basics 2 Flashcards
(10 cards)
1
Q
how do we go from L of O2 to kcals
A
5 kcals x l/min x time = energy expended
2
Q
RER is used to determine either carbs or fat are being used what are the values where carbs and fats are starting to be used
A
about 85 carbs below 85 fats
3
Q
more intense and less trained burns more ____ as fuel
A
carbs
4
Q
greater duration and more trained burns more _____ as fuel
A
fats
5
Q
what is the fat burning zone
A
40-60% of VO2 max
6
Q
maximal heart rate does not limit cardiovascular capacity because..
A
CO = HR x SV
if Hr increases there will be a proportional decrease in SV
7
Q
what is the main limiting factor of CO
A
SV
8
Q
signaling factors that increase mitochondrial enzymes
A
- increases in calcium
- perturturbations in high energy phosphate levels (ATP , ADP, AMP, Pcr, Cr)
- reactive oxygen species
9
Q
exercise training increases what
A
mitochondria in skeletal muscle
9
Q
A
