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Excess post-exercise O2 consumption
Maximal O2 consumption
No further increase O2 uptake despite workload
Parasympathetic inhibition, sympathetic excitation prior to exercise
Increased blood flow to active muscle and capillary recruitment
How is venous return increased?
Sympathetic vasocontriction of capacitance vessels
How is total peripheral resistance affected?
- Progressive decrease
- Compensates for increased CO to maintain blood pressure
Limits of dynamic exercise
- Respiratory system
- Cardiac capacity
- Peripheral circulation
- Metabolic capacity of muscles
Autonomic result of conditioning
- Higher vagal tone, lower sympathetic tone
- Lower resting heart rate
How is static exercise different?
Blood pressure increases because peripheral resistance doesn't decrease to compensate for increased CO
- Valve thickened/fused - impedes flow into left ventricle
- Limits stroke volume
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