AQA A-level PE Section C Questions and
Answers with Complete Solutions
How does the body adapt to long-term exercise in terms of cardiovascular function?
✔✔Long-term exercise leads to adaptations such as increased stroke volume, cardiac output, and
capillary density, improving overall cardiovascular efficiency.
What is the role of fast-twitch muscle fibers in exercise performance?
✔✔Fast-twitch fibers are used for explosive, high-intensity movements and generate quick
bursts of energy but fatigue quickly.
How do slow-twitch muscle fibers contribute to endurance activities?
✔✔Slow-twitch fibers are more efficient for endurance activities as they use oxygen to produce
energy over long periods without fatiguing quickly.
What is the principle of progressive overload in training?
✔✔Progressive overload involves gradually increasing the intensity, duration, or frequency of
exercise to stimulate adaptation and improve performance.
1
,How does the body use energy during short bursts of high-intensity exercise?
✔✔During high-intensity exercise, the body primarily uses the ATP-PC system to regenerate
ATP for immediate energy.
What is the significance of the aerobic energy system during prolonged exercise?
✔✔The aerobic energy system provides a steady supply of ATP by breaking down
carbohydrates and fats with the use of oxygen, making it ideal for long-duration activities.
How does the body recover after anaerobic exercise?
✔✔After anaerobic exercise, the body clears lactic acid, restores phosphocreatine stores, and
replenishes energy levels to prepare for future activity.
How does dehydration impact athletic performance?
✔✔Dehydration reduces blood volume, impairs thermoregulation, and decreases the ability to
deliver oxygen and nutrients to muscles, hindering performance.
What is the role of glycogen in the body during exercise?
✔✔Glycogen is stored in muscles and the liver and is broken down into glucose to provide a
primary energy source during exercise.
2
, What is the difference between aerobic and anaerobic respiration in terms of energy production?
✔✔Aerobic respiration uses oxygen to produce energy from carbohydrates and fats, while
anaerobic respiration does not use oxygen and results in the production of lactate.
How does the respiratory system support exercise?
✔✔The respiratory system increases the rate and depth of breathing to supply muscles with
oxygen and remove carbon dioxide during exercise.
What is the effect of training on lactate threshold?
✔✔Training increases lactate threshold, allowing athletes to exercise at higher intensities before
lactate accumulates and causes fatigue.
What is the importance of warming up before exercise?
✔✔Warming up increases blood flow to muscles, raises body temperature, and prepares the
body for more intense physical activity, reducing the risk of injury.
What is the role of the endocrine system during exercise?
3
Answers with Complete Solutions
How does the body adapt to long-term exercise in terms of cardiovascular function?
✔✔Long-term exercise leads to adaptations such as increased stroke volume, cardiac output, and
capillary density, improving overall cardiovascular efficiency.
What is the role of fast-twitch muscle fibers in exercise performance?
✔✔Fast-twitch fibers are used for explosive, high-intensity movements and generate quick
bursts of energy but fatigue quickly.
How do slow-twitch muscle fibers contribute to endurance activities?
✔✔Slow-twitch fibers are more efficient for endurance activities as they use oxygen to produce
energy over long periods without fatiguing quickly.
What is the principle of progressive overload in training?
✔✔Progressive overload involves gradually increasing the intensity, duration, or frequency of
exercise to stimulate adaptation and improve performance.
1
,How does the body use energy during short bursts of high-intensity exercise?
✔✔During high-intensity exercise, the body primarily uses the ATP-PC system to regenerate
ATP for immediate energy.
What is the significance of the aerobic energy system during prolonged exercise?
✔✔The aerobic energy system provides a steady supply of ATP by breaking down
carbohydrates and fats with the use of oxygen, making it ideal for long-duration activities.
How does the body recover after anaerobic exercise?
✔✔After anaerobic exercise, the body clears lactic acid, restores phosphocreatine stores, and
replenishes energy levels to prepare for future activity.
How does dehydration impact athletic performance?
✔✔Dehydration reduces blood volume, impairs thermoregulation, and decreases the ability to
deliver oxygen and nutrients to muscles, hindering performance.
What is the role of glycogen in the body during exercise?
✔✔Glycogen is stored in muscles and the liver and is broken down into glucose to provide a
primary energy source during exercise.
2
, What is the difference between aerobic and anaerobic respiration in terms of energy production?
✔✔Aerobic respiration uses oxygen to produce energy from carbohydrates and fats, while
anaerobic respiration does not use oxygen and results in the production of lactate.
How does the respiratory system support exercise?
✔✔The respiratory system increases the rate and depth of breathing to supply muscles with
oxygen and remove carbon dioxide during exercise.
What is the effect of training on lactate threshold?
✔✔Training increases lactate threshold, allowing athletes to exercise at higher intensities before
lactate accumulates and causes fatigue.
What is the importance of warming up before exercise?
✔✔Warming up increases blood flow to muscles, raises body temperature, and prepares the
body for more intense physical activity, reducing the risk of injury.
What is the role of the endocrine system during exercise?
3
