PE2 - Nutrition For Performance And Health

Question 1

Define metabolism.

Answer 1

The way in which energy is used and the rate of energy usage by the human body.

Question 2

Carbohydrate function.

Answer 2

Main energy supply.

Absorbed as glucose in small intestine.
Transported around body as blood glucose.
Available for immediate energy.
Excess stored as muscle&liver glycogen and as fat

Question 3

Fats function.

Answer 3

Secondary energy supply.

Absorbed as fatty acids and glycerol in the small intestine.
Converted to glucose in the liver.
Available as delayed (20 mins) energy source for long duration, low intensity aerobic exercise.

Question 4

Proteins function.

Answer 4

Absorbed as amino acids in the small intestine.
Used for growth and repair in the muscles.
Used as an energy source when the body is depleted of CHO and fat.

Question 5

What is a balanced diet?

Answer 5

The combination and proportions of carbohydrates, fats, proteins, roughage, water and essential minerals and vitamins which best provide for a sportsperson’s nutritional requirements.