Explain how carbohydrates as a macronutrient support efficient movement during both aerobic and anaerobic activities. (4 marks)
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Sample Answer
Role of carbohydrates:
- Support efficient movement by providing glucose as the primary energy source for both aerobic and anaerobic activities.
During aerobic activities:
- Carbohydrates are broken down through the digestive system
- Stored as glycogen in muscles and the liver, providing a steady energy supply.
- Example long distance running.
For anaerobic activities:
- Muscle glycogen is rapidly converted to ATP through the glycolytic system, enabling explosive movements.
- Example sprinting.
Without adequate carbohydrate stores:
- Both types of activities would be compromised due to early onset fatigue and reduced power output.
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Sample Answer
Role of carbohydrates:
- Support efficient movement by providing glucose as the primary energy source for both aerobic and anaerobic activities.
During aerobic activities:
- Carbohydrates are broken down through the digestive system
- Stored as glycogen in muscles and the liver, providing a steady energy supply.
- Example long distance running.
For anaerobic activities:
- Muscle glycogen is rapidly converted to ATP through the glycolytic system, enabling explosive movements.
- Example sprinting.
Without adequate carbohydrate stores:
- Both types of activities would be compromised due to early onset fatigue and reduced power output.