Exercise Physiology - Cardiovascular response to Exercise

Because at this point, enough O2 is being transported to meet metabolic demands

During short-term, light-moderate submaximal aerobic exercise, why does SV increase rapidly & then plateau at steady state within 2 minutes?

Due to increased Cardiac Output (Q)

During short-term, light-moderate submaximal aerobic exercise, why does SBP increase rapidly& then plateau at steady state within 2 minutes?

MAP; Q

TPR = _____ / ______

Due to vasodialation of the CV system

During short-term, light-moderate submaximal aerobic exercise, why does TPR decrease rapidly & then plateau?

Due to increased HR & SBP

During short-term, light-moderate submaximal aerobic exercise, why does RPP increase rapidly & then plateau at steady state within 2 minutes?

Greater

During long-term, moderate-heavy submaximal aerobic exercise, Q has a _____ absolute increase than light-moderate exercise

Thermoregulatory stress (sweat)

Why does SV have a negative drift after 30 min during long-term, moderate-heavy submaximal aerobic exercise?

To maintain Q because SV went down

Why does HR have a positive drift after 30 minutes during long-term, moderate-heavy submaximal aerobic exercise?

Continued vasodialation & a decrease in resistance

Why does SBP have a slight negative drift during long-term, moderate-heavy submaximal aerobic exercise?

Vasodialation

DBP may slightly decrease during long-term, moderate-heavy submaximal aerobic exercise, due to _______

Modest; increase

During long-term, moderate-heavy submaximal aerobic exercise, MAP has a _____ increase after initial _______

Decreases; negative

During long-term, moderate-heavy submaximal aerobic exercise, TPR ______ rapidly, plateaus, and then has a slight _______ drift

Vasodialation in active skeletal muscle & cutaneous vessels

Why does TPR decrease and drift negatively during long-term, moderate-heavy submaximal aerobic exercise?

Increase; positive

During long-term, moderate-heavy submaximal aerobic exercise, RPP ____ rapidly, plateaus and has a _____ drift

Because HR increases

Why does RPP increase & have a positive drift during long-term, moderate-heavy submaximal aerobic exercise?

Due to increases in HR; 40-50%

During incremental aerobic exercise to maximum, why does Q increase & then plateau at max? At what % of VO2 max does this become the reason?

40-50%; diastole becomes shorter & there is only so much blood

At what % of VO2 max does SV plateau during incremental aerobic exercise to maximum? Why?

Due to increased Q

During incremental aerobic exercise to maximum, why does SBP increase and then plateau at max?

A decrease of >= to 10 mmHg despite and increase in workload

For SBP changes during a VO2 max test, what would be an absolute contraindication to exercise?

If DBP is >= to 115mmHg

For DBP changes during a VO2 max test, what would be an absolute contraindication to exercise?

It may decrease

What may happen to DBP during incremental aerobic exercise to maximum?

Due to vasodilation; MAP from increasing too much

Why does TPR have a curvilinear decrease during incremental aerobic exercise to maximum? What does this prevent?

Because Q & SV increase

Why does RPP increase with a plateau at max during incremental aerobic exercise to maximum?

Gradually increases due to increase in HR

During static exercise what happens to Q? Why?

Low; high; rises

During static exercise, SV in relatively constant at ____ workloads; decreases at _____ workloads; in recovery it _____

Due to decreased preload & increased afterload

Why does SV behave the way it does during static exercise?

Steady increase

HR, SPB, DBP, MAP & RPP all have a _______ response to static exercise

Cardiac Output

What is the primary limiter of VO2 max?

Higher, lower

For absolute workload, females have a _____ Q & HR, and ______ SV than males

Lower; higher

For relative workload females have _____ Q & SV, but ______ HR than males

Higher

Males tend to have a ________ SBP than females

Lower

Females have a ____ O2 carrying capacity than men

Lower

Females have ____ VO2 max than males

SBP

Males have a higher RPP than females due to higher _____

No

During static exercise is there any difference between HR in males and females?

Yes; males always higher

During static exercise is there any difference in MAP between males and females?

Lower; Higher

Kids have a _____ SV & _______ HR than adults

No

Is VO2 max an indicator of CV endurance in kids?

Similar

During static exercise CV responses of children is ______ than adults