energy systems

Question 1

what are the different energy pathways

Answer 1

ATP-CP system
Lactic acid system
aerobic system

Question 2

provide a summary of the characteristics of the ATP-CP system - dot points

Answer 2

• anaerobic: no oxygen required
• Most rapid supply of energy
• uses chemical fuel: creatine phosphate
• very limited ATP production
• used for any high power, short-duration activity: 0-15sec
• muscle stores of ATP and CP are limited

Question 3

provide a summary of the characteristics of the lactic acid system - dot points

Answer 3

• anaerobic - no oxygen
• rapid supply of energy
• uses food fuel
• Limited ATP production - 1 molecule of glucose yields 2 molecules of ATP
• used for activities of 15sec to 2 min
• lactic acid produced in the reaction - causes fatigue

Question 4

provide a summary of the characteristics of the aerobic system - dot points

Answer 4

• aerobic - oxygen involved in the reaction
• slow supply of energy
• uses food fuel - glucose, fats and protein
• unlimited ATP production
• uses for long-duration endurance activities: 2min or longer
• only by-products are carbon dioxide and water

Question 5

what is ATP

Answer 5

when food is eaten it provides energy required for the contraction of muscles. Chemical compound

Question 6

What does ATP stand for

Answer 6

adenosine triphosphate

Question 7

can the energy be contained from fats, proteins and carbs and used directly by the body

Answer 7

no

Question 8

where are is ATP stored

Answer 8

muscle fibre

Question 9

ATP-CP energy system - sentence

Answer 9

ATP-CP energy system produces an immediate burst of energy. Small amounts of energy are stored in the muscles. Energy is released when phosphate bonds of ATP are broken. This system is powered by ATP and creatine phosphate.

Question 10

Examples of ATP-PC systems sports

Answer 10

• sprinting
• jumping
• weight lifting

Question 11

lactic acid system - sentences

Answer 11

The lactic acid system uses carbohydrates from food as fuel for forming ATP. Carbohydrates are converted into glucose which is transported to the muscles and liver to be stored as glycogen. Enzymes convert glycogen into lactic acid which releases energy to form ATP.

Question 12

examples of lactic acid system

Answer 12

• 200m swim

- 400m sprint

Question 13

what else is the lactic acid system called?

Answer 13

Anaerobic Glycolysis system

Question 14

how long is the recovery time for the lactic acid system

Answer 14

60-90 mins for optimal recovery.

Question 15

what does active recovery result in

Answer 15

results in faster removal of lactic acid than passive recovery eg. slow walking can speed up recovery

Question 16

what is the Aerobic energy system - sentence form

Answer 16

The aerobic energy system requires oxygen. ATP is synthesised by the breakdown of carbohydrates, fat and protein. Stored glycogen in muscles is depleted, and glycogen in the liver is used.

Question 17

can the aerobic system last forever

Answer 17

If you keep providing your body with energy supplies, this energy system can last forever.

Question 18

Aerobic system examples

Answer 18

• endurance cyclists

- 800m sprint