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Prevalence of bronchoconstriction induced by eucapnic voluntary hyperpnoea in recreationally active individuals.

Molphy, J., Dickinson, John W., Hu, J., Chester, N., Whyte, G. (2014) Prevalence of bronchoconstriction induced by eucapnic voluntary hyperpnoea in recreationally active individuals. The Journal of Asthma : official journal of the Association for the Care of Asthma, 51 (1). pp. 44-50. ISSN 1532-4303. (doi:10.3109/02770903.2013.838256) (The full text of this publication is not currently available from this repository. You may be able to access a copy if URLs are provided) (KAR id:43899)

The full text of this publication is not currently available from this repository. You may be able to access a copy if URLs are provided. (Contact us about this Publication)
Official URL
http://dx.doi.org/10.3109/02770903.2013.838256

Abstract

OBJECTIVE

Exercise-induced bronchoconstriction (EIB) is more prevalent in elite athletes than in the general population. Many of these athletes provide a positive eucapnic voluntary hyperpnoea (EVH) challenge without previous diagnosis of EIB. It is unknown whether this is specific to elite athletes or whether the same risk applies to recreationally active individuals. The purpose of this study was to investigate the prevalence of a positive EVH challenge in a population of recreationally active individuals.

METHODS

136 recreationally active individuals (Age: 21.9?±?3.7 years; Height: 175?±?9?cm; Weight: 70.9?±?10.0?kg) without previous history of asthma or EIB, volunteered to take part in the study. All participants completed an EVH challenge, which was deemed positive if FEV1 fell ?10% from baseline at two consecutive time points, and was reversible following inhalation of a short acting ?2-agonist.

RESULTS

18 of 136 (13.2%) participants had a positive EVH challenge. Of the 18 individuals, the fall in FEV1 from baseline ranged from -12% to -50%. At baseline, percentage predicted FEV1 (97.5?±?12.5% versus 104.9?±?10%; p?<?0.01), FEV1/FVC ratio (79.5?±?6.9% versus 87.8?±?5.5%; p?<?0.01), FEF25-75 (3.73?±?1.00 versus 4.73?±?1.00?l/s; p?<?0.01) and predicted PEF (89.4?±?8.8% versus 97.5?±?13.6%; p?<?0.05) values for EVH positive participants were significantly lower than EVH negative participants respectively.

CONCLUSIONS

Overall, 13.2% of recreationally active individuals with no previous history of asthma presented with a positive EVH challenge. Individuals who are recreationally active may benefit from an objective bronchial provocation challenge, given that self-reported symptoms alone only provide a supportive role towards a valid EIB diagnosis.

Item Type: Article
DOI/Identification number: 10.3109/02770903.2013.838256
Uncontrolled keywords: Asthma; Bronchoprovocation; Exercise-induced; Objective; Symptoms
Subjects: R Medicine > RC Internal medicine > RC1200 Sports medicine
Divisions: Divisions > Division of Natural Sciences > School of Sport and Exercise Sciences
Depositing User: John Dickinson
Date Deposited: 27 Nov 2014 12:44 UTC
Last Modified: 16 Feb 2021 12:56 UTC
Resource URI: https://kar.kent.ac.uk/id/eprint/43899 (The current URI for this page, for reference purposes)
Dickinson, John W.: https://orcid.org/0000-0002-1824-7402
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