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Abstract OBJECTIVE The relationship between athlete reports of symptoms, neurophysiological activation, and neuropsychological functioning is investigated in a sample of high school athletes. METHODS All athletes were evaluated using functional magnetic resonance imaging (fMRI), a computer-based battery of neurocognitive tests, and a subjective symptom scale. Athletes were evaluated within approximately 1 week of injury and again after clinical recovery using all assessment modalities. RESULTS This study found that abnormal fMRI results during the first week of recovery predicted clinical recovery. As a group, athletes who demonstrated hyperactivation on fMRI scans at the time of their first fMRI scan demonstrated a more prolonged clinical recovery than athletes who did not demonstrate hyperactivation at the time of their first fMRI scan. CONCLUSION These results demonstrate the relationship between neurophysiological, neuropsychological, and subjective symptom data in a relatively large sample composed primarily of concussed high school athletes. fMRI represents an important evolving technology for the understanding of brain recovery after concussion and may help shape return-to-play guidelines in the future.

Background: Concussion baseline assessments are often administered during the pre-season of sports. Current recommendations suggest that baseline assessments may be useful in aiding and interpreting post-injury evaluations but are not necessary. However, it has become common practice for athletic trainers (ATs) to administer and implement baseline assessments in athletes. Hypothesis/Purpose: The purpose was to determine K-12 ATs’ current concussion baseline assessment practice patterns. Methods: A Qualtrics survey was designed and implemented to 443 ATs (193 males, 244 females, 5 prefer not to answer, n=1 missing). Most respondents had earned a master’s degree (n=288, 65.0%), and were employed full-time (n=381,86.4%). Respondents were solicited over email to complete the survey which consisted of multipart, multiple-choice, and open-ended questions. Responses are reported as frequencies and percentages. Chi-square analysis was run to determine group (years of experience) and baseline practice patterns, p<0.05. Results: Seventy-five percent of respondents (n=330) reported administering baseline concussion assessments, with 37 (8.4%) reporting they do not administer baseline assessments but plan to in the future. The top five most reported assessment tools used were ImPACT (n=245, 55.3%), SCAT 5 (n=59, 13.3%), CNS Vital signs (n=25, 5.6%), BESS (n=25, 5.6%), and VOMS (n=22, 5.0%). The majority of respondents reported standard of care (n=226, 51%), provide better care (n=202, 45.6%%), school/organization policy (n=197,44.5%), to help diagnose concussion (n=139, 31.4%), concussion education (n=117, 26.4%), and liability (n=101, 22.8%), as the top reasons for using concussion baseline assessments. No differences were found between ATs with less than 10 years of experience, 11-20 years of experience, or 21+ years of experience in having formal training on administration of baseline assessments (p=.164), or having received formal training on interpretation of baseline assessments (p=.104). However, differences were noted by years of experience for reviewing baseline assessments for validity 2= 8.68, p=.013, and for those who restrict testing when individuals are sleep deprived 2=10.06 p=0.039. The majority reported receiving formal training to administer (n=209, 66.8%) and to interpret (n=178, 56.9%) neurocognitive baseline assessment. The majority of respondents report feeling extremely comfortable (n=214, 69%) and extremely competent (n=205, 65.9) in administering neurocognitive assessments, and moderately comfortable (n=117, 38.2%) and moderately competent (n=137, 45.1%) in test interpretation. Conclusion: The majority of ATs reported administering baseline concussion assessments and felt comfortable and competent in the administration and interpretation of assessments in adolescent athletes. Most ATs reported standard of care and providing better care as reasons for implementing assessments.

Abstract BACKGROUND: The severity of sports-related concussion is often characterized by the number and severity of postconcussive symptoms (eg, headache, dizziness, difficulty concentrating). Although the level of postconcussive symptoms after injury is believed to index the severity of the neurological insult sustained, studies examining the relationship between symptom severity and neural functioning in concussed athletes remain rare. OBJECTIVE: This exploratory study examined the association between self-reported symptom severity and functional activation on a working memory task in a group of 16 recently concussed student athletes. METHODS: Functional magnetic resonance imaging was used to examine the relationship of symptom severity to brain activation during a working memory task in 16 concussed subjects. RESULTS: Findings indicated that symptom severity was associated with regionally specific hyperactivation during a working memory task, even though symptom severity was not significantly related to task accuracy. CONCLUSION: The results add to a growing body of literature that demonstrates that functional neuroimaging may have the potential to serve as a sensitive biomarker of the severity of concussion and mild traumatic brain injury.

