Further detail about this can be seen here. In this manner, why does height affect lung capacity?
Height (taller people tend to have larger chests and hence larger total lung capacities) Location (people living at high altitudes tend to have larger capacities to compensate for the lower atmospheric pressure) Lifestyle (obese people and smokers tend to have lower capacities and higher rates of ventilation)
Subsequently, question is, what does a high vital capacity indicate? Vital capacity (VC) is the maximum amount of air a person can expel from the lungs after a maximum inhalation. Furthermore, the vital capacity is used to determine the severity of respiratory muscle involvement in neuromuscular disease, and can guide treatment decisions in Guillain–Barré syndrome and myasthenic crisis.
Consequently, why does vital capacity change with height?
a. If someone is taller than they have larger lungs and a larger capacity volume. The tidal volume would increase but all of the reserve volumes would decrease due to exercise.
What causes low vital capacity?
In cases of obstructive lung diseases, such as asthma, bronchiectasis, COPD, and emphysema, the lungs are unable to expel air properly during exhalation. Restrictive lung diseases cause a decreased lung capacity or volume, so a person's breathing rate often increases to meet their oxygen demands.
