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    Field based reliability and validity of the Bioharness (TM) multivariable monitoring device

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    Authors
    Johnstone, James A.
    Ford, Paul A.
    Hughes, Gerwyn T.G.
    Watson, Tim
    Mitchell, Andrew C.S.
    Garrett, Andrew T.
    Affiliation
    University of Hertfordshire
    University of Hull
    British Olympic Association
    Issue Date
    2012-12-01
    Subjects
    physiological monitoring
    multi-variable
    new technology
    ecological validity
    C600 Sports Science
    sports science
    
    Metadata
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    Abstract
    The Bioharness (TM) device is designed for monitoring physiological variables in free-living situations but has only been proven to be reliable and valid in a laboratory environment. Therefore, this study aimed to determine the reliability and validity of the Bioharness (TM) using a field based protocol. Twenty healthy males participated. Heart rate (HR), breathing frequency (BF) and accelerometry (ACC) were assessed by simultaneous measurement of two Bioharness (TM) devices and a test-retest of a discontinuous incremental walk-jog-run protocol (4 -11 km.h(-1)) completed in a sports hall. Adopted precision of measurement devices were; HR: Polar T31 (Polar Electro), BF: Spirometer (Cortex Metalyser), ACC: Oxygen expenditure (Cortex Metalyser). For all data, precision of measurement reported good relationships (r = 0.61 to 0.67, p < 0.01) and large Limits of Agreement for HR (>79.2 b.min(-1)) and BF (>54.7 br.min(-1)). ACC presented excellent precision (r = 0.94, p < 0.01). Results for HR (r = similar to 0.91, p < 0.01: CV < 7.6) and ACC (r > 0.97, p < 0.01; CV <14.7) suggested these variables are reliable. BF presented more variable data (r = 0.46-0.61, p < 0.01; CV < 23.7). As velocity of movement increased (> 8 km.h(-1)) data became more erroneous. A data cleaning protocol removed gross errors in the data analysis and subsequent reliability and validity statistics improved across all variables. In conclusion, the Bioharness (TM) HR and ACC variables have demonstrated reliability and validity in a field setting, though data collected at higher velocities should be treated with caution. Measuring human physiological responses in a field based environment allows for more ecologically valid data to be collected and devices such as the Bioharness (TM) could be used by exercise professionals to begin to further investigate this area.
    Citation
    Johnstone JA, Ford PA, Hughes G, Watson T, Mitchell ACS, Garrett AT (2012) 'Field based reliability and validity of the Bioharness (TM) multivariable monitoring device', Journal of Sports Science and Medicine, 11 (4), pp.643-652.
    Publisher
    JOURNAL SPORTS SCIENCE & MEDICINE
    Journal
    Journal of Sports Science and Medicine
    URI
    http://hdl.handle.net/10547/622877
    PubMed ID
    24150074
    PubMed Central ID
    PMC3763310
    Additional Links
    https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3763310/
    Type
    Article
    Language
    en
    ISSN
    1303-2968
    Collections
    Sport and physical activity

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