ObjectiveTo understand concussion education patterns among K-12 schoolsDesignCross-sectionalSettingOnline surveyParticipants465 survey responses were collected, with 442 athletic trainers included in the study (193 males, n= 243 females, n=5 prefer not to answer, n=1 missing) from 47 states. Participants were solicited over email to complete the survey which consisted of multipart, multiple-choice, and open-ended questions.Outcome MeasuresResponses are reported as frequencies and percentages.Main ResultsMost respondents indicated athletes receive concussion education annually (n=399, 92.1%). with informational handouts (n=286), in-person education lecture from AT/coach (n=212), education video (n=135), computerized modules (n=51), and peer-to-peer education (n=43) as the most common types of education delivered to athletes. Respondents reported 80% (n=345) of parents receive concussion education annually, with informational handouts (n=284), in person education lecture (n=122), educational videos (n=89), and computerized modules (n=29) used most frequently. Respondents reported over 95% (n=411) of coaches receive concussion education annually with educational videos (n=299), computerized modules (n=211), informational handouts (n=165), peer-to-peer (n=66), and in person lectures (n=66) most commonly provided. Overall, respondents reported athletes (N=209, 53.3%) and parents (n=194, 57.7%) received one hour of concussion education annually, while coaches received two or fewer hours of education per year (n=308, 75.3%)ConclusionAthletes, parents, and coaches are receiving at least one hour of concussion education annually. However, the effectiveness, efficiency, and accuracy of this education is unknown. Future research should explore the benefits of concussion education and its impact on intention-to-report concussion.

ObjectivesTo systematically review the scientific literature regarding the acute assessment of sport-related concussion (SRC) and provide recommendations for improving the Sport Concussion Assessment Tool (SCAT6).Data sourcesSystematic searches of seven databases from 2001 to 2022 using key words and controlled vocabulary relevant to concussion, sports, SCAT, and acute evaluation.Eligibility criteria(1) Original research articles, cohort studies, case–control studies, and case series with a sample of >10; (2) ≥80% SRC; and (3) studies using a screening tool/technology to assess SRC acutely (<7 days), and/or studies containing psychometric/normative data for common tools used to assess SRC.Data extractionSeparate reviews were conducted involving six subdomains: Cognition, Balance/Postural Stability, Oculomotor/Cervical/Vestibular, Emerging Technologies, and Neurological Examination/Autonomic Dysfunction. Paediatric/Child studies were included in each subdomain. Risk of Bias and study quality were rated by coauthors using a modified SIGN (Scottish Intercollegiate Guidelines Network) tool.ResultsOut of 12 192 articles screened, 612 were included (189 normative data and 423 SRC assessment studies). Of these, 183 focused on cognition, 126 balance/postural stability, 76 oculomotor/cervical/vestibular, 142 emerging technologies, 13 neurological examination/autonomic dysfunction, and 23 paediatric/child SCAT. The SCAT discriminates between concussed and non-concussed athletes within 72 hours of injury with diminishing utility up to 7 days post injury. Ceiling effects were apparent on the 5-word list learning and concentration subtests. More challenging tests, including the 10-word list, were recommended. Test–retest data revealed limitations in temporal stability. Studies primarily originated in North America with scant data on children.ConclusionSupport exists for using the SCAT within the acute phase of injury. Maximal utility occurs within the first 72 hours and then diminishes up to 7 days after injury. The SCAT has limited utility as a return to play tool beyond 7 days. Empirical data are limited in pre-adolescents, women, sport type, geographical and culturally diverse populations and para athletes.PROSPERO registration numberCRD42020154787.

