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Exercise-induced asthma

R A Tan1, S L Spector

  • 1Allergy Research Foundation, Los Angeles, California, USA.

Sports Medicine (Auckland, N.Z.)
|February 12, 1998
PubMed
Summary
This summary is machine-generated.

Exercise-induced asthma (EIA) involves airway obstruction after exertion, often triggered by cold, dry air. Prevention through warm-ups, environmental control, and medication is key for managing EIA in athletes.

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Area of Science:

  • Pulmonology
  • Sports Medicine
  • Allergy and Immunology

Background:

  • Exercise-induced asthma (EIA) is a common condition causing temporary airway narrowing after physical activity.
  • It is diagnosed by a significant drop in FEV1 post-exercise.
  • Key triggers include inhaling large volumes of cold, dry air, leading to airway cooling and water loss.

Purpose of the Study:

  • To review the mechanisms, diagnosis, and management of exercise-induced asthma.
  • To highlight the importance of prevention and available treatment options for athletes with asthma.

Main Methods:

  • Diagnostic criteria involve monitoring FEV1 response to exercise.
  • Mechanisms explored include mucosal osmolarity changes and post-exercise airway rewarming.
  • Severity is linked to ventilation volume and air temperature during exercise.

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Main Results:

  • EIA symptoms manifest post-exercise, peaking within 15 minutes and resolving in an hour.
  • A refractory period of up to 3 hours limits bronchospasm with repeat exercise.
  • Cold, dry air and high ventilation rates exacerbate EIA risk.

Conclusions:

  • Prevention strategies are paramount for managing EIA in sports.
  • Non-pharmacological methods include proper warm-up/cool-down and environmental adjustments.
  • Pharmacological options range from inhaled beta-agonists for prophylaxis to newer agents like antileukotrienes.