| Estimating maximum work rate during incremental cycle ergometry testing from six-minute walk distance in patients with chronic obstructive pulmonary disease. | |
MedLine Citation:
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PMID: 18760164 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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OBJECTIVE: To develop a predictive equation to permit estimation of the maximum work rate (Wmax) achieved during an incremental cycle ergometry test from the measurement of 6-minute walk distance (6MWD) and its derivative, 6-minute walk work, which is the product of 6MWD and body weight. DESIGN: Cross-sectional observational study. SETTING: Outpatient physiotherapy and pulmonary physiology clinics in a tertiary hospital. PARTICIPANTS: Patients (N=50; 36 men) with chronic obstructive pulmonary disease (forced expiratory volume in 1 second [FEV(1)]=37%+/-11% of predicted). INTERVENTIONS: Not applicable. MAIN OUTCOME MEASURES: Measurements were obtained of 6MWD and Wmax achieved during a laboratory-based, symptom-limited incremental cycle ergometry test. Linear regression analyses were performed using 6MWD, height, weight, and FEV(1) and using 6-minute walk work, height, and FEV(1) to determine their contribution to Wmax and to develop predictive equations for estimating Wmax. RESULTS: The equations derived to estimate Wmax using 6MWD and 6-minute walk work, respectively, were as follows: Wmax (W)=(0.122 x 6MWD)+(72.683 x height [m])-117.109 (r(2)=.67, standard error of the estimate [SEE]=10.8W) and Wmax (W)=17.393+(1.442 x 6-minute walk work) (r(2)=.60, SEE=11.8W). CONCLUSIONS: Wmax can be estimated from equations based on measurements of 6MWD or 6-minute walk work. The estimate of Wmax derived from either equation may provide a basis on which to prescribe cycle ergometry training work rates that comply with the current guidelines for pulmonary rehabilitation. |
Authors:
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Kylie Hill; Sue C Jenkins; Nola Cecins; Danielle L Philippe; David R Hillman; Peter R Eastwood |
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Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't |
Journal Detail:
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Title: Archives of physical medicine and rehabilitation Volume: 89 ISSN: 1532-821X ISO Abbreviation: Arch Phys Med Rehabil Publication Date: 2008 Sep |
Date Detail:
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Created Date: 2008-09-01 Completed Date: 2008-09-23 Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 2985158R Medline TA: Arch Phys Med Rehabil Country: United States |
Other Details:
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Languages: eng Pagination: 1782-7 Citation Subset: AIM; IM |
Affiliation:
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Department of Pulmonary Physiology, Sir Charles Gairdner Hospital, Nedlands, Western Australia, Australia. Kylie.Hill@westpark.org |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Aged Aged, 80 and over Analysis of Variance Cross-Sectional Studies Ergometry Exercise Test* Female Forced Expiratory Volume / physiology Humans Linear Models Male Middle Aged Oximetry Oxygen Consumption / physiology Prospective Studies Pulmonary Disease, Chronic Obstructive / physiopathology* Walking / physiology* |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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