maintain cardiac output HR increases
• … cardiac output maintained so performer can carry on without fatigue