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    The 6-min walk test: responses in healthy Canadians aged 45 to 85 years

    Access Status
    Fulltext not available
    Authors
    Hill, Kylie
    Wickerson, L.
    Woon, L.
    Abady, A.
    Overend, T.
    Goldstein, R.
    Brooks, D.
    Date
    2011
    Type
    Journal Article
    
    Metadata
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    Citation
    Hill, Kylie and Wickerson, Lisa M. and Woon, Lynda J. and Abady, Afshin Heidar and Overend, Tom J. and Goldstein, Roger S. and Brooks, Dina. 2011. The 6-min walk test: responses in healthy Canadians aged 45 to 85 years. Applied Physiology, Nutrition and Metabolism. 36 (5): pp. 643-649.
    Source Title
    Applied Physiology, Nutrition and Metabolism
    DOI
    10.1139/H11-075
    ISSN
    1715-5312
    School
    School of Physiotherapy
    URI
    http://hdl.handle.net/20.500.11937/9277
    Collection
    • Curtin Research Publications
    Abstract

    We sought to describe responses to the 6-min walk test (6MWT) in healthy Canadian adults in order to facilitate interpretation of its results in patient populations. Seventy-seven healthy Canadians aged 45 to 85 years (65 ± 11 years, 40 females) completed this study. During a single visit, three 6MWTs were undertaken. The main outcome measure was 6-min walk distance (6MWD). Age, gender, height, and weight were recorded. In 61 (79%) participants, cardiorespiratory variables were collected during the third 6MWT using a calibrated portable gas analysis system. The 6MWD increased between the first and second test (615 ± 96 to 639 ± 98 m; p < 0.001) with no further improvement on the third test (638 ± 99 m; p = 0.945). The best 6MWD from the first 2 tests was 640 ± 99 m (range 416 to 880 m). A greater 6MWD was achieved by males compared with females (672 ± 94 vs. 611 ± 93 m; p = 0.005). The following equation accounted for 49% of the variance in 6MWD: 6MWD = 970.7 + (–5.5 × age) + (56.3 × gender), where females = 0, males = 1. The 6MWT elicited large cardiorespiratory responses with minimal symptoms. The rate of oxygen uptake measured at test-end was associated with the 6MWD (r = 0.802; p < 0.001). These data allow the 6MWD achieved in Canadian adults to be expressed as a percentage of the predicted value and provide researchers and clinicians with values for the expected cardiorespiratory responses in a healthy adult population for the purpose of comparison with patient populations.

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