| Six-minute walk distance and work relationship with incremental treadmill cardiopulmonary exercise test in COPD. | |
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MedLine Citation:
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PMID: 22524795 Owner: NLM Status: Publisher |
Abstract/OtherAbstract:
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Introduction: Cardiopulmonary exercise testing (CPET) is increasingly used to evaluate the overall impact of the illness on patients with COPD.While laboratory tests of exercise performance are costly, the six-minute walk test (6-MWT) can be more easily performed. Although the main outcome commonly used in this field test is the distance walked in 6 minutes (6-MWD), this measure does not account for differences in body weight. Previous studies showed a good correlation between the work performed during the 6-MWT with incremental cycling CPET, an exercise modality more associated with quadriceps fatigability and lower peak oxygen consumption () than incremental walking tests. Objective: Evaluate the correlation between the 6-MWD and its derivative body weight-walking distance product, an estimation of the work performed during the 6-MWT, with peak from a treadmill CPET. Methods: Thirty COPD patients (FEV(1) = 39 ± 13%; peak = 68.7 ± 17.4% predicted) performed CPET to the limit of tolerance on a treadmill and 6-MWT, 48 h apart.6-MWD and work were correlated to resting and exercise functional variables. Results: The work of walking during the 6-MWT provided greater associations with peak than observed with 6-MWD. This was the case for FEV(1) , FVC, IC, D(L) CO, peak , , , and double product (r=0.57, r=0.57, r=0.73, r=0.7, r=0.75, r=0.65, r=0.51, and r= 0.4, respectively; all p<0.05). Conclusion: A better association was found between the work estimated from the 6-MWT and peak achieved during CPET, in this case with a treadmill, than the 6-MWD alone. © 2012 Blackwell Publishing Ltd. |
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Authors:
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Karla Poersch; Danilo C Berton; Daversom Bordin Canterle; Juliano Castilho; André L Lopes; Jocelito Martins; Alvaro R Oliveira; Paulo José Zimermann Teixeira |
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Publication Detail:
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Type: JOURNAL ARTICLE Date: 2012-4-24 |
Journal Detail:
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Title: The clinical respiratory journal Volume: - ISSN: 1752-699X ISO Abbreviation: - Publication Date: 2012 Apr |
Date Detail:
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Created Date: 2012-4-24 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 101315570 Medline TA: Clin Respir J Country: - |
Other Details:
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Languages: ENG Pagination: - Citation Subset: - |
Copyright Information:
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© 2012 Blackwell Publishing Ltd. |
Affiliation:
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Universidade Federal do Rio Grande do Sul (UFRGS); Instituto de Ciências da Saúde, Universidade Feevale; Universidade Federal de Ciências da Saúde dePorto Alegre, Pavilhão Pereira Filho, Santa Casa de Porto Alegre, Porto Alegre, Brazil. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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