02. Fuels Flashcards
What releases the energy for muscular contraction?
The high energy bond between the second and third phosphate in ATP breaking apart.
The high energy bond between the second and third phosphate in ATP breaking apart results in what?
Muscle contraction
What are carbohydrates stored as in the muscle?
glycogen
What are carbohydrates in the blood?
glucose
Where is glycogen found?
within muscle
Where is glucose found?
within the blood
What are fats stored as in the muscle?
trigylcerides
What are fats in the blood?
Free fatty acids
Where are free fatty acids found?
within the blood
Where are trigylcerides found?
skeletal muscle
What are proteins in the blood?
Amino acids
What are proteins stored as in the muscle?
Amino acids/muscle
Where are amino acids found?
in the blood and within the muscle
What food fuel is contributing most significantly at rest?
Fats
When do fats contribute most significantly?
At rest or after carbohydrates have depleted (after 90mins of continuous activity)
What food fuel is contributing most significantly at sub max intensity?
Carbohydrates (CHO)
When do carbohydrates (CHO) contribute most significantly?
At sub max intensity
What are the three metabolic by products?
ADP, Pi, H+ions
What happens to fats and CHO use as exercise intensity increases?
Fats decrease contribution and CHO increase contribution
What is the yield of fats?
High
What fuel, CP, CHO or fats, has the highest yield?
fats
What fuel, CP, CHO or fats, has the lowest yield?
CP
What fuel has the highest oxygen cost?
Fats
Which fuels do not require oxygen to be broken down?
CP and CHO
