Document Detail


Impact of high-intensity exercise on nitric oxide exchange in healthy adults.
MedLine Citation:
PMID:  12783048     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
PURPOSE: After exercise, exhaled NO concentration has been reported to decrease, remain unchanged, or increase. A more mechanistic understanding of NO exchange dynamics after exercise is needed to understand the relationship between exercise and NO exchange. METHODS: We measured several flow-independent NO exchange parameters characteristic of airway and alveolar regions using a single breath maneuver and a two-compartment model (maximum flux of NO from the airways, J'(awNO), pL x s-1; diffusing capacity of NO in the airways, D(awNO), pL x s-1 x ppb-1; steady state alveolar concentration, C(alv,ss), ppb; mean airway tissue NO concentration, C(awNO), ppb), as well as serum IL-6 at baseline, 3, 30, and 120 min after a high-intensity exercise challenge in 10 healthy adults (21-37 yr old). RESULTS: D(awNO) (mean +/- SD) increased (37.1 +/- 44.4%), whereas J'(awNO) and C(awNO) decreased (-7.27 +/- 11.1%, -26.1 +/- 24.6%, respectively) 3 min postexercise. IL-6 increased steadily after exercise to 481% +/- 562% above baseline 120 min postexercise. CONCLUSION: High-intensity exercise acutely enhances the ability of NO to diffuse between the airway tissue and the gas phase, and exhaled NO might be used to probe both the metabolic and physical properties of the airways.
Authors:
Hye-Won Shin; Christine M Rose-Gottron; Dan M Cooper; Maryann Hill; Steven C George
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Publication Detail:
Type:  Journal Article; Research Support, U.S. Gov't, P.H.S.    
Journal Detail:
Title:  Medicine and science in sports and exercise     Volume:  35     ISSN:  0195-9131     ISO Abbreviation:  Med Sci Sports Exerc     Publication Date:  2003 Jun 
Date Detail:
Created Date:  2003-06-03     Completed Date:  2003-09-04     Revised Date:  2008-11-21    
Medline Journal Info:
Nlm Unique ID:  8005433     Medline TA:  Med Sci Sports Exerc     Country:  United States    
Other Details:
Languages:  eng     Pagination:  995-1003     Citation Subset:  IM; S    
Affiliation:
Department of Chemical Engineering and Materials Science, University of California, Irvine, 92697, USA.
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MeSH Terms
Descriptor/Qualifier:
Adult
Exercise / physiology*
Female
Free Radical Scavengers / analysis,  metabolism*
Humans
Male
Nitric Oxide / analysis,  metabolism*
Pulmonary Alveoli / physiology
Respiratory Physiological Phenomena*
Grant Support
ID/Acronym/Agency:
HD23969/HD/NICHD NIH HHS; HL60636/HL/NHLBI NIH HHS; RR00827/RR/NCRR NIH HHS
Chemical
Reg. No./Substance:
0/Free Radical Scavengers; 10102-43-9/Nitric Oxide

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