Oeur, Anna

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Oeur, Anna
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Oeur, Anna

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  • Publication
    An examination of American football helmets using brain deformation metrics associated with concussion
    (Elsevier, 2013-03)
    Post, Andrew 
    ;
    Oeur, Anna 
    ;
    Hoshizaki, Thomas Blaine 
    ;
    et al. 
    The sport of American football is associated with a high incidence of concussion, which research has identified may lead to long term neurological damage. As a result, it is important that protective technologies be developed to help mitigate the incidence of this type of brain trauma. This research examines how the design characteristics between different American football helmet models affect the linear and rotational acceleration responses as well as brain deformation metrics using a centric/non-centric impacting protocol. The protocol involved impacting the helmets at nine centric/non-centric sites. Brain deformation metrics were calculated using the University College Dublin Brain Trauma Model. The results revealed that design characteristics do influence the brain deformation metrics associated with incidence of concussion. Further analysis revealed that rotational acceleration was more related to brain deformation metrics than linear acceleration. These results show that when attempting to reduce brain deformation metrics, the development of rotational acceleration diminishing technologies may be beneficial. This research indicates that helmet design may be able to reduce the risk of concussive injury.
      1578Scopus© Citations 55
  • Publication
    Examination of the relationship between peak linear and angular accelerations to brain deformation metrics in hockey helmet impacts
    (Informa UK (Taylor & Francis), 2013-05)
    Post, Andrew 
    ;
    Oeur, Anna 
    ;
    Hoshizaki, Thomas Blaine 
    ;
    et al. 
    Ice hockey is a contact sport which has a high incidence of brain injury. The current methods of evaluating protective devices use peak resultant linear acceleration as their pass/fail criteria, which are not fully representative of brain injuries as a whole. The purpose of this study was to examine how the linear and angular acceleration loading curves from a helmeted impact influence currently used brain deformation injury metrics. A helmeted Hybrid III headform was impacted in five centric and non-centric impact sites to elicit linear and angular acceleration responses. These responses were examined through the use of a brain model. The results indicated that when the helmet is examined using peak resultant linear acceleration alone, they are similar and protective, but when a 3D brain deformation response is used to examine the helmets, there are risks of brain injury with lower linear accelerations which would pass standard certifications for safety.
      781Scopus© Citations 58