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Beard K, Gauff AK, Pennington AM, Marion DW, Smith J, Sloley S. Biofluid, Imaging, Physiological, and Functional Biomarkers of Mild Traumatic Brain Injury and Subconcussive Head Impacts. J Neurotrauma 2024. [PMID: 38943278 DOI: 10.1089/neu.2024.0136] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/01/2024] Open
Abstract
Post-concussive symptoms are frequently reported by individuals who sustain mild traumatic brain injuries (mTBIs) and subconcussive head impacts, even when evidence of intracranial pathology is lacking. Current strategies used to evaluate head injuries, which primarily rely on self-report, have a limited ability to predict the incidence, severity, and duration of post-concussive symptoms that will develop in an individual patient. In addition, these self-report measures have little association with the underlying mechanisms of pathology that may contribute to persisting symptoms, impeding advancement in precision treatment for TBI. Emerging evidence suggests that biofluid, imaging, physiological, and functional biomarkers associated with mTBI and subconcussive head impacts may address these shortcomings by providing more objective measures of injury severity and underlying pathology. Interest in the use of biomarker data has rapidly accelerated, which is reflected by the recent efforts of organizations such as the National Institute of Neurological Disorders and Stroke and the National Academies of Sciences, Engineering, and Medicine to prioritize the collection of biomarker data during TBI characterization in acute-care settings. Thus, this review aims to describe recent progress in the identification and development of biomarkers of mTBI and subconcussive head impacts and to discuss important considerations for the implementation of these biomarkers in clinical practice.
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Affiliation(s)
- Kryshawna Beard
- General Dynamics Information Technology Fairfax, Falls Church, Virginia, USA
- Traumatic Brain Injury Center of Excellence, Silver Spring, Maryland, USA
| | - Amina K Gauff
- Traumatic Brain Injury Center of Excellence, Silver Spring, Maryland, USA
- Xynergie Federal, LLC, San Juan, United States Minor Outlying Islands
| | - Ashley M Pennington
- Traumatic Brain Injury Center of Excellence, Silver Spring, Maryland, USA
- Xynergie Federal, LLC, San Juan, United States Minor Outlying Islands
| | - Donald W Marion
- General Dynamics Information Technology Fairfax, Falls Church, Virginia, USA
- Traumatic Brain Injury Center of Excellence, Silver Spring, Maryland, USA
| | - Johanna Smith
- Traumatic Brain Injury Center of Excellence, Silver Spring, Maryland, USA
| | - Stephanie Sloley
- Traumatic Brain Injury Center of Excellence, Silver Spring, Maryland, USA
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Reuter-Rice K, Fitterer AN, Duquette P, Yang Q, Palipana AK, Laskowitz D, Garrett ME, Fletcher M, Smith J, Makor L, Grant G, Ramsey K, Bloom OJ, Ashley-Koch AE. A study protocol for risk stratification in children with concussion (RSiCC): Theoretical framework, design, and methods. PLoS One 2024; 19:e0306399. [PMID: 39024215 PMCID: PMC11257289 DOI: 10.1371/journal.pone.0306399] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2024] [Accepted: 06/14/2024] [Indexed: 07/20/2024] Open
Abstract
Research shows that one in five children will experience a concussion by age 16. Compared to adults, children experience longer and more severe postconcussive symptoms (PCS), with severity and duration varying considerably among children and complicating management of these patients. Persistent PCS can result in increased school absenteeism, social isolation, and psychological distress. Although early PCS diagnosis and access to evidence-based interventions are strongly linked to positive health and academic outcomes, symptom severity and duration are not fully explained by acute post-injury symptoms. Prior research has focused on the role of neuroinflammation in mediating PCS and associated fatigue; however relationship between inflammatory biomarkers and PCS severity, has not examined longitudinally. To identify which children are at high risk for persistent PCS and poor health, academic, and social outcomes, research tracking PCS trajectories and describing school-based impacts across the entire first year postinjury is critically needed. This study will 1) define novel PCS trajectory typologies in a racially/ethnically diverse population of 500 children with concussion (11-17 years, near equal distribution by sex), 2) identify associations between these typologies and patterns of inflammatory biomarkers and genetic variants, 3) develop a risk stratification model to identify children at risk for persistent PCS; and 4) gain unique insights and describe PCS impact, including fatigue, on longer-term academic and social outcomes. We will be the first to use NIH's symptom science model and patient-reported outcomes to explore the patterns of fatigue and other physical, cognitive, psychological, emotional and academic responses to concussion in children over a full year. Our model will enable clinicians and educators to identify children most at risk for poor long-term health, social, and academic outcomes after concussion. This work is critical to meeting our long-term goal of developing personalized concussion symptom-management strategies to improve outcomes and reduce disparities in the health and quality of life of children.
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Affiliation(s)
- Karin Reuter-Rice
- Duke University School of Nursing, Durham, North Carolina, United States of America
- Department of Pediatrics, Duke University School of Medicine, Durham, North Carolina, United States of America
- Department of Neurosurgery, Duke University School of Medicine, Durham, North Carolina, United States of America
| | - Amanda N. Fitterer
- Duke University School of Nursing, Durham, North Carolina, United States of America
| | - Peter Duquette
- Department of Physical Medicine & Rehabilitation, Univeristy of North Carolina at Chapel Hill, School of Medicine, Chapel Hill, North Carolina, United States of America
| | - Qing Yang
- Duke University School of Nursing, Durham, North Carolina, United States of America
| | - Anushka K. Palipana
- Duke University School of Nursing, Durham, North Carolina, United States of America
| | - Daniel Laskowitz
- Department of Neurology, Duke University School of Medicine, Durham, North Carolina, United States of America
| | - Melanie E. Garrett
- Duke University School of Medicine, Duke Molecular Physiology Institute, Durham, North Carolina, United States of America
| | - Margaret Fletcher
- Duke University School of Nursing, Durham, North Carolina, United States of America
| | - Julia Smith
- Duke University School of Medicine, Duke Molecular Physiology Institute, Durham, North Carolina, United States of America
| | - Lynn Makor
- Department of Public Instruction, State of North Carolina, Office of Exceptional Children, Raleigh, North Carolina, United States of America
| | - Gerald Grant
- Department of Neurosurgery, Duke University School of Medicine, Durham, North Carolina, United States of America
| | - Kristen Ramsey
- Duke University Health System, Carolina Family Practice and Sports Medicine, Carolina Sports Concussion Clinic, Cary, North Carolina, United States of America
| | - O. Josh Bloom
- Duke University Health System, Carolina Family Practice and Sports Medicine, Carolina Sports Concussion Clinic, Cary, North Carolina, United States of America
| | - Allison E. Ashley-Koch
- Duke University School of Medicine, Duke Molecular Physiology Institute, Durham, North Carolina, United States of America
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Smulligan KL, Carry P, Smith AC, Esopenko C, Baugh CM, Wilson JC, Howell DR. Cervical spine proprioception and vestibular/oculomotor function: An observational study comparing young adults with and without a concussion history. Phys Ther Sport 2024; 69:33-39. [PMID: 39013262 DOI: 10.1016/j.ptsp.2024.07.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2024] [Revised: 07/08/2024] [Accepted: 07/10/2024] [Indexed: 07/18/2024]
Abstract
OBJECTIVE To investigate dizziness, vestibular/oculomotor symptoms, and cervical spine proprioception among adults with/without a concussion history. METHODS Adults ages 18-40 years with/without a concussion history completed: dizziness handicap inventory (DHI), visio-vestibular exam (VVE), and head repositioning accuracy (HRA, assesses cervical spine proprioception). Linear regression models were used to assess relationships between (1) concussion/no concussion history group and VVE, HRA, and DHI, and (2) DHI with HRA and VVE for the concussion history group. RESULTS We enrolled 42 participants with concussion history (age = 26.5 ± 4.5 years, 79% female, mean = 1.4± 0.8 years post-concussion) and 46 without (age = 27.0± 3.8 years, 74% female). Concussion history was associated with worse HRA (β = 1.23, 95% confidence interval [CI]: 0.77, 1.68; p < 0.001), more positive VVE subtests (β = 3.01, 95%CI: 2.32, 3.70; p < 0.001), and higher DHI scores (β = 9.79, 95%CI: 6.27, 13.32; p < 0.001) after covariate adjustment. For the concussion history group, number of positive VVE subtests was significantly associated with DHI score (β = 3.78, 95%CI: 2.30, 5.26; p < 0.001) after covariate adjustment, while HRA error was not (β = 1.10, 95%CI: -2.32, 4.51; p = 0.52). CONCLUSIONS Vestibular/oculomotor symptom provocation and cervical spine proprioception impairments may persist chronically (i.e., 3 years) after concussion. Assessing dizziness, vestibular/oculomotor and cervical spine function after concussion may inform patient-specific treatments to address ongoing dysfunction.
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Affiliation(s)
- Katherine L Smulligan
- Department of Orthopedics, University of Colorado School of Medicine, Aurora, CO, USA; Sports Medicine Center, Children's Hospital of Colorado, Aurora, CO, USA
| | - Patrick Carry
- Department of Orthopedics, University of Colorado School of Medicine, Aurora, CO, USA; Sports Medicine Center, Children's Hospital of Colorado, Aurora, CO, USA
| | - Andrew C Smith
- Department of Physical Medicine and Rehabilitation, University of Colorado School of Medicine, Aurora, CO, USA
| | - Carrie Esopenko
- Department of Rehabilitation and Human Performance, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Christine M Baugh
- Center for Bioethics and Humanities, Division of General Internal Medicine, University of Colorado School of Medicine, Aurora, CO, USA
| | - Julie C Wilson
- Department of Orthopedics, University of Colorado School of Medicine, Aurora, CO, USA; Sports Medicine Center, Children's Hospital of Colorado, Aurora, CO, USA; Department of Pediatrics, University of Colorado School of Medicine, Aurora, CO, USA
| | - David R Howell
- Department of Orthopedics, University of Colorado School of Medicine, Aurora, CO, USA; Sports Medicine Center, Children's Hospital of Colorado, Aurora, CO, USA.
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Kennedy CM, Burma JS, Smirl JD. Sensor-Assisted Analysis of Autonomic and Cerebrovascular Dysregulation following Concussion in an Individual with a History of Ten Concussions: A Case Study. SENSORS (BASEL, SWITZERLAND) 2024; 24:4404. [PMID: 39001186 PMCID: PMC11244393 DOI: 10.3390/s24134404] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/09/2024] [Revised: 06/27/2024] [Accepted: 07/01/2024] [Indexed: 07/16/2024]
Abstract
INTRODUCTION Concussion is known to cause transient autonomic and cerebrovascular dysregulation that generally recovers; however, few studies have focused on individuals with an extensive concussion history. METHOD The case was a 26-year-old male with a history of 10 concussions, diagnosed for bipolar type II disorder, mild attention-deficit hyperactivity disorder, and a history of migraines/headaches. The case was medicated with Valproic Acid and Escitalopram. Sensor-based baseline data were collected within six months of his injury and on days 1-5, 10, and 14 post-injury. Symptom reporting, heart rate variability (HRV), neurovascular coupling (NVC), and dynamic cerebral autoregulation (dCA) assessments were completed using numerous biomedical devices (i.e., transcranial Doppler ultrasound, 3-lead electrocardiography, finger photoplethysmography). RESULTS Total symptom and symptom severity scores were higher for the first-week post-injury, with physical and emotional symptoms being the most impacted. The NVC response showed lowered activation in the first three days post-injury, while autonomic (HRV) and autoregulation (dCA) were impaired across all testing visits occurring in the first 14 days following his concussion. CONCLUSIONS Despite symptom resolution, the case demonstrated ongoing autonomic and autoregulatory dysfunction. Larger samples examining individuals with an extensive history of concussion are warranted to understand the chronic physiological changes that occur following cumulative concussions through biosensing devices.
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Affiliation(s)
- Courtney M Kennedy
- Cerebrovascular Concussion Laboratory, Faculty of Kinesiology, University of Calgary, Calgary, AB T2N 1N4, Canada
- Sport Injury Prevention Research Centre, Faculty of Kinesiology, University of Calgary, Calgary, AB T2N 1N4, Canada
- Human Performance Laboratory, Faculty of Kinesiology, University of Calgary, Calgary, AB T2N 1N4, Canada
- Libin Cardiovascular Institute of Alberta, University of Calgary, Calgary, AB T2N 1N4, Canada
- Alberta Children's Hospital Research Institute, University of Calgary, Calgary, AB T2N 1N4, Canada
- Hotchkiss Brain Institute, University of Calgary, Calgary, AB T2N 1N4, Canada
- Integrated Concussion Research Program, University of Calgary, Calgary, AB T2N 1N4, Canada
| | - Joel S Burma
- Cerebrovascular Concussion Laboratory, Faculty of Kinesiology, University of Calgary, Calgary, AB T2N 1N4, Canada
- Sport Injury Prevention Research Centre, Faculty of Kinesiology, University of Calgary, Calgary, AB T2N 1N4, Canada
- Human Performance Laboratory, Faculty of Kinesiology, University of Calgary, Calgary, AB T2N 1N4, Canada
- Libin Cardiovascular Institute of Alberta, University of Calgary, Calgary, AB T2N 1N4, Canada
- Alberta Children's Hospital Research Institute, University of Calgary, Calgary, AB T2N 1N4, Canada
- Hotchkiss Brain Institute, University of Calgary, Calgary, AB T2N 1N4, Canada
- Integrated Concussion Research Program, University of Calgary, Calgary, AB T2N 1N4, Canada
| | - Jonathan D Smirl
- Cerebrovascular Concussion Laboratory, Faculty of Kinesiology, University of Calgary, Calgary, AB T2N 1N4, Canada
- Sport Injury Prevention Research Centre, Faculty of Kinesiology, University of Calgary, Calgary, AB T2N 1N4, Canada
- Human Performance Laboratory, Faculty of Kinesiology, University of Calgary, Calgary, AB T2N 1N4, Canada
- Libin Cardiovascular Institute of Alberta, University of Calgary, Calgary, AB T2N 1N4, Canada
- Alberta Children's Hospital Research Institute, University of Calgary, Calgary, AB T2N 1N4, Canada
- Hotchkiss Brain Institute, University of Calgary, Calgary, AB T2N 1N4, Canada
- Integrated Concussion Research Program, University of Calgary, Calgary, AB T2N 1N4, Canada
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Neill MG, Burma JS, Miutz LN, Kennedy CM, Penner LC, Newel KT, Smirl JD. Transcranial Doppler Ultrasound and Concussion-Supplemental Symptoms with Physiology: A Systematic Review. J Neurotrauma 2024; 41:1509-1523. [PMID: 38468559 DOI: 10.1089/neu.2023.0421] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/13/2024] Open
Abstract
Sport-related concussion (SRC) can impair the cerebrovasculature both acutely and chronically. Transcranial Doppler (TCD) ultrasound assessment has the potential to illuminate the mechanisms of impairment and provide an objective evaluation of SRC. The current systematic review investigated studies employing TCD ultrasound assessment of intracranial arteries across three broad categories of cerebrovascular regulation: neurovascular coupling (NVC), cerebrovascular reactivity (CVR), and dynamic cerebral autoregulation (dCA). The current review was registered in the International Prospective Register of Systematic Reviews (PROSPERO) database (CRD42021275627). The search strategy was applied to PubMed, as this database indexes all biomedical journals. Original articles on TCD for athletes with medically diagnosed SRC were included. Title/abstract and full-text screening were completed by three authors. Two authors completed data extraction and risk of bias using the Methodological Index for Non-Randomized Studies and Scottish Intercollegiate Guideline Network checklists. Of the 141 articles identified, 14 met the eligibility criteria. One article used an NVC challenge, eight assessed CVR, and six investigated dCA. Methodologies varied widely among studies, and results were heterogeneous. There was evidence of cerebrovascular impairment in all three domains roughly 2 days post-SRC, but the magnitude and recovery of these impairments were not clear. There was evidence that clinical symptom resolution occurred before cerebrovascular function, indicating that physiological deficits may persist despite clinical recovery and return to play. Collectively, this emphasizes an opportunity for the use of TCD to illuminate the cerebrovascular deficits caused by SRC. It also highlights that there is need for consistent methodological rigor when employing TCD in a SRC population.
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Affiliation(s)
- Matthew G Neill
- Cerebrovascular Concussion Lab, University of Calgary, Calgary, Alberta, Canada
- Sport Injury Prevention Research Centre, University of Calgary, Calgary, Alberta, Canada
- Human Performance Laboratory, Faculty of Kinesiology, University of Calgary, Calgary, Alberta, Canada
| | - Joel S Burma
- Cerebrovascular Concussion Lab, University of Calgary, Calgary, Alberta, Canada
- Sport Injury Prevention Research Centre, University of Calgary, Calgary, Alberta, Canada
- Human Performance Laboratory, Faculty of Kinesiology, University of Calgary, Calgary, Alberta, Canada
- Hotchkiss Brain Institute, University of Calgary, Calgary, Alberta, Canada
- Integrated Concussion Research Program, University of Calgary, Calgary, Alberta, Canada
- Alberta Children's Hospital Research Institute, University of Calgary, Calgary, Alberta, Canada
- Libin Cardiovascular Institute of Alberta, University of Calgary, Calgary, Alberta, Canada
| | - Lauren N Miutz
- Cerebrovascular Concussion Lab, University of Calgary, Calgary, Alberta, Canada
- Sport Injury Prevention Research Centre, University of Calgary, Calgary, Alberta, Canada
- Human Performance Laboratory, Faculty of Kinesiology, University of Calgary, Calgary, Alberta, Canada
- Hotchkiss Brain Institute, University of Calgary, Calgary, Alberta, Canada
- Integrated Concussion Research Program, University of Calgary, Calgary, Alberta, Canada
- Alberta Children's Hospital Research Institute, University of Calgary, Calgary, Alberta, Canada
- Libin Cardiovascular Institute of Alberta, University of Calgary, Calgary, Alberta, Canada
- Department of Health and Sport Science, University of Dayton, Dayton, Ohio, USA
| | - Courtney M Kennedy
- Cerebrovascular Concussion Lab, University of Calgary, Calgary, Alberta, Canada
- Sport Injury Prevention Research Centre, University of Calgary, Calgary, Alberta, Canada
- Human Performance Laboratory, Faculty of Kinesiology, University of Calgary, Calgary, Alberta, Canada
- Hotchkiss Brain Institute, University of Calgary, Calgary, Alberta, Canada
- Integrated Concussion Research Program, University of Calgary, Calgary, Alberta, Canada
- Alberta Children's Hospital Research Institute, University of Calgary, Calgary, Alberta, Canada
- Libin Cardiovascular Institute of Alberta, University of Calgary, Calgary, Alberta, Canada
| | - Linden C Penner
- Cerebrovascular Concussion Lab, University of Calgary, Calgary, Alberta, Canada
- Sport Injury Prevention Research Centre, University of Calgary, Calgary, Alberta, Canada
- Human Performance Laboratory, Faculty of Kinesiology, University of Calgary, Calgary, Alberta, Canada
- Hotchkiss Brain Institute, University of Calgary, Calgary, Alberta, Canada
- Integrated Concussion Research Program, University of Calgary, Calgary, Alberta, Canada
- Alberta Children's Hospital Research Institute, University of Calgary, Calgary, Alberta, Canada
- Libin Cardiovascular Institute of Alberta, University of Calgary, Calgary, Alberta, Canada
- Faculty of Medicine and Dentistry, University of Alberta, Edmonton, Alberta, Canada
| | - Kailey T Newel
- Cerebrovascular Concussion Lab, University of Calgary, Calgary, Alberta, Canada
- Sport Injury Prevention Research Centre, University of Calgary, Calgary, Alberta, Canada
- School of Health and Exercise Sciences, Faculty of Health and Social Development, University of British Columbia, Kelowna, British Columbia, Canada
- Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada
| | - Jonathan D Smirl
- Cerebrovascular Concussion Lab, University of Calgary, Calgary, Alberta, Canada
- Sport Injury Prevention Research Centre, University of Calgary, Calgary, Alberta, Canada
- Human Performance Laboratory, Faculty of Kinesiology, University of Calgary, Calgary, Alberta, Canada
- Hotchkiss Brain Institute, University of Calgary, Calgary, Alberta, Canada
- Integrated Concussion Research Program, University of Calgary, Calgary, Alberta, Canada
- Alberta Children's Hospital Research Institute, University of Calgary, Calgary, Alberta, Canada
- Libin Cardiovascular Institute of Alberta, University of Calgary, Calgary, Alberta, Canada
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Roby PR, Mozel AE, Grady MF, Master CL, Arbogast KB. Neurovascular Coupling in Acutely Concussed Adolescent Patients. J Neurotrauma 2024; 41:e1660-e1667. [PMID: 38468544 DOI: 10.1089/neu.2023.0192] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/13/2024] Open
Abstract
Neurovascular coupling (NVC) uniquely describes cerebrovascular response to neural activation and has demonstrated impairments following concussion in adult patients. It is currently unclear how adolescent patients experience impaired NVC acutely following concussion during this dynamic phase of physiological development. The purpose of this study was to investigate NVC in acutely concussed adolescent patients relative to controls. We recruited patients presenting to a sports medicine practice within 28 days of a concussion or a musculoskeletal injury (controls). Transcranial Doppler ultrasound was used to measure changes in patients' posterior cerebral artery (PCA) velocity in response to two progressively challenging visual tasks: (1) reading and (2) visual search. Each task was presented in five 1-min trials (20 sec eyes closed/40 sec eyes open). Resting PCA velocity data were derived by averaging PCA velocity across a 2-min baseline period that preceded the visual tasks. Filtered task data were converted to time-series curves representing 40 consecutive 1-sec averages for each trial. Curves were then averaged across the five trials and time-aligned to stimulus onset (eyes open) to generate a single ensemble-averaged 40-sec curve representing NVC response for each participant for each task. Independent t tests were used to assess group differences (concussion vs. control) in resting PCA velocity. Separate linear mixed-effects models were used to evaluate group differences (concussion vs. control) in NVC response profiles for both visual tasks and group-by-task interaction. Twenty-one concussion patients (female = 8 [38.1%]; age = 14.4 ± 1.9 years) and 20 controls (female = 7 [35.0%]; age = 14.4 ± 1.9 years) were included in our analysis. Average resting PCA velocity did not significantly differ between concussion patients (36.6 ± 8.0 cm/sec) and controls (39.3 ± 8.5 cm/sec) (t39 = 1.06; p = 0.30). There were no significant group differences in relative NVC response curves during the reading task (F1,1560 = 2.23; p = 0.14) or the visual search task (F1,1521 = 2.04; p = 0.15). In contrast, the differential response to task (e.g., increase from reading task to visual search task) was significantly greater in concussion patients than in controls (p < 0.0001). The NVC response to the visual search task was 7.1% higher than the response to reading in concussion patients relative to being 5.5% higher in controls. Our data indicate that concussed patients present with a significantly greater response to more difficult tasks than do controls, suggesting that concussed adolescents require increased neural resource allocation as task difficulty increases. The study provides insight into the neurophysiological consequences of concussion in adolescent patients.
