Effects of ageing on the respiratory system Copy TEST COURSE Jan 2023

Effects of ageing on the respiratory system

The effects of ageing on the respiratory system are similar to those that occur in other organs: maximum function gradually declines. Age-related changes in the lungs include

Decreases in peak airflow and gas exchange
Decreases in measures of lung function such as vital capacity (the maximum amount of air that can be breathed out following a maximum inhalation)
Weakening of the respiratory muscles
Decline in the effectiveness of lung defence mechanisms

In healthy people, these age-related changes seldom lead to symptoms. These changes contribute somewhat to an older person’s reduced ability to do vigorous exercise, especially intense aerobic exercise, such as running, biking, and mountain climbing. However, age-related decreases in heart function may be a more important cause of such limitations. (3)

Figure 2.34: Ageing

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