1 / 14

Exercise-Induced Bronchoconstriction (EIB)

Exercise-Induced Bronchoconstriction, Asthma, Airway Inflammation and Treatment in Elite Athletes. Exercise-Induced Bronchoconstriction (EIB) Acute, transient airway narrowing during and after exercise

nenet
Download Presentation

Exercise-Induced Bronchoconstriction (EIB)

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript


  1. Exercise-Induced Bronchoconstriction, Asthma, Airway Inflammation and Treatment in Elite Athletes • Exercise-Induced Bronchoconstriction (EIB) • Acute, transient airway narrowing during and after exercise • EIB defined as a 10 % decline in FEV 1 after appropriate exercise provocation • EIB present in 50 to 90 % of asthmatics, in 10 % of nonasthmatic subjects

  2. Prevalence of EIB in athletes • range from 11-50 %

  3. Prevalence of EIB in athletes • USA Olympic Committee – 11.2 % in athletes competing in the 1984 Summer Olympics • Prevalence underestimated- athletes experience lack of awareness of symptoms suggestive of EIB • Athletes do´nt adjust to health personnel their medical problems

  4. Pathogenesis of EIB • multifactorial, not completely understood • evaporative water loss (dry air breathing) results in the release of mediators (histamine) • large volume of colder air are exchange, owerhelming upper airway ability to warm the air effectively-airway narrowing • inflammation in the airways (eosinophils, activated neutrophils) in swimmers, ice-hockey players, cross country skiers • decrease of inflammatory cells after discontinuing high-level exercise

  5. Athletic population at risk • Prevalent especially in endurance events (long-distance running, swimming, cross-county skiing) • More prevalent in winter sport athletes (increased cooling of airways) • More in high ventilation sports see table – next slide

  6. Athletic population at risk • Competition in polluted enviroment (chlorine in swimmers, chemicals in ice-resurfacing machinery, particulate matter,CO, NO) • Exposure to allergens (pollen, mites, molds)

  7. Clinical presentation Common symptoms • cough, wheezing, chest tightness, dyspnoea More subttle symptoms • fatigue, poor performance • symptoms peak 5-10 min. after exercise cease, lasting for 30-60 minutes

  8. Diagnosis

  9. Management strategies of EIB

  10. Bronchial asthma in athletes • Prevalence • in summer – sport athletes varies from 3.7 % to 22.8 % • incidence higher in long-distance runners -15.5 – 23.9 % • risk of astma associated with atopy • combination of sporting event and atopy- 42-fold risk of asthma in long distance runners,97-fold in atopic swimmers compared to nonatopic controls

  11. Treatment of asthma in athletes • the same therapy as in normal poeple • B2 agonist use according to IOC requirements (positive bronchodilation test, positive bronchial provocation test-eucapnic voluntary hyperpnea test, exercise challenge in the laboratory or in the field, hypertonic aerosol test,methacholine test)

  12. Physicians check list of common environmental factors for allergic athletes

More Related