Pdh: Energy System Flashcards
(15 cards)
What is the Alactacid system?
The Alactacid system (ATP-PC) operates without oxygen and is used for activities like sprinting and high jump.
What is the efficiency of ATP production in the Alactacid system?
Creatine phosphate is available to the cells, allowing rapid ATP production, but the ATP supply is limited if demand is high.
How long can the Alactacid system operate?
The Alactacid system can make ATP available for approximately 2 seconds, as it is stored in muscle.
What causes fatigue in the Alactacid system?
At maximum effort, fatigue is caused by the inability of the system to continually resynthesize ADP from creatine phosphate.
What are the byproducts of energy production in the Alactacid system?
There are no fatigue byproducts; only heat is produced.
What is the source of fuel for the Lactic acid system?
The Lactic acid system uses glucose in the blood and stored glycogen.
How long can the Lactic acid system operate?
The duration depends on the intensity of activity; it produces energy for high-intensity activities lasting 10-90 seconds.
What are the byproducts of energy production in the Lactic acid system?
The byproduct is lactic acid.
What is the process and rate of recovery for the Alactacid system?
Recovery is fast; within 2 minutes, most ATP and creatine phosphate supplies are restored.
What is the efficiency of ATP production in the Lactic acid system?
It provides ATP quickly but requires large quantities of ATP at a considerable cost.
What causes fatigue in the Lactic acid system?
Fatigue occurs when lactic acid levels build up within muscle cells.
What is the source of fuel for the Aerobic system?
The Aerobic system uses carbohydrates, fat, and protein.
How long can the Aerobic system operate?
Glycogen stores can be depleted in about 4-6 hours of moderate exercise; low intensity can last up to 12 hours.
What are the byproducts of energy production in the Aerobic system?
The byproducts are carbon dioxide and water, which are not harmful for performance.
What is the process and rate of recovery for the Aerobic system?
Recovery depends on duration; for short times, the system will recover quickly, while longer durations may take days to fully replenish glycogen stores.
