Skip to main content
Presentation
Repetitive Head Impacts Influence on the Postural Control System During the Course of a Single Athletic Season
South East Regional Meeting of the American College of Sports Medicine (2016)
  • Nicholas G Murray, Georgia Southern University
  • E. D. Shiflett, Georgia Southern University
  • B. A. Munkasy, Georgia Southern University
  • K Grimes, Georgia Southern University
  • K. M. Ake, Georgia Southern University
  • Nathan D’Amico, Georgia Southern University
  • Megan E. Mormile, Georgia Southern University
  • D. Powell, Campbell University
  • T. A. Buckley, University of Delaware
Abstract
PURPOSE: The purpose of this study was to investigate changes in the postural control system after a season of repetitive head impacts (RHI) in Division 1 football athletes. METHODS: Fourteen Division I football players (CON) (age = 20.4±1.12 years) and fourteen non-contact athletes (NON) (2 male, 11 female; age=19.85±1.21 years) completed a single trial of two minutes of quiet upright stance on a force platform (1000Hz) prior to athletic participation (PRE) and at the end of the athletic season (POST). All CON athletes wore helmets outfitted with Head Impact Telemetry (HIT) sensors and total number of RHI and linear accelerations forces of each RHI were recorded. Center of Pressure (CoP) Peak Excursion Velocity (PV), Sample Entropy (SampEn), in the anteroposterior (AP) and mediolateral (ML) directions, and 95% Confidence Ellipse (CE) were calculated at both PRE and POST. RESULTS: CON group experienced 649.5±496.8 mean number of impacts, 27.1±3.0 mean linear accelerations, with ≈1% of total player impacts exceeded 98g. Mixed model ANOVAs (2 groups x 2 assessment periods) revealed no significant interactions (p=0.499) at PRE (CON=0.54±0.14:NON=0.68±0.12) or POST (CON=0.56±0.12: NON=0.68±0.13) in SampEn AP direction. No significant interactions were observed for PV AP or ML directions, SampEn ML direction, and CE. CONCLUSIONS: Center of Pressure calculations are highly sensitive in determining postural instability during quiet upright stance immediately and longitudinally in post-concussed athletes. However, over the course of a single athletic contact season, RHI had little impact on the postural control system.
Keywords
  • Repetitive head impacts,
  • Postural control system,
  • Athletic season,
  • Division 1,
  • Football athletes
Publication Date
February, 2016
Location
Greenville, SC
Citation Information
Nicholas G Murray, E. D. Shiflett, B. A. Munkasy, K Grimes, et al.. "Repetitive Head Impacts Influence on the Postural Control System During the Course of a Single Athletic Season" South East Regional Meeting of the American College of Sports Medicine (2016)
Available at: http://works.bepress.com/nicholas-murray/41/