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Affiliation(s)
- Patricia R Roby
- Center for Injury Research and Prevention, The Children's Hospital of Philadelphia, Philadelphia, Pennsylvania, USA
| | - Anne E Mozel
- Center for Injury Research and Prevention, The Children's Hospital of Philadelphia, Philadelphia, Pennsylvania, USA
| | - Matthew F Grady
- Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, USA
- Sports Medicine Performance Center, The Children's Hospital of Philadelphia, Philadelphia, Pennsylvania, USA
| | - Christina L Master
- Center for Injury Research and Prevention, The Children's Hospital of Philadelphia, Philadelphia, Pennsylvania, USA
- Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, USA
- Sports Medicine Performance Center, The Children's Hospital of Philadelphia, Philadelphia, Pennsylvania, USA
| | - Kristy B Arbogast
- Center for Injury Research and Prevention, The Children's Hospital of Philadelphia, Philadelphia, Pennsylvania, USA
- Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, USA
- Division of Emergency Medicine, The Children's Hospital of Philadelphia, Philadelphia, Pennsylvania, USA
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Howell DR, Wingerson MJ, Smulligan KL, Magliato S, Simon S, Wilson JC. Exercising More Than 150 min/wk After Concussion Is Associated With Sleep Quality Improvements. J Head Trauma Rehabil 2024; 39:E216-E224. [PMID: 38032838 PMCID: PMC11070449 DOI: 10.1097/htr.0000000000000918] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/02/2023]
Abstract
OBJECTIVE To examine whether a high volume of aerobic exercise after concussion (>150 min/wk) is associated with improved sleep quality over a 1-month period. We hypothesized that more than 150 min/wk of exercise would be associated with improved sleep quality across concussion recovery. DESIGN Prospective cohort observational study. SETTING Sports medicine clinic. PARTICIPANTS Adolescents initially tested 8.4 ± 3.5 (range, 2-18) days postconcussion who returned for a follow-up assessment 34.3 ± 7.7 (range: 20-49) days postconcussion. MAIN OUTCOME MEASURES Participants completed the Pittsburgh Sleep Quality Index and the Post-Concussion Symptom Inventory. No specific exercise or sleep recommendations were given beyond what their treating physician provided. Between study visits, participants recorded exercise performed via wrist-worn actigraphy. We calculated average exercise minutes per week and grouped participants as those who exercised more than 150 min/wk versus those who exercised 150 min/wk or less. RESULTS Thirty-six adolescents participated. Fifteen (42%) recorded more than 150 min/wk of aerobic exercise (age = 14.0 ± 1.7 years; 47% female; mean = 5.6 ± 1.2 d/wk of exercise; mean = 49.2 ± 17.5 min/session), and 21 recorded 150 min/wk or less of aerobic exercise (age = 15.0 ± 1.9 years; 76% female; mean = 2.7 ± 1.6 d/wk of exercise; mean = 30.2 ± 7.8 min/session). There were no significant group differences in the proportion of those who self-reported beginning physical activity prior to enrollment (47% vs 33%; P = .42) or for initial sleep quality rating (8.0 ± 3.7 vs 8.6 ± 4.1; P = .67) or initial concussion symptom severity rating (34.9 ± 28.0 vs 42.6 ± 25.9; P = .40). The group that exercised more than 150 min/wk between visits demonstrated significantly greater median PSQI rating improvements than those who exercised 150 min/wk or less, with a large effect size noted (median change [interquartile range] = 5 [3, 7] vs 1 [0, 4]; P = .008; Cohen d = 0.96). CONCLUSION Current recommendations suggest that subsymptom aerobic exercise can be beneficial after concussion. Our findings indicate that an exercise volume of more than 150 min/wk led to greater sleep quality improvements than those who exercised below this level.
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Affiliation(s)
- David R. Howell
- Sports Medicine Center, Children’s Hospital Colorado, Aurora, CO, USA
- Department of Orthopedics, University of Colorado School of Medicine, Aurora, CO, USA
| | - Mathew J. Wingerson
- Sports Medicine Center, Children’s Hospital Colorado, Aurora, CO, USA
- Department of Orthopedics, University of Colorado School of Medicine, Aurora, CO, USA
| | | | - Samantha Magliato
- Sports Medicine Center, Children’s Hospital Colorado, Aurora, CO, USA
- Department of Orthopedics, University of Colorado School of Medicine, Aurora, CO, USA
| | - Stacey Simon
- Department of Pediatrics, University of Colorado School of Medicine, Aurora, CO, USA
- Pediatric Sleep Center, Children’s Hospital of Colorado, Aurora, CO, USA
| | - Julie C. Wilson
- Sports Medicine Center, Children’s Hospital Colorado, Aurora, CO, USA
- Department of Orthopedics, University of Colorado School of Medicine, Aurora, CO, USA
- Department of Pediatrics, University of Colorado School of Medicine, Aurora, CO, USA
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Woodrow RE, Menon DK, Stamatakis EA. Repeat traumatic brain injury exacerbates acute thalamic hyperconnectivity in humans. Brain Commun 2024; 6:fcae223. [PMID: 38989528 PMCID: PMC11235327 DOI: 10.1093/braincomms/fcae223] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2024] [Revised: 05/16/2024] [Accepted: 06/25/2024] [Indexed: 07/12/2024] Open
Abstract
Repeated mild traumatic brain injury is of growing interest regarding public and sporting safety and is thought to have greater adverse or cumulative neurological effects when compared with single injury. While epidemiological links between repeated traumatic brain injury and outcome have been investigated in humans, exploration of its mechanistic substrates has been largely undertaken in animal models. We compared acute neurological effects of repeat mild traumatic brain injury (n = 21) to that of single injury (n = 21) and healthy controls (n = 76) using resting-state functional MRI and quantified thalamic functional connectivity, given previous identification of its prognostic potential in human mild traumatic brain injury and rodent repeat mild traumatic brain injury. Acute thalamocortical functional connectivity showed a rank-based trend of increasing connectivity with number of injuries, at local and global scales of investigation. Thus, history of as few as two previous injuries can induce a vulnerable neural environment of exacerbated hyperconnectivity, in otherwise healthy individuals from non-specialist populations. These results further establish thalamocortical functional connectivity as a scalable marker of acute injury and long-term neural dysfunction following mild traumatic brain injury.
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Affiliation(s)
- Rebecca E Woodrow
- University Division of Anaesthesia, University of Cambridge, Cambridge CB2 0SP, UK
- Department of Clinical Neurosciences, University of Cambridge, Cambridge CB2 0QQ, UK
| | - David K Menon
- University Division of Anaesthesia, University of Cambridge, Cambridge CB2 0SP, UK
- Wolfson Brain Imaging Centre, University of Cambridge, Cambridge CB2 0QQ, UK
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Oldham JR, DeFalco A, Willwerth S, Nagle S, Whittaker F, Mannix R, Meehan WP, Bradford DE. Research Letter: Concussion-Related General Startle Suppression in Adolescent Athletes. J Head Trauma Rehabil 2024:00001199-990000000-00173. [PMID: 38916433 DOI: 10.1097/htr.0000000000000979] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/26/2024]
Abstract
OBJECTIVES We investigated the acoustic startle reflex in recently concussed adolescent athletes compared to healthy controls and those with concussion history (>1 year prior) but no current symptoms. We hypothesized that individuals with recent concussion would have a suppressed startle response compared to healthy controls. METHODS We conducted a cross-sectional study on 49 adolescent athletes with a recent concussion (n = 20; age: 14.6 ± 1.6 years; 60% female), a concussion history > 1 year prior (n = 16; age: 14.8 ± 2.0 years; 44% female), and healthy controls (n = 13; age: 13.3 ± 2.8 years; 54% female). We measured the eyeblink of the general startle reflex via electromyography activity of the orbicularis oculi muscle using electrodes placed under the right eye. Measurement sessions included twelve 103 decibel acoustic startle probes ~50 milliseconds in duration delivered ~15-25 seconds apart. The primary dependent variable was mean startle magnitude (µV), and group was the primary independent variable. We used a one-way analysis of variance followed by a Tukey post hoc test to compare mean startle magnitude between groups. RESULTS Mean startle magnitude significantly differed (F = 5.49, P = .007) among the groups. Mean startle magnitude was significantly suppressed for the concussion (P = .01) and concussion history groups (P = .02) compared to healthy controls. There was no significant difference between the recent concussion and concussion history groups (P = 1.00). CONCLUSION Our results provide novel evidence for startle suppression in adolescent athletes following concussion. The concussion history group had an attenuated startle response beyond resolution of their recovery, suggesting there may be lingering physiological dysfunction.
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Affiliation(s)
- Jessie R Oldham
- Author Affiliations: Department of Physical Medicine and Rehabilitation (Dr Oldham), Virginia Commonwealth University School of Medicine, Richmond, Virginia; Department of Psychology (Ms DeFalco), Colorado State University, Fort Collins, Colorado; The Warren Alpert Medical School of Brown University (Ms Willwerth), Providence, Rhode Island; Division of Sports Medicine (Ms Nagle), The Micheli Center for Sports Injury Prevention (Dr Meehan), Waltham, Massachusetts; Division of Sports Medicine (Dr Meehan and Ms Nagle), Division of Emergency Medicine (Dr Mannix), Boston Children's Hospital, Boston, Massachusetts; Oregon State University (Ms Whittaker), Corvallis, Oregon; and School of Psychological Science (Dr Bradford), Oregon State University, Corvallis, Oregon; and Departments of Pediatrics and Orthopedics (Dr Meehan), Departments of Pediatrics and Emergency Medicine (Dr Mannix), Harvard Medical School, Boston, Massachusetts
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10
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Sharma B, Koelink E, DeMatteo C, Noseworthy MD, Timmons BW. The Concussion, Exercise, and Brain Networks (ConExNet) study: a cohort study aimed at understanding the effects of sub-maximal aerobic exercise on resting state functional brain activity in pediatric concussion. BMC Sports Sci Med Rehabil 2024; 16:133. [PMID: 38886815 PMCID: PMC11184857 DOI: 10.1186/s13102-024-00926-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2024] [Accepted: 06/12/2024] [Indexed: 06/20/2024]
Abstract
BACKGROUND Recent scientific evidence has challenged the traditional "rest-is-best" approach for concussion management. It is now thought that "exercise-is-medicine" for concussion, owing to dozens of studies which demonstrate that sub-maximal, graded aerobic exercise can reduce symptom burden and time to symptom resolution. However, the primary neuropathology of concussion is altered functional brain activity. To date, no studies have examined the effects of sub-maximal aerobic exercise on resting state functional brain activity in pediatric concussion. In addition, although exercise is now more widely prescribed following concussion, its cardiopulmonary response is not yet well understood in this population. Our study has two main goals. The first is to understand whether there are exercise-induced resting state functional brain activity differences in children with concussion vs. healthy controls. The second is to profile the physiological response to exercise and understand whether it differs between groups. METHODS We will perform a single-center, controlled, prospective cohort study of pediatric concussion at a large, urban children's hospital and academic center. Children with sport-related concussion (aged 12-17 years) will be recruited within 4-weeks of injury by our clinical study team members. Key inclusion criteria include: medical clearance to exercise, no prior concussion or neurological history, and no implants that would preclude MRI. Age- and sex-matched healthy controls will be required to meet the same inclusion criteria and will be recruited through the community. The study will be performed over two visits separated by 24-48 h. Visit 1 involves exercise testing (following the current clinical standard for concussion) and breath-by-breath gas collection using a metabolic cart. Visit 2 involves two functional MRI (fMRI) scans interspersed by 10-minutes of treadmill walking at an intensity calibrated to Visit 1 findings. To address sub-objectives, all participants will be asked to self-report symptoms daily and wear a waist-worn tri-axial accelerometer for 28-days after Visit 2. DISCUSSION Our study will advance the growing exercise-concussion field by helping us understand whether exercise impacts outcomes beyond symptoms in pediatric concussion. We will also be able to profile the cardiopulmonary response to exercise, which may allow for further understanding (and eventual optimization) of exercise in concussion management. TRIAL REGISTRATION Not applicable.
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Affiliation(s)
- Bhanu Sharma
- Child Health and Exercise Medicine Program, Department of Pediatrics, McMaster University, Hamilton, ON, Canada
- Imaging Research Centre, St. Joseph's Healthcare, Hamilton, ON, Canada
- Department of Electrical & Computer Engineering, McMaster University, Hamilton, ON, Canada
| | - Eric Koelink
- Department of Pediatric Emergency Medicine, McMaster Children's Hospital, Hamilton, ON, Canada
| | - Carol DeMatteo
- School of Rehabilitation Science, McMaster University, Hamilton, ON, Canada
- CanChild Centre for Childhood Disability Research, McMaster University, Hamilton, ON, Canada
| | - Michael D Noseworthy
- Imaging Research Centre, St. Joseph's Healthcare, Hamilton, ON, Canada
- Department of Electrical & Computer Engineering, McMaster University, Hamilton, ON, Canada
- McMaster School of Biomedical Engineering, McMaster University, Hamilton, ON, Canada
- Department of Medical Imaging, McMaster University, Hamilton, ON, Canada
| | - Brian W Timmons
- Child Health and Exercise Medicine Program, Department of Pediatrics, McMaster University, Hamilton, ON, Canada.
- CanChild Centre for Childhood Disability Research, McMaster University, Hamilton, ON, Canada.
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11
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Wingerson MJ, Hunt DL, Wilson JC, Mannix RC, Meehan WP, Howell DR. Factors Associated with Symptom Resolution after Aerobic Exercise Intervention in Adolescent and Young Adults with Concussion. Med Sci Sports Exerc 2024; 56:783-789. [PMID: 38109187 PMCID: PMC11018463 DOI: 10.1249/mss.0000000000003358] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2023]
Abstract
BACKGROUND Aerobic exercise facilitates postconcussion symptom resolution at the group level, but patient-level characteristics may affect the likelihood of treatment efficacy. PURPOSE This study aimed to investigate demographic and clinical characteristics, which differentiate postconcussion aerobic exercise treatment efficacy from nonefficacy in the intervention arm of a randomized clinical trial. METHODS Adolescent and young adult participants initiated a standardized aerobic exercise intervention within 14 d of concussion, consisting of self-selected exercise for 100 min·wk -1 at an individualized heart rate (80% of heart rate induced symptom exacerbation during graded exercise testing). Treatment efficacy was defined as symptom resolution within 28-d postconcussion. Treatment efficacy and nonefficacy groups were compared on demographics, clinical characteristics, intervention adherence, and persistent symptom risk using the Predicting Persistent Postconcussive Problems in Pediatrics (5P) clinical risk score. RESULTS A total of 27 participants (16.1 ± 2.3 yr old; range, 11-21 yr; 52% female) began the intervention, with a mean of 9.5 ± 3.7 d after concussion; half ( n = 13; 48%) demonstrated treatment efficacy (symptom resolution within 28 d postconcussion). Those whose symptoms resolved within 28 d had significantly lower preintervention postconcussion symptom inventory scores (21.2 ± 13.2 vs 41.4 ± 22.2; P < 0.01), greater adherence to the intervention (77% vs 36%; P = 0.05), and longer average exercise duration (median [interquartile range], 49.7 [36.8-68.6] vs 30.4 [20.7-34.7] min; P < 0.01) than those whose symptoms lasted more than 28 d. Groups were similar in age, sex, timing of intervention, and preintervention 5P risk score. CONCLUSIONS A standardized aerobic exercise intervention initiated within 14 d of concussion demonstrated efficacy for approximately half of participants, according to our definition of treatment efficacy. This multisite aerobic exercise intervention suggests that lower symptom severity, higher intervention adherence, and greater exercise duration are factors that increase the likelihood of symptoms resolving within 28 d of concussion.
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Affiliation(s)
- Mathew J. Wingerson
- University of Colorado School of Medicine, Department of Orthopedics, Aurora, CO
- Children’s Hospital Colorado, Sports Medicine Center, Aurora, CO
| | - Danielle L. Hunt
- Boston Children’s Hospital, Micheli Center for Sports Injury Prevention, Boston, MA
| | - Julie C. Wilson
- University of Colorado School of Medicine, Department of Orthopedics, Aurora, CO
- Children’s Hospital Colorado, Sports Medicine Center, Aurora, CO
- University of Colorado School of Medicine, Department of Pediatrics, Aurora, CO
| | - Rebekah C. Mannix
- Boston Children’s Hospital, Micheli Center for Sports Injury Prevention, Boston, MA
| | - William P. Meehan
- Boston Children’s Hospital, Micheli Center for Sports Injury Prevention, Boston, MA
| | - David R. Howell
- University of Colorado School of Medicine, Department of Orthopedics, Aurora, CO
- Children’s Hospital Colorado, Sports Medicine Center, Aurora, CO
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12
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Suzuki S, Mattson CL, Obermeier MC, Casanova AD, Doda AK, Sayles LA, Custer AM, Chmielewski TL. Athletic Fear Avoidance in Athletes Receiving Rehabilitation for Sport-Related Concussion: A Preliminary Study. Sports Health 2024; 16:457-464. [PMID: 37208905 PMCID: PMC11025521 DOI: 10.1177/19417381231172513] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/21/2023] Open
Abstract
BACKGROUND Fear avoidance after musculoskeletal injury is avoiding activity due to fear of pain and contributes to persistent symptoms, depression, and disability. Little is known about fear avoidance for sport (athletic fear avoidance) in athletes with sport-related concussion (SRC). HYPOTHESIS Athletic fear avoidance after SRC would be elevated at the start of rehabilitation, improve over time, and be associated with postconcussion recovery outcomes. STUDY DESIGN Observational study. LEVEL OF EVIDENCE Level 4. METHODS Athletes in rehabilitation after SRC participated. Testing at initial and discharge visits and 6-month follow-up included Athletic Fear Avoidance Questionnaire (AFAQ), Postconcussion Symptom Scale (PCSS), Profile of Mood States (POMS), and Dizziness Handicap Inventory (DHI). Differences were explored in AFAQ score at initial testing based on sex or age (<18 or ≥18 years). Change in questionnaire scores over time was examined. Association of AFAQ score with other questionnaire scores was determined at each timepoint. RESULTS A total of 48 athletes participated: 28 completed initial testing only (INITIAL ONLY), and 20 completed all testing (LONGITUDINAL). Across cohorts, the mean (SD) AFAQ score at initial testing was 24.3 (7.6) points, with no significant difference by sex or age. AFAQ, PCSS, POMS, and DHI scores improved in LONGITUDINAL; the effect size was large from initial to discharge testing (1.0, 1.0, 1.0, and 1.2, respectively) and variable from discharge to follow-up testing (0.52, -0.34, -0.08, and 0.02, respectively). AFAQ scores increased from discharge to follow-up in 3 athletes and were consistently above the mean value in 2 athletes. AFAQ score was significantly correlated to the other questionnaire scores at each timepoint (range, r = 0.36-0.75). CONCLUSION Athletic fear avoidance was elevated at the start of SRC rehabilitation, improved over time in most patients, and was associated with postconcussion symptoms, mood, and disability. CLINICAL RELEVANCE Athletic fear avoidance may impact recovery after SRC.
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Affiliation(s)
- Shuhei Suzuki
- TRIA Orthopedics, Bloomington, Minnesota, ATP Tour Inc, Ponte Vedra Beach, Florida
| | | | | | | | | | | | | | - Terese L. Chmielewski
- TRIA Orthopedics, Bloomington, Minnesota, University of Minnesota, Minneapolis, Minnesota
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13
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Ellingson CJ, Shafiq MA, Ellingson CA, Neary JP, Dehghani P, Singh J. Assessment of cardiovascular functioning following sport-related concussion: A physiological perspective. Auton Neurosci 2024; 252:103160. [PMID: 38428323 DOI: 10.1016/j.autneu.2024.103160] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2023] [Revised: 01/15/2024] [Accepted: 02/22/2024] [Indexed: 03/03/2024]
Abstract
There is still much uncertainty surrounding the approach to diagnosing and managing a sport-related concussion (SRC). Neurobiological recovery may extend beyond clinical recovery following SRC, highlighting the need for objective physiological parameters to guide diagnosis and management. With an increased understanding of the connection between the heart and the brain, the utility of assessing cardiovascular functioning following SRC has gained attention. As such, this review focuses on the assessment of cardiovascular parameters in the context of SRC. Although conflicting results have been reported, decreased heart rate variability, blood pressure variability, and systolic (ejection) time, in addition to increased spontaneous baroreflex sensitivity and magnitude of atrial contraction have been shown in acute SRC. We propose that these findings result from the neurometabolic cascade triggered by a concussion and represent alterations in myocardial calcium handling, autonomic dysfunction, and an exaggerated compensatory response that attempts to maintain homeostasis following a SRC. Assessment of the cardiovascular system has the potential to assist in diagnosing and managing SRC, contributing to a more comprehensive and multimodal assessment strategy.
