KN 152 Bioenergetics: Exercise and Training

Immediate

• ATP Stores

• ADP + ADP = ATP (+AMP)

• ADP + PCr = ATP + Cr

Intermediate

• Glycolytic (“Glycolysis”)

• Glucose/Glycogen —> Pyruvate

  1. Investment (-2)

  2. Generation (+2)

Aerobic

1. Acetyl CoA (from fats or carbohydrates)

2. Krebs Cycle

3. ETC (Electron Transport Chain)

• For every 1 FADH —> 2 ATP formed

• For every 1 NADH —> 3 ATP formed

Exercise & Metabolism: Short-term, high intensity activities

Greater contribution of anaerobic energy systems

Exercise & Metabolism: Long-term, low-to-moderate intensity exercise

Majority of ATP produced from aerobic sources

• Steady-state oxygen uptake (VO2) can generally be maintained during low-to-moderate-intensity exercise