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Jak AJ, Merritt VC, Thomas ML, Witten C, Talbert L, Agyemang A, Pugh MJ. Sex differences in postconcussive symptom reporting in those with history of concussion: Findings from the federal interagency traumatic brain injury research (FITBIR) database. Clin Neuropsychol 2024; 38:1468-1480. [PMID: 38951990 DOI: 10.1080/13854046.2024.2371007] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2023] [Accepted: 06/18/2024] [Indexed: 07/03/2024]
Abstract
Objective: This study investigated influence of biological sex on postconcussive symptoms (PCS) following concussion using the Federal Interagency Traumatic Brain Injury Research (FITBIR) database. Method: All studies with publicly released data as of 4/7/21 that included both males and females, enough information to determine severity of injury consistent with concussion, a measure of PCS, and objective measures of neurocognitive functioning were used. This resulted in 6 studies with a total of 9890 participants (3206 females, 6684 males); 815 participants completed the Neurobehavioral Symptom Inventory (NSI), 471 completed the Rivermead Post-Concussion Symptoms Questionnaire (RPSQ), and 8604 completed the Sport Concussion Assessment Tool-3rd Edition (SCAT 3). Questionnaires were harmonized and the following symptom composite scores were computed: total score, somatic, cognitive, and affective. Data were analyzed using linear mixed-effects models. Results: Females endorsed higher total symptoms relative to males and that military personnel endorsed higher symptoms relative to civilians. Additionally, there was a small but significant interaction effect, such that female military personnel endorsed even higher symptoms than would be predicted by the main effects. Similar patterns were observed for somatic, cognitive, and affective symptom domains. Conclusions: Further understanding sex differences in PCS reporting is key to informing the most appropriate treatment options. Future work will need to examine whether sex differences in symptom reporting is due to sex differences in endorsement styles or genuine differences in symptom presentation, as well as the relationship between study population (e.g., military, civilian, sport) and sex on objective cognitive functioning and other functional outcomes.
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Affiliation(s)
- Amy J Jak
- Department of Psychiatry, University of California, San Diego, USA
| | | | - Michael L Thomas
- Department of Psychology, Colorado State University, Fort Collins, USA
| | - Cody Witten
- Veterans Medical Research Foundation, San Diego, USA
| | - Leah Talbert
- Psychology Department, Brigham Young University, Provo, USA
| | - Amma Agyemang
- Department of Physical Medicine and Rehabilitation, Virginia Commonwealth University, Richmond, USA
| | - Mary Jo Pugh
- School of Medicine, University of Utah, Salt Lake City, USA
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2
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Zhan X, Liu Y, Cecchi NJ, Gevaert O, Zeineh MM, Grant GA, Camarillo DB. Brain Deformation Estimation With Transfer Learning for Head Impact Datasets Across Impact Types. IEEE Trans Biomed Eng 2024; 71:1853-1863. [PMID: 38224520 DOI: 10.1109/tbme.2024.3354192] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2024]
Abstract
OBJECTIVE The machine-learning head model (MLHM) to accelerate the calculation of brain strain and strain rate, which are the predictors for traumatic brain injury (TBI), but the model accuracy was found to decrease sharply when the training/test datasets were from different head impacts types (i.e., car crash, college football), which limits the applicability of MLHMs to different types of head impacts and sports. Particularly, small sizes of target dataset for specific impact types with tens of impacts may not be enough to train an accurate impact-type-specific MLHM. METHODS To overcome this, we propose data fusion and transfer learning to develop a series of MLHMs to predict the maximum principal strain (MPS) and maximum principal strain rate (MPSR). RESULTS The strategies were tested on American football (338), mixed martial arts (457), reconstructed car crash (48) and reconstructed American football (36) and we found that the MLHMs developed with transfer learning are significantly more accurate in estimating MPS and MPSR than other models, with a mean absolute error (MAE) smaller than 0.03 in predicting MPS and smaller than [Formula: see text] in predicting MPSR on all target impact datasets. High performance in concussion detection was observed based on the MPS and MPSR estimated by the transfer-learning-based models. CONCLUSION The MLHMs can be applied to various head impact types for rapidly and accurately calculating brain strain and strain rate. SIGNIFICANCE This study enables developing MLHMs for the head impact type with limited availability of data, and will accelerate the applications of MLHMs.
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3
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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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4
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Liebel SW, Van Pelt KL, Pasquina PF, McAllister TW, McCrea MA, Broglio SP. Sport-Specific Recovery Trajectories for NCAA Collegiate Athletes Following Concussion. Ann Biomed Eng 2023:10.1007/s10439-023-03406-8. [PMID: 37962676 DOI: 10.1007/s10439-023-03406-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2023] [Accepted: 11/07/2023] [Indexed: 11/15/2023]
Abstract
The recovery trajectories of collegiate athletes with sport-related concussion (SRC) are well characterized in contact/collision sports but are less well understood in limited contact sports with lower risk, reducing the ability of clinicians to effectively manage the return-to-play (RTP) process. The current study investigated the time to asymptomatic and RTP across a broad range of male and female collegiate sports and sought to group sports by recovery intervals. Data from the Concussion Assessment, Research and Education (CARE) Consortium included 1049 collegiate athletes who sustained a SRC while participating in game or practice/training of their primary sport. Injury setting and subsequent clinical presentation data were obtained. Survival analysis using the Cox Proportional Hazard model estimated the median recovery times for each sport. Optimal univariate K-means clustering grouped sports into recovery categories. Across all sports, median time to asymptomatic following SRC ranged from 5.9 (female basketball) to 8.6 days (male wrestling). Median RTP protocol duration ranged from 4.9 days (female volleyball) to 6.3 days (male wrestling). Median total RTP days ranged from 11.2 days (female lacrosse) to 16.9 days (male wrestling). Sport clusters based on recovery differences in time to asymptomatic (3) and RTP protocol duration (2) were identified. The findings from this study of a large sample of more than 1000 NCAA collegiate athletes with SRC show there exists ranges in recovery trajectories. Clinicians can thus manage athletes with similar guidelines, with individualized treatment and recovery plans.
