Energy systems Flashcards
(44 cards)
Why should children avoid anaerobic exercise?
- It is hard for them to remove lactic acid
- They have a lack of lactate system
Adaptation
Increased tolerance to lactic acid
- Allows more blood to supply muscles with oxygen
- Able to oxidise pyruvic acid more consistently
What does dehydrogenase do?
Breaks down pyruvic acid into lactic acid
What does phosphofructokinase do?
Breaks glucose down into pyruvic acid
Acetyl Coenzyme A
Produced when pyruvic acid is oxidised
What is the fuel used in the ATP-PC system?
Phosphocreatine
How much ATP is produced in the ATP-PC system?
1
What fuels are used in the oxidative system?
Glucose and fats
What is beta oxdation?
The breakdown of stored fats
Advantages of the aerobic oxidative system
- No fatiguing by products
- High energy yield
- High stores of glycogen and fats
Symptoms of a hypoglaecemic attack
- Sweating
- Dizziness
- Hunger
- Trembling
Adaptation
Increased creatine stores
- Improves ATP-PC system
- Can do anaerobic exercise longer
- Faster and more powerful movements
What does phosphorylase do?
Breaks glucose down into glycogen
What enzyme breaks the bond of ATP to release energy?
ATPase
What time period is phosphocreatine used as a fuel?
First 0-10 seconds
What % energy yield is contributed by protein?
15%
What is ATP made up of?
1 molecule of adenosine and 3 phosphates
What reaction is it if energy is released in the form of heat?
Exothermic
What does ATPase leave behind when it breaks down ATP?
ADP and an inorganic phosphate
Where is phopshocreatine stored?
Liver and muscles
What energy system is used for high intensity exercise?
Anaerobic glycolytic or ATP-PC
What energy system is used for low intensity exercise?
Aerobic system
Where does glycolysis take place?
In the sarcoplasm of the muscle cell
Where does the Kreb’s cycle take place?
In the mitochondria
