Article

OBJECTIVES: To provide (1) normative reference values for the 2-minute walk test
(2MWT), (2) reference equations for the 2MWT, and (3) information on the
reliability and responsiveness of the 2MWT across the adult lifespan. DESIGN: Cross-sectional study. SETTING: General community settings. PARTICIPANTS: A
population-based sample of adult participants (N=1137) contributed data to this
study, which was part of the National Institutes of Health (NIH) Toolbox for the
Assessment of Neurological and Behavioral Function Norming Project.
INTERVENTIONS: Not applicable. MAIN OUTCOME MEASURE: 2MWT. RESULTS: Overall, the
distance participants walked ranged from 64.6 to 300.8m (mean, 180.9m). Men
walked farther than did women (189.4m vs 176.0m; t=6.8; df=1,135; P<.001).
Significant correlations were observed between the 2MWT and age (r=-.41), height
(r=.29), weight (r=-.16), and body mass index (r=-.32). Age and body mass index
were used in the linear regression modeling to predict the 2MWT distance
(R(2)=.55-.56). Test-retest reliability of the 2MWT as characterized by the
intraclass correlation coefficient was .82 (95% confidence interval, .76-.87).
Based on a standard error of measurement of 15.3m, the minimum detectable change
for the 2MWT was 42.5m. CONCLUSIONS: The study presents norms of the 2MWT
established by the NIH Toolbox. The norms can be used to determine the presence
of limitations in walking endurance across the lifespan.
CI - Copyright (c) 2015 American Congress of Rehabilitation Medicine. Published by Elsevier Inc. All rights reserved.

Langue : ANGLAIS