Aerobic And Anaerobic Exercise

Question 1

Aerobic respiration

Answer 1

• in aerobic respiration, oxygen combines with glucose to produce energy in the mitochondria of the cells.
Glucose + oxygen —> carbon dioxide + water
Aerobic respiration is ideal for endurance events because it has a moderate intensity that can be sustained over a period of time

Question 2

Anaerobic respiration

Answer 2

• in anaerobic respiration, glucose is converted directly into energy
Glucose—> lactic acid
• however, this can only be sustained for a short period of time because of the build-up of toxic lactic acid and a limited supply of glucose

Question 3

Recovering after exercise- oxygen debt

Answer 3

• oxygen debt is the temporary shortage of oxygen in the body because of tiring activity
• during anaerobic exercise, the body produces energy without using oxygen This means that lactic acid is created as a waste product

Question 4

Recovery after exercise- excess post-exercise oxygen consumption

Answer 4

•when the anaerobic activity stops, the performer will continue to breathe heavily. This is because the body will have to take in additional oxygen to “repay” the oxygen debt.
• this helps to remove the build up of lactic acid at working muscles

Question 5

Cool down- walking or jogging

Answer 5

• walking or jogging should be carried out for 5-10 minutes to cool body temperature and remove waste products from the muscles

Question 6

Cool down- static stretching

Answer 6

• static stretching should be done for 5-10 minutes to help the muscles relax post exercise.

Question 7

Cool down- effects of a cool down

Answer 7

•remove waste products
• reduce the effects of Doms
• prevent blood pooling
• slowly reduce resting heart rate

Question 8

Cool down - advantages

Answer 8

• easy to do
• can be done immediately after exercise, so it can become a routine
• doesn’t cost anything

Question 9

Cool down- disadvantages

Answer 9

• following strenuous activity, a performer doesn’t always feel motivated to cool down.
• can be time-consuming

Question 10

Treatment for recovery- rehydration

Answer 10

• rehydration is when a performer replaces the fluids that have been lost during exercise

Question 11

Treatments for recovery- carbohydrate replacement

Answer 11

• during exercise, the body uses glucose to make energy. Glucose is a form of carbohydrates and will need replacing
• a performer can replace used carbohydrates by eating a carbohydrate rich meal

Question 12

Treatments for recovery- ice baths

Answer 12

• putting the body into an ice bath will cause the blood vessels to constrict and flush out waste products. This helps reduce swelling
• when the performer steps out of the bath, their muscles return to a warmer temperature and the blood temperature and the blood flowing through them is now cleaner. This delivers oxygen and nutrients to the muscles to help repair them

Question 13

Treatments for recovery- massage

Answer 13

• rubbing and kneading a performers muscles can relax the muscles and cause blood to flow
• this blood flow can help remove waste products, speed up recovery and prevent DOMS
• but massages can be expensive and some people may not have the knowledge to perform a massage