eneergy system interplay Flashcards
(18 cards)
Which energy system dominates at rest?
The aerobic system.
What fuels are used at rest, and in what ratio?
Fats (2/3) and carbohydrates (1/3).
Do energy systems work one at a time during exercise?
No, all three systems work together, but the dominant system depends on intensity and duration.
What is the dominant system during very short, high-intensity activity?
ATP–CP system.
What happens as CP stores deplete?
Anaerobic glycolysis takes over, then aerobic if effort continues.
What system dominates early in a 400m sprint?
ATP–CP system.
What happens mid-race as CP is depleted?
Anaerobic glycolysis becomes the main contributor
What system contributes by the end?
Aerobic system supports as intensity drops.
What causes oxygen deficit at the start of exercise?
A: Oxygen supply doesn’t immediately meet increased demand
Which systems fill the gap during oxygen deficit?
Anaerobic systems (ATP–CP and anaerobic glycolysis)
What is “steady state”?
A: When oxygen supply = oxygen demand, and aerobic system dominates
Which system fuels short sprints in team sports?
A: ATP–CP system.
Q: What happens after repeated sprints?
A: CP depletion → increased reliance on anaerobic glycolysis.
Q: What fuels low-intensity periods between play?
A: Aerobic system aids recovery and CP resynthesis.
ATP-CP SYSTEM DEFINE
uses creatine phosphate to make energy quickly for short, high-intensity efforts 0-10 seconds
Anaerobic glycolysis system
Breaks down glucose without oxygen for fast energy (10–60 seconds), but produces fatigue-causing by-products.
Aerobic system
Uses oxygen to break down carbs, fats (and sometimes protein) for long-lasting energy (1 minute+), but works slowly.
ATP- adenosine triphosphate
is the main source of energy used by your body’s cells.
It stores energy in its bonds, and when one bond breaks, it releases energy to power things like muscle contractions.
