Article

OBJECTIVE: To systematically review the psychometric evidence on the 2-minute
walk test (2MWT). DATA SOURCES: Electronic searches of databases including
MEDLINE, CINAHL, Academic Search Premier, SPORTDiscus, PsycINFO, EMBASE, the
Cochrane Library, and DARE were done until February 2014 using a combination of
subject headings and free texts. STUDY SELECTION: Studies were included if
psychometric properties of the 2MWT were (1) evaluated; (2) written as full
reports; and (3) published in English language peer-reviewed journals. DATA EXTRACTION: A modified consensus-based standard for the selection of health
measurement instruments checklist was used to rate the methodological quality of
the included studies. A quality assessment for statistical outcomes was used to
assess the measurement properties of the 2MWT. DATA SYNTHESIS: Best-evidence
synthesis was collated from 25 studies of 14 patient groups. Only 1 study was
found that examined the 2MWT in the pediatric population. The testing procedures
of the 2MWT varied across the included studies. Reliability, validity (construct
and criterion), and responsiveness of the 2MWT also varied across different
patient groups. Moderate to strong evidence was found for reliability, convergent
validity, discriminative validity, and responsiveness of the 2MWT in frail
elderly patients. Moderate to strong evidence for reliability, convergent
validity, and responsiveness was found in adults with lower limb amputations.
Moderate to strong evidence for validity (convergent and discriminative) was
found in adults who received rehabilitation after hip fractures or cardiac
surgery. Limited evidence for the psychometric properties of the 2MWT was found
in other population groups because of methodological flaws. CONCLUSIONS: There is
inadequate breadth and depth of psychometric evidence of the 2MWT for clinical
and research purposes-specifically, minimal clinically important changes and
responsiveness. More good-quality studies are needed, especially in the pediatric
population. Consensus on standardized testing procedures of the 2MWT is also
required.
CI - Copyright (c) 2014 American Congress of Rehabilitation Medicine. Published by
Elsevier Inc. All rights reserved.

Langue : ANGLAIS