cardiorespiratory adaptations Flashcards
what is the vo2 max test?
measures how much o2 was used by the body at maximal intensity
if number keeps increasing overtime, that tells you aerobic adaptations are happening inside body = increase body ability to transport/use o2
explain blood volume adaptations
increased blood volume
more water retained = increased blood
body can manipulate, causing body to retain little bit more blood volume
are adaptations permanent?
no, one adaptation makes a huge difference, but when they all happen together = significantly improve someone VO2 score
what increases blood flow to the muscles?
blood volume
capillarization
heart size
stroke volume
heart rate
cardiac output
what is pulmonary ventilation (Ve)?
tida volume x breaths per minute
volume of expired air per minute
explain heart rate adaptations
resting HR decreases due to larger heart
maximum HR increases in older people
HR recovery time is improved
what would we look at vo2 max for adaptations and not just time?
because timing coulf be from different reasons
ex: new bike, wind, etc.
DOES NOT MEASURE SPORT PERFORMANCE
explain heart size adaptations
increased heart size
increased left ventricular internal diameter (chamber size)
can hold more blood=more blood out of aorta per beat = increase SV
explain stroke volume adaptation
increased stroke volume due to larger heart
more blood pumped out per beat
increased contractility
more effective blood shunt (venous return)
more blood pumped out at lower HR
explain capillarization
increase capillarization in muscles
more apillaries to store/hold extra blood volume
muscles can receive more blood
explain cardiac output adaptations
HRxSV
maximal cardiac output increases with training (mostly from increased SV)
what is the Fick equation?
VO2= SV x HR x A-VO2 difference
what are metabolic adaptations that occur?
lactate threshold increases
improved buffering ability
cori cycle = enzyme increase
