Energy supply and effects of exercise on body

Question 1

Aerobic and anaerobic respiration

Question 2

What is the process involving concerting food to energy

Answer 2

Body breaks down carbs into glucose

Some glucose is stored in muscles as glycogen, the rest is carried away to cells in the organs of the bodies

Question 3

Aerobic respiration equation

Answer 3

glucose + oxygen -> Water + Carbon dioxide

Question 4

Anaerobic respiration formula

Answer 4

Glucose -> Lactic acid

Question 5

How is aerobic respiration used in physical activity

Answer 5

When doing actives with low intensity such as walking and jogging, aerobic respiration is used

Question 6

How is anaerobic respiration used in physical activity

Answer 6

During high levels of intensity
Muscles require energy quickly
Glucose converted into energy but in smaller amounts compared to aerobic respiration

Question 7

example of aerobic energy demands for running or jogging

Answer 7

Jogging or running long distance,

Keeping the same place for most of the time whilst doing exercise which requires less power so aerobic energy is used

Question 8

example of anaerobic energy demand in sprinting

Answer 8

In sprinting you will require much more power and for a shorter period of time therefore anaerobic respiration is used

Question 9

Recovery

Question 10

Why does the body need more oxygen after intense exercise

Answer 10

Because lactic acid in cells is required to be removed and bring the body back to resting rate

Question 11

What is oxygen debt

Answer 11

Oxygen debt is the amount of oxygen needed to bring the body back to resting rate

Question 12

How is EPOC caused

Answer 12

Caused by anaerobic exercise, produces lactic acid and requiring high breathing rate to remove lactic acid

Question 13

How does overall strength and fitness affect recovery time

Answer 13

Stronger muscles mean they will be quicker at absorbing oxygen needed to remove lactic acid

Question 14

How does genetics affect recovery time

Answer 14

Some inherit from parents the ability to recover quicker from hard intense exercise compared to some who may feel more exhausted

Question 15

How does age affect recovery time

Answer 15

As you grow older, Generally longer recovery time is needed

Question 16

How does gender affect recovery time

Answer 16

Physically fit woman and greater resistance to fatigue than male, especially at low to moderate intensities

Question 17

How does sleep affect recovery time

Answer 17

Good sleep helps body recover quickly

Bad sleep interrupts the recovery

Question 18

Short term affects of exercise

Question 19

What are the immediate effects on the body

Answer 19

Increased heart rate because more oxygen needs to be sent through blood to the muscles to turn glucose to energy
Breathing increased because more oxygen is required and for that to happen more breathes are needed`

Question 20

What happens to the body during exercise

Answer 20

Reddening of the skin
Sweating
Fatigue
Nausea
Light headedness

Question 21

How does fatigue affect performance

Answer 21

When the muscle fibres work for too long at maximum level which leads to the body not performing at the highest level

Question 22

How does nausea affect performance

Answer 22

Nausea results to blood flow being diverted away from the stomach, Which leads to slow digestion
Dehydration also can give you the feeling of nausea
Over hydration can also affect because excess water dilutes electrolytes to stop them from working

Question 23

Long term effects on exercise

Question 24

What happens to the heart after training for a long period of time

Answer 24

Muscle walls of the heart become thicker and stronger increasing size of heart
Resting pulse rate decreases
Ability to tolerate lactic acid quicker
Increase in stroke volume because more blood needs to be pumped out the heart