Is it possible to protect the adolescent brain with internal mechanisms from repetitive head impacts - Results from a Phase II Single Cohort, Longitudinal, Self-Control Study_FINAL (Logan et al., 2020).pdf (465.09 kB)
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Is it possible to protect the adolescent brain with internal mechanisms from repetitive head impacts: Results from a Phase II Single Cohort, Longitudinal, Self-Control Study

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posted on 28.04.2022, 15:48 authored by Kelsey Logan, Weihong Yuan, Kim D. Barber Foss, Jed Diekfuss, Christopher DiCesare, James Leach, Mekibib Altaye, Rhodri S. Lloyd, Gregory D. Myer

 Purpose: To quantify the effects of an externally worn collar device for mitigating the influence of repetitive head impacts on alterations to diffusion tensor imaging (DTI) metrics of white matter. Methods: Fifteen female high-school soccer athletes (age: 14.00-16.98 yrs) completed pre- and post-season DTI over two consecutive years, including measures of diffusivity, changes in which may be associated with brain dysfunction. The collar was worn during year 1 (Yr1) but not during year 2 (Yr2). Athlete exposures (AEs) and head impact exposure were recorded over the competitive seasons. Results: There were no significant differences in AEs or head impact exposures between Yr1 and Yr2 (p >0.05). In Yr2, there was significant pre- to post-season mean diffusivity and/or axial diffusivity reduction in multiple WM regions (corrected p< 0.05). Pre- to post-season mean diffusivity, axial diffusivity, and radial diffusivity decreases were 3.04 ± 2.53%, 2.97 ± 2.194%, and 3.37 ± 3.34%, respectively, significantly greater than pre- to post-season changes in Yr1 (mean diffusivity: -0.31 ± 1.78%, p = 0.0014; axial diffusivity: -0.02 ± 2.25%. p = 0.0014; radial diffusivity: -0.63 ± 2.10%, p = 0.0030). Conclusions: Mild bilateral compression to athletes’ internal jugular vein through collar application may have increased intracranial blood volume and spatially redistributed head-impact-derived brain energy absorption. However, future research is needed to elucidate the potential clinical significance of WM changes of various degrees. 

Funding

The Heidt Family Foundation, Robert S. Heidt, Sr. – Wellington Foundation and Q30 Sports Innovations, LLC

History

Published in

Journal of Science in Sport and Exercise

Publisher

Springer

Version

AM (Accepted Manuscript)

Citation

Logan, K., Yuan, W., Foss, K.D.B., Diekfuss, J.A., DiCesare, C.A., Leach, J., Altaye, M., Lloyd, R.S. and Myer, G.D. (2021) 'Is it possible to protect the adolescent brain with internal mechanisms from repetitive head impacts: Results from a Phase II Single Cohort, Longitudinal, Self-Control Study', Journal of Science in Sport and Exercise, 3(1), pp.56-65

Electronic ISSN

2662-1371

Cardiff Met Affiliation

  • Cardiff School of Sport and Health Sciences

Cardiff Met Authors

Rhodri S. Lloyd

Cardiff Met Research Centre/Group

  • Youth Physical Development

Copyright Holder

© The Publisher

Language

en

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