Aerobic (VO2) vs. Anaerobic Metabolism Flashcards
Does Anaerobic metabolism require oxygen?
NO
What is Anaerobic metabolism’s ATP yield per molecule of glucose?
2 ATP’s yielded per 1 glucose
Does Aerobic Metabolism require oxygen?
YES
What is Aerobic metabolism’s ATP yield per molecule of glucose?
38 ATP’s yielded per 1 glucose
How much more efficient is aerobic metabolism to anaerobic?
19 times more efficient.
What types of cells are typically anaerobic in nature?
Connective Tissue (bone, cartilage, RBC’s), and skeletal muscle.
What types of cells are aerobic in nature?
Heart, CNS, PNS, Skeletal Muscle.
What is maximal VO2 a measure of?
Plateau of O2 consumption at maximal physical effort. (max performance output / aerobic fitness)
When is VO2 Max reached?
When workload oxygen consumption remains at steady stage despite an increase in workload.
What is a major factor of endurance?
Anaerobic or Ventilatory Threshold (AT or VT).
What is the Ventilatory Threshold?
The point during exercise at which ventilation starts to increase at a faster rate than VO2 supplied.
What begins to accumulate once Anaerobic Threshold is reached?
Lactic acid begins to build up since the work is now being performed anaerobically.
What is the ventilatory threshold?
When breathing surpasses normal ventilation rate.
For most people, at what % of VO2 max is AT or VT reached?
50 - 75% VO2 Max
What is a major factor of Ventilatory Threshold?
The maximal ventilation of (air in & out) achieved by the lungs. Fitness is a big component.
What is a physiological marker that is widely used as a predictor of performance (aerobic + skill)?
Lactacte Threshold
Push the ceiling, raise the floor…. VO2 Max and LT, which quality is the ceiling and which is the floor? Why?
VO2 Max indicates an aerobic potential (ceiling), while LT is the maker for how much of that potential is being tapped into (floor).
What is the gold standard for endurance or aerobic capacity testing?
Oxygen Consumption (VO2)
What is a MET?
1 MET = Amount of oxygen a person consumes (or energy expended) per unit of body weight during 1 minute of rest.
1 MET = ____ ?
1 MET = 3.5 mLO2/Kg * min
What is the relationship with VO2 & MET’s?
With activity, VO2 increases and therefore MET”s increase.
What is the conversion equation for converting to MET’s?
Divide by 3.5 mL O2/Kg