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Affiliation(s)
- Chase J Ellingson
- College of Medicine, University of Saskatchewan Regina Campus, Regina, SK, Canada; Prairie Vascular Research Inc, Regina, SK, Canada
| | - M Abdullah Shafiq
- College of Medicine, University of Saskatchewan Regina Campus, Regina, SK, Canada; Faculty of Kinesiology and Health Studies, University of Regina, Regina, SK, Canada
| | - Cody A Ellingson
- Faculty of Kinesiology and Health Studies, University of Regina, Regina, SK, Canada
| | - J Patrick Neary
- Faculty of Kinesiology and Health Studies, University of Regina, Regina, SK, Canada
| | | | - Jyotpal Singh
- Prairie Vascular Research Inc, Regina, SK, Canada; Faculty of Kinesiology and Health Studies, University of Regina, Regina, SK, Canada.
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14
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D'Lauro C, Register-Mihalik JK, Meier TB, Kerr ZY, Knight K, Broglio SP, Leeds D, Lynall RC, Kroshus E, McCrea MA, McAllister TW, Schmidt JD, Master C, McGinty G, Jackson JC, Cameron KL, Buckley T, Kaminski T, Mihalik JP. Optimizing Concussion Care Seeking: Connecting Care-Seeking Behaviors and Neurophysiological States Through Blood Biomarkers. Am J Sports Med 2024; 52:801-810. [PMID: 38340366 DOI: 10.1177/03635465231221782] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/12/2024]
Abstract
BACKGROUND Timely and appropriate medical care after concussion presents a difficult public health problem. Concussion identification and treatment rely heavily on self-report, but more than half of concussions go unreported or are reported after a delay. If incomplete self-report increases exposure to harm, blood biomarkers may objectively indicate this neurobiological dysfunction. PURPOSE/HYPOTHESIS The purpose of this study was to compare postconcussion biomarker levels between individuals with different previous concussion diagnosis statuses and care-seeking statuses. It was hypothesized that individuals with undiagnosed concussions and poorer care seeking would show altered biomarker profiles. STUDY DESIGN Cohort study; Level of evidence, 3. METHODS Blood samples were collected from 287 military academy cadets and collegiate athletes diagnosed with concussion in the Advanced Research Core of the Concussion Assessment, Research and Education Consortium. The authors extracted each participant's self-reported previous concussion diagnosis status (no history, all diagnosed, ≥1 undiagnosed) and whether they had delayed or immediate symptom onset, symptom reporting, and removal from activity after the incident concussion. The authors compared the following blood biomarkers associated with neural injury between previous concussion diagnosis status groups and care-seeking groups: glial fibrillary acidic protein, ubiquitin c-terminal hydrolase-L1 (UCH-L1), neurofilament light chain (NF-L), and tau protein, captured at baseline, 24 to 48 hours, asymptomatic, and 7 days after unrestricted return to activity using tests of parallel profiles. RESULTS The undiagnosed previous concussion group (n = 21) had higher levels of NF-L at 24- to 48-hour and asymptomatic time points relative to all diagnosed (n = 72) or no previous concussion (n = 194) groups. For those with delayed removal from activity (n = 127), UCH-L1 was lower at 7 days after return to activity than that for athletes immediately removed from activity (n = 131). No other biomarker differences were observed. CONCLUSION Individuals with previous undiagnosed concussions or delayed removal from activity showed some different biomarker levels after concussion and after clinical recovery, despite a lack of baseline differences. This may indicate that poorer care seeking can create neurobiological differences in the concussed brain.
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Affiliation(s)
- Christopher D'Lauro
- Department of Behavioral Sciences and Leadership, United States Air Force Academy, Colorado Springs, Colorado, USA
- Investigation performed at University of Georgia, Athens, Georgia, USA
| | - Johna K Register-Mihalik
- Matthew Gfeller Center & STAR Heel Performance Laboratory, Department of Exercise and Sport Science, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA
- Investigation performed at University of Georgia, Athens, Georgia, USA
| | - Timothy B Meier
- Department of Neurosurgery, Medical College of Wisconsin, Milwaukee, Wisconsin, USA
- Investigation performed at University of Georgia, Athens, Georgia, USA
| | - Zachary Yukio Kerr
- Matthew Gfeller Center & STAR Heel Performance Laboratory, Department of Exercise and Sport Science, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA
- Investigation performed at University of Georgia, Athens, Georgia, USA
| | - Kristen Knight
- Department of Radiology and Biomedical Imaging, University of California, San Francisco, California, USA
- Investigation performed at University of Georgia, Athens, Georgia, USA
| | - Steven P Broglio
- University of Michigan Concussion Center, University of Michigan, Ann Arbor, Michigan, USA
- Investigation performed at University of Georgia, Athens, Georgia, USA
| | - Daniel Leeds
- Computer and Information Sciences, Fordham University, New York, New York, USA
- Investigation performed at University of Georgia, Athens, Georgia, USA
| | - Robert C Lynall
- UGA Concussion Research Laboratory, Department of Kinesiology, University of Georgia, Athens, Georgia, USA
- Investigation performed at University of Georgia, Athens, Georgia, USA
| | - Emily Kroshus
- University of Washington, Department of Pediatrics & Seattle Children's Research Institute, Center for Child Health, Behavior, and Development, Seattle, Washington, USA
- Investigation performed at University of Georgia, Athens, Georgia, USA
| | - Michael A McCrea
- Department of Neurosurgery, Medical College of Wisconsin, Milwaukee, Wisconsin, USA
- Investigation performed at University of Georgia, Athens, Georgia, USA
| | - Thomas W McAllister
- Department of Psychiatry, Indiana University School of Medicine, Indianapolis, Indiana, USA
- Investigation performed at University of Georgia, Athens, Georgia, USA
| | - Julianne D Schmidt
- UGA Concussion Research Laboratory, Department of Kinesiology, University of Georgia, Athens, Georgia, USA
- Investigation performed at University of Georgia, Athens, Georgia, USA
| | - Christina Master
- Division of Orthopedics, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania, USA
- Investigation performed at University of Georgia, Athens, Georgia, USA
| | - Gerald McGinty
- United States Air Force Academy, Colorado Springs, Colorado, USA
- Investigation performed at University of Georgia, Athens, Georgia, USA
| | - Jonathan C Jackson
- United States Air Force Academy, Colorado Springs, Colorado, USA
- Investigation performed at University of Georgia, Athens, Georgia, USA
| | - Kenneth L Cameron
- Keller Army Hospital, United States Military Academy, West Point, New York, USA
- Investigation performed at University of Georgia, Athens, Georgia, USA
| | - Thomas Buckley
- Department of Kinesiology & Applied Physiology, University of Delaware, Newark, Delaware, USA
- Investigation performed at University of Georgia, Athens, Georgia, USA
| | - Thomas Kaminski
- Department of Kinesiology & Applied Physiology, University of Delaware, Newark, Delaware, USA
- Investigation performed at University of Georgia, Athens, Georgia, USA
| | - Jason P Mihalik
- Department of Exercise and Sport Science, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA
- Investigation performed at University of Georgia, Athens, Georgia, USA
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15
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Bouchard HC, Higgins KL, Amadon GK, Laing-Young JM, Maerlender A, Al-Momani S, Neta M, Savage CR, Schultz DH. Concussion-Related Disruptions to Hub Connectivity in the Default Mode Network Are Related to Symptoms and Cognition. J Neurotrauma 2024; 41:571-586. [PMID: 37974423 DOI: 10.1089/neu.2023.0089] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2023] Open
Abstract
Concussions present with a myriad of symptomatic and cognitive concerns; however, the relationship between these functional disruptions and the underlying changes in the brain are not yet well understood. Hubs, or brain regions that are connected to many different functional networks, may be specifically disrupted after concussion. Given the implications in concussion research, we quantified hub disruption within the default mode network (DMN) and between the DMN and other brain networks. We collected resting-state functional magnetic resonance imaging data from collegiate student-athletes (n = 44) at three time points: baseline (before beginning their athletic season), acute post-injury (approximately 48h after a diagnosed concussion), and recovery (after starting return-to-play progression, but before returning to contact). We used self-reported symptoms and computerized cognitive assessments collected across similar time points to link these functional connectivity changes to clinical outcomes. Concussion resulted in increased connectivity between regions within the DMN compared with baseline and recovery, and this post-injury connectivity was more positively related to symptoms and more negatively related to visual memory performance compared with baseline and recovery. Further, concussion led to decreased connectivity between DMN hubs and visual network non-hubs relative to baseline and recovery, and this post-injury connectivity was more negatively related to somatic symptoms and more positively related to visual memory performance compared with baseline and recovery. Relationships between functional connectivity, symptoms, and cognition were not significantly different at baseline versus recovery. These results highlight a unique relationship between self-reported symptoms, visual memory performance, and acute functional connectivity changes involving DMN hubs after concussion in athletes. This may provide evidence for a disrupted balance of within- and between-network communication highlighting possible network inefficiencies after concussion. These results aid in our understanding of the pathophysiological disruptions after concussion and inform our understanding of the associations between disruptions in brain connectivity and specific clinical presentations acutely post-injury.
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Affiliation(s)
- Heather C Bouchard
- Center for Brain, Biology and Behavior, University of Nebraska-Lincoln, Lincoln, Nebraska, USA
- Department of Psychology, University of Nebraska-Lincoln, Lincoln, Nebraska, USA
| | - Kate L Higgins
- Center for Brain, Biology and Behavior, University of Nebraska-Lincoln, Lincoln, Nebraska, USA
- Department of Athletics, University of Nebraska-Lincoln, Lincoln, Nebraska, USA
| | - Grace K Amadon
- Center for Brain, Biology and Behavior, University of Nebraska-Lincoln, Lincoln, Nebraska, USA
- Department of Neurosurgery, Medical College of Wisconsin, Milwaukee, Wisconsin, USA
| | - Julia M Laing-Young
- Center for Brain, Biology and Behavior, University of Nebraska-Lincoln, Lincoln, Nebraska, USA
- Department of Psychology, University of Nebraska-Lincoln, Lincoln, Nebraska, USA
| | - Arthur Maerlender
- Center for Brain, Biology and Behavior, University of Nebraska-Lincoln, Lincoln, Nebraska, USA
| | - Seima Al-Momani
- Center for Brain, Biology and Behavior, University of Nebraska-Lincoln, Lincoln, Nebraska, USA
- Department of Psychology, University of Nebraska-Lincoln, Lincoln, Nebraska, USA
| | - Maital Neta
- Center for Brain, Biology and Behavior, University of Nebraska-Lincoln, Lincoln, Nebraska, USA
- Department of Psychology, University of Nebraska-Lincoln, Lincoln, Nebraska, USA
| | - Cary R Savage
- Center for Brain, Biology and Behavior, University of Nebraska-Lincoln, Lincoln, Nebraska, USA
- Department of Psychology, University of Nebraska-Lincoln, Lincoln, Nebraska, USA
| | - Douglas H Schultz
- Center for Brain, Biology and Behavior, University of Nebraska-Lincoln, Lincoln, Nebraska, USA
- Department of Psychology, University of Nebraska-Lincoln, Lincoln, Nebraska, USA
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16
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Munce TA, Peplowski AD, Bowman TG, Kelshaw PM, Campbell TR, Ahonen SB, Valentine VD, Cifu DX, Resch JE. Concussion diagnosis and recovery in relation to collegiate athletic department classification: a LIMBIC MATARS consortium investigation. Brain Inj 2024:1-11. [PMID: 38334036 DOI: 10.1080/02699052.2024.2310800] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2023] [Accepted: 01/23/2024] [Indexed: 02/10/2024]
Abstract
PURPOSE We investigated time to reach concussion diagnosis and recovery milestones in collegiate athletes relative to their schools' National Collegiate Athletic Association (NCAA) classification. METHODS We retrospectively examined 849 (43.1% female) concussion cases from 11 NCAA institutions (Division I Power 5 [n = 4], Division I Non-Power 5 [n = 4], and Division II/III [n = 3]) from the 2015-16 to 2019-20 athletic seasons. Our primary outcome measures were days to reach specific clinical milestones following concussion. RESULTS Median (IQR) time from injury to diagnosis was significantly longer at Division II/III institutions (1 [0-4] days) compared to Division I Power 5 (0 [0-1] days) and Division I Non-Power 5 (0 [0-1] days) institutions (p < 0.001). Likewise, Division II/III athletes (15 [11-22] days) took significantly longer to return to sport after concussion than Division I Power 5 (10 [7-16] days) and Division I Non-Power 5 (11 [7-18.5] days) athletes (p < 0.001). CONCLUSION Division II/III athletes had delayed concussion diagnoses and return to sport timelines compared to Division I athletes. Our results suggest that differences in sports medicine resources across NCAA divisions may influence injury recognition and recovery in collegiate athletes with concussion.
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Affiliation(s)
- Thayne A Munce
- Environmental Influences on Health & Disease Group, Sanford Research, Sioux Falls, South Dakota, USA
| | - Allison D Peplowski
- Environmental Influences on Health & Disease Group, Sanford Research, Sioux Falls, South Dakota, USA
- Department of Biology, University of South Dakota, Vermillion, South Dakota, USA
| | - Thomas G Bowman
- Department of Athletic Training, College of Health Sciences, University of Lynchburg, Lynchburg, Virginia, USA
| | - Patricia M Kelshaw
- Department of Kinesiology, Brain Research and Assessment Initiative of New Hampshire (BRAIN) Laboratory, University of New Hampshire, Durham, New Hampshire, USA
| | - Thomas R Campbell
- School of Rehabilitation Sciences, College of Health Sciences, Old Dominion University, Norfolk, Virginia, USA
| | - Sean B Ahonen
- Intercollegiate Athletics and Community Wellness, Virginia Union University, Richmond, Virginia, USA
| | - Verle D Valentine
- Sanford Orthopedics and Sports Medicine, Sanford Health, Sioux Falls, South Dakota, USA
| | - David X Cifu
- Department of Physical Medicine and Rehabilitation, Virginia Commonwealth University School of Medicine, Richmond, Virginia, USA
| | - Jacob E Resch
- Department of Kinesiology, University of Virginia, Charlottesville, Virginia, USA
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17
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Resch JE, Beidler E, Bowman TJ, Kelshaw T, Larson MJ, Munce TA, Oldham J, Walton SR, Cifu DX. Placing the keystone: the LIMBIC Military and Tactical Athlete Research Study. Brain Inj 2024:1-8. [PMID: 38328943 DOI: 10.1080/02699052.2024.2304861] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2023] [Accepted: 01/09/2024] [Indexed: 02/09/2024]
Abstract
OBJECTIVE The LIMBIC Military and Tactical Athletic Research Study (MATARS) framework was established to confirm and extend understanding of concussion with initial studies driven by clinical data collected between 2015 and 2020 in a collegiate sports setting. The LIMBIC MATARS framework will be leveraged to apply gold-standard and innovative research designs to advance the science of concussion. This manuscript provides the background, methodology, and initial demographic data associated with the LIMBIC MATARS. METHODS Consensus-based common data elements were used to conduct a retrospective chart review, specific to collegiate athletes diagnosed with concussions between 2015 and 2020 at 11 universities. RESULTS A final sample of 1,311 (47.8% female) concussions were diagnosed during the five-year study period from athletes participating in a variety of National Collegiate Athlete Association (NCAA) sports. The LIMBIC MATARS demographic data, align with the NCAA and other pioneering multi-site concussion-related studies in terms of biological sex, race and ethnicity, and sport participation. CONCLUSION This pragmatic, methodological approach was used to address several a priori hypotheses related to concussion, align with other multi-site studies of concussion, and establish a consortium for future investigations.
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Affiliation(s)
- J E Resch
- Department of Kinesiology, University of Virginia, Charlottesville, Virginia, USA
| | - E Beidler
- Department of Athletic Training, Duquesne University, Pittsburgh, Pennsylvania, USA
| | - T J Bowman
- Department of Athletic Training, College of Health Sciences, University of Lynchburg, Lynchburg, Virginia, USA
| | - T Kelshaw
- Department of Kinesiology, University of New Hampshire, Durham, New Hampshire, USA
| | - M J Larson
- Department of Psychology and Neuroscience Center, Brigham Young University, Provo, Utah, USA
| | - T A Munce
- Environmental Influences on Health and Disease Group, Sanford Research, Sioux Falls, South Dakota, USA
| | - J Oldham
- Department of Physical Medicine and Rehabilitation, Virginia Commonwealth University School of Medicine, Richmond, Virginia, USA
| | - S R Walton
- Department of Physical Medicine and Rehabilitation, Virginia Commonwealth University School of Medicine, Richmond, Virginia, USA
| | - D X Cifu
- Department of Physical Medicine and Rehabilitation, Virginia Commonwealth University School of Medicine, Richmond, Virginia, USA
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18
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McNamee M, Anderson LC, Borry P, Camporesi S, Derman W, Holm S, Knox TR, Leuridan B, Loland S, Lopez Frias FJ, Lorusso L, Malcolm D, McArdle D, Partridge B, Schramme T, Weed M. Sport-related concussion research agenda beyond medical science: culture, ethics, science, policy. JOURNAL OF MEDICAL ETHICS 2024:jme-2022-108812. [PMID: 36868564 DOI: 10.1136/jme-2022-108812] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/08/2022] [Accepted: 01/28/2023] [Indexed: 06/18/2023]
Abstract
The Concussion in Sport Group guidelines have successfully brought the attention of brain injuries to the global medical and sport research communities, and has significantly impacted brain injury-related practices and rules of international sport. Despite being the global repository of state-of-the-art science, diagnostic tools and guides to clinical practice, the ensuing consensus statements remain the object of ethical and sociocultural criticism. The purpose of this paper is to bring to bear a broad range of multidisciplinary challenges to the processes and products of sport-related concussion movement. We identify lacunae in scientific research and clinical guidance in relation to age, disability, gender and race. We also identify, through multidisciplinary and interdisciplinary analysis, a range of ethical problems resulting from conflicts of interest, processes of attributing expertise in sport-related concussion, unjustifiably narrow methodological control and insufficient athlete engagement in research and policy development. We argue that the sport and exercise medicine community need to augment the existing research and practice foci to understand these problems more holistically and, in turn, provide guidance and recommendations that help sport clinicians better care for brain-injured athletes.
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Affiliation(s)
- Mike McNamee
- Department of Movement Sciences, KU Leuven, Leuven, Belgium
- School of Sport and Exercise Sciences, Swansea University, Swansea, UK
| | | | - Pascal Borry
- Department of Public Health and Primary Care, Leuven, Leuven, Belgium
| | - Silvia Camporesi
- Global Health & Social Medicine, King's College London, London, UK
- Department of Political Sciences, University of Vienna, Wien, Austria
| | - Wayne Derman
- Institute of Sport & Exercise Medicine, Dept of Exercise, Sport & Lifestyle Medicine, Facuty of Medicine & Health Science, Stellenbosch University, Stellenbosch, South Africa
- IOC Research Center, Stellenbosch, South Africa
| | - Soren Holm
- Centre for Social Ethics and Policy, University of Manchester, Manchester, UK
- Centre for Medical Ethics, University of Oslo, Oslo, Norway
| | | | - Bert Leuridan
- Centre for Philosophical Psychology, University of Antwerp, Antwerpen, Belgium
| | - Sigmund Loland
- Department of Sport and Social Sciences, Norwegian School of Sports Sciences, Oslo, Norway
| | | | - Ludovica Lorusso
- Departament de Psicologia Social, Universitat Autonoma de Barcelona, Barcelona, Spain
| | - Dominic Malcolm
- School of Sport, Exercise and Health Sciences, Loughborough University, Loughborough, UK
| | | | - Brad Partridge
- Faculty of Medicine, The University of Queensland, Saint Lucia, Queensland, Australia
| | - Thomas Schramme
- Department of Philosophy, University of Liverpool Faculty of Humanities and Social Sciences, Liverpool, UK
| | - Mike Weed
- Centre for Sport, Physical Education & Activity Research (spear), Canterbury Christ Church University, Canterbury, UK
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19
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Oldham JR, Bowman TG, Walton SR, Beidler E, Campbell TR, Smetana RM, Munce TA, Larson MJ, Cullum CM, Bushaw MA, Rosenblum DJ, Cifu DX, Resch JE. Sport Type and Risk of Subsequent Injury in Collegiate Athletes Following Concussion: a LIMBIC MATARS Consortium Investigation. Brain Inj 2024:1-9. [PMID: 38317302 DOI: 10.1080/02699052.2024.2310782] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2023] [Accepted: 01/23/2024] [Indexed: 02/07/2024]
Abstract
OBJECTIVE To investigate the association between sport type (collision, contact, non-contact) and subsequent injury risk following concussion in collegiate athletes. MATERIALS AND METHODS This retrospective chart review of 248 collegiate athletes with diagnosed concussions (age: 20.0 ± 1.4 years; height: 179.6 ± 10.9 cm; mass: 79.0 ± 13.6 kg, 63% male) from NCAA athletic programs (n = 11) occurred between the 2015-2020 athletic seasons. Acute injuries that occurred within six months following concussion were evaluated. Subsequent injuries were grouped by lower extremity, upper extremity, trunk, or concussion. The independent variable was sport type: collision, contact, non-contact. A Cox proportional hazard model was used to assess the risk of subsequent injury between sport types. RESULTS Approximately 28% (70/248) of athletes sustained a subsequent acute injury within six months post-concussion. Collision sport athletes had a significantly higher risk of sustaining any injury (HR: 0.41, p < 0.001, 95% CI: 0.28, 0.62), lower extremity (HR: 0.55, p = 0.04, 95% CI: 0.32, 0.97), and upper extremity (HR: 0.41, p = 0.01, 95% CI: 0.20, 0.81) injuries following concussion. No differences between sport types were observed for other injuries. CONCLUSION Collision sport athletes had a higher rate of any subsequent injury, lower, and upper extremity injuries following concussion. Future research should focus on sport-specific secondary injury prevention efforts.
