English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

Objective  To determine the association of repetitive sub-concussive head impacts with neurocognitive outcomes in primary school and high school tackle football players.    Methods  We conducted a prospective cohort study of 35 primary school players age 9–12 and 20 high school players age 15–18 who each participated in 2 consecutive seasons of tackle football from 2016 to 2017. Helmet-based sensors were used to record head impacts during contact practices and games, which were summed as a cumulative impact for the 2 football seasons. Players were also divided into high intensity and low intensity groups based on whether they sustained high g-force impacts in both seasons. Players completed assessments on a variety of outcomes before the 2016 season and after the 2017 season: neuropsychological test performance, symptom ratings, vestibular-ocular function, balance, parent-completed ADHD symptoms, and self-reported behavioral adjustment.    Results  Average cumulative impact was 6,920 (SD 4,553) g-forces combined for the 2 seasons and did not differ between age groups ( p  = 0.66). Twenty-one players (38%) were classified as high intensity based on individual impacts. After correcting for multiple comparisons, neither cumulative impact nor impact intensity predicted change scores from pre-2016 season to post-2017 season on any outcome measures. Instead, younger age group and history of ADHD predicted worse change scores on several cognitive measures and ADHD symptom reporting.    Conclusions  Over 2 consecutive seasons of primary and high school tackle football participation, cumulative head impact burden and intensity of impacts were not found to be associated with changes in cognition, balance, vestibular-ocular function, or behavioral adjustment.

Head impact burden and change in neurocognitive function over 2 seasons of youth football participation