The three energy systems that replenish ATP are creatine phosphate, anaerobic glycolysis, and oxidative phosphorylation.

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These are the three primary energy systems used in the body to replace ATP. Creatine phosphate provides immediate energy, anaerobic glycolysis provides energy for moderate to high intensity exercise, and oxidative phosphorylation provides energy for low to moderate intensity exercise and is the primary energy system used during aerobic exercise.

The Three Energy Systems That Replenish ATP Are Creatine Phosphate