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Affiliation(s)
- Spencer W Liebel
- Department of Neurology, Traumatic Brain Injury & Concussion Center, University of Utah School of Medicine, Salt Lake City, UT, USA.
- George E. Wahlen Department of Veterans Affairs Medical Center, Salt Lake City, UT, USA.
| | | | - Paul F Pasquina
- Department of Physical Medicine & Rehabilitation, Uniformed Services University, Bethesda, MD, USA
| | - Thomas W McAllister
- Department of Psychiatry, Indiana University School of Medicine, Indianapolis, IN, USA
| | - Michael A McCrea
- Department of Neurosurgery, Medical College of Wisconsin, Milwaukee, WI, USA
| | - Steven P Broglio
- Michigan Concussion Center, University of Michigan, Ann Arbor, MI, USA
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5
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Plassche GC, Fortney TA, Morrissette C, Korzelius JF, Popkin CA. Fighting in professional ice hockey: it's time for a change. PHYSICIAN SPORTSMED 2023; 51:405-413. [PMID: 35549610 DOI: 10.1080/00913847.2022.2078170] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/30/2022] [Accepted: 05/05/2022] [Indexed: 10/18/2022]
Abstract
Ice hockey has long been defined by a level of violence not seen in other sports. The rough-and-tough vigilante nature of the game was often employed as a method of enticing fans. Play in the National Hockey League (NHL) evolved throughout the 20th century as the rules governing it did. The nuances of what was allowed on the ice was slowly defined, but the league always fell short of an outright ban on fighting. Notably, the NHL allows fighting while international and Olympic leagues do not. Proponents of fighting's continued presence in the NHL argue that it can attract fans, facilitate momentum changes, help win games, and allows for social regulation on the ice. However, analyses of these theories have found little definitive evidence, calling the utility of fighting into question. The economics of fighting in hockey reveal high salary payouts, increased cost of injury, and a lack of correlation with ticket sales. Additionally, there is a concern for concussions sustained during fighting which has the potential for long term, detrimental mental health effects for athletes. In this analysis, we explore the history and evolution of fighting in the NHL, as well as the reasons behind its continued presence in the game, the risks associated with fighting, and the economics behind it all. Based upon these bodies of evidence, we make a proposal regarding the future of fighting in the NHL.
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Affiliation(s)
- Grace C Plassche
- Center for Shoulder, Elbow and Sports Medicine, Department of Orthopedic Surgery, New York Presbyterian/Columbia University Irving Medical Center, New York, USA
| | - Thomas A Fortney
- Center for Shoulder, Elbow and Sports Medicine, Department of Orthopedic Surgery, New York Presbyterian/Columbia University Irving Medical Center, New York, USA
| | - Cole Morrissette
- Center for Shoulder, Elbow and Sports Medicine, Department of Orthopedic Surgery, New York Presbyterian/Columbia University Irving Medical Center, New York, USA
| | - John F Korzelius
- Center for Shoulder, Elbow and Sports Medicine, Department of Orthopedic Surgery, New York Presbyterian/Columbia University Irving Medical Center, New York, USA
| | - Charles A Popkin
- Center for Shoulder, Elbow and Sports Medicine, Department of Orthopedic Surgery, New York Presbyterian/Columbia University Irving Medical Center, New York, USA
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Zhan X, Li Y, Liu Y, Cecchi NJ, Raymond SJ, Zhou Z, Vahid Alizadeh H, Ruan J, Barbat S, Tiernan S, Gevaert O, Zeineh MM, Grant GA, Camarillo DB. Machine-learning-based head impact subtyping based on the spectral densities of the measurable head kinematics. JOURNAL OF SPORT AND HEALTH SCIENCE 2023; 12:619-629. [PMID: 36921692 PMCID: PMC10466194 DOI: 10.1016/j.jshs.2023.03.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/29/2022] [Revised: 12/06/2022] [Accepted: 02/16/2023] [Indexed: 05/26/2023]
Abstract
BACKGROUND Traumatic brain injury can be caused by head impacts, but many brain injury risk estimation models are not equally accurate across the variety of impacts that patients may undergo, and the characteristics of different types of impacts are not well studied. We investigated the spectral characteristics of different head impact types with kinematics classification. METHODS Data were analyzed from 3262 head impacts from lab reconstruction, American football, mixed martial arts, and publicly available car crash data. A random forest classifier with spectral densities of linear acceleration and angular velocity was built to classify head impact types (e.g., football, car crash, mixed martial arts). To test the classifier robustness, another 271 lab-reconstructed impacts were obtained from 5 other instrumented mouthguards. Finally, with the classifier, type-specific, nearest-neighbor regression models were built for brain strain. RESULTS The classifier reached a median accuracy of 96% over 1000 random partitions of training and test sets. The most important features in the classification included both low- and high-frequency features, both linear acceleration features and angular velocity features. Different head impact types had different distributions of spectral densities in low- and high-frequency ranges (e.g., the spectral densities of mixed martial arts impacts were higher in the high-frequency range than in the low-frequency range). The type-specific regression showed a generally higher R2 value than baseline models without classification. CONCLUSION The machine-learning-based classifier enables a better understanding of the impact kinematics spectral density in different sports, and it can be applied to evaluate the quality of impact-simulation systems and on-field data augmentation.
