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Exercise Metabolism

Rest-to-Exercise Transitions

QuestionAnswer
How much ATP is produced by aerobic metabolism? Almost 100%
Oxygen deficit Lag in oxygen uptake at the beginning of exercise
Energy Requirements at Rest *Blood lactate levels are low (<1.0 mmol/L) *Resting O2 consumption: (0.25 L/min; 3.5 ml/kg/min)
Initial ATP production through anaerobic pathways: ATP-PC system & Glycolysis
Why do trained subjects have a lower oxygen deficit *Better-developed aerobic bioenergetic capacity *Due to cardiovascular or muscular adaptations
A lower O2 deficit in results in... less production of lactic acid
The failure of oxygen uptake to increase instantly at the beginning of exercise suggests that anaerobic pathways contribute to the overall production on ATP early in exercise
After a steady state is reached, the body’s ATP requirement is met via aerobic metabolism.
Created by: Angelface7717
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