ENERGY

Question 1

What is energy balance?

Answer 1

Take in the same amount of energy that comes out

Energy in - healthy eating
Energy out - being active

More energy in = obesity
More energy out = weight loss

Question 2

What is kJ (kilojoules) and kca (kilocalories) ?

Answer 2

They are measurements of energy per a 100g portion

1 kcal = 1 calorie
1 kcal = 4.184 kJ

Question 3

GDA of protein, carbs and fat

Answer 3

Carbs = 50% of total energy

Fat = 35% of total energy

Protein = 15% of total energy

Question 4

Energy content in 1g of carbs, protein and fat

Answer 4

Carbs - 4 kcal

Protein - 4 kcal

Fat - 9 kcal

Question 5

What is BMI

Answer 5

Body mass index

Weight to height calculation (weight in kg divided by m2)

Used to classify underweight/ overweight/obesity

Question 6

Factors that affect BMI

Answer 6

Age

Gender

Weight

Health

Level of activity

Question 7

What is BMR

Answer 7

Basil metabolic rate

Amount of energy required by an individual to maintain healthy organs, chemical reactions and body temperature

Rate at which energy is used at rest

Question 8

Factors that affect BMR

Answer 8

Metabolism

Body size

Thermogenic effect (stimulation of metabolic rate after meal)

Thyroid glands

Pregnancy

Lactation

(Same ones as BMI)