Inspiratory Reserve Volume

Inspiratory reserve volume (IRV) is the volume of air that a person can inhale after a normal breath. This is an important indicator of the health of the lungs and respiratory system as a whole.

Inspiratory reserve volume is of great importance for athletes and people who engage in physical exercise. It shows how well the lungs are able to fill with air and how much oxygen can be delivered to the blood.

In the normal state of the body, the inspiratory reserve volume is about 2-3 liters. However, in some people this level may be lower than normal, which can lead to decreased stamina and an increased risk of developing lung disease.

To increase the inspiratory reserve volume, it is necessary to engage in physical activity that helps strengthen the respiratory system. It is also important to monitor your health and consult a doctor promptly if symptoms of lung disease appear.



Expiratory reserve volume is the volume of air that can be exhaled after a quiet exhalation (or after a normal quiet inhalation).

Breathing reserve volume (unreplenished) – reserve of air remaining in the lungs after maximum exhalation

The supply of oxygen in the inhaled air is in practice ensured by its content in the blood. According to a special formula, the reserve blood volume (the volume of blood in the human body that is not involved in