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    Validity of Multisensor Array for Measuring Energy Expenditure of an Activity Bout in Early Stroke Survivors

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    Author
    Kramer, SF; Johnson, L; Bernhardt, J; Cumming, T
    Date
    2018-01-01
    Source Title
    Stroke Research and Treatment
    Publisher
    HINDAWI LTD
    University of Melbourne Author/s
    Cumming, Toby; Bernhardt, Julie; Kramer, Sharon; Johnson, Liam
    Affiliation
    Florey Department of Neuroscience and Mental Health
    Physiotherapy
    Metadata
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    Document Type
    Journal Article
    Citations
    Kramer, S. F., Johnson, L., Bernhardt, J. & Cumming, T. (2018). Validity of Multisensor Array for Measuring Energy Expenditure of an Activity Bout in Early Stroke Survivors. STROKE RESEARCH AND TREATMENT, 2018, https://doi.org/10.1155/2018/9134547.
    Access Status
    Open Access
    URI
    http://hdl.handle.net/11343/253536
    DOI
    10.1155/2018/9134547
    Abstract
    Introduction. Stroke survivors use more energy than healthy people during activities such as walking, which has consequences for the way exercise is prescribed for stroke survivors. There is a need for wearable device that can validly measure energy expenditure (EE) of activity to inform exercise prescription early after stroke. We aimed to determine the validity and reliability of the SenseWear-Armband (SWA) to measure EE and step-counts during activity <1 month after stroke. Materials and Methods. EE was measured using the SWA and metabolic cart and steps-counts were measured using the SWA and direct observation. Based on walking ability, participants performed 2x six-minute walks or repeated sit-to-stands. Concurrent validity and test-retest reliability were determined by calculating intraclass and concordance correlation coefficients. Results and Discussion. Thirteen participants walked; nine performed sit-to-stands. Validity of the SWA measuring EE for both activities was poor (ICC/CCC < 0.40). The SWA overestimates EE during walking and underestimated EE during sit-to-stands. Test-retest agreement showed an ICC/CCC of <0.40 and >0.75 for walking and sit-to-stand, respectively. However, agreement levels changed with increasing EE levels (i.e., proportional bias). The SWA did not accurately measure step-counts. Conclusion. The SWA should be used with caution to measure EE of activity of mild to moderate stroke survivors <1 month after stroke.

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