Document Detail


Maximal exercise test results in subacute stroke.
MedLine Citation:
PMID:  16876556     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
OBJECTIVES: To establish the feasibility and reliability of graded maximal exercise testing, suitability of standard indexes of maximum oxygen consumption (Vo(2)max), and evidence of trial-to-trial practice effects in subacute stroke. DESIGN: Descriptive, cross-sectional study. SETTING: Rehabilitation hospital. PARTICIPANTS: Consecutive sample of 35 participants (mean age, 65.7+/-2.6 y; mean days poststroke, 17.6+/-2.2 d). INTERVENTIONS: Not applicable. MAIN OUTCOME MEASURES: Graded maximal exercise test using semirecumbent cycle ergometry. A subset (n=20) performed repeated tests to determine test-retest reliability and presence of practice effects. RESULTS: Thirty-one (89%) participants completed the exercise test without symptomatic responses (mean peak level of oxygen consumed [Vo(2)peak], 10.7 mL.kg(-1).min(-1); peak work rate, 39 W). Twelve (34%), 15 (44%), and 3 (9%) participants achieved oxygen consumption per unit time (Vo(2)) plateau, respiratory exchange ratio, and heart rate criteria, respectively. Although test-retest correlations were high (intraclass correlation coefficient range, .67-.87), higher Vo(2)peak (1.0 mL.kg(-1).min(-1), P=.04) and work rate (7.3 W, P=.01) were observed with repeated testing, with no associated increase in reaching standard criteria for Vo(2)max. CONCLUSIONS: This work has important implications for developing guidelines for measuring aerobic capacity early after stroke. Although maximal exercise testing using semirecumbent cycle ergometry is feasible, standard Vo(2)max criteria are not consistently appropriate. At least 1 practice trial is recommended before the actual evaluation is performed.
Authors:
Ada Tang; Kathryn M Sibley; Scott G Thomas; William E McIlroy; Dina Brooks
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Archives of physical medicine and rehabilitation     Volume:  87     ISSN:  0003-9993     ISO Abbreviation:  Arch Phys Med Rehabil     Publication Date:  2006 Aug 
Date Detail:
Created Date:  2006-07-31     Completed Date:  2006-09-12     Revised Date:  2007-11-15    
Medline Journal Info:
Nlm Unique ID:  2985158R     Medline TA:  Arch Phys Med Rehabil     Country:  United States    
Other Details:
Languages:  eng     Pagination:  1100-5     Citation Subset:  AIM; IM    
Affiliation:
Department of Physical Therapy, University of Toronto, ON, Canada.
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MeSH Terms
Descriptor/Qualifier:
Adult
Aged
Aged, 80 and over
Exercise Test*
Female
Humans
Male
Middle Aged
Oxygen Consumption / physiology
Reproducibility of Results
Stroke / physiopathology*

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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