Which metabolic pathway is associated with high power and short duration (anaerobic)?

• A. Phosphogen/Phosphocreatine
• B. Lactic Acid/Glycolytic
• C. Oxidative/Aerobic
• D. Ketogenic pathway

Answer: (A)

High-intensity, short-duration efforts rely on the phosphagen system. This pathway uses phosphocreatine to rapidly regenerate ATP from ADP without needing oxygen, which lets you produce maximal power almost immediately for a brief burst—roughly the first several seconds of effort, before phosphocreatine stores are depleted. The system is anaerobic by nature and provides rapid energy, but its capacity is limited, so it’s ideal for very short, explosive actions.

As activity continues beyond that initial burst, anaerobic glycolysis can contribute more ATP, producing lactate and supporting a bit longer, but with a slower rate and a byproduct buildup. Oxidative (aerobic) metabolism takes over for longer, lighter efforts, since it requires oxygen and yields energy more slowly but over extended periods. The ketogenic pathway involves fat metabolism and is not suited to high-power bursts, being too slow for rapid, intense efforts.

So the pathway tied to high power and short duration is the phosphogen/phosphocreatine system.