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Affiliation(s)
- Xianghao Zhan
- Department of Bioengineering, Stanford University, Stanford, CA 94305, USA
| | - Yiheng Li
- Department of Biomedical Data Science, Stanford University, Stanford, CA 94305, USA
| | - Yuzhe Liu
- Department of Bioengineering, Stanford University, Stanford, CA 94305, USA.
| | - Nicholas J Cecchi
- Department of Bioengineering, Stanford University, Stanford, CA 94305, USA
| | - Samuel J Raymond
- Department of Bioengineering, Stanford University, Stanford, CA 94305, USA
| | - Zhou Zhou
- Department of Bioengineering, Stanford University, Stanford, CA 94305, USA
| | | | - Jesse Ruan
- Ford Motor Company, 3001 Miller Rd, Dearborn, MI 48120, USA
| | - Saeed Barbat
- Ford Motor Company, 3001 Miller Rd, Dearborn, MI 48120, USA
| | | | - Olivier Gevaert
- Department of Biomedical Data Science, Stanford University, Stanford, CA 94305, USA
| | - Michael M Zeineh
- Department of Radiology, Stanford University, Stanford, CA 94305, USA
| | - Gerald A Grant
- Department of Neurosurgery, Stanford University, Stanford, CA 94305, USA
| | - David B Camarillo
- Department of Bioengineering, Stanford University, Stanford, CA 94305, USA
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7
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Eliason PH, Galarneau JM, Kolstad AT, Pankow MP, West SW, Bailey S, Miutz L, Black AM, Broglio SP, Davis GA, Hagel BE, Smirl JD, Stokes KA, Takagi M, Tucker R, Webborn N, Zemek R, Hayden A, Schneider KJ, Emery CA. Prevention strategies and modifiable risk factors for sport-related concussions and head impacts: a systematic review and meta-analysis. Br J Sports Med 2023; 57:749-761. [PMID: 37316182 DOI: 10.1136/bjsports-2022-106656] [Citation(s) in RCA: 16] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/25/2023] [Indexed: 06/16/2023]
Abstract
OBJECTIVES To evaluate prevention strategies, their unintended consequences and modifiable risk factors for sport-related concussion (SRC) and/or head impact risk. DESIGN This systematic review and meta-analysis was registered on PROSPERO (CRD42019152982) and conducted according to Preferred Reporting Items for Systematic Reviews and Meta-Analyses guidelines. DATA SOURCES Eight databases (MEDLINE, CINAHL, APA PsycINFO, Cochrane (Systematic Review and Controlled Trails Registry), SPORTDiscus, EMBASE, ERIC0 were searched in October 2019 and updated in March 2022, and references searched from any identified systematic review. ELIGIBILITY CRITERIA Study inclusion criteria were as follows: (1) original data human research studies, (2) investigated SRC or head impacts, (3) evaluated an SRC prevention intervention, unintended consequence or modifiable risk factor, (4) participants competing in any sport, (5) analytic study design, (6) systematic reviews and meta-analyses were included to identify original data manuscripts in reference search and (7) peer-reviewed. Exclusion criteria were as follows: (1) review articles, pre-experimental, ecological, case series or case studies and (2) not written in English. RESULTS In total, 220 studies were eligible for inclusion and 192 studies were included in the results based on methodological criteria as assessed through the Scottish Intercollegiate Guidelines Network high ('++') or acceptable ('+') quality. Evidence was available examining protective gear (eg, helmets, headgear, mouthguards) (n=39), policy and rule changes (n=38), training strategies (n=34), SRC management strategies (n=12), unintended consequences (n=5) and modifiable risk factors (n=64). Meta-analyses demonstrated a protective effect of mouthguards in collision sports (incidence rate ratio, IRR 0.74; 95% CI 0.64 to 0.89). Policy disallowing bodychecking in child and adolescent ice hockey was associated with a 58% lower concussion rate compared with bodychecking leagues (IRR 0.42; 95% CI 0.33 to 0.53), and evidence supports no unintended injury consequences of policy disallowing bodychecking. In American football, strategies limiting contact in practices were associated with a 64% lower practice-related concussion rate (IRR 0.36; 95% CI 0.16 to 0.80). Some evidence also supports up to 60% lower concussion rates with implementation of a neuromuscular training warm-up programme in rugby. More research examining potentially modifiable risk factors (eg, neck strength, optimal tackle technique) are needed to inform concussion prevention strategies. CONCLUSIONS Policy and rule modifications, personal protective equipment, and neuromuscular training strategies may help to prevent SRC. PROSPERO REGISTRATION NUMBER CRD42019152982.
