Background: Pulmonary function testing has become an integral part of investigations in respiratory medicine. Peak Expiratory Flow (Pef) is the highest flow achieved from maximum forced exhalation from a position of maximum inhalation.

Methods

The study was performed on normal healthy male volunteers of different age groups. Data was collected by randomly selecting in total 100 healthy non–smoking individuals

Results The mean PEFR values in our study population changed significantly with the variation in age on different age groups. There is a progressive decline in the mean PEFR with the increase in the age.

Conclusion The spirometric values were higher in the younger age groups as compared to the older age groups. There was a progressive decline in the pulmonary functions with aging.