Which sport primarily relies on the ATP-PC energy system?

• A. 1500m run
• B. 100m sprint
• C. Marathon
• D. Long jump

Answer: (B)

ATP-PC energy system provides energy extremely quickly for very short, high-intensity efforts (about up to 10 seconds) without needing oxygen. It uses stored phosphocreatine to rapidly regenerate ATP, so activities that require a rapid, maximal effort from start to finish rely on it most. Among the options, the 100m sprint is the classic example: the race lasts only a few seconds and athletes work at near-maximal intensity throughout, so the phosphagen system supplies the bulk of the energy. The 1500m run and marathon are driven mainly by aerobic metabolism (with some anaerobic glycolysis during surges), while the long jump involves a brief explosive effort that also taps the phosphagen system but is not a duration-focused example like the short sprint.