Article

OBJECTIVES: To evaluate, for individuals with chronic stroke with cognitive
impairment, (1) the effects of a practice test on peak cardiorespiratory fitness
test results; (2) cardiorespiratory fitness test-retest reliability;
and (3) the
relationship between individual practice test effects and cognitive impairment.
DESIGN: Cross-sectional. SETTING: Rehabilitation center. PARTICIPANTS: A
convenience sample of 21 persons (men [n=12] and women [n=9]; age range, 48-81y;
44.9+/-36.2mo poststroke) with cognitive impairments who had sufficient lower
limb function to perform the test. INTERVENTIONS: Not applicable. MAIN OUTCOME
MEASURE: Peak oxygen consumption (Vo(2)peak, ml.kg(-1).min(-1)). RESULTS:
Test-retest reliability of Vo(2)peak was excellent (intraclass correlation
coefficient model 2,1 [ICC2,1]=.94; 95% confidence interval [CI], .86-.98). A
paired t test showed that there was no significant difference for the group for
Vo(2)peak obtained from 2 symptom-limited cardiorespiratory fitness tests
performed 1 week apart on a semirecumbent cycle ergometer (test 2-test 1
difference, -.32ml.kg(-1).min(-1); 95% CI, -.69 to 1.33ml.kg(-1).min(-1);
P=.512). Individual test-retest differences in Vo(2)peak were, however,
positively related to general cognitive function as measured by the Mini-Mental
State Examination (rho=.485; P<.026). CONCLUSIONS:
Vo(2)peak can be reliably
measured in this group without a practice test. General cognitive function,
however, may influence the effect of a practice test in that those with lower
general cognitive function appear to respond differently to a practice test than
those with higher cognitive function.
CI - Copyright (c) 2013 American Congress of Rehabilitation Medicine. Published by
Elsevier Inc. All rights reserved.

Langue : ANGLAIS