Relation of Exercise Capacity With Lung Volumes Before and After 6-Minute Walk Test in Subjects With COPD.
INTRODUCTION: There is growing evidence that exercise-induced variation in lung volumes is an important source of ventilatory limitation and is linked to exercise intolerance in COPD. The aim of this study was to compare the correlations of walk distance and lung volumes measured before and after a...
| Publicado en: | Respiratory Care Vol. 59; no. 11; pp. 1687 - 1696 |
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| Autores principales: | , , , , , |
| Formato: | research tables/charts Journal Article |
| Publicado: |
Mary Ann Liebert, Inc.
Nov2014
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| Acceso en línea: | Ver este registro en EBSCOhost |
| fields | @attributes: recordID: 1 pdfLink: plink: https://search.ebscohost.com/login.aspx?direct=true&db=ccm&AN=103777225&site=ehost-live header: @attributes: shortDbName: ccm uiTerm: 103777225 longDbName: CINAHL Complete uiTag: AN controlInfo: bkinfo: dissinfo: jinfo: jid: 00201324 4GG jtl: Respiratory Care issn: 00201324 maglogo: N pubinfo: dt: Nov2014 vid: 59 iid: 11 pid: 1365 pub: Mary Ann Liebert, Inc. place: New Rochelle, New York artinfo: ui: 103777225 99113008 10.4187/respcare.03082 NLM25249649 103777225 ppf: 1687 ppct: 9 formats: fmt: @attributes: type: P tig: atl: Relation of Exercise Capacity With Lung Volumes Before and After 6-Minute Walk Test in Subjects With COPD. aug: au: Wibmer, Thomas Rüdiger, Stefan Kropf-Sanchen, Cornelia Stoiber, Kathrin M. Rottbauer, Wolfgang Schumann, Christian affil: Department of Internal Medicine II, University Hospital of Ulm, Ulm, Germany sug: subj: Pulmonary Disease, Chronic Obstructive Lung Volume Measurements Exercise Tolerance Evaluation Human Clinical Assessment Tools Pearson's Correlation Coefficient Record Review Spirometry Practice Guidelines Male Female Middle Age Aged Two-Tailed Test Descriptive Statistics Data Analysis Software Step-Wise Multiple Regression Correlational Studies Middle Aged: 45-64 years Aged: 65+ years Male Female ab: INTRODUCTION: There is growing evidence that exercise-induced variation in lung volumes is an important source of ventilatory limitation and is linked to exercise intolerance in COPD. The aim of this study was to compare the correlations of walk distance and lung volumes measured before and after a 6-min walk test (6MWT) in subjects with COPD. METHODS: Forty-five subjects with stable COPD (mean pre-bronchodilator FEV1: 47 ± 18% predicted) underwent a 6MWT. Body plethysmography was performed immediately pre- and post-6MWT. RESULTS: Correlations were generally stronger between 6-min walk distance and post-6MWT lung volumes than between 6-min walk distance and pre-6MWT lung volumes, except for FEV1. These differences in Pearson correlation coefficients were significant for residual volume expressed as percent of total lung capacity (-0.67 vs -0.58, P = .043), percent of predicted residual volume expressed as percent of total lung capacity (-0.68 vs -0.59, P = .026), inspiratory vital capacity (0.65 vs 0.54, P = .019), percent of predicted inspiratory vital capacity (0.49 vs 0.38, P = .037), and percent of predicted functional residual capacity (0.62 vs 0.47, P = .023). CONCLUSIONS: In subjects with stable COPD, lung volumes measured immediately after 6MWT are more closely related to exercise limitation than baseline lung volumes measured before 6MWT, except for FEV1. Therefore, pulmonary function testing immediately after exercise should be included in future studies on COPD for the assessment of exercise-induced ventilatory constraints to physical performance that cannot be adequately assessed from baseline pulmonary function testing at rest. pubtype: Academic Journal doctype: research tables/charts Journal Article ougenre: Article language: English refInfo: holdings: @attributes: islocal: N |
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