Vitamin C for asthma and exercise-induced bronchoconstriction

Is Exercise-Induced Bronchoconstriction Exercise-Induced Asthma?

The article in this issue of RESPIRATORY CARE by Burnett et al1 reports that 34 of 80 college athletes had exerciseinduced bronchoconstriction (EIB), most in the absence of symptoms. The authors further suggest that these athletes are at risk and that the identification of those with EIB may prevent morbidity and mortality. The implication is that the presence of EIB is evidence for asthma. But...

Vitamin C and exercise-induced bronchoconstriction in athletes.

Vitamin C should be tested against exercise-induced bronchoconstriction.

An ATS Clinical Practice Guideline reviewed treatments for exercise-induced bronchoconstriction (EIB) and commented briefly on vitamin C (1). The authors identified two controlled trials (2, 3) in which vitamin C halved the fall in FEV1 after exercise, but the authors did not calculate confidence intervals (CIs) for the effect. A third randomized, double-blind, placebo-controlled trial on vitam...

Vitamin C may alleviate exercise-induced bronchoconstriction: a meta-analysis

OBJECTIVE To determine whether vitamin C administration influences exercise-induced bronchoconstriction (EIB). DESIGN Systematic review and meta-analysis. METHODS MEDLINE and Scopus were searched for placebo-controlled trials on vitamin C and EIB. The primary measures of vitamin C effect used in this study were: (1) the arithmetic difference and (2) the relative effect in the postexercise f...

Asthma Bronchiale and Exercise-Induced Bronchoconstriction.

Exercising regularly has a wide range of beneficial health effects; in particular, it has been well documented to help in the management of chronic illnesses including asthma. However, in some individuals, exertion can also trigger an exacerbation of asthmatic episodes and subsequent acute attacks of breathlessness, coughing, tightness of the chest and wheezing. This physiological process is ca...