Metabolism, Energy Expenditure and Body Composition - 6%

Question 1

What is Metabolism?

Answer 1

The chemical processes occurring within a living cell or organism that are necessary for the maintenance of life

Question 2

What three things make up your Total Daily Energy Expenditure?

Answer 2

Resting metabolic rate (basal, sleeping and arousal
metabolism)

Thermogenic effect of food consumed

Energy expended during physical activity and recovery

Question 3

What is basal metabolic rate?

Answer 3

The minimum level of energy required to support the body’s vital functions

Question 4

What is Resting metabolic rate?

Answer 4

The calories the body uses to maintain vital body functions (heart rate, brain function, and breathing)

Question 5

What are the 4 mechanisms of heat transfer?

Answer 5

Radiation - infra red waves (thermal energy) at rest ~ 50-60% body heat loss.

Conduction - heat transfer between objects that are in direct contact.

Convection – vertical heat movement in fluids. This due to density changes a the fluid.

Evaporation - heat absorbed from the body causes water molecules to change from a liquid to a gas.