| Intensity and daily reliability of the six-minute walk test in moderate chronic heart failure patients. | |
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MedLine Citation:
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PMID: 15375827 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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OBJECTIVE: To assess the intensity and daily reliability of the six-minute walk test (6MWT) in patients with moderate chronic heart failure (CHF). DESIGN: Evaluation of testing protocol. SETTING: Hospitalized care. PARTICIPANTS: CHF patients under optimal drug treatment (CHF-D, n=12) or optimal drug treatment plus multisite cardiac pacing (CHF-P, n=12). INTERVENTIONS: Not applicable. MAIN OUTCOME MEASURES: Peak values of oxygen uptake (VO2) and heart rate during a symptom-limited, treadmill exercise test and VO2, heart rate, and distance during 2 6MWT sessions (morning and afternoon). The 6MWT intensity was estimated by the ratio (%) of VO2 and heart rate values measured at the end of this test in relation to the respective peak values obtained during the treadmill exercise test. RESULTS: Subjects' VO2 and heart rate during the 6MWT were lower (P<.001) and were about 90% of the peak values (VO2: CHF-D, 90.5%+/-11.1%; CHF-P, 93.0%+/-13.2%; heart rate: CHF-D, 90.6%+/-6.6%; CHF-P, 91.4%+/-9.6%). The distance walked during both 6MWT sessions did not differ significantly, with low coefficients of variation (< or =2.0%) and high intraclass correlation coefficients (> or =.98). In CHF-D only, the patients' VO2 and heart rate were significantly (P<.01, P<.05, respectively) higher during the afternoon session. CONCLUSIONS: Despite an intensity significantly lower but close to that of the symptom-limited exercise test, the 6MWT was well tolerated in both CHF groups. In these populations, the 6MWT is reliable on a daily basis, for the distance walked. However, for assessing VO2 and heart rate values in CHF-D patients, the 6MWT must always be performed at the same time of day. |
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Authors:
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Gaëlle Kervio; Nathalie S Ville; Christophe Leclercq; Jean-Claude Daubert; François Carré |
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Publication Detail:
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Type: Journal Article; Validation Studies |
Journal Detail:
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Title: Archives of physical medicine and rehabilitation Volume: 85 ISSN: 0003-9993 ISO Abbreviation: Arch Phys Med Rehabil Publication Date: 2004 Sep |
Date Detail:
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Created Date: 2004-09-17 Completed Date: 2004-10-19 Revised Date: 2007-11-15 |
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: 1513-8 Citation Subset: AIM; IM |
Affiliation:
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Groupe de Recherche Cardio-Vasculaire, Université de Rennes 1, France. gaelle.kervio@club-internet.fr |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Aged Blood Pressure Body Mass Index Breath Tests / instrumentation, methods* Chronic Disease Clinical Protocols / standards Electrocardiography, Ambulatory / instrumentation, methods*, standards Exercise Test / instrumentation, methods*, standards Female Heart Failure / diagnosis*, drug therapy, metabolism, physiopathology Heart Rate Humans Male Middle Aged Oxygen Consumption Severity of Illness Index Stroke Volume Time Factors Ventricular Function, Left Walking* |
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