Anaerobic energy provision

Question 1

The ATP-Phosphocreatine system…

1. Is activated when ATP levels in the cells drop
2. Provides fast energy for up to 30s
3. Is dependent on succinate dehydrogenase function
4. Is the energy system that provides the most energy during a wingate test

Answer 1

1. Is activated when ATP levels in cells drop.

Question 2

What is the key enzyme of the Phosphocreatine system?

Answer 2

Creatine Kinase

Question 3

True/False: To achieve the highest power output during a Wingate test, the applied load to the cycle ergometer has to be 7.5% of the participant’s body mass

Answer 3

False, 7.5% is an optimal load

Question 4

How many molecules of ATP can be generated with energy released by the hydrolysis of one molecule of phosphocreatine?

Answer 4

1

Question 5

How do we get energy from ATP?

Answer 5

ATPase splits ATP into ADP, a free organic phosphate and free energy

Question 6

What are the 3 way to replenish ATP?

Answer 6

• ATP-PCr system (Anaerobic)
• Glycolytic system (Anaerobic) - BLa
• Oxidative system (Aerobic) - Oxygen uptake

Question 7

What are the stages of the ATP-PCr system?

Answer 7

1. PCr is split into creatine and an inorganic phosphate by creatine kinase
2. The inorganic phosphate bonds with the ADP to form ATP

Question 8

How long can we do maximal exercise for by just using the ATP-PCr system?

Answer 8

3 - 15 seconds

Question 9

True/False: There is an indirect relationship between creatine and exercise intensity

Answer 9

True, the more intense the exercise the more PCr is used