Core 2: Factors Affecting Performance Flashcards
1.1 What are the 3 energy systems?
Alactacid system (ATP/PC)
Lactic acid system
Aerobic system
- 1 For the Alactacid system, what is the:
- source of fuel
- duration
Alactacid system source of fuel:
- 90g of ATP (for first 1-2 s)
- CP (next 10-15 s)
- 1 For the Alactacid system, what is the:
- efficiency
ATP - readily available but limited supply
PC- runs out quickly
- 1 For the Alactacid system, what is the:
- cause of fatigue
Depletion of fuel- ATP and PC
- 1 For the Alactacid system, what is the:
- by-products
Only heat
- 1 For the Alactacid system, what is the:
- process and rate of recovery
Recovers as creatine in the cell connects to the free phosphates again - storing them as PC to be used when they are needed again.
50% PC recovered after 30s
100% after 2min
- 1 For the Lactic acid system, what is the:
- source of fuel
Source of fuel:Carbohydrates
Glycolysis- breakdown of glucose (stored as glycogen in muscle, glucose in blood) to produce ATP
- 1 For the Lactic acid system, what is the:
- duration
30 seconds maximal effort
3-4 minutes with 70-80% effort
- 1 For the Lactic acid system, what is the:
- efficiency
Produces ATP quickly but requires large amount of glucose
Produces 2 ATP molecule for each glucose molecule
- 1 For the Lactic acid system, what is the:
- cause of fatigue
Build up of Pyruvic acid –> converts to lactic acid
Build up of H+ ions increase acidity of muscle- inhibits muscular contractions
- 1 For the Lactic acid system, what is the:
- by-products
Pyruvic acid –> ferments into lactic acid
- 1 For the Lactic acid system, what is the:
- process and rate of recovery
Liver reconverts lactic acid into glycogen to use again.
takes approx 30min to 1 hr
- 1 For the Aerobic system, what is the:
- source of fuel
Uses 3 different sources of fuel in this order (until the previous runs out)
- Carbohydrates
- Fat
- Protein
- 1 For the Aerobic system, what is the:
- efficiency
Most efficient system in producing ATP
38 ATP molecules per glucose molecule
Allows for sustained PA for very long periods of time
BUT Rate of production is medium - cannot cope with higher intensity levels
- 1 For the Aerobic system, what is the:
- duration
12 hours of rest
1 hour of hard work
6 works of intermittent exercise