Background: The Generalized Anxiety Disorder scale (GAD-7) and Patient Health Questionnaire (PHQ-9) are mental health screening instruments that assess symptoms of depression and anxiety. Studies of patients with concussion suggest that history of mental illness is associated with prolonged recovery; however, little research has examined the value of these tools in a concussed pediatric population (Iverson et al., 2017). Hypothesis/Purpose: The purpose of this study was to explore the relation between anxiety and depression symptoms, mental illness history, sex, and time to recover in a concussed pediatric population. We hypothesized that mental health symptoms and history, and female sex would predict longer recoveries in the pediatric population. Methods: IRB-approved retrospective chart review was used for data collection. Demographics, self-reported mental health history, GAD-7, and PHQ-9 scores were acquired for 250 adolescents ages 12-18 (45.2% female) who presented to an outpatient concussion clinic for their initial visit. Days to recover was imputed for all patients who had been discharged by clinic physicians based on international return to play standards. Results: Mann-Whitney U tests were used for analysis of this nonnormally distributed data. Males were found to recover more quickly than females (female median = 15 days, IQR 7-27; male median = 12 days, IQR 6-23; p=.013). No significant differences were observed in days to clearance based on reported history of mental health disorder (p=.066). Individuals who scored above cutoff (see Kroenke et al., 2001; Spitzer et al., 2006) on the GAD-7 (below cutoff median = 12.00 days; above cutoff median = 21.00 days) and PHQ-9 (below cutoff median = 23.5 days; above cutoff median = 57.00 days) required longer recovery times (p <.001). Conclusion: We found longer recovery times in females versus males, and in those whose scores fell above cutoff for the PHQ-9 and GAD-7 at their initial clinic visit. Although a trend existed, there were no significant differences in recovery time for those who reported a mental health history compared to those who did not. Results suggest that the GAD-7 and PHQ-9 may be useful screening measures in a concussion clinic and may provide additional insight into potential recovery times for pediatric patients.

Background: Both sleep disturbance and mood changes are common symptoms post-concussion (Sell & Rubeor, 2017). Studies have found these symptoms are correlated with poorer performance on neurocognitive testing (Kontos et al., 2012 and Kostyun et al., 2015). In addition, Brown et al., (2015) showed that females report more symptoms at both baseline and post-concussion compared to males on the Post-Concussion Scale and the Sport Concussion Assessment Tool 2. Hypothesis/Purpose: The purpose of this study is to investigate how a patient’s sex, as well as self-reported acute mood and sleep symptoms are related to neurocognitive performance in individuals with concussion. Methods: Data were acquired through IRB-approved retrospective chart review. Composite scores from the Immediate Post-Concussion Assessment and Cognitive Testing (ImPACT) computerized evaluation and self-reported symptom scores on the Post-Concussion Symptom Scale were gathered for 1619 adolescents age 12-18 (49.3% female) who presented to a large metropolitan outpatient clinic for treatment of concussion. Results: Females endorsed higher overall symptoms (x=19.52, SD 19.37, median 13.0 for females; x=12.88, SD 15.89, median 7.0 for males; Mann-Whitney U Test p<0.001). This same pattern emerged for the mood and sleep symptom clusters (female mood mean=2.92, SD 4.51; male mood mean=1.64, SD 3.34; female sleep mean=1.59, SD 2.0; male sleep mean=1.11, SD 1.84; both Independent Samples Mann-Whitney U Tests ps<0.001). There were significant but modest negative correlations between mood symptoms and performance on verbal memory (r=-0.174), visual memory (r=-0.213), and visual motor speed (r=-0.146) composites (all ps<0.01). There was positive correlation between reaction time composite and mood symptoms (r=0.191). There were significant but modest negative correlations between sleep symptoms and performance on verbal memory (r=-0.171), visual memory (r=-0.184), and visual motor speed (r=-0.161) composites (all ps<0.01). There was a positive correlation between reaction time composite and sleep symptoms (r=0.196, p<0.01). Conclusion: Consistent with prior research, adolescent females reported more symptoms post-concussion, including total symptom score, mood symptoms, and sleep symptoms. Adolescents presenting with more mood and sleep symptoms demonstrated poorer performance on neurocognitive testing. However, given the modest nature of the correlation, a significant amount of variation in test performance is not explained by symptom report. Results from this study underscore the importance of a multidimensional concussion assessment that includes both symptom report and cognitive testing when working with pediatric athletes. This study also reinforces the importance of understanding potential effects of sleep, mood, and sex on concussion.