Cardio-vascular System During Exercise And During Recovery

Question 1

Describe the 5 steps of a aerobic heart rate graph

Answer 1

1. Rise in bpm before exercise called anticipatory rise
2. Fast inc at start of exercise to deal with increased 02 demand
3. Bpm plateaus as supply and demand meet
4. Fast decrease in bpm post exercise due to drop in VR
5. Slower decrease in bpm until bpm reaches pre-exercise value

Question 2

Describe the 5 stages of an anaerobic bpm graph

Answer 2

1. Anticipatory rise
2. Fast increase to cope with 02 demand
3. Slower increase as supply never meets demand
4. Quick decrease in bpm due to decrease in VR
5. Bpm takes longer to get to pre-exercise value due to high intensity

Question 3

What is it called when stroke volume decreases due to an excessive increase in bpm

Answer 3

Cardiovascular drift

Question 4

When is SV maximised

Answer 4

During sub-maximal intensity exercise

Question 5

Describe the graph for SV for exercise intensity

Answer 5

1. SV increases linearly with exercise intensity
2. Heart rate plateaus as intensity continues to rise
3. At maximal-intensity exercise the SV decreases

Question 6

Describe the graph for Q during exercise intensity

Answer 6

Q increases linearly with exercise intensity

2. Q plateaus as exercise continues to rise to maximal intensity

Question 7

Why does Q stay the same at maximal intensity but SV decreases

Answer 7

Chambers can’t fill fully with the speed of bpm so less is ejected per beat but the increase in bpm ejects the same amount each minute

Question 8

What is the average value of bpm, SV and Q for an untrained athlete at rest

Answer 8

Bpm = 70bpm
SV = 70ml
Q = 5l/m

Question 9

What are the average values for bpm, SV and Q for an untrained athlete during sub-maximal intensity exercise

Answer 9

Bpm = 100bpm
SV = 100ml
Q = 10l/m

Question 10

What are the average values for bpm, SV and Q for untrained athletes during maximal intensity exercise

Answer 10

Bpm = 220 - age bpm
SV = 100ml then will decrease slowly
Q = 10l/m

Question 11

What are the average values for bpm, SV and Q for a trained athlete at rest

Answer 11

Bpm = 50bpm
SV = 100ml
Q = 5l/m

Question 12

What are the average values for bpm, SV and Q for a trained athlete during sub-maximal exercise

Answer 12

Bpm = 120bpm
SV = 200ml
Q = 24l/m

Question 13

What are the average values for bpm, SV and Q for a trained athlete during maximal intensity

Answer 13

Bpm = 220 - age bpm
SV = 200ml then will slowly decrease 
Q = 24ml/m