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Affiliation(s)
- Paul H Eliason
- Sport Injury Prevention Research Centre, Faculty of Kinesiology, University of Calgary, Calgary, Alberta, Canada
| | - Jean-Michel Galarneau
- Sport Injury Prevention Research Centre, Faculty of Kinesiology, University of Calgary, Calgary, Alberta, Canada
| | - Ash T Kolstad
- Sport Injury Prevention Research Centre, Faculty of Kinesiology, University of Calgary, Calgary, Alberta, Canada
| | - M Patrick Pankow
- Sport Injury Prevention Research Centre, Faculty of Kinesiology, University of Calgary, Calgary, Alberta, Canada
| | | | - Stuart Bailey
- School of Applied Sciences, Edinburgh Napier University, Edinburgh, UK
| | - Lauren Miutz
- Health and Sport Science, University of Dayton, Dayton, Ohio, USA
| | - Amanda Marie Black
- Sport Injury Prevention Research Centre, Faculty of Kinesiology, University of Calgary, Calgary, Alberta, Canada
| | | | - Gavin A Davis
- Murdoch Children's Research Institute, University of Melbourne, Melbourne, Victoria, Australia
| | - Brent E Hagel
- Departments of Paediatrics and Community Health Sciences, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada
| | - Jonathan D Smirl
- Sport Injury Prevention Research Centre, Faculty of Kinesiology, University of Calgary, Calgary, Alberta, Canada
| | - Keith A Stokes
- Centre for Health and Injury and Illness Prevention in Sport, University of Bath, Bath, UK
| | - Michael Takagi
- Murdoch Children's Research Institute, University of Melbourne, Melbourne, Victoria, Australia
| | - Ross Tucker
- School of Management Studies, University of Cape Town, Rondebosch, South Africa
| | - Nick Webborn
- School of Sport, Exercise and Health Sciences, Loughborough University, Loughborough, UK
| | - Roger Zemek
- Pediatrics and Emergency Medicine, Children's Hospital of Eastern Ontario, Ottawa, Ontario, Canada
| | - Alix Hayden
- Libraries and Cultural Resources, University of Calgary, Calgary, Alberta, Canada
| | - Kathryn J Schneider
- Sport Injury Prevention Research Centre, Faculty of Kinesiology, University of Calgary, Calgary, Alberta, Canada
| | - Carolyn A Emery
- Sport Injury Prevention Research Centre, Faculty of Kinesiology, University of Calgary, Calgary, Alberta, Canada
- Departments of Paediatrics and Community Health Sciences, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada
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8
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Roberts HW. Sports mouthguard overview: Materials, fabrication techniques, existing standards, and future research needs. Dent Traumatol 2023; 39:101-108. [PMID: 36436198 DOI: 10.1111/edt.12809] [Citation(s) in RCA: 14] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2022] [Revised: 10/21/2022] [Accepted: 10/25/2022] [Indexed: 11/28/2022]
Abstract
Sports mouthguards are proven devices that reduce both the probability of and damage to orofacial tissues. While commonly used, clinicians may be unaware of the different sports mouthguard materials, proposed fabrication techniques, design recommendations, and newer digital fabrication methods. An overview of existing sports mouthguard standards is presented. It identifies that identify that the present requirements, while historically chosen in good faith, appear to be arbitrarily selected and not from clinical evidence-based derived data. In addition, identified sports mouthguard heterogeneous testing and data acquisition methods distinguishes that little possibility is afforded for the correlation of results. Furthermore, updated evidence with concussion prevention and/or alleviation is presented with evidence provided by sports mouthguard imbedded technology. The need for continued research is stressed to provide evidence-based data for concussion alleviation/prevention, digital fabrication methods and materials, and clinically based information for the revision of existing standards.
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9
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Wait TJ, Eck AG, Loose T, Drumm A, Kolaczko JG, Stevanovic O, Boublik M. Median Time to Return to Sports After Concussion Is Within 21 Days in 80% of Published Studies. Arthroscopy 2023; 39:887-901. [PMID: 36574536 DOI: 10.1016/j.arthro.2022.11.029] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/14/2022] [Accepted: 11/17/2022] [Indexed: 11/27/2022]
Abstract
PURPOSE To perform a systematic review of the literature and evaluate the return to play (RTP) time frame after a concussion diagnosis. Our secondary purpose was to analyze and compare different prognostic variables affecting concussions, time to return to school, time to symptom resolution of concussive symptoms, and time each patient spent in the RTP protocol. METHODS A PubMed, Scopus, Medline, Embase, and Cochrane Library database literature review was performed in August 2022. The studies needed to report, in days, the length of time a patient/athlete was removed from play due to concussion management. The Risk of Bias in Non-Randomized Studies of Interventions tool was used for risk of bias for each study, and Methodological Index for Non-Randomized Studies criteria were used for quality assessment. RESULTS There were 65 studies included in the systematic review and a total of 21,966 patients evaluated. The RTP time intervals ranged from 1 to 1,820 days, with 80.7% of the median RTP time frames for each study within 21 days. Preconcussion risk factors for prolonged RTP included female sex, younger age, presence of psychiatric disorders, and history of previous concussion. Postconcussion risk factors included severe symptom scores at initial clinic visit, loss of consciousness, nonelite athletes, and delayed removal from competition. The most common sports resulting in concussion were contact sports, most commonly football and soccer. Median time to return to school was 3 to 23 days. Median time to symptom resolution ranged from 2 to 11 days. Median time in RTP protocol was 1 to 6 days. CONCLUSIONS Median time to return to sports after concussion is within 21 days in 80% of published studies. LEVEL OF EVIDENCE IV, systematic review of Level I to IV studies.
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Affiliation(s)
- Trevor J Wait
- University of Colorado - Steadman Hawkins Clinic of Denver, Englewood, Colorado, U.S.A..
