A5052371758- Traumatic Brain Injury Research
- Functional Brain Connectivity Studies
- Injury Epidemiology and Prevention
- Cardiac Arrest and Resuscitation
- Automotive and Human Injury Biomechanics
- Sports injuries and prevention
- Child and Adolescent Psychosocial and Emotional Development
- Dementia and Cognitive Impairment Research
- Resilience and Mental Health
- Meta-analysis and systematic reviews
- Traumatic Brain Injury and Neurovascular Disturbances
- Memory and Neural Mechanisms
- Advanced Neuroimaging Techniques and Applications
- Child and Adolescent Health
- Health Policy Implementation Science
- Health, Environment, Cognitive Aging
- Sport Psychology and Performance
- Community Health and Development
- Musculoskeletal pain and rehabilitation
- Neural dynamics and brain function
- Radiation Dose and Imaging
- Foot and Ankle Surgery
- EEG and Brain-Computer Interfaces
- Adolescent and Pediatric Healthcare
- Cerebral Palsy and Movement Disorders
University of Nebraska–Lincoln
2015-2024
Saint Anselm College
2023
Dartmouth–Hitchcock Medical Center
2005-2023
Nebraska Hematology-Oncology
2020
Nebraska Medical Center
2020
Dartmouth College
2004-2014
University of California, San Diego
2013-2014
Simbex (United States)
2013
Dartmouth Psychiatric Research Center
2011-2013
Edward Via College of Osteopathic Medicine
2012
Abstract Recent research has suggested a possible link between sports-related concussions and neurodegenerative processes, highlighting the importance of developing methods to accurately quantify head impact tolerance. The use kinematic parameters predict brain injury been because they are indicative inertial response brain. objective this study is characterize rotational kinematics associated with concussive impacts using large acceleration dataset collected from human subjects. helmets 335...
To determine whether exposure to repetitive head impacts over a single season affects white matter diffusion measures in collegiate contact sport athletes.A prospective cohort study at Division I NCAA athletic program of 80 nonconcussed varsity football and ice hockey players who wore instrumented helmets that recorded the acceleration-time history following impact, 79 non-contact athletes. Assessment occurred preseason shortly after with tensor imaging neurocognitive measures.There was...
<h3>Objective:</h3> To determine whether exposure to repetitive head impacts over a single season negatively affects cognitive performance in collegiate contact sport athletes. <h3>Methods:</h3> This is prospective cohort study at 3 Division I National Collegiate Athletic Association athletic programs. Participants were 214 college varsity football and ice hockey players who wore instrumented helmets that recorded the acceleration-time history of following impact, 45 noncontact All athletes...
Concussive head injuries have received much attention in the medical and public arenas, as concerns been raised about potential short- long-term consequences of sustained sports other activities. While many student athletes required evaluation after concussion, exact definition concussion has varied among disciplines over time. The authors used data gathered part a multiinstitutional longitudinal study biomechanics impacts helmeted collegiate to characterize what signs, symptoms, clinical...
Of all sports, football accounts for the highest incidence of concussion in US due to large number athletes participating and nature sport. While there is general agreement that can be reduced through rule changes teaching proper tackling technique, remains debate as whether helmet design may also reduce concussion. A retrospective analysis was performed head impact data collected from 1833 collegiate players who were instrumented with helmet-mounted accelerometer arrays games practices....
Although computerized neuropsychological screening is becoming a standard for sports concussion identification and management, convergent validity studies are limited. Such important several reasons: reference to established measures needed establish validity; examination of the battery relative more traditional comprehensive will help understand strengths limitations computer battery; such an inform output battery. We compared scores on ImPACT™ experimental used in assessment sports-related...
Purpose This study aimed to quantify the frequency, magnitude, and location of head impacts sustained by male female collegiate ice hockey players during two seasons play. Methods During seasons, 88 athletes (51 females, 37 males) on National Collegiate Athletic Association varsity teams wore instrumented helmets. Each helmet was equipped with six single-axis accelerometers a miniature data acquisition system capture record Data collected from helmets were postprocessed compute linear...
Although no data exist, general practice recommends only rest following concussion. This randomized clinical trial found that programmed physical exertion during recovery produced significant differences in time between groups of participants. However, high levels were deleterious. study provides initial evidence moderate activity is a safe replacement behavior recovery.
Physical differences between youth and adults, which include incomplete myelination, limited neck muscle development, a higher head-body ratio in the population, likely contribute towards increased susceptibility of to concussion. Previous research efforts have considered biomechanics concussion for adult populations, but these known age-related highlight necessity quantifying risk population. This study adapted previously developed Generalized Acceleration Model Brian Injury Threshold...
Chronic ankle instability (CAI) is characterized by repetitive sprains and perceived instability. Whereas the underlying cause of CAI disputed, alterations in cortical motor functioning may contribute to dysfunction.To assess differences activity during single-limb stance among control, coper, groups.Cross-sectional study.Biomechanics laboratory.A total 31 individuals (10 men, 21 women; age = 22.3 ± 2.4 years, height 169.6 9.7 cm, mass 70.6 11.6 kg), who were classified into control (n 13),...
We present the initial validation of a two-factor structure Immediate Post-Concussion Assessment and Cognitive Testing (ImPACT) using ImPACT composite scores document reliability validity this factor structure. Factor analyses were conducted for baseline (N = 21,537) post-concussion 560) data, yielding "Memory" (Verbal Visual) "Speed" (Visual Motor Speed Reaction Time) Factors; inclusion Total Symptom Scores resulted in third discrete factor. Memory z-scores calculated, test–retest (using...
The Immediate Post-Concussion Assessment and Cognitive Testing (ImPACT) is a computerized neuropsychological test battery commonly used to assess cognitive functioning after concussion. It recommended that application of ImPACT utilizes baseline administration so athletes have an individualized with which compare post-injury results should they sustain has been suggested may provide suboptimal effort, called "sandbagging," in order return their scores, thus play, more quickly. This research...
In a previous analysis of ImPACT scores relative to traditional neuropsychological tests (NP) and experimental tasks (Maerlender et al., Citation2010) we demonstrated convergent construct validity for the primary test-score composites. A complete discriminant was not undertaken at that time. Here, test from 54 collegiate football hockey players were re-analyzed specifically address ImPACT™ composite using multiply operationalized correlation matrix multi-trait multi-method data. method used...
We sought to investigate the one-week and within-session reliability of instrumented balance error scoring system test concurrent validity/one-week two neurocognitive assessments available through C3 Logix. (n = 37) Participants completed tests separated by Trails A, B, Symbol Digit Modality Logix, with paper pencil. found that demonstrated strong neuropsychological Logix show acceptable validity standard (comparable) pencil measures.
Concussions present with a myriad of symptomatic and cognitive concerns; however, the relationship between these functional disruptions underlying changes in brain are not yet well understood. Hubs, or regions that connected to many different networks, may be specifically disrupted after concussion. Given implications concussion research, we quantified hub disruption within default mode network (DMN) DMN other networks. We collected resting-state magnetic resonance imaging data from...
Abstract The Global Assessment of School Functioning (GASF) provides a robust estimate student's overall level functioning within the school environment. It is intended to capture global metric reflecting academic, social and general behavioral school. modification reflects across academics, interpersonal relationships, behavior, participation. was developed allow personnel means communicate student without reverting specific issues or immediate concerns. This paper reports on scale's...