Name: ______________________
IB
Sports, Exercise & Health Science
Energy Systems
Video Worksheet
Anaerobic Energy Systems
1. “Anaerobic” means: ______________________________________
2. In the ATP-PC system, what does the “PC” stand for?
_____________________________________
3. Draw and label the following 3 steps:
a. ATP releases a phosphate group
b. the role of phosphocreatine
c. ADP gaining a phosphate group
4. How long does the ATP-CP system last and give an example of a sport it is useful in:
________________________________________________________________________________
_________________________________________________________________________________
5. Name and describe the energy system that the body uses after the ATP-CP system:
_____________________________________________________________________________________
_____________________________________________________________________________________
Video Worksheet continued…
Aerobic Energy System
1. “Aerobic” means: ______________________________________
2. When does the aerobic system start working? _________________________________________
3. Define aerobic glycolysis: ________________________________________________________
4. What is the main source of stored energy that the aerobic system uses? _____________________
a. How long does this source generally last? ______________________________________
b. What stored energy is used next for energy? ____________________________________
5. Explain what is happening in a marathoner’s body when they “hit the wall”:
_____________________________________________________________________________________
_____________________________________________________________________________________
_____________________________________________________________________________________
6. Label on the diagram below where the following processes occur (text book pg.67):
a. Gylcogenolysis
b. Gylcolysis
c. Phosphorylation