Effects Of Different Exercise Intensities And Recovery On f TV And VE (graphs)

Question 1

Describe the graph of breathing frequency as exercise intensity increases

Answer 1

1. F increases linearly with exercise intensity
2. F plateaus as exercise intensity continues toward maximal intensity
3. F plateaus during sustained sub-maximal intensity

Question 2

Why does f increase with exercise intensity (2 things)

Answer 2

1. Increased demand of O2 from muscles

2. Respiratory system must get a greater volume of O2 into the lungs

Question 3

Why does f plateau with exercise intensity

Answer 3

There is a minimum time for inspiration to ensure enough O2 enters the lungs

Question 4

Why does f plateau during sustained sub-maximal intensity

Answer 4

Because the supply for O2 meats the demand for O2 and so the muscles get enough O2

Question 5

Describe the TV graph of exercise intensity

Answer 5

1. TV increases linearly with exercise intensity

2. TV plateaus as exercise intensity continues to rise

Question 6

Why does TV increases with exercise intensity (2 things)

Answer 6

1. O2 demand at muscles increases

2. Respiratory system must get a greater volume of O2 into the lungs

Question 7

Why does TV plateau as exercise intensity continues to rise

Answer 7

Increased f means there is not enough time during inspiration or expiration for a greater volume of air to be breathed in or out

Question 8

What happens to f and TV during recovery

Answer 8

TV and f return slowly to their pre-exercise values

Question 9

Explain the five steps of an aerobic respiration graph on VE

Answer 9

1. Anticipatory rise due to adrenaline
2. Fast increase due to increase in demand of O2 at muscles
3. Plateau as supply of O2 meats demand of O2 from muscles
4. Fast decrease due to decrease in demand of O2 from muscles
5. Slower decrease to keep O2 levels higher to remove lactic acid

Question 10

Describe the five stages of an anaerobic respiration graph on exercise intensity

Answer 10

1. Anticipatory rise due to adrenaline
2. Fast increase due in increase in demand of O2 from muscles
3. Slower increase as O2 supply never meets O2 demand from muscles
4. Fast decrease due to reduction in demand of O2 from muscles
5. Slower decrease than with aerobic respiration as needs to keep O2 levels elevated to remove more lactic acid

Question 11

Describe the graph of exercise intensities on VE

Answer 11

1. VE increases linearly with exercise intensity

2. VE plateaus as exercise intensity increases towards maximal intensity

Question 12

Why does VE increase with exercise intensity (2 things)

Answer 12

1. F and TV are increasing

2. VE is f x TV

Question 13

Why does VE plateau during sustained sub-maximal intensity

Answer 13

TV and f plateau

Question 14

Name average values for f,TV and VE for a untrained athlete at rest

Answer 14

1. F is 12 breaths per minute
2. TV is 0.5l
3. VE is 6l/m

Question 15

Name average values for f, TV and VE for an untrained athlete during maximal intensity exercise

Answer 15

1. F is 50 breaths per minute
2. TV is 2.5l
3. VE is 125l/m

Question 16

Name average values for f, TV and VE for a trained athlete at rest

Answer 16

1. F is 10 breaths per minute
2. TV is 0.5l
   £. VE is 5l/m

Question 17

Name average values for f, TV and VE for a trained athlete during maximal intensity exercise

Answer 17

1. F is 60 breaths per minute
2. TV is 3l
3. VE is 180l/m