Soc 18-Aerobic And Anaerobic Exercise And Energy Sources

Question 1

Glucose

Answer 1

A major source of energy for most cells in the body.

Question 2

Aerobic respiration

Answer 2

The process of releasing energy from glucose,using oxygen

Question 3

Aerobic exercise

Answer 3

Working at a moderate intensity…

Question 4

Fats

Answer 4

A rich source of energy,but many modern diets probide more than our body needs.

Question 5

Carbohydrates

Answer 5

The body’s main source of energy

Question 6

How are carbohydrates used?

Answer 6

• Your body’s cells uses carbohydrates more easily than fat
• Carbohydrates can only be stored in small amounts - enough to last a day or two - so
your body tends to use them first for energy
• When you eat carbohydrates, they are broken down into glucose or glycogen, which can
be absorbed through the walls of your small intestine and into the blood
• Glucose will pass into the blood, be transported to the liver and then circulated around the
body
• Once your cells have used as much glucose as they need, some of the excess is stored in
the liver, ready to be distributed if your blood glucose levels get too low.
• The rest can be turned into fat for long term storage

Question 7

How are fats used?

Answer 7

• Fats usually provide most of the body’s energy needs
• When you eat fat it is broken down into fatty acids, which are absorbed
into your blood and delivered to your cells
• Any fatty acids that are not needed straight away can be stored in fat cells
• Fats are found in butter, margarine and cooking oils, as well as in foods
such as bacon, cheese, fish and nuts
• Your daily intake of fats should be no more than 30% of your total diet

Question 8

Types of carbohydrates?

Answer 8

• Complex carbohydrates for example starch are found in natural foods
such as brown rice, wholemeal bread and wholemeal pasta
• Foods of this type help to provide slow releasing and long lasting energy for
exercise and should form about half of your daily intake
• Simple carbohydrates are stored in their natural form in fruit and
vegetables, and in their refined form in biscuits, cakes and chocolates.
• They provide a quick fix of of energy. For example, eating a banana at half
time of a football match.

Question 9

Carbohydrates and Fats in relation to exercise

Answer 9

• Energy comes from a range of different foods, including fats and
carbohydrates
• Carbohydrates are the main energy source for both high-intensity
(anaerobic) exercise and moderate-intensity (aerobic) exercise
• Fats can provide energy for only moderate-intensity (aerobic) exercise
for long periods over 2 hours