! ENERGY SYSTEMS !

Question 1

What is the aerobic system?

Answer 1

• when energy levels are low and oxygen supply Is high.

Question 2

Name the 3 stages of aerobic respiration?

Answer 2

Glycolysis
Krebs Cycle
The Electron transport chain

Question 3

What is the anaerobic ATP-PC energy system?

Answer 3

• used without oxygen
• energy levels are required for a short maximal movement (sprint)
• last up to 10 seconds.
• phosphocreatine is broken down

Question 4

what is the anaerobic system?

Answer 4

• supplies energy for uptown 3 minutes

- high intensity

Question 5

What intensity are slow twitch fibres used for?

Answer 5

• low to medium intensity exercise

- aerobic respiration will be main source of energy.

Question 6

What intensity are fast twitch fibres used for?

Answer 6

• high intensity activities

- anaerobic energy systems will be main source of energy.

Question 7

What is lactate accumulation?

Answer 7

• lactate levels increase as a byproduct of increases intensity.
• slows down enzyme activity
• affects breakdown of glycogen
• causes muscle fatigue

Question 8

What is OBLA?

Answer 8

• onset blood lactate accumulation

- point at which levels go above 4 millimoles per litre

Question 9

What is maximal oxygen deficit?

Answer 9

• performer lacks enough oxygen at the beginning of exercise and they have to work more anaerobically.

Question 10

What is sub maximal oxygen deficit?

Answer 10

• when there is not enough oxygen at the start of exercise to provide all the energy aerobically.

Question 11

Factors effecting the systems

Answer 11

• muscle fibres
• training
• fitness
• diet
• confidence