day 6 - VO2 Flashcards
what is absolute VO2 expressed in
L/min
what is relative VO2 expressed in
mL/kg/min
what kind of VO2 is expressed in L/min
absolute VO2
what kind of VO2 is expressed in mL/kg/min
relative VO2
each L of oxygen consumed equals BLANK kcal expended by cells
= 5 kcal
average VO2 at rest (w/units)
3.5 mL/kg/min
to find the caloric expenditure rate (CER) you must use the BLANK VO2
ABSOLUTE VO2 value
homeostasis (def)
dynamic consistancy: maintaining of a fairly constant or relatively stable internal environment
how does body mediate/regulate homeostasis (pathway sorta)
1) receptors: capable of detecting change(s)
2) integrating center: assesses the input and initiates response (makes plan)
3) effector: corrects changes to internal environment
what is the only positive feedback loop
pregnancy/childbirth
what kind of feedback do the control systems use
negative feedback loops!!
response reverses the innitial disturbance
steady state (def)
relatively stable internal environment during physical activity/exercise
most people’s VO2max is around
4L/min
rest-to-exercise transitions
oxygen consumption rate (VO2) increases rapidly as exercise begins (or due to increased intensity)
VO2 reaches VO2 MAX during BLANK exercise
during SEVERE INTENSITY exercise
VO2 MAX (def)
maximal capacity to transport + utilize oxygen at cellular level
oxygen deficit (def)
the difference between VO2 in the first few minutes of exercise and the level after a steady state has been reached
what kind of ATP production/metabolism is happening during oxygen deficit
ANAEROBIC atp production
after steady state is reached, what kind of ATP production/metabolism is happening
AEROBIC atp production (USING O2)
more trained subjects produce MORE/LESS lactate because BLANK
LESS lactate because they have more cellular machinery (mitochondria, etc) to do aerobic ATP production and therefore reach steady state sooner (spend less time in anaerobic, lactate-producing state)
what is ‘elevated VO2 for several minutes immediately following exercise’ called
excess post-exercise oxygen consumption
(EPOC)
excess post-exercise oxygen consumption (EPOC)
elevated VO2 for several minutes immediately following exercise
