Energy Systems

Question 0

Fuel Sources

Answer 0

Carbohydrates: glycogen = ATP, easily broken down
Fats: sub-maximal energy demands and when resting
Protein: limited, only in cases of extreme malnutrition

Question 1

Energy system roles

Answer 1

To produce ATP and thus energy

Question 2

ATP-PC duration and intensity

Answer 2

Duration: 7-10 seconds
Intensity: used for high powered events

Question 3

Lactic System duration and intensity

Answer 3

Duration: 10 sec - 1 min
Intensity: high intensity activities

Question 4

Aerobic system duration and intensity

Answer 4

Duration: >1 min
Intensity: low levels of exercise intensity, moderate - high levels

Question 5

Energy system by-products, lactic acid

Answer 5

Due to lack of oxygen, body cannot get rid of hydrogen carrying molecules
Glycolysis (breakdown of carbs) causes hydrogen ions (cause acidity) and pyruvic acid to be produced
To avoid build up of H+ ions pyruvic acid accepts the hydrogen which creates lactic acid which causes fatigue

Removal takes up to an hour

Question 6

Restoration of systems

Answer 6

ATP-PC: 3 minutes
Lactic Acid: active = 1 hour, rest = 2 hours
Aerobic System: can take anywhere from a few hours to a few days, depends on work load