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Affiliation(s)
- Jessie R Oldham
- Department of Physical Medicine and Rehabilitation, Virginia Commonwealth University School of Medicine, Richmond, Virginia, USA
| | - Thomas G Bowman
- Department of Athletic Training, College of Health Sciences, University of Lynchburg, Lynchburg, Virginia, USA
| | - Samuel R Walton
- Department of Physical Medicine and Rehabilitation, Virginia Commonwealth University School of Medicine, Richmond, Virginia, USA
| | - Erica Beidler
- Department of Athletic Training, Duquesne University, Pittsburgh, Pennsylvania, USA
| | - Thomas R Campbell
- College of Health Sciences, Old Dominion University, Norfolk, Virginia, USA
| | - Racheal M Smetana
- Neuropsychology Assessment Clinic, University of Virginia Health, Charlottesville, Virginia, USA
| | - Thayne A Munce
- Environmental Influences on Health & Disease Group, Sanford Research, Sioux Falls, South Dakota, USA
| | - Michael J Larson
- Department of Psychology and Neuroscience Center, Brigham Young University, Provo, Utah, USA
| | - C Munro Cullum
- Departments of Psychiatry, Neurology, and Neurological Surgery, University of Texas Southwestern Medical Center, Dallas, Texas, USA
| | | | - Daniel J Rosenblum
- United States Navy, Virginia Beach, Virginia, USA
- Department of Kinesiology, University of Virginia, Charlottesville, Virginia, USA
| | - David X Cifu
- Department of Physical Medicine and Rehabilitation, Virginia Commonwealth University School of Medicine, Richmond, Virginia, USA
| | - Jacob E Resch
- United States Navy, Virginia Beach, Virginia, USA
- Department of Kinesiology, University of Virginia, Charlottesville, Virginia, USA
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20
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Barnes A, Smulligan K, Wingerson MJ, Little C, Lugade V, Wilson JC, Howell DR. A Multifaceted Approach to Interpreting Reaction Time Deficits After Adolescent Concussion. J Athl Train 2024; 59:145-152. [PMID: 36701688 PMCID: PMC10895397 DOI: 10.4085/1062-6050-0566.22] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
CONTEXT Reaction time (RT) is a critical element of return to participation (RTP), and impairments have been linked to subsequent injury after a concussion. Current RT assessments have limitations in clinical feasibility and in the identification of subtle deficits after concussion symptom resolution. OBJECTIVES To examine the utility of RT measurements (clinical drop stick, simple stimulus-response, single-task Stroop, and dual-task Stroop) to differentiate between adolescents with concussion and uninjured control individuals at initial assessment and RTP. DESIGN Prospective cohort study. SETTING A pediatric sports medicine center associated with a regional tertiary care hospital. PATIENTS OR OTHER PARTICIPANTS Twenty-seven adolescents with a concussion (mean age = 14.8 ± 2.1 years; 52% female; tested 7.0 ± 3.3 days postconcussion) and 21 uninjured control individuals (mean age = 15.5 ± 1.6 years; 48% female). MAIN OUTCOME MEASURE(S) Participants completed the Post-Concussion Symptoms Inventory (PCSI) and a battery of RT tests: clinical drop stick, simple stimulus-response, single-task Stroop, and dual-task Stroop. RESULTS The concussion group demonstrated slower clinical drop stick (β = 58.8; 95% CI = 29.2, 88.3; P < .001) and dual-task Stroop (β = 464.2; 95% CI = 318.4, 610.0; P < .001) RT measures at the initial assessment than the uninjured control group. At 1-month follow up, the concussion group displayed slower clinical drop stick (238.9 ± 25.9 versus 188.1 ± 21.7 milliseconds; P < .001; d = 2.10), single-task Stroop (1527.8 ± 204.5 versus 1319.8 ± 133.5 milliseconds; P = .001; d = 1.20), and dual-task Stroop (1549.9 ± 264.7 versus 1341.5 ± 114.7 milliseconds; P = .002; d = 1.04) RT than the control group, respectively, while symptom severity was similar between groups (7.4 ± 11.2 versus 5.3 ± 6.5; P = .44; d = 0.24). Classification accuracy and area under the curve (AUC) values were highest for the clinical drop stick (85.1% accuracy, AUC = 0.86, P < .001) and dual-task Stroop (87.2% accuracy, AUC = 0.92, P < .002) RT variables at initial evaluation. CONCLUSIONS Adolescents recovering from concussion may have initial RT deficits that persist despite symptom recovery. The clinical drop stick and dual-task Stroop RT measures demonstrated high clinical utility given high classification accuracy, sensitivity, and specificity to detect postconcussion RT deficits and may be considered for initial and RTP assessment.
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Affiliation(s)
- Alice Barnes
- Sports Medicine Center, Children's Hospital Colorado, Aurora
| | - Katherine Smulligan
- Sports Medicine Center, Children's Hospital Colorado, Aurora
- Departments of Orthopedics, University of Colorado School of Medicine, Aurora
| | - Mathew J Wingerson
- Sports Medicine Center, Children's Hospital Colorado, Aurora
- Departments of Orthopedics, University of Colorado School of Medicine, Aurora
| | - Casey Little
- Sports Medicine Center, Children's Hospital Colorado, Aurora
- Departments of Orthopedics, University of Colorado School of Medicine, Aurora
| | - Vipul Lugade
- Division of Physical Therapy, Binghamton University, NY
- Control One LLC, Atlanta, GA
| | - Julie C Wilson
- Sports Medicine Center, Children's Hospital Colorado, Aurora
- Departments of Orthopedics, University of Colorado School of Medicine, Aurora
- Departments of Pediatrics, University of Colorado School of Medicine, Aurora
| | - David R Howell
- Sports Medicine Center, Children's Hospital Colorado, Aurora
- Departments of Orthopedics, University of Colorado School of Medicine, Aurora
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21
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Agoston DV. Traumatic Brain Injury in the Long-COVID Era. Neurotrauma Rep 2024; 5:81-94. [PMID: 38463416 PMCID: PMC10923549 DOI: 10.1089/neur.2023.0067] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/12/2024] Open
Abstract
Major determinants of the biological background or reserve, such as age, biological sex, comorbidities (diabetes, hypertension, obesity, etc.), and medications (e.g., anticoagulants), are known to affect outcome after traumatic brain injury (TBI). With the unparalleled data richness of coronavirus disease 2019 (COVID-19; ∼375,000 and counting!) as well as the chronic form, long-COVID, also called post-acute sequelae SARS-CoV-2 infection (PASC), publications (∼30,000 and counting) covering virtually every aspect of the diseases, pathomechanisms, biomarkers, disease phases, symptomatology, etc., have provided a unique opportunity to better understand and appreciate the holistic nature of diseases, interconnectivity between organ systems, and importance of biological background in modifying disease trajectories and affecting outcomes. Such a holistic approach is badly needed to better understand TBI-induced conditions in their totality. Here, I briefly review what is known about long-COVID/PASC, its underlying-suspected-pathologies, the pathobiological changes induced by TBI, in other words, the TBI endophenotypes, discuss the intersection of long-COVID/PASC and TBI-induced pathobiologies, and how by considering some of the known factors affecting the person's biological background and the inclusion of mechanistic molecular biomarkers can help to improve the clinical management of TBI patients.
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Affiliation(s)
- Denes V. Agoston
- Department of Anatomy, Physiology, and Genetics, School of Medicine, Uniformed Services University, Bethesda, Maryland, USA
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22
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Cecchini AS, McCulloch K, Harrison C, Favorov O, Davila M, Zhang W, Prim J, Krok CDRM. Expanding capabilities to evaluate readiness for return to duty after mTBI: The CAMP study protocol. PLoS One 2024; 19:e0270076. [PMID: 38285693 PMCID: PMC10824418 DOI: 10.1371/journal.pone.0270076] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2022] [Accepted: 03/22/2023] [Indexed: 01/31/2024] Open
Abstract
Physical Therapists affiliated with Intrepid Spirit Centers evaluate and treat Active Duty Service Members (ADSM) who have duty-limiting post-concussion symptoms to improve the ability to perform challenging tasks associated with military service. The Complex Assessment of Military Performance (CAMP) is a test battery that more closely approximates the occupational demands of ADSM without specific adherence to a particular branch of service or military occupational specialty. Subtasks were developed with military collaborators to include high level skills that all service members must be able to perform such as reacting quickly, maintaining visual stability while moving and changing positions, and scanning for, noting, and/or remembering operationally relevant information under conditions of physical exertion. OBJECTIVE The purpose of this observational longitudinal study is to: 1- establish typical performance parameters for ADSM on the CAMP test battery 2- determine the element of the CAMP battery that demonstrate the greatest differences from standard performance and serve as predictors for successful return to duty and 3- develop clinician-facing feedback algorithms and displays and 4-develop materials for clinical dissemination. This ongoing multi-site study is currently funded through the CDMRP and has been approved by the Naval Medical Center Portsmouth IRB. METHODS ADSM undergoing post-concussion rehabilitation at the Intrepid Spirit Centers will be tested within one week of their initial Physical Therapy evaluation and after completing Physical Therapy. Control participants will include males, females, and ADSM from the Special Operations community. Participants will complete an intake form that includes questions about demographics, military service, deployment and concussion history, and profile and duty status. Other measures include those that explore concussion symptoms, sleep quality, post-traumatic stress, and perceptions of resilience. The CAMP includes three separate 10-15 minute tasks. Movement is recorded by wearable inertial sensors and heart rate variability is recorded with a POLAR10 monitor. The "Run-Roll" task requires rapid position changes, combat rolls and quick running forwards and backwards while carrying a simulated weapon. Visual stability before and after the task is also performed. The "Dual-Task Agility" task includes rapid running with and without a weighted vest and a working memory task. The "Patrol Exertion" task requires repeated stepping onto an exercise step while watching a virtual patrol video. Additional tasks include monitoring direction of travel, observing for signs of enemy presence, and reacting to multiple auditory signals embedded in the video. DISCUSSION Measures that evaluate relevant skills are vital to support safe return to duty for ADSM who may be exposed to imminent danger as part of training or mission demands. The CAMP is designed to be an ecologically valid and clinically feasible assessment that may be more sensitive to capturing subtle impairments that impact duty performance as test skills are integrated into dual and multi-tasks that reflect occupational demands. Assessment results may serve as a more robust indicator of readiness for full return to duty after concussion.
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Affiliation(s)
- Amy Seal Cecchini
- The Geneva Foundation, Womack Army Medical Center, Ft. Bragg, NC, United States of America
| | - Karen McCulloch
- Department of Human Movement Science, Division of Physical Therapy, The University of North Carolina at Chapel Hill, Chapel Hill, NC, United States of America
| | - Courtney Harrison
- Department of Human Movement Science, Division of Physical Therapy, The University of North Carolina at Chapel Hill, Chapel Hill, NC, United States of America
| | - Oleg Favorov
- Department of Biomedical Engineering, The University of North Carolina at Chapel Hill, Chapel Hill, NC, United States of America
| | - Maria Davila
- Research Triangle Institue, Research Triangle Park, NC, United States of America
| | - Wanqing Zhang
- Department of Human Movement Science, Division of Physical Therapy, The University of North Carolina at Chapel Hill, Chapel Hill, NC, United States of America
| | - Julianna Prim
- Department of Psychiatry, The University of North Carolina at Chapel Hill, Chapel Hill, NC, United States of America
| | - C. D. R. Michael Krok
- Womack Army Medical Center Intrepid Spirit Clinic, Ft. Bragg, NC, United States of America
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23
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Corwin DJ, Metzger KB, McDonald CC, Pfeiffer MR, Arbogast KB, Master CL. The Variability of Recovery From Pediatric Concussion Using Multimodal Clinical Definitions. Sports Health 2024; 16:79-88. [PMID: 36896665 PMCID: PMC10732108 DOI: 10.1177/19417381231152448] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/11/2023] Open
Abstract
BACKGROUND While concussions are common pediatric injuries, a lack of agreement on a standard definition of recovery creates multiple challenges for clinicians and researchers alike. HYPOTHESIS The percentage of concussed youth deemed recovered as part of a prospective cohort study will differ depending on the recovery definition. STUDY DESIGN Descriptive epidemiologic study of a prospectively enrolled observational cohort. LEVEL OF EVIDENCE Level 3. METHODS Participants aged 11 to 18 years were enrolled from the concussion program of a tertiary care academic center. Data were collected from initial and follow-up clinical visits ≤12 weeks from injury. A total of 10 recovery definitions were assessed: (1) cleared to full return to sports; (2) return to full school; (3) self-reported return to normal; (4) self-reported full return to school; (5) self-reported full return to exercise; (6) symptom return to preinjury state; (7) complete symptom resolution; (8) symptoms below standardized threshold; (9) no abnormal visio-vestibular examination (VVE) elements; and (10) ≤1 abnormal VVE assessments. RESULTS In total, 174 participants were enrolled. By week 4, 63.8% met at least 1 recovery definition versus 78.2% by week 8 versus 88.5% by week 12. For individual measures of recovery at week 4, percent recovered ranged from 5% by self-reported full return to exercise to 45% for ≤1 VVE abnormality (similar trends at 8 and 12 weeks). CONCLUSION There is wide variability in the proportion of youth considered recovered at various points following concussion depending on the definition of recovery, with higher proportions using physiologic examination-based measures and lower proportions using patient-reported measures. CLINICAL RELEVANCE These results further emphasize the need for a multimodal assessment of recovery by clinicians as a single and standardized definition of recovery that captures the broad impact of concussion on a given patient continues to be elusive.
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Affiliation(s)
- Daniel J. Corwin
- Center for Injury Research and Prevention, The Children’s Hospital of Philadelphia, Philadelphia, Pennsylvania
- Division of Emergency Medicine, The Children’s Hospital of Philadelphia, Philadelphia, Pennsylvania
| | - Kristina B. Metzger
- Center for Injury Research and Prevention, The Children’s Hospital of Philadelphia, Philadelphia, Pennsylvania
| | - Catherine C. McDonald
- Center for Injury Research and Prevention, The Children’s Hospital of Philadelphia, Philadelphia, Pennsylvania
- School of Nursing, University of Pennsylvania, Philadelphia, Pennsylvania
| | - Melissa R. Pfeiffer
- Center for Injury Research and Prevention, The Children’s Hospital of Philadelphia, Philadelphia, Pennsylvania
| | - Kristy B. Arbogast
- Center for Injury Research and Prevention, The Children’s Hospital of Philadelphia, Philadelphia, Pennsylvania
- Division of Emergency Medicine, The Children’s Hospital of Philadelphia, Philadelphia, Pennsylvania
| | - Christina L. Master
- Center for Injury Research and Prevention, The Children’s Hospital of Philadelphia, Philadelphia, Pennsylvania
- Sports Medicine and Performance Center, and The Children’s Hospital of Philadelphia, Philadelphia, Pennsylvania
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24
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Burma JS, Lapointe AP, Wilson M, Penner LC, Kennedy CM, Newel KT, Galea OA, Miutz LN, Dunn JF, Smirl JD. Adolescent Sport-Related Concussion and the Associated Neurophysiological Changes: A Systematic Review. Pediatr Neurol 2024; 150:97-106. [PMID: 38006666 DOI: 10.1016/j.pediatrneurol.2023.10.020] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/01/2022] [Revised: 06/20/2023] [Accepted: 10/28/2023] [Indexed: 11/27/2023]
Abstract
BACKGROUND Sport-related concussion (SRC) has been shown to induce cerebral neurophysiological deficits, quantifiable with electroencephalography (EEG). As the adolescent brain is undergoing rapid neurodevelopment, it is fundamental to understand both the short- and long-term ramifications SRC may have on neuronal functioning. The current systematic review sought to amalgamate the literature regarding both acute/subacute (≤28 days) and chronic (>28 days) effects of SRC in adolescents via EEG and the diagnostic accuracy of this tool. METHODS The review was registered within the Prospero database (CRD42021275256). Search strategies were created and input into the PubMed database, where three authors completed all screening. Risk of bias assessments were completed using the Scottish Intercollegiate Guideline Network and Methodological Index for Non-Randomized Studies. RESULTS A total of 128 articles were identified; however, only seven satisfied all inclusion criteria. The studies ranged from 2012 to 2021 and included sample sizes of 21 to 81 participants, albeit only ∼14% of the included athletes were females. The studies displayed low-to-high levels of bias due to the small sample sizes and preliminary nature of most investigations. Although heterogeneous methods, tasks, and analytical techniques were used, 86% of the studies found differences compared with control athletes, in both the symptomatic and asymptomatic phases of SRC. One study used raw EEG data as a diagnostic indicator demonstrating promise; however, more research and standardization are a necessity. CONCLUSIONS Collectively, the findings highlight the utility of EEG in assessing adolescent SRC; however, future studies should consider important covariates including biological sex, maturation status, and development.
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Affiliation(s)
- Joel S Burma
- Cerebrovascular Concussion Lab, Faculty of Kinesiology, University of Calgary, Calgary, Alberta, Canada; Sport Injury Prevention Research Centre, Faculty of Kinesiology, University of Calgary, Calgary, Alberta, Canada; Human Performance Laboratory, Faculty of Kinesiology, University of Calgary, Calgary, Alberta, Canada; Libin Cardiovascular Institute of Alberta, University of Calgary, Calgary, Alberta, Canada; Alberta Children's Hospital Research Institute, University of Calgary, Calgary, Alberta, Canada; Hotchkiss Brain Institute, University of Calgary, Calgary, Alberta, Canada; Integrated Concussion Research Program, University of Calgary, Calgary, Alberta, Canada.
| | - Andrew P Lapointe
- Hotchkiss Brain Institute, University of Calgary, Calgary, Alberta, Canada; Integrated Concussion Research Program, University of Calgary, Calgary, Alberta, Canada; Department of Radiology, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada; Department of Clinical Neurosciences, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada
| | - Megan Wilson
- Faculty of Arts and Social Sciences, Carleton University, Ottawa, Ontario, Canada; Faculty of Arts, University of Alberta, Edmonton, Alberta, Canada
| | - Linden C Penner
- Cerebrovascular Concussion Lab, Faculty of Kinesiology, University of Calgary, Calgary, Alberta, Canada; Sport Injury Prevention Research Centre, Faculty of Kinesiology, University of Calgary, Calgary, Alberta, Canada; Human Performance Laboratory, Faculty of Kinesiology, University of Calgary, Calgary, Alberta, Canada; Libin Cardiovascular Institute of Alberta, University of Calgary, Calgary, Alberta, Canada; Alberta Children's Hospital Research Institute, University of Calgary, Calgary, Alberta, Canada; Hotchkiss Brain Institute, University of Calgary, Calgary, Alberta, Canada; Integrated Concussion Research Program, University of Calgary, Calgary, Alberta, Canada
| | - Courtney M Kennedy
- Cerebrovascular Concussion Lab, Faculty of Kinesiology, University of Calgary, Calgary, Alberta, Canada; Sport Injury Prevention Research Centre, Faculty of Kinesiology, University of Calgary, Calgary, Alberta, Canada; Human Performance Laboratory, Faculty of Kinesiology, University of Calgary, Calgary, Alberta, Canada; Libin Cardiovascular Institute of Alberta, University of Calgary, Calgary, Alberta, Canada; Alberta Children's Hospital Research Institute, University of Calgary, Calgary, Alberta, Canada; Hotchkiss Brain Institute, University of Calgary, Calgary, Alberta, Canada; Integrated Concussion Research Program, University of Calgary, Calgary, Alberta, Canada
| | - Kailey T Newel
- Cerebrovascular Concussion Lab, Faculty of Kinesiology, University of Calgary, Calgary, Alberta, Canada; Sport Injury Prevention Research Centre, Faculty of Kinesiology, University of Calgary, Calgary, Alberta, Canada; Integrated Concussion Research Program, University of Calgary, Calgary, Alberta, Canada; Faculty of Health and Exercise Science, University of British Columbia, Kelowna, British Columbia, Canada
| | - Olivia A Galea
- Cerebrovascular Concussion Lab, Faculty of Kinesiology, University of Calgary, Calgary, Alberta, Canada; Sport Injury Prevention Research Centre, Faculty of Kinesiology, University of Calgary, Calgary, Alberta, Canada; Human Performance Laboratory, Faculty of Kinesiology, University of Calgary, Calgary, Alberta, Canada; Libin Cardiovascular Institute of Alberta, University of Calgary, Calgary, Alberta, Canada; Alberta Children's Hospital Research Institute, University of Calgary, Calgary, Alberta, Canada; Hotchkiss Brain Institute, University of Calgary, Calgary, Alberta, Canada; Integrated Concussion Research Program, University of Calgary, Calgary, Alberta, Canada
| | - Lauren N Miutz
- Cerebrovascular Concussion Lab, Faculty of Kinesiology, University of Calgary, Calgary, Alberta, Canada; Sport Injury Prevention Research Centre, Faculty of Kinesiology, University of Calgary, Calgary, Alberta, Canada; Human Performance Laboratory, Faculty of Kinesiology, University of Calgary, Calgary, Alberta, Canada; Libin Cardiovascular Institute of Alberta, University of Calgary, Calgary, Alberta, Canada; Alberta Children's Hospital Research Institute, University of Calgary, Calgary, Alberta, Canada; Hotchkiss Brain Institute, University of Calgary, Calgary, Alberta, Canada; Integrated Concussion Research Program, University of Calgary, Calgary, Alberta, Canada
| | - Jeff F Dunn
- Alberta Children's Hospital Research Institute, University of Calgary, Calgary, Alberta, Canada; Hotchkiss Brain Institute, University of Calgary, Calgary, Alberta, Canada; Integrated Concussion Research Program, University of Calgary, Calgary, Alberta, Canada; Department of Radiology, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada; Department of Clinical Neurosciences, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada
| | - Jonathan D Smirl
- Cerebrovascular Concussion Lab, Faculty of Kinesiology, University of Calgary, Calgary, Alberta, Canada; Sport Injury Prevention Research Centre, Faculty of Kinesiology, University of Calgary, Calgary, Alberta, Canada; Human Performance Laboratory, Faculty of Kinesiology, University of Calgary, Calgary, Alberta, Canada; Libin Cardiovascular Institute of Alberta, University of Calgary, Calgary, Alberta, Canada; Alberta Children's Hospital Research Institute, University of Calgary, Calgary, Alberta, Canada; Hotchkiss Brain Institute, University of Calgary, Calgary, Alberta, Canada; Integrated Concussion Research Program, University of Calgary, Calgary, Alberta, Canada
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25
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Moore S, Musgrave C, Sandler J, Bradley B, Jones JRA. Early intervention treatment in the first 2 weeks following concussion in adults: A systematic review of randomised controlled trials. Phys Ther Sport 2024; 65:59-73. [PMID: 38065015 DOI: 10.1016/j.ptsp.2023.11.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2023] [Revised: 11/20/2023] [Accepted: 11/22/2023] [Indexed: 01/23/2024]
Abstract
OBJECTIVE International guidelines support a repertoire of therapeutic interventions that may assist recovery following concussion. We aimed to systematically review the efficacy of early pharmacological and non-pharmacological interventions initiated within two weeks of injury on symptoms and functional recovery of adults with concussion. METHODS We conducted a Systematic Review (SR) of Randomised Controlled Trials (RCTs) without meta-analysis utilising the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) guidelines. A comprehensive search was performed of four databases. Study inclusion criteria were adult participants diagnosed with concussion and commencing active intervention within 14 days of injury. RESULTS AND CONCLUSIONS Of 7531 studies identified, 11 were included in the final review. Six studies were rated as high-risk of bias, three with some concerns and two as low-risk of bias. We found no evidence to support specific pharmacotherapeutic management to hasten the natural recovery time-course. Two studies reported significant improvement in selected concussion symptoms following manual therapy (at 48-72 hours post-treatment) or telephone counselling interventions (at 6 months post-injury). No high quality RCTs demonstrate superior effects of early therapeutic interventions on concussion recovery in the first 2 weeks. We advocate future research to examine impacts of health-clinician contact points aligned with symptom-specific interventions.
