Mod 6: Cardiorespiratory Integration and Adaptations to Training

Question 1

How does the A-VO2 (arterial-venous) difference change from rest to exercise?

Answer 1

at rest: a vo2 =50 ml/L
arterial blood o2=200 ml, venous blood o2= 150 ml/L
200-150=50

Intense Exercise: 150 ml/L
arterial blood o2= 200ml/L, venous blood O2=50 ml/L
200-50-150 ml/L
muscle takes more oxygen

Question 2

fick equation

Answer 2

VO2= Q x avo2 diff

relationship between metabolism and cardiovascular function
- amt of O2 consumption (VO2)= is dependent on the blood flow (cardiac output)(Q) multiplied by the amt of O2 thats extracted from the blood by that tissue

-more blood flow and more O2 extraction by tissues =higher VO2

REST vo2= 5 l/min x 50 ml o2/l =0.25 L o2/min
maximal exercise VO2= 20l/min x 150 ml o2/l
= 3l o2/min —–> VO2 MAX

Question 3

summarize the acute cardiovascular responses to exercise

Question 4

describe the relationship between pressure, flow, and resistance

Question 5

explain the blood pressure response to aerobic and strength exercise

Question 6

blood pressure
-primary determinants (2)

Answer 6

the average force exerted by blood against vasculature

1. cardiac output
2. peripheral resistance

Question 7

mean arterial pressure (MAP)

Answer 7

average driving pressure during cardiac cycle

MAP = DBP + (1/3 (SBP-DBP))

Question 8

how does systolic and diastolic BP change during dynamic exercise

Answer 8

during exercise, SBP increases, but DBP stays the same

ex. running

Question 9

how does systolic and diastolic BP change during resistance exercise

Answer 9

BOTH SBP and DBP SKYROCKETTTT INCREASEE

Question 10

how does aerobic training alter submaximal VO2 when assessed at the same absolute OR relative workload?

Question 11

how does submaximal and maximal SV, HR, and Q change in reponse to aerobic training