ENS 304 Lecture Notes - Lecture 5: Phosphocreatine, Exercise Intensity, Myoglobin
30 Jul 2020
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Lab 5: oxygen deficit and epoc note paper. Atp-cp: immediate energy usage from atp (supplies first 2-3 seconds) and creatine phosphate (up to 10-15s of max velocities) Anaerobic glycolysis: also known as a fast-glycolytic pathway; first steps of carb metabolism. Oxidative: aerobic metabolism; carb and fat metabolism for longer distances. Oxygen deficit (o2d): the difference between the oxygen required for exercise and the o2 actually being used by mitochondria. Note: the o2 demand caused by the two anaerobic systems providing energy before meeting steady-state exercise demands with the aerobic system and later needs replenishing. Vo2 kinetics: rate of mitochondrial enzyme activation and is primarily influenced by training adaptations. Benefits of reaching steady-state sooner: decreased use of anaerobic systems, decreased oxygen deficit, decreased amount of metabolic byproducts, ultimately helping to lower fatigue. Excess post-exercise oxygen consumption (epoc): elevated vo2 after exercise when resting.
