Energy Systems Flashcards
(4 cards)
What is the function of myofibibrilar ATPase?
Enzyme that catalyses this reaction
Enables the hydrolysation of ATP to ADP
Located in head of myosin molecule
Please explain the energy yield of the LA system
Glycolysis converts glucose to pyruvate
Requires an input of 2 ATP
However the yield is an output of 4 ATP
Balance is a gain of 2 ATP per glucose molecule
converted to pyruvate
Please describe this figure, slide20.
Association between exercise intensity and fuel utilisation.
At rest, most energy come from fat with minimal contributions of CHO
With increasing intensity CHO utilisation increases and fat reduces
Training and SNS stimulation may affect substrate utilisation
What are the 3 different sources for energy (energy systems) that is used in the body?
ATP/ PC System (Phosphagen)- Anaerobic
Glycolytic (Lactic Acid)- Anaerobic
Mitochondrial respiration- Aerobic
