Background: Respiratory endurance focuses on increasing respiratory muscle resistance with the use of regular endurance training exercise and to prevent respiratory disabilities leading to respiratory failure.Aim: to study the effect of respiratory endurance training exercise on lung volumes and lung capacities in young healthy human adults. Methods: Research was conducted on 60 health young adults including randomly selected 31 males and 29 female students of Osmania medical college of Hyderabad (India), studying in final year of graduate program. They were made to exercise 30 minutes thrice a week for 3 times a day for 16 weeks. Research was conducted at post graduate physiology research lab during January- March 2005. Results: Lung Capacities were compared pre test and after a completion of 16 weeks of respiratory endurance training in young health subjects of age group 18-30 yrs. Mean weight was 59 kg and mean height was 160 cm, while the mean body surface area was 1.59 m2. Pulmonary__ampersandsignnbsp; function tests were conducted and determined on these subjects by using Medspirer. First phase of recordings were done before starting of the exercise training and second phase recordings were done at the end of 16 weeks. The following parameters were recorded: Forced Vital Capacity, Forced expiratory volume at 1 second, Maximum Voluntary volume, Inspiratory reserve volume, Vital Capacity and Endurance Test Time). All the parameters have shown significant increase in the second phase when compared to the first phase. Our study has shown that the Pulmonary Function Tests values are higher after exercise training. Conclusion: Mechanical efficiency leads to increase in skeletal muscle strength which finally increases respiratory airflow meaning increase in all pulmonary function tests.