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Affiliation(s)
- Sonya Moore
- Physiotherapy Department, The University of Melbourne, Parkville, Victoria, Australia.
| | - Chris Musgrave
- Physiotherapy Department, The University of Melbourne, Parkville, Victoria, Australia
| | - Jonathan Sandler
- Physiotherapy Department, The University of Melbourne, Parkville, Victoria, Australia
| | - Ben Bradley
- Physiotherapy Department, The University of Melbourne, Parkville, Victoria, Australia
| | - Jennifer R A Jones
- Physiotherapy Department, The University of Melbourne, Parkville, Victoria, Australia; Physiotherapy Department, Division of Allied Health, Austin Health, Heidelberg, Victoria, Australia; Institute of Breathing and Sleep, Heidelberg, Victoria, Australia
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Karvandi E, Helmy A, Kolias AG, Belli A, Ganau M, Gomes C, Grey M, Griffiths M, Griffiths T, Griffiths P, Holliman D, Jenkins P, Jones B, Lawrence T, McLoughlin T, McMahon C, Messahel S, Newton J, Noad R, Raymont V, Sharma K, Sylvester R, Tadmor D, Whitfield P, Wilson M, Woodberry E, Parker M, Hutchinson PJ. Specialist healthcare services for concussion/mild traumatic brain injury in England: a consensus statement using modified Delphi methodology. BMJ Open 2023; 13:e077022. [PMID: 38070886 PMCID: PMC10729241 DOI: 10.1136/bmjopen-2023-077022] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/23/2023] [Accepted: 11/14/2023] [Indexed: 12/18/2023] Open
Abstract
OBJECTIVE To establish a consensus on the structure and process of healthcare services for patients with concussion in England to facilitate better healthcare quality and patient outcome. DESIGN This consensus study followed the modified Delphi methodology with five phases: participant identification, item development, two rounds of voting and a meeting to finalise the consensus statements. The predefined threshold for agreement was set at ≥70%. SETTING Specialist outpatient services. PARTICIPANTS Members of the UK Head Injury Network were invited to participate. The network consists of clinical specialists in head injury practising in emergency medicine, neurology, neuropsychology, neurosurgery, paediatric medicine, rehabilitation medicine and sports and exercise medicine in England. PRIMARY OUTCOME MEASURE A consensus statement on the structure and process of specialist outpatient care for patients with concussion in England. RESULTS 55 items were voted on in the first round. 29 items were removed following the first voting round and 3 items were removed following the second voting round. Items were modified where appropriate. A final 18 statements reached consensus covering 3 main topics in specialist healthcare services for concussion; care pathway to structured follow-up, prognosis and measures of recovery, and provision of outpatient clinics. CONCLUSIONS This work presents statements on how the healthcare services for patients with concussion in England could be redesigned to meet their health needs. Future work will seek to implement these into the clinical pathway.
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Affiliation(s)
- Elika Karvandi
- Department of Neurosurgery, University of Cambridge, Cambridge, UK
| | - Adel Helmy
- Department of Neurosurgery, University of Cambridge, Cambridge, UK
| | - Angelos G Kolias
- Department of Neurosurgery, University of Cambridge, Cambridge, UK
| | - Antonio Belli
- Inflammation and Ageing, University of Birmingham, Birmingham, UK
| | - Mario Ganau
- Nuffield Department of Clinical Neurosciences, University of Oxford, Oxford, UK
| | - Clint Gomes
- Royal Liverpool University Hospital, Liverpool, UK
- UK Sports Institute, Liverpool, UK
| | - Michael Grey
- School of Sport, Exercise and Health Sciences, Loughborough University, Loughborough, UK
| | - Michael Griffiths
- Department of Clinical Infection, Microbiology and Immunology, Institute of Infection, Veterinary and Ecological Sciences, University of Liverpool, Liverpool, UK
- Department of Paediatric Neurology, Alder-Hey Children's NHS Trust, Liverpool, UK
| | - Timothy Griffiths
- Department of Cognitive Neurology, Newcastle University, Newcastle Upon Tyne, UK
- Institute of Neurology, University College London, London, UK
| | - Philippa Griffiths
- Sunderland & South Tyneside Community Acquired Brain Injury Service, Northumberland Tyne and Wear NHS Foundation Trust, Newcastle upon Tyne, UK
| | - Damian Holliman
- Department of Neurosurgery, Royal Victoria Infirmary, Newcastle upon Tyne, UK
| | - Peter Jenkins
- Wessex Neuroscience Centre, Southampton General Hospital, Southampton, UK
- Imperial College London, London, UK
| | - Ben Jones
- Carnegie Applied Rugby Research (CARR) Centre, Leeds Beckett University-Headingley Campus, Leeds, UK
- England Performance Unit, Rugby Football League Ltd, Leeds, UK
| | - Tim Lawrence
- Nuffield Department of Clinical Neurosciences, University of Oxford, Oxford, UK
| | | | - Catherine McMahon
- Manchester Centre for Clinical Neurosciences (MCCN), Salford Royal Infirmary, Northern Care Alliance, Liverpool, UK
| | - Shrouk Messahel
- Alder Hey Children's Hospital NHS Foundation Trust, Liverpool, UK
| | - Joanne Newton
- Newcastle Upon Tyne Hospitals NHS Foundation Trust, Newcastle Upon Tyne, UK
| | - Rupert Noad
- University Hospitals Plymouth NHS Trust, Plymouth, UK
| | | | - Kanchan Sharma
- Department of Neurology, North Bristol NHS Trust, Westbury on Trym, UK
| | - Richard Sylvester
- National Hospital for Neurology and Neurosurgery, London, London, UK
- Institute of Exercise and Health, University College London, London, UK
| | - Daniel Tadmor
- Carnegie School of Sport, Leeds Beckett University, Leeds, UK
- Medical, Leeds Rhinos Rugby League Club, Leeds, UK
| | | | - Mark Wilson
- Imperial College London, London, UK
- Department of Neurosurgery, Imperial College Healthcare NHS Trust, London, UK
| | - Emma Woodberry
- Department of Neuropsychology, University of Cambridge, Cambridge, UK
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Chou TY, Huang YL, Leung W, Brown CN, Kaminski TW, Norcross MF. Does prior concussion lead to biomechanical alterations associated with lateral ankle sprain and anterior cruciate ligament injury? A systematic review and meta-analysis. Br J Sports Med 2023; 57:1509-1515. [PMID: 37648411 DOI: 10.1136/bjsports-2023-106980] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/11/2023] [Indexed: 09/01/2023]
Abstract
OBJECTIVE To determine whether individuals with a prior concussion exhibit biomechanical alterations in balance, gait and jump-landing tasks with and without cognitive demands that are associated with risk of lateral ankle sprain (LAS) and anterior cruciate ligament (ACL) injury. DESIGN Systematic review and meta-analysis. DATA SOURCES Five electronic databases (Web of Science, Scopus, PubMed, SPORTDiscus and CiNAHL) were searched in April 2023. ELIGIBILITY CRITERIA Included studies involved (1) concussed participants, (2) outcome measures of spatiotemporal, kinematic or kinetic data and (3) a comparison or the data necessary to compare biomechanical variables between individuals with and without concussion history or before and after a concussion. RESULTS Twenty-seven studies were included involving 1544 participants (concussion group (n=757); non-concussion group (n=787)). Individuals with a recent concussion history (within 2 months) had decreased postural stability (g=0.34, 95% CI 0.20 to 0.49, p<0.001) and slower locomotion-related performance (g=0.26, 95% CI 0.11 to 0.41, p<0.001), both of which are associated with LAS injury risk. Furthermore, alterations in frontal plane kinetics (g=0.41, 95% CI 0.03 to 0.79, p=0.033) and sagittal plane kinematics (g=0.30, 95% CI 0.11 to 0.50, p=0.002) were observed in individuals approximately 2 years following concussion, both of which are associated with ACL injury risk. The moderator analyses indicated cognitive demands (ie, working memory, inhibitory control tasks) affected frontal plane kinematics (p=0.009), but not sagittal plane kinematics and locomotion-related performance, between the concussion and non-concussion groups. CONCLUSION Following a recent concussion, individuals display decreased postural stability and slower locomotion-related performance, both of which are associated with LAS injury risk. Moreover, individuals within 2 years following a concussion also adopt a more erect landing posture with greater knee internal adduction moment, both of which are associated with ACL injury risk. While adding cognitive demands to jump-landing tasks affected frontal plane kinematics during landing, the altered movement patterns in locomotion and sagittal plane kinematics postconcussion persisted regardless of additional cognitive demands. PROSPERO REGISTRATION NUMBER CRD42021248916.
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Affiliation(s)
- Tsung-Yeh Chou
- Department of Kinesiology and Applied Physiology, University of Delaware, Newark, Delaware, USA
| | - Yu-Lun Huang
- Department of Physical Education and Sport, National Taiwan Normal University, Taipei, Taiwan
| | - Willie Leung
- Department of Health Sciences and Human Performance, The University of Tampa, Tampa, Florida, USA
| | - Cathleen N Brown
- College of Health, Corvallis, Oregon State University, Corvallis, Oregon, USA
| | - Thomas W Kaminski
- Department of Kinesiology and Applied Physiology, University of Delaware, Newark, Delaware, USA
| | - Marc F Norcross
- College of Health, Corvallis, Oregon State University, Corvallis, Oregon, USA
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Savitz J, Goeckner BD, Ford BN, Kent Teague T, Zheng H, Harezlak J, Mannix R, Tugan Muftuler L, Brett BL, McCrea MA, Meier TB. The effects of cytomegalovirus on brain structure following sport-related concussion. Brain 2023; 146:4262-4273. [PMID: 37070698 PMCID: PMC10545519 DOI: 10.1093/brain/awad126] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2022] [Revised: 03/06/2023] [Accepted: 03/27/2023] [Indexed: 04/19/2023] Open
Abstract
The neurotrophic herpes virus cytomegalovirus is a known cause of neuropathology in utero and in immunocompromised populations. Cytomegalovirus is reactivated by stress and inflammation, possibly explaining the emerging evidence linking it to subtle brain changes in the context of more minor disturbances of immune function. Even mild forms of traumatic brain injury, including sport-related concussion, are major physiological stressors that produce neuroinflammation. In theory, concussion could predispose to the reactivation of cytomegalovirus and amplify the effects of physical injury on brain structure. However, to our knowledge this hypothesis remains untested. This study evaluated the effect of cytomegalovirus serostatus on white and grey matter structure in a prospective study of athletes with concussion and matched contact-sport controls. Athletes who sustained concussion (n = 88) completed MRI at 1, 8, 15 and 45 days post-injury; matched uninjured athletes (n = 73) completed similar visits. Cytomegalovirus serostatus was determined by measuring serum IgG antibodies (n = 30 concussed athletes and n = 21 controls were seropositive). Inverse probability of treatment weighting was used to adjust for confounding factors between athletes with and without cytomegalovirus. White matter microstructure was assessed using diffusion kurtosis imaging metrics in regions previously shown to be sensitive to concussion. T1-weighted images were used to quantify mean cortical thickness and total surface area. Concussion-related symptoms, psychological distress, and serum concentration of C-reactive protein at 1 day post-injury were included as exploratory outcomes. Planned contrasts compared the effects of cytomegalovirus seropositivity in athletes with concussion and controls, separately. There was a significant effect of cytomegalovirus on axial and radial kurtosis in athletes with concussion but not controls. Cytomegalovirus positive athletes with concussion showed greater axial (P = 0.007, d = 0.44) and radial (P = 0.010, d = 0.41) kurtosis than cytomegalovirus negative athletes with concussion. Similarly, there was a significant association of cytomegalovirus with cortical thickness in athletes with concussion but not controls. Cytomegalovirus positive athletes with concussion had reduced mean cortical thickness of the right hemisphere (P = 0.009, d = 0.42) compared with cytomegalovirus negative athletes with concussion and showed a similar trend for the left hemisphere (P = 0.036, d = 0.33). There was no significant effect of cytomegalovirus on kurtosis fractional anisotropy, surface area, symptoms and C-reactive protein. The results raise the possibility that cytomegalovirus infection contributes to structural brain abnormalities in the aftermath of concussion perhaps via an amplification of concussion-associated neuroinflammation. More work is needed to identify the biological pathways underlying this process and to clarify the clinical relevance of this putative viral effect.
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Affiliation(s)
- Jonathan Savitz
- Laureate Institute for Brain Research, Tulsa, OK 74136, USA
- Oxley College of Health Sciences, The University of Tulsa, Tulsa, OK 74119, USA
| | - Bryna D Goeckner
- Department of Biophysics, Medical College of Wisconsin, Milwaukee, WI 53226, USA
| | - Bart N Ford
- Department of Pharmacology and Physiology, Oklahoma State University Center for Health Sciences, Tulsa, OK 74107, USA
| | - T Kent Teague
- Department of Psychiatry, The University of Oklahoma School of Community Medicine, Tulsa, OK 74135, USA
- Department of Surgery, The University of Oklahoma School of Community Medicine, Tulsa, OK 74135, USA
- Department of Pharmaceutical Sciences, University of Oklahoma College of Pharmacy, Tulsa, OK 74135, USA
| | - Haixia Zheng
- Laureate Institute for Brain Research, Tulsa, OK 74136, USA
| | - Jaroslaw Harezlak
- Department of Epidemiology and Biostatistics, School of Public Health-Bloomington, Indiana University, Bloomington, IN 47405, USA
| | - Rebekah Mannix
- Division of Emergency Medicine, Boston Children’s Hospital, Boston, MA 02115, USA
- Department of Pediatrics, Harvard Medical School, Boston, MA 02115, USA
| | - L Tugan Muftuler
- Department of Neurosurgery, Medical College of Wisconsin, Milwaukee, WI 53226, USA
| | - Benjamin L Brett
- Department of Neurosurgery, Medical College of Wisconsin, Milwaukee, WI 53226, USA
- Department of Neurology, Medical College of Wisconsin, Milwaukee, WI 53226, USA
| | - Michael A McCrea
- Department of Neurosurgery, Medical College of Wisconsin, Milwaukee, WI 53226, USA
- Department of Neurology, Medical College of Wisconsin, Milwaukee, WI 53226, USA
| | - Timothy B Meier
- Department of Neurosurgery, Medical College of Wisconsin, Milwaukee, WI 53226, USA
- Department of Biomedical Engineering, Medical College of Wisconsin, Milwaukee, WI 53226, USA
- Department of Cell Biology, Neurobiology and Anatomy, Medical College of Wisconsin, Milwaukee, WI 53226, USA
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Thorne J, Hellewell S, Cowen G, Fitzgerald M. Neuroimaging to enhance understanding of cardiovascular autonomic changes associated with mild traumatic brain injury: a scoping review. Brain Inj 2023; 37:1187-1204. [PMID: 37203154 DOI: 10.1080/02699052.2023.2211352] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2022] [Revised: 04/19/2023] [Accepted: 05/03/2023] [Indexed: 05/20/2023]
Abstract
BACKGROUND Cardiovascular changes, such as altered heart rate and blood pressure, have been identified in some individuals following mild traumatic brain injury (mTBI) and may be related to disturbances of the autonomic nervous system and cerebral blood flow. METHODS We conducted a scoping review according to PRISMA-ScR guidelines across six databases (Medline, CINAHL, Web of Science, PsychInfo, SportDiscus and Google Scholar) to explore literature examining both cardiovascular parameters and neuroimaging modalities following mTBI, with the aim of better understanding the pathophysiological basis of cardiovascular autonomic changes associated with mTBI. RESULTS Twenty-nine studies were included and two main research approaches emerged from data synthesis. Firstly, more than half the studies used transcranial Doppler ultrasound and found evidence of cerebral blood flow impairments that persisted beyond symptom resolution. Secondly, studies utilizing advanced MRI identified microstructural injury within brain regions responsible for cardiac autonomic function, providing preliminary evidence that cardiovascular autonomic changes are a consequence of injury to these areas. CONCLUSION Neuroimaging modalities hold considerable potential to aid understanding of the complex relationship between cardiovascular changes and brain pathophysiology associated with mTBI. However, it is difficult to draw definitive conclusions from the available data due to variability in study methodology and terminology.
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Affiliation(s)
- Jacinta Thorne
- School of Allied Health, Faculty of Health Sciences, Curtin University, Bentley, WA, Australia
- Perron Institute for Neurological and Translational Science, Nedlands, WA, Australia
| | - Sarah Hellewell
- Perron Institute for Neurological and Translational Science, Nedlands, WA, Australia
- Curtin Health Innovation Research Institute, Curtin University, Bentley, WA, Australia
| | - Gill Cowen
- Curtin Health Innovation Research Institute, Curtin University, Bentley, WA, Australia
- Curtin Medical School, Faculty of Health Sciences, Curtin University, Bentley, WA, Australia
| | - Melinda Fitzgerald
- Perron Institute for Neurological and Translational Science, Nedlands, WA, Australia
- Curtin Health Innovation Research Institute, Curtin University, Bentley, WA, Australia
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Corrado C, Willer BS, McPherson JI, Storey EP, Sisto SA, Master CL, Wiebe DJ, Grady MF, Mannix RC, Meehan WP, Leddy JJ, Haider MN. Adolescents With More Oculomotor and Vestibular Signs of Sport-Related Concussion Benefit from Aerobic Exercise: An Exploratory Analysis. J Neurotrauma 2023; 40:1718-1729. [PMID: 36884297 DOI: 10.1089/neu.2022.0225] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/09/2023] Open
Abstract
Abstract Early targeted heart rate (HR) aerobic exercise has been shown to reduce the duration of recovery from sport-related concussion (SRC) as well as the incidence of persistent post-concussive symptoms (PPCS). It is not known, however, if more severe oculomotor and vestibular presentations of SRC benefit from a prescription of aerobic exercise. The current study is an exploratory analysis of two published randomized controlled trials that compared aerobic exercise within 10 days of injury with a placebo-like stretching intervention. Combining the two studies yielded a larger sample size to stratify severity of concussion based on the number of abnormal physical examination signs present at the initial office evaluation, which were confirmed with self-reported symptoms and recovery outcomes. The most discriminant cut-off was between those who had ≤3 oculomotor and vestibular signs and those who had >3 signs. Aerobic exercise (hazard ratio = 0.621 [0.412, 0.936], p = 0.023) reduced recovery times even when controlling for site (hazard ratio = 0.461 [0.303, 0.701], p < 0.001), severity (hazard ratio = 0.528 [0.325, 0.858], p = 0.010) and the interaction term of intervention and severity (hazard ratio = 0.972 [0.495, 1.909], p = 0.935). Adolescents who presented with >3 signs and were assigned to the placebo-like stretching group had a PPCS incidence of 38%, which was the highest of all subgroups (aerobic exercise and ≤3 findings: 8%; stretching and ≤3 findings: 11%; aerobic exercise and >3 findings: 21%). This exploratory study provides pilot evidence that prescribed sub-symptom threshold aerobic exercise treatment early after SRC may be effective for adolescents with more oculomotor and vestibular physical examination signs and should be validated in future adequately powered trials.
