A.2.3 Energy systems
Flashcards for A.2.3 Energy systems - IB
These interactive flashcards help IB Sports, exercise and health science (SEHS - Old) students Standard Level (SL) and Higher Level (HL) quickly review and memorize the essential definitions, formulas, and terms needed for success in IB Exams. Each card focuses on A.2.3 Energy systems and is aligned with the IB Sports, exercise and health science (SEHS - Old) syllabus, ensuring focused revision on core principles, advanced applications, and practical problem-solving. Students can test themselves anytime, anywhere, perfect for reinforcing tricky concepts, learning IB terminology, and committing formulas to memory. By using RevisionDojo's flashcards consistently, learners turn repetition into mastery and enter the exam with confidence.
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What are the three energy systems in the human body?
ATP-PC System, Lactic Acid System, Aerobic System.
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What are the three energy systems in the human body?
ATP-PC System, Lactic Acid System, Aerobic System.
What is the duration of the ATP-PC system?
0-10 seconds.
What type of activities primarily use the ATP-PC system?
Sprinting, jumping, weightlifting.
Does the ATP-PC system require oxygen?
No, it does not require oxygen.
What is a key by-product of the Lactic Acid System?
Lactic acid.
What is the duration of the Lactic Acid System?
10 seconds to 2-3 minutes.
What activities primarily utilize the Lactic Acid System?
400m running, swimming sprints.
What is the duration of the Aerobic System?
Beyond 2-3 minutes.
What type of activities primarily use the Aerobic System?
Marathon running, long-distance cycling.
What by-products are produced by the Aerobic System?
Water and CO2.
What is the primary fuel source for the Aerobic System?
Carbohydrates, fats, and in extreme cases, proteins.
What percentage of energy does the ATP-PC system contribute in a 100m sprint?
90%.
What percentage of energy does the Aerobic System contribute in a marathon?
95%.
What is the structure of ATP?
ATP = Adenosine Triphosphate.
What is the equation for ATP breakdown?
.
How much energy is released when one ATP molecule is broken down?
Approximately 7.3 kcal/mol.
What is a recommended training method for the ATP-PC system?
Short, maximal effort intervals (5-10 seconds) with long rest periods (2-5 minutes).
What is a recommended training method for the Lactic Acid System?
Medium duration, high-intensity intervals (30-90 seconds) with shorter rest periods (1-3 minutes).
What is a recommended training method for the Aerobic System?
Long duration, lower intensity work, such as a 60-minute steady-state run.
Why is it important for athletes to train according to their sport's primary energy system?
To optimize performance.
What common mistake do people make regarding lactic acid?
Blaming lactic acid for muscle soreness, which is more related to microscopic muscle damage.
What is the significance of the energy systems timeline?
It shows the relative contribution of each energy system over time during exercise.