Explain how carbohydrate loading can improve performance for a marathon runner. (4 marks)
--- 8 WORK AREA LINES (style=lined) ---
Show Answers Only
Sample Answer
- Maximises muscle glycogen stores before competition through gradual increase in carbohydrate intake over 3-4 days
- Provides sustained energy release during prolonged exercise by ensuring adequate fuel stores in working muscles
- Delays onset of fatigue in later stages of race by maintaining blood glucose levels when glycogen stores deplete
- Maintains blood glucose levels for optimal brain function which helps preserve technique and decision-making ability
Show Worked Solution
Sample Answer
- Maximises muscle glycogen stores before competition through gradual increase in carbohydrate intake over 3-4 days
- Provides sustained energy release during prolonged exercise by ensuring adequate fuel stores in working muscles
- Delays onset of fatigue in later stages of race by maintaining blood glucose levels when glycogen stores deplete
- Maintains blood glucose levels for optimal brain function which helps preserve technique and decision-making ability