| | - Andrew G Eck
- Department of Orthopaedics, UT Health San Antonio, San Antonio, Texas, U.S.A
| | - Tyler Loose
- University of Washington School of Medicine, Seattle, Washington, U.S.A
| | - Amelia Drumm
- University of Colorado School of Medicine, Englewood, Colorado, U.S.A
| | - Jensen G Kolaczko
- University of Colorado - Steadman Hawkins Clinic of Denver, Englewood, Colorado, U.S.A
| | - Ognjen Stevanovic
- University of Colorado - Steadman Hawkins Clinic of Denver, Englewood, Colorado, U.S.A
| | - Martin Boublik
- University of Colorado - Steadman Hawkins Clinic of Denver, Englewood, Colorado, U.S.A
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10
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Abed V, Hawk GS, Akarakian R, Stone AV. Epidemiological analysis of concussions in youth ice hockey players: A national emergency room database study. Am J Emerg Med 2023; 67:130-134. [PMID: 36871481 DOI: 10.1016/j.ajem.2023.02.023] [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: 01/04/2023] [Revised: 02/15/2023] [Accepted: 02/21/2023] [Indexed: 03/06/2023] Open
Abstract
PURPOSE To evaluate the epidemiology of concussions in youth ice hockey players. METHODS The National Electronic Injury Surveillance System (NEISS) database was used to gather data. Concussions occurring during ice hockey participation in youth patients (4-21 years old) from 2012 to 2021 was gathered. Concussion mechanisms were grouped into 7 categories: head-to-player, head-to-puck, head-to-ice, head-to-board/glass, head-to-stick, head-to-goal post, and unknown. Hospitalization rates were also tabulated. Linear regression models were used to assess changes in yearly concussion and hospitalization rates over the study period. Results from these models were reported using parameter estimates [with 95% confidence intervals (CI)] and the estimated Pearson correlation coefficient. Additionally, logistic regression was used to model the risk of hospitalization across the different cause categories. RESULTS A total of 819 ice hockey related concussions were analyzed between 2012 and 2021. The average age of our cohort was 13.4 years, with 89.3% (n = 731) of concussions occurring in males. The incidence of head-to-ice, head-to-board/glass, head-to-player, and head-to-puck concussion mechanisms decreased significantly over the study period (slope estimate = -2.1 concussions/year [CI: (-3.9, -0.2)], r = -0.675, p = 0.032), (slope estimate = -2.7 concussions/year [CI: (-4.3, -1.2)], r = -0.816, p = 0.004), (slope estimate = -2.2 concussions/year [CI: (-3.4, -1.0)], r = -0.832, p = 0.003), and (slope estimate = -0.4 concussions/year [CI: (-0.62, -0.09)], r = -0.768, p = 0.016), respectively. Majority of patients were discharged from the emergency department (ED) to their home, as only 20 people (2.4%) were hospitalized over our study period. The majority of concussions were due to head-to-ice (n = 285, 34.8%), followed by head-to-board/glass (n = 217, 26.5%) and head-to-player (n = 207, 25.3%). The most common cause for hospitalizations due to concussions was head-to-board/glass (n = 7, 35%), followed by head-to-player (n = 6, 30%) and head-to-ice (n = 5, 25%). CONCLUSION The most common mechanism of youth ice hockey concussions was head-to-ice in our 10-year study period, while head-to-board/glass was the most common cause of hospitalizations. IRB: This project did not require review by the institutional review board.
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Affiliation(s)
- Varag Abed
- Department of Orthopaedic Surgery and Sports Medicine, University of Kentucky, United States of America.
| | - Gregory S Hawk
- Department of Statistics, University of Kentucky, United States of America.
| | - Roy Akarakian
- Department of Emergency Medicine, Keck School of Medicine of USC, United States of America.
| | - Austin V Stone
- Department of Orthopaedic Surgery and Sports Medicine, University of Kentucky, United States of America.
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11
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Hunzinger KJ, Cameron KL, Roach MH, Jackson JC, McGinty GT, Robb JB, Susmarski AJ, Estevez CA, Broglio SP, McAllister TW, McCrea M, Pasquina PF, Buckley TA. Baseline concussion assessment performance by sex in military service academy rugby players: findings from the CARE Consortium. BMJ Mil Health 2023:e002358. [PMID: 36804739 DOI: 10.1136/military-2023-002358] [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: 01/25/2023] [Accepted: 02/08/2023] [Indexed: 02/19/2023]
Abstract
BACKGROUND Normative student-athlete concussion assessment data may not be appropriate for service academy members (SAMs), particularly rugby players, because of the uniqueness of their academic/military training environment. Having accurate baseline data for this population is important because of their high risk for concussion and frequent lack of assigned sports medicine professional. The primary purpose of this study was to characterise baseline performance on a concussion assessment battery, with secondary purpose to determine effect of sex and concussion history on these measures among SAM rugby players. METHODS 601 rugby-playing SAMs (19.3±1.5 years, 37.9% female) completed baseline concussion assessments: the Sport Concussion Assessment Tool (SCAT) Symptom and Symptom Severity Checklist, Standard Assessment of Concussion (SAC) and a neuropsychological test (either ImPACT (Immediate Post Concussion Assessment and Cognitive Testing) or ANAM (Automated Neuropsychological Assessment Metrics)). Groups were compared using an independent samples t-test or Mann-Whitney U test. A 2 (sex) × 2 (concussion history) ANOVA was conducted to determine the effects of sex and concussion history on outcomes. RESULTS Women reported greater SCAT total symptoms (3.3 vs 2.8, p<0.001, r=0.143) and symptom severities (5.7 vs 4.3, p<0.001, r=0.139), and performed worse on ImPACT Visual Memory (79.3 vs 82.6, p=0.002, r=0.144) than men. Women performed better than men on SAC (28.0 vs 27.7, p=0.03, r=0.088), ImPACT Reaction Time Composite (0.59 vs 0.61, p=0.04, r=0.092) and ANAM Code Substitution Delayed (64.3 vs 61.5, p=0.04, d=0.433). Individuals with a history of concussion reported lower ImPACT Symptom Severity (2.6 vs 4.2, p=0.02, r=0.110). There was no interaction between concussion history and sex on outcomes. CONCLUSIONS These findings provide reference data for SAM rugby players on baseline assessments and to help in clinical decision-making when managing sports-related concussion in absence of baseline data.
