Back to the full dot-point answer
WAPhysical EducationQuick questions
Unit 3: Factors Affecting Performance
Quick questions on ATP-PC energy system: WACE Physical Education Studies Unit 3
3short Q&A pairs drawn directly from our worked dot-point answer. For full context and worked exam questions, read the parent dot-point page.
What are by-products?Show answer
The ATP-PC system produces no fatiguing by-products such as lactic acid; the main by-product is heat. This is why repeated short sprints can be performed with adequate rest: there is no lactate accumulation to cause fatigue, only the need to restore phosphocreatine stores.
What is recovery?Show answer
Phosphocreatine stores are restored quickly once effort stops, using oxygen during recovery. About half is replenished within roughly 30 seconds and the stores are largely restored within two to three minutes. This is why interval training for speed uses short maximal efforts with relatively long rest, allowing the ATP-PC system to recharge between repetitions.
What is sports that rely on it?Show answer
The ATP-PC system dominates any maximal effort lasting up to about ten seconds: the 100 metre sprint, a long jump or high jump, a shot put or javelin throw, a single heavy weightlifting attempt, and the explosive sprints, jumps and tackles within team sports. In these, performance depends on the rate of energy supply, which is this system's strength.
Have a question we have not covered?
This dot-point answer is short enough that we have not extracted many short questions yet. Read the full dot-point answer or ask Mo, our study assistant, in the chat for follow ups.