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Beta-oxidation:

Creatine kinase:

Electron transport chain:

Gluconeogenesis:

Glycogen:

Glycogenesis:

Glycogenolysis:

Glycolysis:

Glycolytic pathway:

Krebs cycle:

Mitochondria:

NAD+ and NADH:

Oxaloacetate:

Oxidative phosphorylation:

Phosphate (P):

Phosphocreatines (PCr):

Pyruvate:

Triglycerides:

Research has shown that supplementation of creatine can help increase the availability of PCr, improve the amount of force your muscles produce, and improve power endurance, which is so important for difficult climbing objectives.

If you continue at the same intensity for the next 10 to 80 seconds, and you have limited oxygen in the system (that is, if you are gasping for air), energy production will follow the path of anaerobic or fast glycolysis (burning glucose). This process will result in a surplus of hydrogen ions. The problem with hydrogen ions is that they fatigue muscle cells and build up as acid (metabolic acidosis). However, to put it simply, a buffer is created so that muscle contraction can continue. This buffer, called lactate, is formed from a pyruvate and NAD+ attaching to the hydrogen ions, decreasing the acidity. Each time you gasp for air, providing oxygen, this connection breaks and leaves a pyruvate available again to pick up another hydrogen ion. As long as you continue to have just enough oxygen in the system to match the intensity, your system will continue to generate ATP. This cycle persists until you take a break or the intensity becomes too much for the system.