Document Detail


Effect of lycopene supplementation on lung function after exercise in young athletes who complain of exercise-induced bronchoconstriction symptoms.
MedLine Citation:
PMID:  15875530     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
BACKGROUND: It has been suggested that exercise-induced bronchoconstriction may involve oxidative stress. Strenuous exercise promotes free radical production, which can lead to many of the pathophysiologic changes associated with asthma, including bronchoconstriction, mucus secretion, and microvascular leakage. Lycopene has been shown to have high antioxidative activity. OBJECTIVE: To evaluate the effect of lycopene supplementation on airway hyperreactivity and inflammation in young athletes who complain of difficulty in breathing related to physical exertion. METHODS: Nineteen young athletes with exercise-related difficulty in breathing visited the exercise laboratory 3 times. During the first visit, participants underwent a baseline evaluation of exercise-induced bronchoconstriction. Daily for 1 week before each of the 2 subsequent visits, participants ingested 30 mg of lycopene (a natural antioxidant) or placebo (in randomized order, double-blind). A 2-week washout period was given between each visit. During each visit, lung functions were evaluated before and after an 8-minute run on the treadmill (85% of the predicted maximal heart rate). RESULTS: There was no difference in the mean+/-SD decrease in forced expiratory volume in 1 second after exercise during lycopene treatment compared with placebo treatment (11.8%+/-12.5% and 11.0%+/-11.6%). In addition, there was no apparent division into responders and nonresponders. CONCLUSION: A daily dose of lycopene for 1 week does not affect lung function after exercise and may not provide any protective effect against clinical difficulty in breathing in young athletes.
Authors:
Bareket Falk; Ruti Gorev; Levana Zigel; Ami Ben-Amotz; Ittai Neuman
Publication Detail:
Type:  Clinical Trial; Journal Article; Randomized Controlled Trial; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Annals of allergy, asthma & immunology : official publication of the American College of Allergy, Asthma, & Immunology     Volume:  94     ISSN:  1081-1206     ISO Abbreviation:  Ann. Allergy Asthma Immunol.     Publication Date:  2005 Apr 
Date Detail:
Created Date:  2005-05-06     Completed Date:  2005-05-24     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  9503580     Medline TA:  Ann Allergy Asthma Immunol     Country:  United States    
Other Details:
Languages:  eng     Pagination:  480-5     Citation Subset:  IM    
Affiliation:
Ribstein Center for Sports Medicine Sciences and Research, Wingate Institute, Netanya, Israel. bfalk@brocku.ca
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MeSH Terms
Descriptor/Qualifier:
Adolescent
Antioxidants / pharmacology*
Bronchoconstriction / drug effects*,  physiology
Carotenoids / administration & dosage*,  blood
Child
Dietary Supplements
Double-Blind Method
Exercise / physiology*
Female
Humans
Lung / drug effects*,  physiology*
Male
Respiratory Function Tests
Sports / physiology*
Chemical
Reg. No./Substance:
0/Antioxidants; 36-88-4/Carotenoids; 502-65-8/lycopene

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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