Characteristics of the 3 energy systems Flashcards
(10 cards)
What chemical fuel provides energy for muscular contractions?
Adenosine triphosphate (ATP).
How long do the muscles’ stored ATP supplies typically last during exercise?
1 - 2 seconds
What are the three energy systems that rebuild ATP?
ATP-CP energy system, Anaerobic glycolysis energy system, and Aerobic energy system.
Which two energy systems produce ATP quickly and without oxygen?
The ATP-CP and anaerobic glycolysis energy systems.
How does the aerobic energy system produce energy compared to the anaerobic systems?
It produces ATP at a slower rate but with a higher yield (more ATP overall).
What is the relationship between the rate and yield of ATP production?
There is an inverse relationship—systems that produce ATP quickly have a lower yield, and systems that produce ATP slowly have a higher yield.
What factors determine how much each energy system contributes to energy/ATP production?
The intensity of effort, duration of effort, and availability of fuels.
How do rest periods in intermittent sports benefit the ATP-CP system?
Rest periods allow creatine phosphate (CP) to be resynthesized, enabling it to be used again throughout the activity.
How can athletes prevent carbohydrates from running out during performance?
Athletes can consume foods during performances to decrease the likelihood of carbohydrates running out.
What happens in continuous activity once the aerobic energy system takes over?
Once the aerobic energy system becomes the major energy producer, it continues to produce energy throughout the activity, even with increasing intensity.
