EFFECT OF AEROBIC EXCERSICE AND OTHER VARIABLES ON BRONCHIAL HYPER REACTIVITY IN APPRANTLY HEALTHY YOUNG ADOLESCENTS OF CENTRAL INDIA

PRACHI ARYA; MILIND SHIRALKAR

Volume : VI, Issue : XI, November - 2016

EFFECT OF AEROBIC EXCERSICE AND OTHER VARIABLES ON BRONCHIAL HYPER REACTIVITY IN APPRANTLY HEALTHY YOUNG ADOLESCENTS OF CENTRAL INDIA

Prachi Arya, Milind Shiralkar

Abstract :

T Exercise inducible onchial hyperactivity (EIBHR) is a reversible airway narrowing to wide variety of stimuli like physical exertion and characterized by repeated episodes of dyspnoea, wheezing, chest tightness, cough and phlegm. EIBHR can occur in healthy people who do not have chronic asthma. Exercise is the only stimulus for their asthma symptoms which most likely reflects a different pathophysiologic event than chronic asthma. A prospective observational study conducted in the Department of Physiology, G.R. Medical College, Gwalior. Apparently healthy teenage medical students aged 17–19 yrs were studied to assess lung function parameters and prevalence of unrecognised EIBHR. General information obtained from all the subjects with special reference to factors affecting lung functions such as history of parental smoking, family history of asthma/atopy and personal history of smoking and atopy. PEFR and baseline lung functions were evaluated as per standard technique thereafter adolescent were instructed to undertake aerobic exercise on cycle ergometer for 6–8 minutes. Exercise intensity was kept at a level so as to achieve 70–80% of maximum HR (220 age in years). PEFR and spirometry was recorded at 5 minute interval for next 30 minutes. 15% or more fall in PEFR from baseline was defined as exercise induced onchial hyper reactivity (EIBHR). An overall prevalence of 14% exercise induced onchial hyperreactivity (EIBHR) was found in this study. This increased prevalence of EIBHR was found in urban dwellers and male sex. Family history of atopy was found to have significant negative correlation with baseline vital capacity, PEFR and FEV1. BMI had positive correlation with PEFR only particularly in male sex. Other family and personal variables did not have significant difference on lung function parameter. Body surface area corrected baseline lung function parameters was statistically highly significant in both sex in without EIBHR (p=0.008, p.001 and =0.0001 for PEFR, FEV and FEV1 respectively) but was not statistically significant in both sex with EIBHR.