What's covered
Diet and performance24
Sample questions
A taste of the 24 questions in this topic — answers marked. Sign up to practise the full set with spaced repetition.
1Diet and performance
What is the main role of carbohydrates in sport?
- ✓To provide energy for exercise
- •To regulate body temperature
- •To repair and build muscle tissue
- •To store fat-soluble vitamins
2Diet and performance
Why might an athlete eat a carbohydrate-rich meal 2–3 hours before a race?
- •To increase protein available for muscle repair
- •To prevent the heart rate rising too quickly
- •To reduce lactic acid build-up in the muscles
- ✓To top up glycogen stores for energy during the race
3Diet and performance
Why is hydration important in sport?
- ✓Even mild dehydration reduces concentration, endurance and strength
- •It increases the number of red blood cells in the bloodstream
- •It makes muscles grow faster after a heavy training session
- •It reduces body fat percentage when combined with regular exercise
4Diet and performance
What is a calorie?
- •A measure of how much protein is in food
- •A type of carbohydrate found in bread
- ✓A unit used to measure the energy provided by food
- •The amount of fat stored in the body
5Diet and performance
What is energy balance?
- ✓When calories eaten equals calories used by the body
- •When fluid intake equals fluid lost through sweat
- •When protein intake equals carbohydrate intake
- •When training load equals rest time
6Diet and performance
What happens if an athlete consistently takes in more calories than they use?
- •Muscle mass increases automatically
- •Performance improves because the body has more fuel
- •The body excretes the extra calories as waste
- ✓The excess energy is stored as fat, causing weight gain
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