Energy Systems Flashcards
(43 cards)
Where are carbs stored?
Liver and muscles
What are fats absorbed as ?
Where?
As fatty acids in the small intestine?
What are fats stored as?
Triglycerides
What food fuel is used at rest?
ATP stores
Fats and carbs
What food fuels are used at high intensity short duration?
ATP used quickly
PC provided ATP re synthesis
Glycogen stores used
What food fuel is used in low intensity, high duration?
Carbs and fats
ATP regenerated from fats
What is glycogen sparing?
Using fats earlier
Conserve glycogen stores
Only release carbs at higher intensity work
What is carboloading?
Raise glycogen stores above normal levels
- before endurance event
- deplete before and prolong exercise
- reflection of carbs
- light exercise and rest
What nutrition should be consumed before an event?
Fluids
Complex carbs
Fruit and small amount of glucose
What nutrition should be consumed during an event?
Isotonic drinks with sodium and glucose
What nutrition should be consumed after an event?
Hypertonic drinks
High carbohydrate meal
What is bonking?
Hitting the wall, when all muscle glycogen is depleted
What does low GI food do ?
Provides energy slowly
Good for before exercise
What does food high in GI do?
Energy quickly
Easy to digest
During exercise
How long does ATP store supply last for?
2-3 seconds
How long does the ATP/PC system last for?
3-10 seconds
What is the coupled reaction?
Phosphocreatine breaks to phosphate + creatine + energy
Energy + ADP + phosphate = ATP
What enzyme aids the rest thesis of ATP from PC?
Creatine kinase
Advantages of ATP PC system?
Quick
Don’t need oxygen
PC stores recovered quickly
Disadvantages of ATP PC system?
Lasts for short time
Re synthesis of PC only occurs when oxygen is present
How long does the lactic acid system last?
Between 30-60 seconds
Process or glycolysis?
Glucose to glucose -6-phosphate to pyruvate
What enzymes aid glycolysis?
Glucose phosphorylase
Phosphofructokinase
What aids pyruvate to lactate?
Lactate dehydrogenase
