Energy Systems Flashcards
What does ATP stand for?
Adenosine Triphosphate
What does ATP do?
Provides the energy for movement. (ie. a muscular contraction)
How much ATP is readily available for use?
About 1-2 seconds of Maximal Intensity Exercise
How do you get more ATP?
By Resynthesizing (replenishing) ATP and this occurs by using the fuels PC, Carbohydrates and Fats.
What is Rate?
How fast ATP is required
What is Yield?
Amount of ATP required
What factors affect how much energy each system contributes?
- The duration of the exercise (Yield)
- The intensity of the exercise (Rate)
- The availability of oxygen
What is PC (or CP)?
Phosphocreatine - Chemical Fuel
PC is utilised rapidly and resynthesises ATP very, very quickly (but it has a small yield).
What are Carbohydrates (CHO’s)?
- Can be utilised Anaerobically and aerobically
-They have more bonds than PC, this takes longer
so ATP is resynthesised slightly slower.
What are Fats?
Fats can only be utilised aerobically and
because these are ‘large’ molecules, they take a
long time to resynthesised ATP.
What are the two types of fats?
Free fatty Acids - Bloodstream
Triglycerides - Stored
What are the two types of CHO’s?
Glycogen - Stored
Glucose - Bloodstream
What is Glycogen Sparing?
With training, larger amounts of fat/ lipids can be utilised along with carbohydrate. This allows the athlete to conserve carbohydrates for later in the performance.
What are the 3 Energy Systems?
- ATP-PC system
- Anaerobic Glycolysis system
- Aerobic System
What is the fuel for the ATP-PC system?
Phosphocreatine
What is the rate of ATP production in the ATP-PC system?
Rapid (Fastest)
What is the yield of ATP in the ATP-PC system?
Very low - Up to 10 secs (0.7ATP)
What happens after 5 seconds of maximal effort?
After 5 secs of maximal activity CP stores are 50% depleted and the Anaerobic Glycolysis system becomes the major contributor.
What is the fuel for the Anaerobic Glycolysis system?
Muscle Glycogen (Glucose)
What is the rate of ATP production in the Anaerobic Glycolysis system?
Fast rate (Slower than ATP-PC System)
What is the yield of ATP in the Anaerobic Glycolysis system?
Low - Up to 90 secs maximal (2-3ATP)
What is the by product(s) of the Anaerobic Glycolysis system?
Lactic Acid (Lactate and H+ ions)
What is the fuel for the Aerobic System?
Glycogen, Triglycerides and Amino Acids
How many ATP in fats?
441
