ATP
Immediate energy currency of cells.
Public flashcard set
Fitness: Energy Systems
How the body fuels work.
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Flashcards
Phosphagen system
ATP-PCr; very short high power.
Glycolysis
Breaks carbs for anaerobic/aerobic ATP.
Oxidative system
Aerobic ATP from carbs/fats.
VO2max
Max oxygen uptake; aerobic capacity.
Lactate threshold
Intensity where lactate rises sharply.
EPOC
Elevated post-exercise oxygen consumption.
Aerobic
With oxygen; longer duration work.
Anaerobic
Without relying on oxygen pathways primarily.
Steady state
Oxygen supply matches demand.
RER
Respiratory exchange ratio (fuel clue).
Calorie
Energy unit; kcal in nutrition labels.
MET
Metabolic equivalent of task.
Excess post-exercise burn
Afterburn from EPOC (often modest).