cardiovascular system during exercise Flashcards
untrained athletes heart rate at rest
70bpm
untrained athletes HR at sub maximal
100bpm
untrained athletes HR at maximal
220 - age
untrained athletes stroke volume at rest
70ml
untrained athletes SV at sub maximal
100ml
untrained SV at maximal
100ml but will decrease
untrained athletes cardiac output at rest
5l/min
untrained athletes Q at sub maximal
10l/min
untrained athletes Q at maximal
20l/min
trained athletes HR at rest
50bpm
trained athletes HR at sub maximal
120bpm
trained athletes HR at maximal
220 - age
trained athletes stroke volume at rest
100ml
trained athletes SV at sub maximal
200ml
trained athletes SV at maximal
200ml but will decrease
trained athletes cardiac output at rest
5l/min
trained athletes Q at sub maximal
24l/min
trained athletes Q at maximal
40l/min
what is the relationship between exercise intensity and stroke volume
SV increases inline with exercise intensity
SV plateaus as exercise intensity continues to rise
At max, SV decreases
max SV is reached during sub maximal intensity
cardiovascular drift
a decline of SV as we reach max intensity
why does cardiovascular drift occur
SV increases because venous return increases (more blood returning, moire can leave)
HR continues to increase which doesn’t leave enough time for ventricles to fill completely
Less blood in the ventricles, therefore less ejected per beat
Results in decreased SV.
