ABSTRACT
Exercise-Induced Bronchoconstriction (EIB) is a transient acute narrowing of the airway which occurs as a result of exercise. EIB is common in children. The prevalence of EIB has been estimated to be 20% in general individuals without a known diagnosis of asthma. Eighty percent of all asthma individuals experience exercise-related symptoms (ERS). The purpose of this study was to investigate the prevalence of EIB in medical students using an exercise challenge test. Aims And Objectives – To study the prevalence of prevalence of EIB in medical student and to investigate the relationship between EIB and the history of asthma, history of ERS, allergy including rhinitis, atopic dermatitis, hay fever, allergies to food and animals. Methods: This study was done on medical student of NMCH, Jamuhar between January 2019 and March 2019. Medical students underwent exercise challenge test on bicycle -ergometry. Spirometry was performed a few minutes before and immediately after performance of the exercise. The criterion for a positive test was a greater than 10% decrease in FEV1 from the baseline measurement. Results: Total 188 students completed the study, out of which 24 came to be EIB positive. 17 had history of asthma of which 15 came to be EIB positive. 13 had history of ERS of which 11 came to be EIB positive. Conclusion: In our study prevalence of EIB came to be 12.7%. EIB in student having history of asthma came to be 88.2%. EIB in student having history of ERS came to be 84.6%.