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Affiliation(s)
- Cathlyn Corrado
- Department of Orthopedics and Sports Medicine, State University of New York at Buffalo, Buffalo, New York, USA
| | - Barry S Willer
- Department of Psychiatry, State University of New York at Buffalo, Buffalo, New York, USA
| | - Jacob I McPherson
- Department of Rehabilitation Sciences, State University of New York at Buffalo, Buffalo, New York, USA
| | - Eileen P Storey
- Christiana Care, Medicine-Pediatrics Residency Program, Newark, Delaware, USA
| | - Sue Ann Sisto
- Department of Rehabilitation Sciences, State University of New York at Buffalo, Buffalo, New York, USA
| | - Christina L Master
- Sports Medicine and Performance Center, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania, USA
- Department of Pediatrics, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | - Douglas J Wiebe
- University of Michigan Injury Prevention Center, University of Michigan, Ann Arbor, Michigan, USA
| | - Mathew F Grady
- Sports Medicine and Performance Center, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania, USA
- Department of Pediatrics, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | - Rebekah C Mannix
- Brain Injury Center, Boston Children's Hospital, Boston, Massachusetts, USA
- Division of Emergency Medicine, Boston, Massachusetts, USA
| | - William P Meehan
- Brain Injury Center, Boston Children's Hospital, Boston, Massachusetts, USA
| | - John J Leddy
- Department of Orthopedics and Sports Medicine, State University of New York at Buffalo, Buffalo, New York, USA
| | - Mohammad N Haider
- Department of Orthopedics and Sports Medicine, State University of New York at Buffalo, Buffalo, New York, USA
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Halabi C, Norton L, Norton K, Smith WS. Headpulse Biometric Measures Following Concussion in Young Adult Athletes. JAMA Netw Open 2023; 6:e2328633. [PMID: 37566413 PMCID: PMC10422194 DOI: 10.1001/jamanetworkopen.2023.28633] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/06/2023] [Accepted: 06/24/2023] [Indexed: 08/12/2023] Open
Abstract
Importance Concussions are common in sports. Return-to-play protocols can be enhanced by objective biometrics. Objective To characterize temporal changes of headpulse, a digital biometric, in athletes with sports-related concussion; to explore the association of unstructured physical activity with headpulse changes. Design, Setting, and Participants This cohort study included headpulse measurements from players in the highest level of amateur Australian Rules Football in South Australia. Analysis included feasibility and validation phases, with the feasibility cohort recruited between August 5, 2021, and September 10, 2021, and the validation cohort recruited between May 5, 2022, and September 3, 2022. Data were analyzed October 2022 through January 2023. Interventions Cranial accelerometry detected micromovements of the head following cardiac contraction (what we have described as "headpulse"). Headpulse was serially recorded for 1 month in concussed individuals. Main Outcomes and Measures Headpulse waveforms underwent frequency transformation analysis per prespecified algorithm. Result Z scores were calculated. Headpulse Z scores exceeding 2 (2 SDs from control means) met an abnormality threshold. Headpulse sensitivity, timing, and duration of change were determined. Results A total of 59 control and 43 concussed individuals (44 total concussions; 1 control also concussed, 1 concussed individual injured twice) provided headpulse measurements. The feasibility cohort (all male) included 17 control (median [IQR] age, 23 [19-28] years) and 15 concussed individuals (median [IQR] age, 21 [19-23] years). The validation cohort included 25 female (median [IQR] age, 21 [20-22] years) and 17 male (median [IQR] age, 26 [23-29] years) control individuals, and 8 female (median [IQR] age, 28 [20-31] years) and 20 male (median [IQR] age, 21 [19-23] years) concussed individuals. Headpulse reached abnormality threshold in 26 of 32 concussed individuals (81%; 9% on day 0, 50% by day 2, 90% by day 14). Headpulse alterations lasted 14 days longer than symptoms and were exacerbated by return-to-play or unsupervised physical activity. Conclusions and Relevance In this study of 101 amateur Australian Rules Football athletes, the digital headpulse biometric was evaluated in 44 sports-related concussions. Compared with controls, new headpulse changes occurred after concussion; this objective metric may complement return-to-play protocols.
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Affiliation(s)
- Cathra Halabi
- Department of Neurology, University of California, San Francisco
- Weill Institute for Neurosciences, University of California, San Francisco
| | - Lynda Norton
- Alliance for Research in Exercise, Nutrition and Activity (ARENA), Allied Health and Human Performance, University of South Australia, Adelaide, Australia
| | - Kevin Norton
- Alliance for Research in Exercise, Nutrition and Activity (ARENA), Allied Health and Human Performance, University of South Australia, Adelaide, Australia
| | - Wade S. Smith
- Department of Neurology, University of California, San Francisco
- Weill Institute for Neurosciences, University of California, San Francisco
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Powell JR, Hopfinger JB, Giovanello KS, Walton SR, DeLellis SM, Kane SF, Means GE, Mihalik JP. Mild traumatic brain injury history is associated with lower brain network resilience in soldiers. Brain Commun 2023; 5:fcad201. [PMID: 37545546 PMCID: PMC10400114 DOI: 10.1093/braincomms/fcad201] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2023] [Revised: 04/12/2023] [Accepted: 07/26/2023] [Indexed: 08/08/2023] Open
Abstract
Special Operations Forces combat soldiers sustain frequent blast and blunt neurotrauma, most often classified as mild traumatic brain injuries. Exposure to repetitive mild traumatic brain injuries is associated with persistent behavioural, cognitive, emotional and neurological symptoms later in life. Identifying neurophysiological changes associated with mild traumatic brain injury exposure, in the absence of present-day symptoms, is necessary for detecting future neurological risk. Advancements in graph theory and functional MRI have offered novel ways to analyse complex whole-brain network connectivity. Our purpose was to determine how mild traumatic brain injury history, lifetime incidence and recency affected whole-brain graph theoretical outcome measures. Healthy male Special Operations Forces combat soldiers (age = 33.2 ± 4.3 years) underwent multimodal neuroimaging at a biomedical research imaging centre using 3T Siemens Prisma or Biograph MRI scanners in this cross-sectional study. Anatomical and functional scans were preprocessed. The blood-oxygen-level-dependent signal was extracted from each functional MRI time series using the Big Brain 300 atlas. Correlations between atlas regions were calculated and Fisher z-transformed to generate subject-level correlation matrices. The Brain Connectivity Toolbox was used to obtain functional network measures for global efficiency (the average inverse shortest path length), local efficiency (the average global efficiency of each node and its neighbours), and assortativity coefficient (the correlation coefficient between the degrees of all nodes on two opposite ends of a link). General linear models were fit to compare mild traumatic brain injury lifetime incidence and recency. Nonparametric ANOVAs were used for tests on non-normally distributed data. Soldiers with a history of mild traumatic brain injury had significantly lower assortativity than those who did not self-report mild traumatic brain injury (t148 = 2.44, P = 0.016). The assortativity coefficient was significantly predicted by continuous mild traumatic brain injury lifetime incidence [F1,144 = 6.51, P = 0.012]. No differences were observed between recency groups, and no global or local efficiency differences were observed between mild traumatic brain injury history and lifetime incidence groups. Brain networks with greater assortativity have more resilient, interconnected hubs, while those with lower assortativity indicate widely distributed, vulnerable hubs. Greater lifetime mild traumatic brain injury incidence predicted lower assortativity in our study sample. Less resilient brain networks may represent a lack of physiological recovery in mild traumatic brain injury patients, who otherwise demonstrate clinical recovery, more vulnerability to future brain injury and increased risk for accelerated age-related neurodegenerative changes. Future longitudinal studies should investigate whether decreased brain network resilience may be a predictor for long-term neurological dysfunction.
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Affiliation(s)
- Jacob R Powell
- Matthew Gfeller Center, Department of Exercise and Sport Science, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, USA
| | - Joseph B Hopfinger
- Department of Psychology and Neuroscience, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, USA
| | - Kelly S Giovanello
- Department of Psychology and Neuroscience, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, USA
| | - Samuel R Walton
- Physical Medicine and Rehabilitation, School of Medicine, Virginia Commonwealth University, Richmond, VA 23284, USA
| | - Stephen M DeLellis
- Fort Liberty Research Institute, The Geneva Foundation, Tacoma, WA 98402, USA
| | - Shawn F Kane
- Matthew Gfeller Center, Department of Exercise and Sport Science, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, USA
- Department of Family Medicine, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, USA
| | - Gary E Means
- United States Army Special Operations Command, Fort Liberty, NC 28303, USA
| | - Jason P Mihalik
- Correspondence to: Jason P. Mihalik Matthew Gfeller Center, Department of Exercise and Sport Science The University of North Carolina at Chapel Hill, 2201 Stallings-Evans Sports Medicine Center Campus Box 8700, Chapel Hill, NC 27599, USA E-mail:
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Brown JC, Goldszer IM, Brooks MC, Milano NJ. An Evaluation of the Emerging Techniques in Sports-Related Concussion. J Clin Neurophysiol 2023; 40:384-390. [PMID: 36930205 PMCID: PMC10329722 DOI: 10.1097/wnp.0000000000000879] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/18/2023] Open
Abstract
SUMMARY Sports-related concussion is now in public awareness more than ever before. Investigations into underlying pathophysiology and methods of assessment have correspondingly increased at an exponential rate. In this review, we aim to highlight some of the evidence supporting emerging techniques in the fields of neurophysiology, neuroimaging, vestibular, oculomotor, autonomics, head sensor, and accelerometer technology in the setting of the current standard: clinical diagnosis and management. In summary, the evidence we reviewed suggests that (1) head impact sensors and accelerometers may detect possible concussions that would not otherwise receive evaluation; (2) clinical diagnosis may be aided by sideline vestibular, oculomotor, and portable EEG techniques; (3) clinical decisions on return-to-play eligibility are currently not sensitive at capturing the neurometabolic, cerebrovascular, neurophysiologic, and microstructural changes that biomarkers have consistently detected days and weeks after clinical clearance. Such biomarkers include heart rate variability, quantitative electroencephalography, as well as functional, metabolic, and microstructural neuroimaging. The current challenge is overcoming the lack of consistency and replicability of any one particular technique to reach consensus.
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Affiliation(s)
- Joshua C. Brown
- Dept. of Neurology, Medical University of South Carolina
- Dept. of Psychiatry and Behavioral Sciences, Medical University of South Carolina
- Department of Psychiatry and Human Behavior, Department of Neurology, Alpert Medical School of Brown University
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Callahan CE, Stoner L, Zieff GH, Register-Mihalik JK. The Additive Benefits of Aerobic Exercise and Cognitive Training Postconcussion: Current Clinical Concepts. J Athl Train 2023; 58:602-610. [PMID: 35984726 PMCID: PMC10569252 DOI: 10.4085/1062-6050-0186.22] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Concussion induces the rapid onset of a short-lived neurophysiological disturbance that often results in autonomic nervous system dysfunction. This dysfunction affects both cardiovascular functioning and higher cognitive processing, inducing postconcussion clinical symptoms (somatic, cognitive, or emotional or a combination) and functional disturbances (impaired balance, cognition, and visual-vestibular performance). Current concussion rehabilitation paradigms using aerobic exercise may improve concussion symptoms. Additionally, cognitive training-focused rehabilitation interventions may enhance cognitive function postinjury. Though aerobic exercise and cognitive training-based concussion rehabilitation are successful independently, the multifaceted nature of concussion suggests the potential benefit of integrating both to improve concussion outcomes and clinician implementation. To support this clinical recommendation, we critiqued the existing research in which authors investigated aerobic exercise and cognitive training as postconcussion rehabilitation modalities, identified keys gaps in the literature, and proposed a practical clinical recommendation to integrate both modalities during concussion rehabilitation.
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Affiliation(s)
- Christine E. Callahan
- Matthew Gfeller Sport-Related Traumatic Brain Injury Research Center, Department of Exercise and Sport Science, The University of North Carolina at Chapel Hill
- Human Movement Science Curriculum, The University of North Carolina at Chapel Hill
| | - Lee Stoner
- Cardiometabolic Laboratory, Department of Exercise and Sport Science, The University of North Carolina at Chapel Hill
| | - Gabriel H. Zieff
- Human Movement Science Curriculum, The University of North Carolina at Chapel Hill
- Cardiometabolic Laboratory, Department of Exercise and Sport Science, The University of North Carolina at Chapel Hill
| | - Johna K. Register-Mihalik
- Matthew Gfeller Sport-Related Traumatic Brain Injury Research Center, Department of Exercise and Sport Science, The University of North Carolina at Chapel Hill
- Injury Prevention Research Center, The University of North Carolina at Chapel Hill
- STAR Heel Performance Laboratory, Department of Exercise and Sport Science, The University of North Carolina at Chapel Hill
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Putukian M, Purcell L, Schneider KJ, Black AM, Burma JS, Chandran A, Boltz A, Master CL, Register-Mihalik JK, Anderson V, Davis GA, Fremont P, Leddy JJ, Maddocks D, Premji Z, Ronksley PE, Herring S, Broglio S. Clinical recovery from concussion-return to school and sport: a systematic review and meta-analysis. Br J Sports Med 2023; 57:798-809. [PMID: 37316183 DOI: 10.1136/bjsports-2022-106682] [Citation(s) in RCA: 21] [Impact Index Per Article: 21.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/16/2023] [Indexed: 06/16/2023]
Abstract
OBJECTIVE To define the time frames, measures used and modifying factors influencing recovery, return to school/learn (RTL) and return to sport (RTS) after sport-related concussion (SRC). DESIGN Systematic review and meta-analysis. DATA SOURCES 8 databases searched through 22 March 2022. ELIGIBILITY CRITERIA Studies with diagnosed/suspected SRC and interventions facilitating RTL/RTS or investigating the time and modifying factors for clinical recovery. Outcomes included days until symptom free, days until RTL and days until RTS. We documented study design, population, methodology and results. Risk of bias was evaluated using a modified Scottish Intercollegiate Guidelines Network tool. RESULTS 278 studies were included (80.6% cohort studies and 92.8% from North America). 7.9% were considered high-quality studies, while 23.0% were considered high risk of bias and inadmissible. The mean days until symptom free was 14.0 days (95% CI: 12.7, 15.4; I2=98.0%). The mean days until RTL was 8.3 (95% CI: 5.6, 11.1; I2=99.3%), with 93% of athletes having a full RTL by 10 days without new academic support. The mean days until RTS was 19.8 days (95% CI: 18.8, 20.7; I2=99.3%), with high heterogeneity between studies. Several measures define and track recovery, with initial symptom burden remaining the strongest predictor of longer days until RTS. Continuing to play and delayed access to healthcare providers were associated with longer recovery. Premorbid and postmorbid factors (eg, depression/anxiety, migraine history) may modify recovery time frames. Though point estimates suggest that female sex or younger age cohorts take longer to recover, the heterogeneity of study designs, outcomes and overlap in CIs with male sex or older age cohorts suggests that all have similar recovery patterns. CONCLUSION Most athletes have full RTL by 10 days but take twice as long for an RTS. PROSPERO REGISTRATION NUMBER CRD42020159928.
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Affiliation(s)
| | - Laura Purcell
- Department of Pediatrics, McMaster University, Hamilton, Ontario, Canada
| | - Kathryn J Schneider
- Sport Injury Prevention Research Centre, Faculty of Kinesiology, University of Calgary, Calgary, Alberta, Canada
- Alberta Children's Hospital Research Institute and Hotchkiss Brain Institute, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada
| | - Amanda Marie Black
- Sport Injury Prevention Research Centre, Faculty of Kinesiology, University of Calgary, Calgary, Alberta, Canada
| | - Joel S Burma
- Sport Injury Prevention Research Centre, Faculty of Kinesiology, University of Calgary, Calgary, Alberta, Canada
- Alberta Children's Hospital Research Institute and Hotchkiss Brain Institute, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada
| | - Avinash Chandran
- Datalys Center for Sports Injury Research and Prevention, Indianapolis, Indiana, USA
| | - Adrian Boltz
- Michigan Concussion Center, University of Michigan, Ann Arbor, Michigan, USA
| | - Christina L Master
- Childrens Hospital of Philadelphia, University of Pennsylvania Perelman School of Medicine, Philadelphia, Pennsylvania, USA
| | - Johna K Register-Mihalik
- Matthew Center, Department of Exercise and Sport Science, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA
| | - Vicki Anderson
- Clinical Sciences Research, Murdoch Children's Research Institute & Royal Children's Hospital, Melbourne, Victoria, Australia
| | - Gavin A Davis
- Murdoch Children's Research Institute, Melbourne, Victoria, Australia
| | | | - John J Leddy
- UBMD Orthopaedics and Sports Medicine, SUNY Buffalo, Jacobs School of Medicine and Biomedical Sciences, Buffalo, New York, USA
| | - David Maddocks
- Perry Maddocks Trollope Lawyers, Melbourne, Victoria, Australia
| | - Zahra Premji
- Libraries and Cultural Resources, University of Victoria, Victoria, British Columbia, Canada
| | - Paul E Ronksley
- Department of Community Health Sciences, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada
| | - Stanley Herring
- Departments of Rehabilitation Medicine, University of Washington, Seattle, Washington, USA
| | - Steven Broglio
- Michigan Concussion Center, University of Michigan, Ann Arbor, Michigan, USA
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Tabor JB, Brett BL, Nelson L, Meier T, Penner LC, Mayer AR, Echemendia RJ, McAllister T, Meehan WP, Patricios J, Makdissi M, Bressan S, Davis GA, Premji Z, Schneider KJ, Zetterberg H, McCrea M. Role of biomarkers and emerging technologies in defining and assessing neurobiological recovery after sport-related concussion: a systematic review. Br J Sports Med 2023; 57:789-797. [PMID: 37316184 DOI: 10.1136/bjsports-2022-106680] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/05/2023] [Indexed: 06/16/2023]
Abstract
OBJECTIVE Determine the role of fluid-based biomarkers, advanced neuroimaging, genetic testing and emerging technologies in defining and assessing neurobiological recovery after sport-related concussion (SRC). DESIGN Systematic review. DATA SOURCES Searches of seven databases from 1 January 2001 through 24 March 2022 using keywords and index terms relevant to concussion, sports and neurobiological recovery. Separate reviews were conducted for studies involving neuroimaging, fluid biomarkers, genetic testing and emerging technologies. A standardised method and data extraction tool was used to document the study design, population, methodology and results. Reviewers also rated the risk of bias and quality of each study. ELIGIBILITY CRITERIA FOR SELECTING STUDIES Studies were included if they: (1) were published in English; (2) represented original research; (3) involved human research; (4) pertained only to SRC; (5) included data involving neuroimaging (including electrophysiological testing), fluid biomarkers or genetic testing or other advanced technologies used to assess neurobiological recovery after SRC; (6) had a minimum of one data collection point within 6 months post-SRC; and (7) contained a minimum sample size of 10 participants. RESULTS A total of 205 studies met inclusion criteria, including 81 neuroimaging, 50 fluid biomarkers, 5 genetic testing, 73 advanced technologies studies (4 studies overlapped two separate domains). Numerous studies have demonstrated the ability of neuroimaging and fluid-based biomarkers to detect the acute effects of concussion and to track neurobiological recovery after injury. Recent studies have also reported on the diagnostic and prognostic performance of emerging technologies in the assessment of SRC. In sum, the available evidence reinforces the theory that physiological recovery may persist beyond clinical recovery after SRC. The potential role of genetic testing remains unclear based on limited research. CONCLUSIONS Advanced neuroimaging, fluid-based biomarkers, genetic testing and emerging technologies are valuable research tools for the study of SRC, but there is not sufficient evidence to recommend their use in clinical practice. PROSPERO REGISTRATION NUMBER CRD42020164558.
