Document Detail

Energy expenditure and impact of bronchodilators in COPD patients.
MedLine Citation:
PMID:  20471237     Owner:  NLM     Status:  MEDLINE    
28 Consecutive COPD patients performed four 6-minute walking tests (6-MWTs) in 2 different days before and 2, 4 and 6h after the inhalation of formoterol 12microg or tiotropium 18microg, respectively. Physical activity during each 6-MWT was assessed by the SenseWear Armband. At each time also spirometry was performed. Both formoterol and tiotropium induced a significantly sustained bronchodilation and influenced hyperinflation. Formoterol significantly increased distance walked in 6min at 2h and at 4h, whereas tiotropium significantly increased it at all time points. There was a trend to an increase in calories and metabolic equivalents of task (METs) after formoterol and a decrease after tiotropium, but changes were not statistically significant. Total energy expenditure for each 6-MWT was not changed by formoterol, but decreased in significant manner 6h after the inhalation of tiotropium. Active energy expenditure at physical activity level of more than 3 METs decreased significantly after tiotropium at each 6-MWT, but not after formoterol. We did not find any significant correlation between the changes in lung function and those of parameters recorded with SenseWear Armband. Our study seems to indicate that tiotropium, but not formoterol, is able to reduce energy expenditure in COPD patients, although both drugs elicit significant bronchodilation and are able to increase the distance walked in 6min.
Mario Cazzola; Andrea Segreti; Emanuele Stirpe; Massimiliano Appodia; Lucia Senis; Maria G Matera
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Publication Detail:
Type:  Journal Article     Date:  2010-05-14
Journal Detail:
Title:  Respiratory medicine     Volume:  104     ISSN:  1532-3064     ISO Abbreviation:  Respir Med     Publication Date:  2010 Oct 
Date Detail:
Created Date:  2010-09-06     Completed Date:  2011-02-24     Revised Date:  2013-06-11    
Medline Journal Info:
Nlm Unique ID:  8908438     Medline TA:  Respir Med     Country:  England    
Other Details:
Languages:  eng     Pagination:  1490-4     Citation Subset:  IM    
Division of Respiratory Diseases, Department of Internal Medicine, University of Rome Tor Vergata, Rome, Italy.
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MeSH Terms
Bronchodilator Agents / therapeutic use*
Drug Therapy, Combination
Energy Metabolism / drug effects*,  physiology
Ethanolamines / therapeutic use*
Exercise Test / methods
Exercise Tolerance / drug effects*,  physiology
Forced Expiratory Volume / drug effects
Middle Aged
Pulmonary Disease, Chronic Obstructive / drug therapy*,  physiopathology
Scopolamine Derivatives / therapeutic use*
Treatment Outcome
Walking / physiology
Reg. No./Substance:
0/Bronchodilator Agents; 0/Ethanolamines; 0/Scopolamine Derivatives; 0EB439235F/tiotropium; 5ZZ84GCW8B/formoterol

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

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