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    Profiling of translational and rotational head accelerations in youth BMX with and without neck brace.

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    BMX Neck brace - Lee Rylands.pdf
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    Authors
    Hurst, Howard Thomas
    Rylands, Lee
    Atkins, Stephen
    Enright, Kevin
    Roberts, Simon J.
    Affiliation
    University of Central Lancashire
    University of Derby
    University of Salford
    Liverpool John Moores
    Issue Date
    2017-05-25
    
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    Abstract
    Objectives To investigate the influence of BMX helmets and neck braces on translational and rotational accelerations in youth riders. Design Mixed model, repeated measure and correlation. Methods Twenty three competitive youth BMX riders classified by age group (6–9 years, 10–13 years and 14–18 years) completed 6 laps of an indoor BMX track at race pace, 3 laps without a neck brace (NB) and 3 without brace (WB). A triaxial accelerometer with gyroscope was placed behind the right ear to determine the mean number of accelerations, translational and rotational, of the head between conditions and by age group. Results Significant reductions by condition (p = 0.02) and by age (p = 0.04) were found for the number of accelerations, though no interactions (condition × age) were revealed. Significant increases by age (p = 0.01) were revealed for translational accelerations, whilst significant increases by condition (p = 0.02) were found for rotational accelerations. In addition, significant correlations were revealed between relative helmet mass and age (r = 0.83; p = 0.001) and relative helmet mass and number of accelerations (r = 0.46; p = 0.03). Conclusions Accelerations at the head decreased with increased age, possibly due to the influence of greater stabilising musculature. Additionally, neck braces also significantly reduced the number of accelerations. However, the magnitude of accelerations may be influenced by riding dynamics. Therefore, the use of neck braces combined with strength work to develop neck strength, could aid in the reduction of head accelerations in youth BMX riders.
    Citation
    Hurst, H. T. et al (2018) 'Profiling of translational and rotational head accelerations in youth BMX with and without neck brace', Journal of Science and Medicine in Sport, 21 (3):263
    Publisher
    Elsevier
    Journal
    Journal of Science and Medicine in Sport
    URI
    http://hdl.handle.net/10545/622340
    DOI
    10.1016/j.jsams.2017.05.018
    Additional Links
    http://linkinghub.elsevier.com/retrieve/pii/S1440244017304449
    Type
    Article
    Language
    en
    ISSN
    14402440
    ae974a485f413a2113503eed53cd6c53
    10.1016/j.jsams.2017.05.018
    Scopus Count
    Collections
    School of Human Sciences

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