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    Rollator use does not consistently change the metabolic cost of walking in people with Chronic Obstructive Pulmonary Disease

    Access Status
    Fulltext not available
    Authors
    Hill, Kylie
    Dolmage, T.
    Woon, L.
    Brooks, D.
    Goldstein, R.
    Date
    2012
    Type
    Journal Article
    
    Metadata
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    Citation
    Hill, Kylie and Dolmage, Thomas and Woon, Lynda and Brooks, Dina and Goldstein, Roger. 2012. Rollator use does not consistently change the metabolic cost of walking in people with Chronic Obstructive Pulmonary Disease. Archives of Physical Medicine and Rehabilitation. 93 (6): pp. 1077-1080.
    Source Title
    Archives of Physical Medicine and Rehabilitation
    DOI
    10.1016/j.apmr.2012.01.009
    ISSN
    0894-9115
    URI
    http://hdl.handle.net/20.500.11937/30865
    Collection
    • Curtin Research Publications
    Abstract

    Objectives: To (1) evaluate whether the use of a rollator changed metabolic cost during a controlled walking task, and (2) explore relationships between the difference in dyspnea and metabolic cost associated with rollator use. Design: Single-group interventional study in which patients completed 2 corridor walks: 1 without and 1 with a rollator, at the same individualized constant speed. Setting: Rehabilitation hospital. Participants: Patients with chronic obstructive pulmonary disease (N=15; 10 men; median age [interquartile range; IQR]=69 [12]y; forced expiratory volume in 1 second=42 [20]% predicted). Intervention: Rollator use. Main Outcome Measures: Oxygen uptake, converted to metabolic equivalent units (METs), and minute ventilation were measured throughout both tasks using a portable gas analysis system; dyspnea and arterial oxygen saturation (SpO2) were collected on completion. Results: Median [IQR] walk speed [IQR] was 48 (10)m/min. Walking with a rollator, compared with walking without, reduced dyspnea (median [IQR]=1.0 [1.5] vs 2.0 [2.0]; P=.01) without changing energy expenditure (median [IQR]=2.8 [1.2] vs 3.2 [0.9] METs; P=.65), minute ventilation (median [IQR]=30.3 [9.6] vs 27.7 [9.9]L/min; P=.50), or SpO2 (median [IQR]=92 [8]% vs 94 [10]%; P=.41). The association between the reduction in dyspnea and any difference in energy expenditure related to rollator use was of borderline significance (rs=.50; P=.06). Six of the 8 participants who experienced a reduction in dyspnea also demonstrated a reduction in the metabolic cost of walking. Conclusions: The mechanism responsible for the amelioration in dyspnea during rollator-assisted walking is multifactorial. A reduction in the metabolic cost of walking may play a part in some, but not all, patients.

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