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Affiliation(s)
- Jason B Tabor
- Sport Injury Prevention Research Centre, Faculty of Kinesiology; University of Calgary, Calgary, Alberta, Canada
| | - Benjamin L Brett
- Department of Neurosurgery and Center for Neurotrauma Research, Medical College of Wisconsin, Milwaukee, Wisconsin, USA
| | - Lindsay Nelson
- Department of Neurosurgery and Center for Neurotrauma Research, Medical College of Wisconsin, Milwaukee, Wisconsin, USA
| | - Timothy Meier
- Department of Neurosurgery and Center for Neurotrauma Research, Medical College of Wisconsin, Milwaukee, Wisconsin, USA
| | - Linden C Penner
- Sport Injury Prevention Research Centre, Faculty of Kinesiology; University of Calgary, Calgary, Alberta, Canada
| | - Andrew R Mayer
- The Mind Research Network, University of New Mexico School of Medicine, Albuquerque, New Mexico, USA
| | - Ruben J Echemendia
- Psychology, University of Missouri Kansas City, Kansas City, Missouri, USA
- Psychological and Neurobehavioral Associates, Inc, State College, PA, USA
| | - Thomas McAllister
- Psychiatry, Indiana University School of Medicine, Indianapolis, Indiana, USA
| | - William P Meehan
- Micheli Center for Sports Injury Prevention, Boston Children's Hospital, Boston, Massachusetts, USA
- Boston Children's Hospital, Harvard Medical School, Boston, Massachusetts, USA
| | - Jon Patricios
- Wits Sport and Health (WiSH), School of Clinical Medicine, Faculty of Health Sciences, University of the Witwatersrand South, Johannesburg, South Africa
| | - Michael Makdissi
- Florey Institute of Neuroscience and Mental Health - Austin Campus, Heidelberg, Victoria, Australia
- Australian Football League, Melbourne, Victoria, Australia
| | - Silvia Bressan
- Department of Women's and Children's Health, University of Padova, Padova, Italy
| | - Gavin A Davis
- Murdoch Children's Research Institute, Parkville, Victoria, Australia
| | - Zahra Premji
- Libraries, University of Victoria, Victoria, British Columbia, Canada
| | - Kathryn J Schneider
- Sport Injury Prevention Research Centre, Faculty of Kinesiology; University of Calgary, Calgary, Alberta, Canada
| | - Henrik Zetterberg
- Department of Psychiatry and Neurochemistry, Institute of Neuroscience and Physiology, the Sahlgrenska Academy, University of Gothenburg, Molndal, Sweden
| | - Michael McCrea
- Department of Neurosurgery and Center for Neurotrauma Research, Medical College of Wisconsin, Milwaukee, Wisconsin, USA
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Patricios JS, Schneider KJ, Dvorak J, Ahmed OH, Blauwet C, Cantu RC, Davis GA, Echemendia RJ, Makdissi M, McNamee M, Broglio S, Emery CA, Feddermann-Demont N, Fuller GW, Giza CC, Guskiewicz KM, Hainline B, Iverson GL, Kutcher JS, Leddy JJ, Maddocks D, Manley G, McCrea M, Purcell LK, Putukian M, Sato H, Tuominen MP, Turner M, Yeates KO, Herring SA, Meeuwisse W. Consensus statement on concussion in sport: the 6th International Conference on Concussion in Sport-Amsterdam, October 2022. Br J Sports Med 2023; 57:695-711. [PMID: 37316210 DOI: 10.1136/bjsports-2023-106898] [Citation(s) in RCA: 152] [Impact Index Per Article: 152.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/02/2023] [Indexed: 06/16/2023]
Abstract
For over two decades, the Concussion in Sport Group has held meetings and developed five international statements on concussion in sport. This 6th statement summarises the processes and outcomes of the 6th International Conference on Concussion in Sport held in Amsterdam on 27-30 October 2022 and should be read in conjunction with the (1) methodology paper that outlines the consensus process in detail and (2) 10 systematic reviews that informed the conference outcomes. Over 3½ years, author groups conducted systematic reviews of predetermined priority topics relevant to concussion in sport. The format of the conference, expert panel meetings and workshops to revise or develop new clinical assessment tools, as described in the methodology paper, evolved from previous consensus meetings with several new components. Apart from this consensus statement, the conference process yielded revised tools including the Concussion Recognition Tool-6 (CRT6) and Sport Concussion Assessment Tool-6 (SCAT6, Child SCAT6), as well as a new tool, the Sport Concussion Office Assessment Tool-6 (SCOAT6, Child SCOAT6). This consensus process also integrated new features including a focus on the para athlete, the athlete's perspective, concussion-specific medical ethics and matters related to both athlete retirement and the potential long-term effects of SRC, including neurodegenerative disease. This statement summarises evidence-informed principles of concussion prevention, assessment and management, and emphasises those areas requiring more research.
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Affiliation(s)
- Jon S Patricios
- Wits Sport and Health (WiSH), School of Clinical Medicine, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa
| | - Kathryn J Schneider
- Sport Injury Prevention Research Centre, Faculty of Kinesiology, University of Calgary, Calgary, Alberta, Canada
| | - Jiri Dvorak
- Spine Unit, Schulthess Clinic Human Performance Lab, Zurich, Switzerland
| | - Osman Hassan Ahmed
- Physiotherapy Department, University Hospitals Dorset NHS Foundation Trust, Poole, UK
- The FA Centre for Para Football Research, The Football Association, Burton-Upon-Trent, Staffordshire, UK
| | - Cheri Blauwet
- Department of Physical Medicine and Rehabilitation, Spaulding Rehabilitation/Harvard Medical School, Boston, Massachusetts, USA
- Kelley Adaptive Sports Research Institute, Spaulding Rehabilitation, Boston, Massachusetts, USA
| | - Robert C Cantu
- CTE Center, Boston University School of Medicine, Boston, Massachusetts, USA
- Neurology, Boston University School of Medicine, Boston, Massachusetts, USA
| | - Gavin A Davis
- Murdoch Children's Research Institute, Parkville, Victoria, Australia
- Cabrini Health, Malvern, Victoria, Australia
| | - Ruben J Echemendia
- Psychology, University of Missouri Kansas City, Kansas City, Missouri, USA
- Psychological and Neurobehavioral Associates, Inc, Miami, Florida, USA
| | - Michael Makdissi
- Florey Institute of Neuroscience and Mental Health-Austin Campus, Heidelberg, Victoria, Australia
- La Trobe Sport and Exercise Medicine Research Centre, Melbourne, Victoria, Australia
| | - Michael McNamee
- Department of Movement Sciences, KU Leuven, Leuven, Belgium
- School of Sport and Exercise Medicine, Swansea University, Swansea, UK
| | - Steven Broglio
- Michigan Concussion Center, University of Michigan, Ann Arbor, Michigan, USA
| | - Carolyn A Emery
- Sport Injury Prevention Research Centre, Faculty of Kinesiology, University of Calgary, Calgary, Alberta, Canada
| | - Nina Feddermann-Demont
- University Hospital Zurich, Zurich, Switzerland
- Sports Neuroscience, University of Zurich, Zurich, Switzerland
| | - Gordon Ward Fuller
- School of Health and Related Research, University of Sheffield, Sheffield, South Yorkshire, UK
| | - Christopher C Giza
- Neurosurgery, UCLA Steve Tisch BrainSPORT Program, Los Angeles, California, USA
- Pediatrics/Pediatric Neurology, Mattel Children's Hospital UCLA, Los Angeles, California, USA
| | - Kevin M Guskiewicz
- Matthew Gfeller Center, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA
| | - Brian Hainline
- National Collegiate Athletic Association (NCAA), Indianapolis, Indiana, USA
| | - Grant L Iverson
- Physical Medicine and Rehabilitation, Harvard Medical School, Boston, Massachusetts, USA
- Sports Concussion Program, MassGeneral Hospital for Children, Boston, Massachusetts, USA
| | | | - John J Leddy
- UBMD Orthopaedics and Sports Medicne, SUNY Buffalo, Buffalo, New York, USA
| | - David Maddocks
- Melbourne Neuropsychology Services & Perry Maddocks Trollope Lawyers, Melbourne, Victoria, Australia
| | - Geoff Manley
- Neurosurgery, University of California, San Francisco, San Francisco, California, USA
| | - Michael McCrea
- Neurosurgery, Medical College of Wisconsin, Milwaukee, Wisconsin, USA
| | - Laura K Purcell
- Department of Pediatrics, McMaster University, Hamilton, Ontario, Canada
| | | | - Haruhiko Sato
- Neurosurgery, Seirei Mikatahara Hospital, Hamamatsu, Japan
| | | | - Michael Turner
- International Concussion and Head Injury Research Foundation, London, UK
- University College London, London, UK
| | | | - Stanley A Herring
- Department of Rehabilitation Medicine, Orthopaedics and Sports Medicine, University of Washington, Seattle, Washington, USA
- Department of Neurological Surgery, University of Washington, Seattle, Washington, USA
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Ware JB, Sandsmark DK. Imaging Approach to Concussion. Neuroimaging Clin N Am 2023; 33:261-269. [PMID: 36965944 DOI: 10.1016/j.nic.2023.01.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/20/2023]
Abstract
The acute and long-term neurobiological sequelae of concussion (mild traumatic brain injury [mTBI]) and sub-concussive head trauma have become increasingly apparent in recent decades in part due to neuroimaging research. Although imaging has an established role in the clinical management of mTBI for the identification of intracranial lesions warranting urgent interventions, MR imaging is increasingly employed for the detection of post-traumatic sequelae which carry important prognostic significance. As neuroimaging research continues to elucidate the pathophysiology of TBI underlying prolonged recovery and the development of persistent post-concussive symptoms, there is a strong motivation to translate these techniques into clinical use for improved diagnosis and therapeutic monitoring.
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Affiliation(s)
- Jeffrey B Ware
- Department of Radiology, Neuroradiology Division, University of Pennsylvania, 3400 Spruce Street, Philadelphia, PA 19104, USA.
| | - Danielle K Sandsmark
- Department of Neurology, University of Pennsylvania, 3400 Spruce Street, Philadelphia, PA 19104, USA
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Buckley TA, Bryk KN, Enrique AL, Kaminski TW, Hunzinger KJ, Oldham JR. Clinical Mental Health Measures and Prediction of Postconcussion Musculoskeletal Injury. J Athl Train 2023; 58:401-407. [PMID: 35788664 PMCID: PMC11220908 DOI: 10.4085/1062-6050-0595.21] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
CONTEXT The rate of lower extremity musculoskeletal injury (LE MSK) is elevated after concussion; however, the underlying mechanism has not been elucidated. Physical characteristics have been investigated despite poorer mental health being a common postconcussion complaint and linked to MSKs. OBJECTIVE To evaluate the role of mental health as a predictor of postconcussion LE MSK. DESIGN Case-control study. SETTING Intercollegiate athletic training facility. PATIENTS OR OTHER PARTICIPANTS A total of 67 National Collegiate Athletic Association Division I student-athletes (n = 39 females) who had been diagnosed with a sport-related concussion. MAIN OUTCOME MEASURE(S) The Brief Symptom Inventory-18, Hospital Anxiety and Depression Scale, and Satisfaction With Life Scale (SWLS) measures were completed at baseline (preseason) and on the day participants were cleared for unrestricted return to play (RTP) after a concussion. Two binary logistic regressions were used to predict postconcussion LE MSK within a year, one for the baseline time point and the second for the RTP time point. A 2 (group: LE MSK, no LE MSK)-by-2 (time: baseline, RTP) repeated-measures analysis of variance compared performance between baseline and RTP. RESULTS Subsequent LE MSKs were sustained by 44 participants (65.7%). The only significant predictor of postconcussion LE MSK was the SWLS score at RTP, with Exp(B) = 0.64, indicating that an increased (improved) SWLS score was associated with a lower LE MSK rate. No significant interactions were present between mental health measures and subsequent MSK (P values = .105-.885). CONCLUSIONS Limited associations were evident between postconcussion LE MSK and scores on commonly used measures of anxiety, depression, and satisfaction with life. Reported increased satisfaction with life was associated with a decreased injury risk, which warrants further attention. Our results suggest that these measures of anxiety, depression, and satisfaction with life have limited value in assisting sports medicine clinicians with determining which student-athletes are at elevated risk of postconcussion LE MSK.
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Affiliation(s)
- Thomas A. Buckley
- Department of Kinesiology and Applied Physiology and Interdisciplinary Program in Biomechanics and Movement Science, University of Delaware, Newark
| | - Kelsey N. Bryk
- Department of Kinesiology and Applied Physiology and Interdisciplinary Program in Biomechanics and Movement Science, University of Delaware, Newark
| | - Alexander L. Enrique
- Department of Kinesiology and Applied Physiology and Interdisciplinary Program in Biomechanics and Movement Science, University of Delaware, Newark
| | - Thomas W. Kaminski
- Department of Kinesiology and Applied Physiology and Interdisciplinary Program in Biomechanics and Movement Science, University of Delaware, Newark
| | - Katherine J. Hunzinger
- Department of Kinesiology and Applied Physiology and Interdisciplinary Program in Biomechanics and Movement Science, University of Delaware, Newark
| | - Jessie R. Oldham
- Department of Physical Medicine and Rehabilitation, Virginia Commonwealth University School of Medicine, Richmond
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Callahan CE, Beisecker L, Zeller S, Donnelly KZ. LoveYourBrain Mindset: Feasibility, Acceptability, Usability, and Effectiveness of an Online Yoga, Mindfulness, and Psychoeducation Intervention for People with Traumatic Brain Injury. Brain Inj 2023; 37:373-382. [PMID: 36692090 DOI: 10.1080/02699052.2023.2168062] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
OBJECTIVE Despite the benefits of yoga, mindfulness, and psychoeducation after traumatic brain injury (TBI), no online programming exists. This study investigated the feasibility, acceptability, usability, and effectiveness of the LoveYourBrain Mindset online program for people with TBI. RESEARCH DESIGN Pre-post, retrospective intervention. METHODS LoveYourBrain Mindset is a six-week online yoga, mindfulness, and psychoeducation program with weekly interactive Zoom classes and prerecorded mindfulness tools. Two interactive class types (45-minute group discussion, 75-minute group discussion and gentle yoga) are offered to enhance accessibility. People were eligible if they experienced TBI, were a caregiver, or clinician; ≥15 years old; and capable of gentle exercise and group discussion. We analyzed attendance, program ratings, mindfulness tools utilization, and pre/post-intervention differences in QOL, resilience, emotional/behavioral dysregulation, cognition, and positive affect/well-being. RESULTS Overall, 1539 individuals signed up for LoveYourBrain Mindset with 1093 (71.02%) participating in one/more classes. The mean program rating was 9.09 (SD=1.28). Majority (62.99%) used the mindfulness tools each week. Multiple linear regression models controlling for age, TBI severity, and gender indicated significant improvements in QOL, resilience, emotional/behavioral dysregulation, cognition, and positive affect/well-being (p<0.001). CONCLUSION LoveYourBrain Mindset is feasible, acceptable, usable, and may improve outcomes among people with TBI.
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Affiliation(s)
- Christine E Callahan
- Matthew Gfeller Center, Department of Exercise and Sport Science, University of North Carolina at Chapel Hill, Chapel Hill, North Corlina, USA
- Human Movement Science Curriculum, University of North Carolina at Chapel Hill, Chapel Hill, North Corlina, USA
| | - Ling Beisecker
- Matthew Gfeller Center, Department of Exercise and Sport Science, University of North Carolina at Chapel Hill, Chapel Hill, North Corlina, USA
- Human Movement Science Curriculum, University of North Carolina at Chapel Hill, Chapel Hill, North Corlina, USA
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Heron N, Jones N, Cardwell C, Gomes C. 'If in Doubt, Sit Them Out': How Long to Return to Elite Cycling Competition following a Sports-Related Concussion (SRC)? INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2023; 20:ijerph20085449. [PMID: 37107731 PMCID: PMC10138273 DOI: 10.3390/ijerph20085449] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/16/2023] [Revised: 03/29/2023] [Accepted: 03/30/2023] [Indexed: 05/11/2023]
Abstract
INTRODUCTION A concussion or sports-related concussion (SRC) is a traumatic brain injury induced by biomechanical forces. After a SRC diagnosis is made, a concussed individual must undergo a period away from competition while they return to their baseline level of functioning. The Union Cycliste Internationale (UCI) currently recommend a minimum of 6 days restriction from competitive cycling following a SRC but there is a growing feeling amongst those involved in brain injury research that this period is too short. Therefore, how much time should cyclists be removed from competitive sporting action following a SRC? AIMS To review the time out of competition following the diagnosis of a SRC for elite cyclists within British Cycling (BC). METHODS All medical records for elite cyclists within BC were audited for diagnoses of "concussion" or "sports-related concussions" from January 2017 until September 2022. The days out of competition following the concussion until ready to compete again (that is, returned to full training) was then calculated. All diagnoses and management of SRC were undertaken by the medical team at BC and in-keeping with current international guidelines. RESULTS Between January 2017 and September 2022, there were 88 concussions diagnosed, 54 being males and 8 in para-athletes. The median duration for time out of competition for all concussions was 16 days. There was no statistical difference between males (median 15.5 days) and females (median 17.5 days) for time out of competition (p-value 0.25). The median duration out of competition following a concussion for able-bodied athletes was 16 (80 athletes) compared to 51 days (8 athletes) in para-cyclists, which was not statistically different (p-value 0.39). CONCLUSIONS This is the first study to report SRC concussion recovery times in elite cycling, including para-athletes. Between January 2017 and September 2022, there were 88 concussions diagnosed at BC and the median duration for time out of competition for all concussions was 16 days. There was no statistically significant difference in recovery times between male and females and para- and able-bodied athletes. This data should be used to help establish minimum withdrawal times post-SRC for elite cycling participation and we call on the UCI to review this data when establishing SRC protocols for cycling, with further research required in para-cyclists.
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Affiliation(s)
- Neil Heron
- Centre for Public Health, Queen’s University Belfast, Belfast BT12 6BA, UK
- Medical Department, British Cycling, Manchester M11 4DQ, UK
- School of Medicine, Keele University, Staffordshire ST5 5BG, UK
- Correspondence:
| | - Nigel Jones
- Medical Department, British Cycling, Manchester M11 4DQ, UK
| | | | - Clint Gomes
- Medical Department, British Cycling, Manchester M11 4DQ, UK
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Pelo R, Suttman E, Fino PC, McFarland MM, Dibble LE, Cortez MM. Autonomic dysfunction and exercise intolerance in concussion: a scoping review. Clin Auton Res 2023; 33:149-163. [PMID: 37038012 PMCID: PMC10812884 DOI: 10.1007/s10286-023-00937-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2023] [Accepted: 03/23/2023] [Indexed: 04/12/2023]
Abstract
PURPOSE Concussion commonly results in exercise intolerance, often limiting return to activities. Improved understanding of the underlying mechanisms of post-concussive exercise intolerance could help guide mechanism-directed rehabilitation approaches. Signs of altered cardiovascular autonomic regulation-a potential contributor to exercise intolerance-have been reported following concussion, although it is not clear how these findings inform underlying mechanisms of post-concussive symptoms. Systematic summarization and synthesis of prior work is needed to best understand current evidence, allowing identification of common themes and gaps requiring further study. The purpose of this review was to (1) summarize published data linking exercise intolerance to autonomic dysfunction, and (2) summarize key findings, highlighting opportunities for future investigation. METHODS The protocol was developed a priori, and conducted in five stages; results were collated, summarized, and reported according to PRISMA guidelines. Studies including injuries classified as mild traumatic brain injury (mTBI)/concussion, regardless of mechanism of injury, were included. Studies were required to include both autonomic and exercise intolerance testing. Exclusion criteria included confounding central or peripheral nervous system dysfunction beyond those stemming from the concussion, animal model studies, and case reports. RESULTS A total of 3116 publications were screened; 17 were included in the final review. CONCLUSION There was wide variability in approach to autonomic/exercise tolerance testing, as well as inclusion criteria/testing timelines, which limited comparisons across studies. The reviewed studies support current clinical suspicion of autonomic dysfunction as an important component of exercise intolerance. However, the specific mechanisms of impairment and relationship to symptoms and recovery require additional investigation.
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Affiliation(s)
- Ryan Pelo
- Department of Physical Therapy and Athletic Training, University of Utah, 520 Wakara Way, Salt Lake City, UT, 84108, USA.
| | - Erin Suttman
- Department of Physical Therapy and Athletic Training, University of Utah, 520 Wakara Way, Salt Lake City, UT, 84108, USA
| | - Peter C Fino
- Department of Health and Kinesiology, University of Utah, Salt Lake City, UT, USA
| | - Mary M McFarland
- Eccles Health Sciences Library, University of Utah, Salt Lake City, UT, USA
| | - Leland E Dibble
- Department of Physical Therapy and Athletic Training, University of Utah, 520 Wakara Way, Salt Lake City, UT, 84108, USA
| | - Melissa M Cortez
- Department of Neurology, University of Utah, Salt Lake City, UT, USA
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Hunzinger KJ, Radzak KN, Costantini KM, Swanik CB, Buckley TA. Concussion history is associated with increased lower-extremity injury incidence in Reserve Officers' Training Corps cadets. BMJ Mil Health 2023; 169:112-115. [PMID: 33122400 DOI: 10.1136/bmjmilitary-2020-001589] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2020] [Revised: 09/04/2020] [Accepted: 09/16/2020] [Indexed: 11/04/2022]
Abstract
INTRODUCTION Concussions have been associated with an increased risk of lower-extremity musculoskeletal injury (LE-MSI) in athletes and US Army soldiers, creating an added economic, physical and social burden. Yet, there is a paucity of evidence on this relationship among Reserve Officers' Training Corps (ROTC) cadets, a group which engages in activities with high-injury risk and will subsequently commission as active duty officers. This study aimed to examine the association between concussions and LE-MSI in ROTC cadets. METHODS 125 (83 were male) Army and Air Force ROTC cadets (19.8±2.0 years) from two large state universities' Army and Air Force ROTC programmes participated in this study. Cadets completed a reliable injury history questionnaire to ascertain the following variables of interest: (1) any concussion history, (2) reported concussions, (3) undiagnosed concussions, and (4) potentially unrecognised concussion history and LE-MSI history (eg, ankle sprain, knee sprain or muscle strain). Data were analysed using a χ2 test for association and binary logistic regression to determine ORs. RESULTS Cadets with any concussion history (n=42) had a significantly (p=0.035) higher association with LE-MSI (OR 2.47, 95% CI 1.05 to 5.83) than those without. Cadets who had a reported concussion (n=33) had a significantly (p=0.026) higher association with LE-MSI (OR 2.95, 95% CI 1.11 to 7.84) compared to cadets without. CONCLUSIONS ROTC cadets with a history of diagnosed concussion were more likely to have suffered an LE-MSI than cadets without a concussion history. ROTC cadre should be aware of this relationship and incorporate injury prevention protocols.