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Affiliation(s)
- Katherine J Hunzinger
- Biostatistics, Epidemiology, and Informatics, University of Pennsylvania Perelman School of Medicine, Philadelphia, Pennsylvania, USA
- Penn Injury Science Center, University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | - K L Cameron
- Keller Army Community Hospital, West Point, New York, USA
| | - M H Roach
- DoD-VA Extremity Trauma and Amputation Center of Excellence, Research & Surveillance Division, Fort Bragg, North Carolina, USA
- Clinical Investigation, Womack Army Medical Center, Fort Bragg, North Carolina, USA
| | - J C Jackson
- United States Air Force Academy, USAF Academy, Colorado, USA
| | - G T McGinty
- United States Air Force Academy, USAF Academy, Colorado, USA
| | - J B Robb
- 10th Medical Group, United States Air Force Academy, USAF Academy, Colorado, USA
| | - A J Susmarski
- Orthopedic Sports Medicine, United States Naval Academy, Annapolis, Maryland, USA
| | - C A Estevez
- Physical Therapy, United States Coast Guard Academy, New London, Connecticut, USA
| | - S P Broglio
- Michigan Concussion Center, University of Michigan, Ann Arbor, Michigan, USA
| | - T W McAllister
- Psychiatry, Indiana University School of Medicine, Indianapolis, Indiana, USA
| | - M McCrea
- Neurosurgery, Medical College of Wisconsin, Milwaukee, Wisconsin, USA
| | - P F Pasquina
- Walter Reed National Military Medical Center, Uniformed Services University of the Health Sciences, Bethesda, Maryland, USA
| | - T A Buckley
- Kinesiology & Applied Physiology, University of Delaware, Newark, Delaware, USA
- Interdisciplinary Program in Biomechanics and Movement Science, University of Delaware, Newark, Delaware, USA
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12
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Cordingley DM, Cornish SM. Efficacy of aerobic exercise following concussion: a narrative review. Appl Physiol Nutr Metab 2023; 48:5-16. [PMID: 36423352 DOI: 10.1139/apnm-2022-0139] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
Concussion is a type of mild traumatic brain injury which results in symptoms within the physical, cognitive, emotional, and sleep domains. Historically, guidelines established by expert opinion have recommended rest during the initial stages of recovery following a concussion until symptom resolution. However, recent recommendations have shifted to advise an initial period of 24-48 h of rest immediately following concussion with the gradual introduction of light-to-moderate intensity aerobic exercise thereafter. Given the relatively recent transition in recommendations, the aim of this review is to provide an overview of the current literature on the efficacy of aerobic exercise following concussion. The current literature is limited to studies assessing the impact of standardized aerobic exercise following concussion. Upon review, literature suggests participating in aerobic exercise below the point of symptom exacerbation is safe in both the acute and chronic post-concussion symptom stages of recovery and does not delay time to medical clearance. Future large-scale randomized controlled trials assessing the impact of aerobic exercise and differences between males and females would help support the current evidence suggesting aerobic exercise could improve time to recovery following concussion and identify any sex differences in response. As well, future studies with the purpose of identifying optimal aerobic exercise volume and intensity in the treatment of concussion could improve the specificity of the current guidelines.
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Affiliation(s)
- Dean M Cordingley
- Pan Am Clinic Foundation, Winnipeg, MB R3M 3E4 Canada
- Applied Health Sciences, Winnipeg, MB R3T 2N2, Canada
| | - Stephen M Cornish
- Applied Health Sciences, Winnipeg, MB R3T 2N2, Canada
- Faculty of Kinesiology and Recreation Management, Winnipeg, MB R3T 2N2, Canada
- Centre for Aging, University of Manitoba, Winnipeg, MB R3T 2N2, Canada
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13
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Schmidt JD, Broglio SP, Knight K, Leeds D, Lynall RC, D'Lauro C, Register-Mihalik J, Kroshus E, McCrea M, McAllister TW, Kerr ZY, Hoy A, Kelly L, Master C, Ortega J, Port N, Campbell CD, Svoboda CSJ, Putukian M, Chrisman SPD, Langford D, McGinty G, Jackson JC, Cameron KL, James Susmarski A, DiFiori J, Goldman JT, Benjamin H, Buckley T, Kaminski T, Clugston JR, O'Donnell PG, Feigenbaum L, Eckner JT, Mihalik JP, Anderson S, Kontos A, Brooks MA, Miles C, Lintner L. Optimizing Concussion Care Seeking: A Longitudinal Analysis of Recovery. Am J Sports Med 2023; 51:214-224. [PMID: 36412549 DOI: 10.1177/03635465221135771] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
BACKGROUND Approximately half of concussions go undisclosed and therefore undiagnosed. Among diagnosed concussions, 51% to 64% receive delayed medical care. Understanding the influence of undiagnosed concussions and delayed medical care would inform medical and education practices. PURPOSE To compare postconcussion longitudinal clinical outcomes among (1) individuals with no concussion history, all previous concussions diagnosed, and ≥1 previous concussion undiagnosed, as well as (2) those who have delayed versus immediate symptom onset, symptom reporting, and removal from activity after concussion. STUDY DESIGN Cohort study; Level of evidence, 2. METHODS Participants included 2758 military academy cadets and intercollegiate athletes diagnosed with concussion in the CARE Consortium. We determined (1) each participant's previous concussion diagnosis status self-reported at baseline (no history, all diagnosed, ≥1 undiagnosed) and (2) whether the participant had delayed or immediate symptom onset, symptom reporting, and removal from activity. We compared symptom severities, cognition, balance, and recovery duration at baseline, 24 to 48 hours, date of asymptomatic status, and date of unrestricted return to activity using tests of parallel profiles. RESULTS The ≥1 undiagnosed concussion group had higher baseline symptom burdens (P < .001) than the other 2 groups and poorer baseline verbal memory performance (P = .001) than the all diagnosed group; however, they became asymptomatic and returned to activity sooner than those with no history. Cadets/athletes who delayed symptom reporting had higher symptom burdens 24 to 48 hours after injury (mean ± SE; delayed, 28.8 ± 0.8; immediate, 20.6 ± 0.7), took a median difference of 2 days longer to become asymptomatic, and took 3 days longer to return to activity than those who had immediate symptom reporting. For every 30 minutes of continued participation after injury, days to asymptomatic status increased 8.1% (95% CI, 0.3%-16.4%). CONCLUSION Clinicians should expect that cadets/athletes who delay reporting concussion symptoms will have acutely higher symptom burdens and take 2 days longer to become asymptomatic. Educational messaging should emphasize the clinical benefits of seeking immediate care for concussion-like symptoms.
