| Dyspnea perception in COPD: Association between anxiety, dyspnea-related fear and dyspnea in a pulmonary rehabilitation program. | |
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MedLine Citation:
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PMID: 21493698 Owner: NLM Status: Publisher |
Abstract/OtherAbstract:
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Abstract BACKGROUND: A growing body of research connects anxiety with poorer outcomes in COPD. However, more specific measures of dyspnea-related fear may be more closely related to critical processes involved in pulmonary rehabilitation (perception of dyspnea and avoidance of physical activity) and may have a predictive value for COPD outcome beyond general anxiety measures. METHODS: In this naturalistic outcome study, we investigated effects of baseline anxiety and dyspnea-related fear on perceived dyspnea and other outcomes of a well-established pulmonary rehabilitation program for COPD. RESULTS: 73 patients participated in the study. At baseline, higher dyspnea-related fear was associated with higher levels of dyspnea during ergometer exercise, but also with a steeper decrease of exercise dyspnea during the course of pulmonary rehabilitation whereas lower dyspnea-related fear was associated with an increase in exercise dyspnea, even when controlling for anxiety, lung function and exercise intensity. Furthermore, higher dyspnea-related fear was associated with reduced quality of life (mastery subscale) and maximal exercise capacity at baseline, but also with a steeper increase in quality of life (emotions and mastery subscale) and exercise capacity during rehabilitation. However, the association of dyspnea-related fear with worse 6-minute walking distance and impairment in daily activities persisted throughout rehabilitation. CONCLUSIONS: Results indicate a mediating effect of dyspnea-related fear on the association between anxiety and exercise-related dyspnea. Exercise in pulmonary rehabilitation in persons with higher baseline dyspnea-related fear may act as a correction of excessive symptom reports through exposure to dyspneic situations. |
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Authors:
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Thomas Janssens; Steven De Peuter; Linda Stans; Geert Verleden; Thierry Troosters; Marc Decramer; Omer Van den Bergh |
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Publication Detail:
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Type: JOURNAL ARTICLE Date: 2011-4-14 |
Journal Detail:
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Title: Chest Volume: - ISSN: 1931-3543 ISO Abbreviation: - Publication Date: 2011 Apr |
Date Detail:
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Created Date: 2011-4-15 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 0231335 Medline TA: Chest Country: - |
Other Details:
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Languages: ENG Pagination: - Citation Subset: - |
Affiliation:
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aResearch Group Health Psychology, Department of Psychology, University of Leuven, Belgium. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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