Medical Specialties Commons^™

Models Of Video Feedback For Youth Athletes Performing An American Football Tackle, Eric Schussler, Richard J. Jagacinski, Ajit Chaudhari, John A. Buford, James A. Onate

Rehabilitation Sciences Faculty Publications

Context: Video feedback is an expeditious method for improving athlete safety when performing activities with an inherent risk of injury. Providing appropriate and validated feedback during tackling training in American football may be a mechanism for athletes to learn safe tackling performance.

Objective: To determine the effect of video feedback in the instruction of tackling form.

Design: Controlled laboratory study.

Setting: Laboratory.

Patients or Other Participants: A total of 32 youth football athletes (28 boys, 4 girls; age ¼ 11.8 6 0.8 years) participated in 1 day of training. Of those, 14 participants completed 2 additional days of training and …

A Systematic Review Of Center Of Mass As A Measure Of Dynamic Postural Control Following Concussion, Sarah Patejak, Joshua Forrest, Emily Harting, Mable Sisk, Eric Schussler

Rehabilitation Sciences Faculty Publications

BACKGROUND: The incidence of sports-related concussion in the US is between 1.6-3.8 million annually. Identification of ongoing impairment post-concussion continues to be challenging, as research indicates many patients are cleared for return to activity while still suffering subclinical impairment of function. Purpose: To identify and review the current literature on the use of center of mass (COM) during gait as a potential indicator variable after concussive injury. Study Design: Systematic Review.

METHODS: A Pubmed search was undertaken utilizing search terms involving gait performance and concussion. Study inclusion criteria included: (1) COM used as a variable in data analysis, (2) study …

Understanding And Identifying The Knowledge And Attitudes Of High School Coaches On Sport-Related Concussions, Marc A. Mortellaro

Seton Hall University Dissertations and Theses (ETDs)

Background and Purpose of the Study: Sport-related concussions are a major public health issue, particularly so in the setting of sports. Sports dominate American culture and with millions of athletes of all ages participating in these sports these athletes predispose themselves to the risks of sport-related concussions. High-school athletes are of particular interest because of the heightened risks of long-term consequences and of particular note second impact syndrome, which is a catastrophic injury primarily reported in the adolescent aged athlete. Appropriate concussion assessment and management is necessary for reducing the possibility of these long- term effects of concussions. Properly trained …

Inter-Rater Agreement And Validity Of A Tackling Performance Assessment Scale In Youth American Football, Eric Schussler, Richard J. Jagacinski, Susan E. White, Ajit M. Chaudhari, John A. Buford, James A. Onate

Rehabilitation Sciences Faculty Publications

Background: Long term neurologic injury and concussion have been identified as risks from participation in American football. Altering tackling form has been recommended to reduce the risk of neurologic injury caused by head accelerations when tackling. The purpose of this research is to determine the inter-rater agreement and validity of the Qualitative Youth Tackling System (QYTS), a six-item feedback scale to correct tackling form, when utilized by novice and expert raters.

Hypothesis: Experienced raters will have higher levels of agreement with each other and with motion capture when compared to novice raters. Methods: Both novice and experienced raters viewed video …

Comparison Of A Head Mounted Impact Measurement Device To The Hybrid Iii Anthropomorphic Testing Device In A Controlled Laboratory Setting, Eric Schussler, David Stark, John H. Bolte, Yun Seok Kang, James A. Onate

Rehabilitation Sciences Faculty Publications

Background: Reports estimate that 1.6 to 3.8 million cases of concussion occur in sports and recreation each year in the United States. Despite continued efforts to reduce the occurrence of concussion, the rate of diagnosis continues to increase. The mechanisms of concussion are thought to involve linear and rotational head accelerations and velocities. One method of quantifying the kinematics experienced during sport participation is to place measurement devices into the athlete’s helmet or directly on the athlete’s head.

Purpose: The purpose of this research to determine the accuracy of a head mounted device for measuring the head accelerations experienced by …

Head Impact Exposure In Male And Female Collegiate Ice Hockey Players, Bethany J. Wilcox, Jonathan G. Beckwith, Richard M. Greenwald, Jeffrey J. Chu, Thomas W. Mcallister, Laura A. Flashman, Arthur C. Maerlender, Ann-Christine Duhaime, Joseph J. Crisco

Department of Psychology: Faculty Publications

The purpose of this study was to quantify head impact exposure (frequency, location and magnitude of head impacts) for individual male and female collegiate ice hockey players and to investigate differences in exposure by sex, player position, session type, and team. Ninety-nine (41 male, 58 female) players were enrolled and 37,411 impacts were recorded over three seasons. Frequency of impacts varied significantly by sex (males: 287 per season, females: 170, p < 0.001) and helmet impact location (p < 0.001) but not by player position (p = 0.088). Head impact frequency also varied by session type; both male and female players sustained more impacts in games than in practices (p < 0.001), however the magnitude of impacts did not differ between session types. There was no difference in 95th percentile peak linear acceleration between sexes (males: 41.6 g, females: 40.8 g), but 95th percentile peak rotational acceleration and HITsp (a composite severity measure) were greater for males than females (4424, 3409 rad/s2, and 25.6, 22.3, respectively). Impacts to the back of the helmet resulted in the greatest 95th percentile peak linear accelerations for males (45.2 g) and females (50.4 g), while impacts to the side and back of the head were associated with the greatest 95th percentile peak rotational accelerations (males: 4719, 4256 rad/sec², females: 3567, 3784 rad/sec², respectively). It has been proposed that reducing an individual’s head impact exposure is a practical approach for reducing the risk of …

History Of Concussion Research In American Football, Timothy Hersey

Honors Theses

Concussions have been the topic of discussion in the news and media in recent years for their profound impact on today’s sport industry. Athletes have become bigger, faster, and stronger then in the past, increasing the chance of injury. This can been seen in all sports. Contact sports specifically have seen a rise in mild traumatic brain injuries (MTBIs) over the years. Extensive research has been done to determine the causes of concussion, the short and long term effects of brain injury, and better ways to reduce the risk in sports. Concussion research in athletics has mainly focused on American …