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Affiliation(s)
- Julianne D Schmidt
- UGA Concussion Research Laboratory and Department of Kinesiology, University of Georgia, Athens, Georgia, USA
| | - Steven P Broglio
- Michigan Concussion Center and School of Kinesiology, University of Michigan, Ann Arbor, Michigan, USA
| | - Kristen Knight
- Department of Radiology and Biomedical Imaging, University of California, San Francisco, California, USA
| | - Daniel Leeds
- Computer and Information Sciences, Fordham University, New York, New York, USA
| | - Robert C Lynall
- UGA Concussion Research Laboratory and Department of Kinesiology, University of Georgia, Athens, Georgia, USA
| | - Christopher D'Lauro
- Department of Behavioral Sciences and Leadership, United States Air Force Academy, Colorado Springs, Colorado, USA
| | - Johna Register-Mihalik
- Matthew Gfeller Research Center and STAR Heel Performance Laboratory, Department of Exercise and Sport Science, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA
| | - Emily Kroshus
- Department of Pediatrics, University of Washington, and Center for Child Health, Behavior and Development, Seattle Children's Research Institute, Seattle, Washington, USA
| | - Michael McCrea
- Department of Neurosurgery, Medical College of Wisconsin, Milwaukee, Wisconsin, USA
| | - Tom W McAllister
- Department of Psychiatry, Indiana University School of Medicine, Indianapolis, Indiana, USA
| | - Zachary Y Kerr
- Department of Exercise and Sport Science, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA
| | | | - April Hoy
- School of Behavioral and Applied Sciences, Azusa Pacific University, Azusa, California, USA
| | - Louise Kelly
- Department of Exercise Science, California Lutheran University, Thousand Oaks, California, USA
| | - Christina Master
- Division of Orthopedics, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania, USA
| | - Justus Ortega
- Department of Kinesiology and Recreation Administration, Humboldt State University, Humbolt, California, USA
| | - Nicholas Port
- School of Optometry, Indiana University, Bloomington, Indiana, USA
| | | | | | - Margot Putukian
- Athletic Medicine, Princeton University, Princeton, New Jersey, USA
| | - Sara P D Chrisman
- Center for Child Health, Behavior and Development, Seattle Children's Research Institute, Seattle, Washington, USA
| | - Dianne Langford
- Lewis Katz School of Medicine, Temple University, Philadelphia, Pennsylvania, USA
| | - Gerald McGinty
- United States Air Force Academy, Air Force Academy, Colorado, USA
| | | | - Kenneth L Cameron
- Keller Army Hospital, United States Military Academy, West Point, New York, USA
| | - Adam James Susmarski
- Department Head Brigade Orthopaedics and Sports Medicine, United States Naval Academy, Annapolis, Maryland, USA
| | - John DiFiori
- University of California, Los Angeles, Los Angeles, California, USA
| | - Joshua T Goldman
- Departments of Family Medicine and Orthopaedic Surgery, University of California, Los Angeles, Los Angeles, California, USA
| | - Holly Benjamin
- Department of Rehabilitation Medicine and Pediatrics, University of Chicago, Chicago, Illinois, USA
| | - Thomas Buckley
- Department of Kinesiology and Applied Physiology, University of Delaware, Newark, Delaware, USA
| | - Thomas Kaminski
- Department of Kinesiology and Applied Physiology, University of Delaware, Newark, Delaware, USA
| | - James R Clugston
- Community Health and Family Medicine, University of Florida, Gainesville, Florida, USA
| | | | - Luis Feigenbaum
- Department of Physical Therapy, Miller School of Medicine, University of Miami, Coral Gables, Florida, USA
| | - James T Eckner
- Department of Physical Medicine and Rehabilitation, University of Michigan, Ann Arbor, Michigan, USA
| | - Jason P Mihalik
- Department of Exercise and Sport Science, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA
| | | | - Anthony Kontos
- Department of Orthopaedic Surgery, University of Pittsburgh, Pittsburgh, Pennsylvania, USA
| | - M Alison Brooks
- Department of Orthopedics, University of Wisconsin, Madison, Wisconsin, USA
| | - Christopher Miles
- Department of Family and Community Medicine, Wake Forest University, Winston-Salem, North Carolina, USA
| | - Laura Lintner
- Winston-Salem State University, Winston-Salem, North Carolina, USA.,Investigation performed at the University of Georgia, Athens, Georgia, USA
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14
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Esser T, Gruber C, Bürkner A, Buchmann N, Minzlaff P, Prodinger PM. [Traumatic brain injuries in winter sports : An overview based on the winter sports skiing, snowboarding and ice hockey]. ORTHOPADIE (HEIDELBERG, GERMANY) 2022; 51:920-928. [PMID: 36227361 DOI: 10.1007/s00132-022-04318-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 09/14/2022] [Indexed: 06/16/2023]
Abstract
In winter sports, skiers, snowboarders and ice hockey players have the highest risk of traumatic brain injuries (TBI). In skiing/snowboarding severe TBIs are of concern; in ice hockey, repetitive minor TBIs are frequent. The main causes of TBI in recreational skiing are collisions with trees; in professionals falls due to technical or tactical mistakes are the main causes. In ice hockey 10-15% of all injuries are due to a sports-related concussion (SRC), mostly caused by player-opponent contact. The pathomechanism in TBI is a combination of rotational and linear acceleration during head impact, which causes a diffuse axonal injury. Long-term complications such as neurodegenerative diseases and functional deficits are of relevance. Prevention by wearing helmets is effective, but less effective in TBI/SRC than in focal injuries.
