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    Validity of Accelerometry to Measure Physical Activity Intensity in Children with an Acquired Brain Injury

    Access Status
    Fulltext not available
    Authors
    Baque, E.
    Sakzewski, L.
    Trost, S.
    Boyd, Roslyn
    Barber, L.
    Date
    2017
    Type
    Journal Article
    
    Metadata
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    Citation
    Baque, E. and Sakzewski, L. and Trost, S. and Boyd, R. and Barber, L. 2017. Validity of Accelerometry to Measure Physical Activity Intensity in Children with an Acquired Brain Injury. Pediatric Physical Therapy. 29 (4): pp. 322-329.
    Source Title
    Pediatric Physical Therapy
    DOI
    10.1097/PEP.0000000000000439
    ISSN
    0898-5669
    School
    School of Occupational Therapy and Social Work
    URI
    http://hdl.handle.net/20.500.11937/57302
    Collection
    • Curtin Research Publications
    Abstract

    © 2017 Wolters Kluwer Health, Inc. and Academy of Pediatric Physical Therapy of the American Physical Therapy Association. Purpose: To evaluate the validity of the ActiGraph accelerometer (AG) to differentiate between standardized, physical activity tasks using oxygen consumption (o 2) as the criterion measure in children and adolescents with an acquired brain injury; to determine vector magnitude activity intensity cut-points; to compare performance of cut-points to previously published cut-points. Methods: Twenty-seven children performed standardized walking and stepping activities wearing a portable indirect calorimeter, AG, and heart rate monitor. Differences in o 2 and AG vector magnitude activity counts were measured during activities. Receiver operating characteristic curves were determined for intensity cut-points. Results: o 2 and AG activity counts significantly increased as walking speed increased. Discrimination of the newly derived cut-points was excellent and demonstrated greater agreement compared with the previously published cut-points. Conclusion: Output from accelerometers can differentiate physical activity intensity in children with an acquired brain injury. Future studies can apply these cut-points to evaluate physical activity performance.

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