1Associate Professor, Dept of Physiology, Sridevi Institute of Medical Sciences & Research Hospital, Tumakuru
2Professor, Dept of Physiology, MVJ Medical College & Research Hospital, Bengaluru
Online published on 13 February, 2017.
The degree of adaptability of the respiratory system in delivering the physiological needs in case of severe exercise is a topic of considerable differences among workers in the field. Role of the normal respiratory system in delivering oxygen to meet the demands of various degrees of exercise has been a topic of considerable debate. One view holds that the respiratory system is not normally the most limiting factor in the delivery of oxygen, others hold the absence of structural adaptability to physical training cause of limitation of the pulmonary system. The role of ventilator functions in evaluating the respiratory functions in sprint runners has not been studied adequately in previous studies. Hence the need for this study.
Pulmonary Function Tests were done before & after maximal exercise testing to assess dynamic lung functions in two groups’ viz., athletes & non-athletes.
The athletes were sprinters.
On studying the differences in dynamic lung functions in two groups of non-athletes and athletes, there was no difference in FVC& FEV1, before or after exercise testing in either. The other flow rates MMEF, PEFR, MEF 25% to 75% were on the higher side in trained subjects which was consistently maintained after exercise testing. A higher adaptability of the respiratory system to the training stimulus in the form of a higher elastic recoil pressure of the lungs and a lower resistance of medium to small airways is suggested as the mechanism of adaptability in this study.
Exercise Testing, Airflow Limitation, Dynamic Lung Functions, Ventilatory functions, sprint runners
