Lung Capacity (lesson seven)

Question 1

what are the factors that affect lung capacity?

Answer 1

• Physical Activity
• Depth of breath
• Sex
• Body Type
• Lifestyle

Question 1

what is lung capacity?

Answer 1

• The volume of air in the lungs can vary depending on the circumstances.

Question 2

Total lung capacity (TLC)

Answer 2

the maximum volume of air that can be taken into the lungs during a single breath

Question 3

other ways TLC can be considered

Answer 3

Inspiratory reserve Volume + Tidal Volume + Expiratory reserve volume + Residual volume
or
Vital Capacity + Residual Volume

Question 4

Tidal Volume

Answer 4

the volume (inhaled or exhaled) during normal breathing
- This is approximately 0.5L in the average adult

Question 5

inspiratory reserve volume

Answer 5

the amount of additional air that can be inhaled after a normal inhalation

Question 6

expiratory reserve volume

Answer 6

the amount of additional air that can be exhaled after a normal exhalation

Question 7

residual volume

Answer 7

volume of air that stays in the lungs that prevents the lungs from collapsing

Question 8

Vital Capacity

Answer 8

the maximum amount of air that can physically be inhaled or exhaled
- During periods of high oxygen demand, the reserve volumes (IRV, ERV) decrease and the tidal volumes increase; this is called vital capacity
- usually 3.4-3.8L for women and 4.4-4.8 L for men

Question 9

what is VO2?

Answer 9

the rate at which oxygen is used in the body is called your VO2

Question 10

what is VO2max?

Answer 10

The maximum rate at which your body can use oxygen during sustained intense physical activity is called VO2max

Question 11

what is the unit that VO2 and VO2max measured in?

Answer 11

VO2 and VO2max are both measured in millilitres of oxygen per kilogram of body mass per minute (mL/kg/min).