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High prevalence of exercise-induced laryngeal obstruction in athletes.
Med Sci Sports Exerc. 2013 Nov; 45(11):2030-5.MS

Abstract

INTRODUCTION

Unexplained respiratory symptoms reported by athletes are often incorrectly considered secondary to exercise-induced asthma. We hypothesized that this may be related to exercise-induced laryngeal obstruction (EILO). This study evaluates the prevalence of EILO in an unselected cohort of athletes.

METHODS

We retrospectively reviewed the prevalence of EILO in a cohort of athletes (n = 91) referred consecutively during a 2-yr period for asthma workup including continuous laryngoscopy during exercise (CLE) testing. We compared clinical characteristics and bronchial hyperreactivity between athletes with and without EILO.

RESULTS

Of 88 athletes who completed a full workup, 31 (35.2%) had EILO and 38 (43.2%) had a positive bronchoprovocation or bronchodilator reversibility test. The presence of inspiratory symptoms did not differentiate athletes with and without EILO. Sixty-one percent of athletes with EILO and negative bronchoprovocation and bronchodilator reversibility tests used regular asthma medication at referral.

CONCLUSIONS

In athletes with unexplained respiratory symptoms, EILO is an important differential diagnosis not discerned from other etiologies by clinical features. These findings have important implications for the assessment and management of athletes presenting with persistent respiratory symptoms despite asthma therapy.

Authors+Show Affiliations

1Respiratory Research Unit, Department of Respiratory Medicine, Copenhagen University Hospital Bispebjerg, Copenhagen, DENMARK; and 2Department of Respiratory Medicine, Royal Brompton Hospital, London, England, UNITED KINGDOM.No affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article

Language

eng

PubMed ID

23657163

Citation

Nielsen, Emil Walsted, et al. "High Prevalence of Exercise-induced Laryngeal Obstruction in Athletes." Medicine and Science in Sports and Exercise, vol. 45, no. 11, 2013, pp. 2030-5.
Nielsen EW, Hull JH, Backer V. High prevalence of exercise-induced laryngeal obstruction in athletes. Med Sci Sports Exerc. 2013;45(11):2030-5.
Nielsen, E. W., Hull, J. H., & Backer, V. (2013). High prevalence of exercise-induced laryngeal obstruction in athletes. Medicine and Science in Sports and Exercise, 45(11), 2030-5. https://doi.org/10.1249/MSS.0b013e318298b19a
Nielsen EW, Hull JH, Backer V. High Prevalence of Exercise-induced Laryngeal Obstruction in Athletes. Med Sci Sports Exerc. 2013;45(11):2030-5. PubMed PMID: 23657163.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - High prevalence of exercise-induced laryngeal obstruction in athletes. AU - Nielsen,Emil Walsted, AU - Hull,James H, AU - Backer,Vibeke, PY - 2013/5/10/entrez PY - 2013/5/10/pubmed PY - 2014/6/27/medline SP - 2030 EP - 5 JF - Medicine and science in sports and exercise JO - Med Sci Sports Exerc VL - 45 IS - 11 N2 - INTRODUCTION: Unexplained respiratory symptoms reported by athletes are often incorrectly considered secondary to exercise-induced asthma. We hypothesized that this may be related to exercise-induced laryngeal obstruction (EILO). This study evaluates the prevalence of EILO in an unselected cohort of athletes. METHODS: We retrospectively reviewed the prevalence of EILO in a cohort of athletes (n = 91) referred consecutively during a 2-yr period for asthma workup including continuous laryngoscopy during exercise (CLE) testing. We compared clinical characteristics and bronchial hyperreactivity between athletes with and without EILO. RESULTS: Of 88 athletes who completed a full workup, 31 (35.2%) had EILO and 38 (43.2%) had a positive bronchoprovocation or bronchodilator reversibility test. The presence of inspiratory symptoms did not differentiate athletes with and without EILO. Sixty-one percent of athletes with EILO and negative bronchoprovocation and bronchodilator reversibility tests used regular asthma medication at referral. CONCLUSIONS: In athletes with unexplained respiratory symptoms, EILO is an important differential diagnosis not discerned from other etiologies by clinical features. These findings have important implications for the assessment and management of athletes presenting with persistent respiratory symptoms despite asthma therapy. SN - 1530-0315 UR - https://www.unboundmedicine.com/medline/citation/23657163/High_prevalence_of_exercise_induced_laryngeal_obstruction_in_athletes_ L2 - http://dx.doi.org/10.1249/MSS.0b013e318298b19a DB - PRIME DP - Unbound Medicine ER -