What is the typical range for inspiratory reserve volume in milliliters?

The typical range for inspiratory reserve volume (IRV) is indeed between 800 and 1,200 milliliters for most healthy adults. Inspiratory reserve volume refers to the maximum amount of air that can be inhaled after a normal tidal breath. This volume is crucial for understanding respiratory function, particularly in assessing lung capacity and the efficiency of ventilation.

Individual factors such as age, sex, body composition, and physical condition can influence these values, but the 800-1,200 milliliters range provides a reliable standard for typical respiratory assessments.

The other ranges presented do not align with the established physiological norms for inspiratory reserve volume based on current respiratory physiology knowledge. Values exceeding 1,200 milliliters may include other components of lung volumes or be reflective of atypical or specialized respiratory adaptations in elite athletes or individuals with greater lung capacity.