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Affiliation(s)
- Katherine J Hunzinger
- Kinesiology and Applied Physiology, University of Delaware, Newark, Delaware, USA
- Interdisciplinary Biomechanics and Movement Science Program, University of Delaware, Newark, Delaware, USA
| | - K N Radzak
- Kinesiology and Nutrition Sciences, University of Nevada Las Vegas, Las Vegas, Nevada, USA
| | - K M Costantini
- Kinesiology and Applied Physiology, University of Delaware, Newark, Delaware, USA
| | - C B Swanik
- Kinesiology and Applied Physiology, University of Delaware, Newark, Delaware, USA
- Interdisciplinary Biomechanics and Movement Science Program, University of Delaware, Newark, Delaware, USA
| | - T A Buckley
- Kinesiology and Applied Physiology, University of Delaware, Newark, Delaware, USA
- Interdisciplinary Biomechanics and Movement Science Program, University of Delaware, Newark, Delaware, USA
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Birrell M, Johnson AH, Brennan JC, Petre BM, Turcotte JJ, Redziniak DE. Risk of Lower Extremity Ligamentous Injury Following Concussion Diagnosis: A TriNetX Database Study. Cureus 2023; 15:e35908. [PMID: 37033530 PMCID: PMC10081812 DOI: 10.7759/cureus.35908] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/08/2023] [Indexed: 04/11/2023] Open
Abstract
Background Concussion is one of the most frequently reported sports-related injuries in the United States; there is evidence that residual deficits in neurocognition may increase the risk of lower extremity musculoskeletal injury after concussion in high school, college, and professional athletes. The purpose of this study is to identify whether similar trends are identified in community-based populations. Methods The TriNetX Research Network database was queried for patients 10-60 years old who experienced an ambulatory or emergency visit from 2018-2020. Cohorts were defined by patients seen for concussion and patients seen for other reasons. These cohorts were then propensity score matched based on significant differences in demographics; after matching, each cohort included 97,708 patients. The propensity score-matched cohorts were then evaluated to identify patients who experienced subsequent lower extremity ligamentous injury within 12 months. Results Patients with a history of concussion were more likely to experience posterior cruciate ligament (PCL) sprain (0.04% vs. 0.02%, risk ratio (RR)=1.79, p=.039), medial collateral ligament (MCL) sprain (0.18% vs. 0.08%, RR=2.355, p<.001), lateral collateral ligament (LCL) sprain (0.05% vs. 0.02%, RR=2.202, p=.003) and ankle sprain (1.05% vs. 0.47%, RR=2.265, p<.001). Conclusion Patients diagnosed with concussion were more likely to experience a lower extremity ligamentous injury when compared with patients who did not have concussion. Patients should be counseled regarding this increased risk and additional neuromuscular evaluation and injury prevention education may be indicated following concussion diagnosis.
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Affiliation(s)
- Morgan Birrell
- Internal Medicine, Anne Arundel Medical Center, Annapolis, USA
| | - Andrea H Johnson
- Orthopedic Research, Anne Arundel Medical Center, Annapolis, USA
| | - Jane C Brennan
- Orthopedic Research, Anne Arundel Medical Center, Annapolis, USA
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Adjusting to Changing Environments: Virtual Preseason SCAT5 Assessment in Canadian Male Youth Football Players. Clin J Sport Med 2023; 33:123-129. [PMID: 36730735 DOI: 10.1097/jsm.0000000000001086] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/25/2022] [Accepted: 09/14/2022] [Indexed: 02/04/2023]
Abstract
OBJECTIVE To provide preseason reference scores for Canadian youth tackle football players on the Sport Concussion Assessment Tool 5 (SCAT5) and to examine whether age, concussion history, and self-reported medical diagnoses are associated with SCAT5 subcomponent performance. DESIGN Cross-sectional study. SETTING Calgary, Alberta. PARTICIPANTS Five hundred one male youth football players (ages 13-18 years) participating in the 2021 season. ASSESSMENT OF RISK FACTORS SCAT5 subcomponents were assessed by age group (13-14, 15-16, 17-18), concussion history (0, 1, 2+, and yes/no), and self-reported diagnoses (headache disorder, attention-deficit/hyperactive disorder, learning disability/dyslexia, and depression, anxiety, or other psychiatric disorder). MAIN OUTCOME MEASURES Virtual video administration (vs traditional in-person testing) of the SCAT5 was completed, and subcomponent scores included total number of symptoms (/22), symptom-severity score (/132), Standardized Assessment of Concussion [orientation (/5), immediate memory (/30), concentration (/5), delayed recall (/10)], and modified Balance Error Scoring System (/30). Kruskal-Wallis, one-way analysis of variance , Mann-Whitney U , or independent t tests were used to assess possible associations depending on number of groups and data normality. RESULTS Virtual SCAT5 assessment scores across all outcomes did not differ by age group or concussion history. The median number of symptoms and median symptom-severity score at baseline was 2, and 173 players (34.5%) reported no symptoms. Median total number of errors on the modified Balance Error Scoring System was 3. Participants with certain self-reported diagnoses (attention-deficit/hyperactive disorder, dyslexia) demonstrated poorer performance on some SCAT5 subcomponents (symptom reporting, Standardized Assessment of Concussion). CONCLUSIONS Baseline SCAT5 performance did not differ by age group or concussion history in male youth football players. Diagnoses of the self-reported disorders examined may be important considerations for interpretation of the SCAT5 assessment.
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Corbin-Berrigan LA, Teel E, Vinet SA, P De Koninck B, Guay S, Beaulieu C, De Beaumont L. The Use of Electroencephalography as an Informative Tool in Assisting Early Clinical Management after Sport-Related Concussion: a Systematic Review. Neuropsychol Rev 2023; 33:144-159. [PMID: 32577950 DOI: 10.1007/s11065-020-09442-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2019] [Accepted: 06/07/2020] [Indexed: 12/21/2022]
Abstract
Sport-related concussion (SRC) is managed primarily through serial clinical evaluations throughout recovery. However, studies suggest that clinical measures may not be suitable to detect subtle alterations in functioning and are limited by numerous internal and external factors. Electroencephalography (EEG) has been used for over eight decades to discern altered function following illnesses and injuries, including traumatic brain injury. This study evaluated the associations between EEG measures and clinical presentation within three-months following SRC. A systematic review of the literature was performed in Medline, Embase, PsycINFO, CINAHL and Web of Science databases following Preferred Reporting Items for Systematic Reviews and Meta Analyses guidelines, yielding a total of 13 peer-reviewed articles. Most studies showed low to moderate bias and moderate to high quality. The majority of the existing literature on the impact of concussion within the first 3 months post-injury suggests that individuals with concussion show altered brain function, with EEG abnormalities outlasting clinical dysfunction. Of all EEG biomarkers evaluated, P300 shows the most promise and should be explored further. Despite the relatively high quality of included articles, significant limitations are still present within this body of literature, including potential conflicts of interest and proprietary algorithms, making it difficult to draw strong and meaningful conclusions on the use of EEG in the early stages of SRC. Therefore, further exploration of the relationship between EEG measures and acute clinical presentation is warranted to determine if EEG provides additional benefits over current clinical assessments and is a feasible tool in clinical settings.
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Affiliation(s)
- Laurie-Ann Corbin-Berrigan
- Université du Québec à Trois-Rivières, Trois-Rivières, Quebec, Canada.,Research Center, CIUSSS du Nord-de-l'Île-de-Montréal, Montréal, Quebec, Canada
| | | | | | - Béatrice P De Koninck
- Research Center, CIUSSS du Nord-de-l'Île-de-Montréal, Montréal, Quebec, Canada.,Université de Montréal, Montréal, Quebec, Canada
| | - Samuel Guay
- Research Center, CIUSSS du Nord-de-l'Île-de-Montréal, Montréal, Quebec, Canada.,Université de Montréal, Montréal, Quebec, Canada
| | | | - Louis De Beaumont
- Research Center, CIUSSS du Nord-de-l'Île-de-Montréal, Montréal, Quebec, Canada. .,Université de Montréal, Montréal, Quebec, Canada.
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Sharma B, Nowikow C, DeMatteo C, Noseworthy MD, Timmons BW. Sex-specific differences in resting-state functional brain activity in pediatric concussion. Sci Rep 2023; 13:3284. [PMID: 36841854 PMCID: PMC9968337 DOI: 10.1038/s41598-023-30195-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2022] [Accepted: 02/17/2023] [Indexed: 02/27/2023] Open
Abstract
Pediatric concussion has a rising incidence and can lead to long-term symptoms in nearly 30% of children. Resting state functional magnetic resonance imaging (rs-fMRI) disturbances are a common pathological feature of pediatric concussion, though no studies have explicitly examined sex-differences with respect to this outcome, precluding a sex-specific understanding of the functional neuropathology of pediatric concussion. Therefore, we performed a secondary data analysis of rs-fMRI data collected on children with concussion (n = 29) recruited from in a pediatric hospital setting, with greater than 12:1 matched control data accessed from the open-source ABIDE-II database. Seed-based and region of interest (ROI) analyses were used to examine sex-based rs-fMRI differences; threshold-free cluster enhancement (TFCE) and a family-wise error (FWE) corrected p-values were used to identify significantly different clusters. In comparing females with concussion to healthy females, groupwise differences were observed irrespective of seed selected. Notably, we observed (in order of largest effect) hypo-connectivity between the anterior cingulate cortex of the salience network and the thalamus and precuneus (TFCE = 1473.5, p-FWE < 0.001) and the cingulate gyrus (TFCE = 769.3, p-FWE = 0.009), and the seed (posterior cingulate cortex (PCC)) of the default mode network and the paracingulate gyrus (TFCE = 1275.7, p-FWE < 0.001), occipital pole right (TFCE = 1045.0, p-FWE = 0.001), and sub-callosal cortex (TFCE = 844.9, p-FWE = 0.005). Hyper-connectivity was observed between the salience network seed and the cerebellum (TFCE = 1719.3, p-FWE < 0.001) and the PCC and the thalamus (TFCE = 1198.3, p-FWE < 0.001), cuneal cortex (1070.9, p-FWE = 0.001), and lateral occipital cortex left (TFCE = 832.8, p-FWE = 0.006). ROI analyses showed 10 and 5 significant clusters of hypo- and hyper-connectivity in females, respectively. Only one cluster of difference was found between males with concussion and healthy males on seed-based analyses, and 3 clusters on ROI analyses. There are alterations in rs-fMRI in females with concussion at one-month post-injury that are minimally present in males, which provides further evidence that recovery timelines in pediatric concussion may differ by sex.
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Affiliation(s)
- Bhanu Sharma
- grid.25073.330000 0004 1936 8227Child Health and Exercise Medicine Program, Department of Pediatrics, McMaster University, 1280 Main Street West, Hamilton, ON L8S4L8 Canada ,grid.416721.70000 0001 0742 7355Imaging Research Centre, St. Joseph’s Healthcare, Hamilton, ON Canada ,grid.25073.330000 0004 1936 8227Department of Electrical & Computer Engineering, McMaster University, Hamilton, Canada
| | - Cameron Nowikow
- grid.416721.70000 0001 0742 7355Imaging Research Centre, St. Joseph’s Healthcare, Hamilton, ON Canada ,grid.25073.330000 0004 1936 8227McMaster School of Biomedical Engineering, McMaster University, Hamilton, Canada
| | - Carol DeMatteo
- grid.25073.330000 0004 1936 8227School of Rehabilitation Science, McMaster University, Hamilton, Canada ,grid.25073.330000 0004 1936 8227CanChild Centre for Childhood Disability Research, McMaster University, Hamilton, Canada
| | - Michael D. Noseworthy
- grid.416721.70000 0001 0742 7355Imaging Research Centre, St. Joseph’s Healthcare, Hamilton, ON Canada ,grid.25073.330000 0004 1936 8227Department of Electrical & Computer Engineering, McMaster University, Hamilton, Canada ,grid.25073.330000 0004 1936 8227McMaster School of Biomedical Engineering, McMaster University, Hamilton, Canada ,grid.25073.330000 0004 1936 8227Department of Radiology, McMaster University, Hamilton, Canada
| | - Brian W. Timmons
- grid.25073.330000 0004 1936 8227Child Health and Exercise Medicine Program, Department of Pediatrics, McMaster University, 1280 Main Street West, Hamilton, ON L8S4L8 Canada ,grid.25073.330000 0004 1936 8227CanChild Centre for Childhood Disability Research, McMaster University, Hamilton, Canada
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Tabor J, La P, Kline G, Wang M, Bonfield S, Machan M, Wynne-Edwards K, Emery C, Debert C. Saliva Cortisol as a Biomarker of Injury in Youth Sport-Related Concussion. J Neurotrauma 2023; 40:296-308. [PMID: 35906800 DOI: 10.1089/neu.2022.0190] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023] Open
Abstract
Increasing rates of sport-related concussion (SRC) in youth impose a significant burden on public health systems and the lives of young athletes. Accurate prediction for those likely to develop persistent post-concussion symptomology (PPCS) using a fluid biomarker, reflecting both acute injury and recovery processes, would provide the opportunity for early intervention. Cortisol, a stress hormone released through the hypothalamic-pituitary-adrenal (HPA) axis following injury, may provide a missing physiological link to clinical recovery. This cohort study investigated the change in saliva cortisol following SRC and the association between cortisol and symptom burden in pediatric ice hockey players. Further, the association between cortisol levels and medical clearance to return to play was explored. In total, cortisol samples from 233 players were included; 165 athletes (23.6% female) provided pre-injury saliva and 68 athletes (19.1% female) provided post-SRC saliva samples for cortisol analysis. Quantile (median) regressions were used to compare cortisol between pre-injury and post-SRC groups, and the association between total symptoms (/22) and symptom severity scores (/132) reported on the Sport Concussion Assessment Tool (SCAT)3/SCAT5 and post-SRC cortisol (adjusting for age, sex, history of concussion, and time from injury to sample collection). Results demonstrated significantly lower saliva cortisol in post-SRC athletes compared with the pre-injury group (β = -0.62, 95% confidence interval [CI; -1.08, -0.16], p = 0.009). Post-SRC cortisol was not significantly associated with the SCAT3/SCAT5 symptom totals or symptom severity scores; however, females were found to report more symptoms (β = 6.95, 95% CI [0.35, 13.55], p = 0.040) and greater symptom severity (β = 23.87, 95% CI [9.58, 38.15], p = 0.002) compared with males. Exploratory time-to-event analysis revealed a point estimate suggesting a potential association between low cortisol levels and days to medical clearance to return to play. Although preliminary, these findings suggest that the HPA axis may be dysregulated post-SRC. Further, our exploratory analysis and case presentation of post-injury outliers highlight the need to further research cortisol as a prognostic biomarker to inform individualized sex-specific care after SRC.
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Affiliation(s)
- Jason Tabor
- Sport Injury Prevention Research Centre, Faculty of Kinesiology, University of Calgary, Calgary, Alberta, Canada.,Hotchkiss Brain Institute, University of Calgary, Calgary, Alberta, Canada.,Alberta Children's Hospital Research Institute, University of Calgary, Calgary, Alberta, Canada
| | - Parker La
- Hotchkiss Brain Institute, University of Calgary, Calgary, Alberta, Canada.,Alberta Children's Hospital Research Institute, University of Calgary, Calgary, Alberta, Canada.,Departments of Pediatrics and Community Health Sciences, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada
| | - Gregory Kline
- Division of Endocrinology, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada
| | - Meng Wang
- Department of Clinical Neurosciences, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada
| | - Stephan Bonfield
- Sport Injury Prevention Research Centre, Faculty of Kinesiology, University of Calgary, Calgary, Alberta, Canada
| | - Matthew Machan
- Hotchkiss Brain Institute, University of Calgary, Calgary, Alberta, Canada
| | - Katherine Wynne-Edwards
- Hotchkiss Brain Institute, University of Calgary, Calgary, Alberta, Canada.,Faculty of Veterinary Medicine, University of Calgary, Calgary, Alberta, Canada
| | - Carolyn Emery
- Sport Injury Prevention Research Centre, Faculty of Kinesiology, University of Calgary, Calgary, Alberta, Canada.,Hotchkiss Brain Institute, University of Calgary, Calgary, Alberta, Canada.,Alberta Children's Hospital Research Institute, University of Calgary, Calgary, Alberta, Canada.,Departments of Pediatrics and Community Health Sciences, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada
| | - Chantel Debert
- Hotchkiss Brain Institute, University of Calgary, Calgary, Alberta, Canada.,Alberta Children's Hospital Research Institute, University of Calgary, Calgary, Alberta, Canada.,Departments of Pediatrics and Community Health Sciences, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada.,Department of Clinical Neurosciences, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada
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Kinesiophobia Is Related to Acute Musculoskeletal Injury Incidence Following Concussion. J Sport Rehabil 2023; 32:145-150. [PMID: 36049743 DOI: 10.1123/jsr.2022-0134] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2022] [Revised: 06/22/2022] [Accepted: 06/23/2022] [Indexed: 02/07/2023]
Abstract
CONTEXT Athletes with a history of sport concussion (SC) have an increased risk of musculoskeletal injury (MSK); however, the underlying mechanisms have yet to be determined. The purpose of our study was to evaluate kinesiophobia in college athletes with or without a time-loss MSK within 180 days of unrestricted return to play following a SC. DESIGN This was a retrospective cohort study within a sports medicine facility. METHODS Participants were eligible if they were diagnosed with a SC, completed the Tampa Scale of Kinesiophobia (TSK), and completed an unrestricted return to play. Fifty-six college athletes (40 men and 16 women) with an average age of 19.5 (1.25) years, height of 183.5 (10.45) cm, and mass of 94.72 (24.65) kg, were included in the study. MSK participants were matched to non-MSK participants 1:1. Demographic and TSK outcome scores were compared using independent t tests. The proportion of participants in each group who scored above the clinical threshold (TSK ≥ 37) was compared using a chi-square analysis. Alpha was set at α = .05. RESULTS The MSK group (31.2 [6.30]) reported similar TSK scores to the matched group (28.9 [3.34]; t54 = 1.70, P = .10, d = 0.45 [-0.08 to 0.97]). A greater proportion of athletes who were diagnosed with an MSK-reported scores above the cutoff (χ2[1] = 6.49, P = .01). CONCLUSIONS Athletes diagnosed with SC had similar kinesiophobia values regardless of MSK status. However, a higher proportion of athletes with a time-loss MSK injury reported a TSK score greater than the clinical cutoff. Our results suggest that factors such as kinesiophobia should be considered following a SC.
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Buckley TA, Chandran A, Mauntel TC, Kerr ZY, Brown DW, Boltz AJ, Herman DC, Hall EE, Lynall RC. Lower Extremity Musculoskeletal Injuries After Concussion in Collegiate Student-Athletes. Am J Sports Med 2023; 51:511-519. [PMID: 36255302 DOI: 10.1177/03635465221125155] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
BACKGROUND An association has been identified between concussion and lower extremity musculoskeletal injury (LEMSKI) after return to sports participation. However, the collegiate student-athlete studies have relied on relatively small single-institution studies, which limits generalizability. PURPOSE To assess odds of, and time to, LEMSKI after concussion in US collegiate athletes, using the National Collegiate Athletic Association (NCAA) Injury Surveillance Program (ISP). STUDY DESIGN Descriptive epidemiology study. METHODS Data from the NCAA ISP during the 2010-2011 through 2019-2020 athletic seasons were considered for analysis. Frequency distributions were examined for details related to the initial and subsequent injuries (injuries to bone, bursa, joint, ligament, muscle, or tendon). Multivariable logistic regression models and random-effects Poisson regression models examined odds of time loss (TL) and non-time loss (NTL) LEMSKI after concussion, as well as the time interval between initial concussion and subsequent LEMSKI in a single athletic season, or initial musculoskeletal injury (MSKI) and subsequent LEMSKI in a single athletic season. Analyses were performed separately for football and other sports. RESULTS A total of 31,556 initial injuries were recorded (football: 11,900; other sports: 19,656), which were followed by 0 or 1 injury in the same season. Overall, first injury type was not a significant predictor of subsequent LEMSKI, although certain contrasts yielded significant estimates. In football, the odds of NTL LEMSKI were higher after concussion than after upper extremity MSKI (UEMSKI; adjusted odds ratio [ORAdj], 1.56; 95% CI, 1.06-2.31). In football, the odds of TL LEMSKI were lower after concussion than after UEMSKI (ORAdj, 0.71; 95% CI, 0.51-0.99). No other significant effect estimates were observed for football or other sports. CONCLUSION First injury type, either concussion or upper extremity, was not associated with an elevated risk of LEMSKI. Specifically, the results of this study did not identify an elevated odds of LEMSKI after a concussion. However, the authors observed greater odds of NTL LEMSKI and lower odds of TL LEMSKI in football.
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Affiliation(s)
- Thomas A Buckley
- Department of Kinesiology and Applied Physiology, University of Delaware, Newark, Delaware, USA.,Biomechanics and Movement Science Interdisciplinary Program, University of Delaware, Newark, Delaware, USA
| | - Avinash Chandran
- Datalys Center for Sports Injury Research and Prevention Inc, Indianapolis, Indiana, USA
| | - Timothy C Mauntel
- DoD-VA Extremity Trauma & Amputation Center of Excellence, Womack Army Medical Center, Fort Bragg, North Carolina, USA
| | - Zachary Yukio Kerr
- Department of Exercise and Sport Science, University of North Carolina, Chapel Hill, North Carolina, USA
| | - Derek W Brown
- Division of Cancer Epidemiology and Genetics, National Cancer Institute, National Institutes of Health, Bethesda, Maryland, USA
| | - Adrian J Boltz
- Michigan Concussion Center, University of Michigan, Ann Arbor, Michigan, USA
| | - Daniel C Herman
- Department of Physical Medicine and Rehabilitation, University of California, Davis, Davis, California, USA
| | - Eric E Hall
- Department of Exercise Science, Elon University, Elon, North Carolina, USA
| | - Robert C Lynall
- Department of Kinesiology, University of Georgia, Athens, Georgia, USA
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