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Affiliation(s)
- T Esser
- Abteilung für Unfallchirurgie und Orthopädie, Krankenhaus Agatharied, Norbert Kerkel Platz, 83734, Hausham, Deutschland
| | - C Gruber
- Abteilung für Unfallchirurgie und Orthopädie, Krankenhaus Agatharied, Norbert Kerkel Platz, 83734, Hausham, Deutschland
| | - A Bürkner
- Abteilung für Unfallchirurgie und Orthopädie, Krankenhaus Agatharied, Norbert Kerkel Platz, 83734, Hausham, Deutschland
| | - N Buchmann
- Abteilung für Unfallchirurgie und Orthopädie, Krankenhaus Agatharied, Norbert Kerkel Platz, 83734, Hausham, Deutschland
| | - P Minzlaff
- Abteilung für Unfallchirurgie und Orthopädie, Krankenhaus Agatharied, Norbert Kerkel Platz, 83734, Hausham, Deutschland
| | - P M Prodinger
- Abteilung für Unfallchirurgie und Orthopädie, Krankenhaus Agatharied, Norbert Kerkel Platz, 83734, Hausham, Deutschland.
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15
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Gaudet CE, Iverson GL, Kissinger-Knox A, Van Patten R, Cook NE. Clinical Outcome Following Concussion Among College Athletes with a History of Prior Concussion: A Systematic Review. SPORTS MEDICINE - OPEN 2022; 8:134. [PMID: 36308612 PMCID: PMC9617993 DOI: 10.1186/s40798-022-00528-6] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/21/2022] [Accepted: 10/16/2022] [Indexed: 11/06/2022]
Abstract
BACKGROUND There is long-standing interest in, and concern about, whether collegiate athletes with a history of concussion will experience worse clinical outcomes, or prolonged recovery, should they sustain a subsequent concussion. OBJECTIVES This systematic review examined the association between prior concussion history and clinical outcomes following a subsequent sport-related concussion among college-age student athletes. STUDY DESIGN Systematic review. METHODS We screened 5,118 abstracts and 619 full-text articles that were appraised to determine whether they met inclusion criteria. We utilized a likelihood heuristic to assess the probability of observing a specific number of statistically significant and nonsignificant studies reporting an association between concussion history and clinical outcomes. We conducted a narrative synthesis of the study findings. RESULTS Sixteen studies met the inclusion criteria. Thirteen studies reported the number of participants with a history of prior concussions (≥ 1), which totaled 1690 of 4573 total participants (on average 37.0% of study participants; median = 46.0%, range 5.6-63.8%). On the Newcastle-Ottawa Quality Assessment Scale, the risk of bias ratings ranged from 3 to 9 (mean = 5.4, SD = 1.4). Across all studies, 43.8% (k = 7/16) reported at least one statistically significant result among primary analyses showing an association between concussion history and worse clinical outcome. A minority of studies reporting on symptom duration (4/13, 30.8%) and time to return to play (2/7, 28.6%) found an association between concussion history and worse outcome. Studies included in the review reported limited information pertaining to the characteristics of prior concussions, such as presence or duration of loss of consciousness or posttraumatic amnesia, age at first lifetime concussion, time since most recent past concussion, or length of recovery from prior concussions. CONCLUSION The question of whether college athletes with a prior history of concussion have worse clinical outcome from their next sport-related concussion remains unresolved. The published results are mixed and in aggregate show modest evidence for an association. Many studies have small samples, and only three studies were designed specifically to address this research question. Important outcomes, such as time to return to academics, have not been adequately studied. Larger hypothesis-driven studies considering the number of prior concussions (e.g., 3 or more) are needed. TRIAL REGISTRATION PROSPERO CRD42016041479, CRD42019128300.
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Affiliation(s)
- Charles E. Gaudet
- grid.38142.3c000000041936754XDepartment of Physical Medicine and Rehabilitation, Harvard Medical School, Boston, MA USA ,grid.32224.350000 0004 0386 9924MassGeneral Hospital for Children Sports Concussion Program, Waltham, MA USA ,grid.416228.b0000 0004 0451 8771Department of Physical Medicine and Rehabilitation, Spaulding Rehabilitation Hospital, Charlestown, MA USA
| | - Grant L. Iverson
- grid.38142.3c000000041936754XDepartment of Physical Medicine and Rehabilitation, Harvard Medical School, Boston, MA USA ,grid.32224.350000 0004 0386 9924MassGeneral Hospital for Children Sports Concussion Program, Waltham, MA USA ,grid.416228.b0000 0004 0451 8771Department of Physical Medicine and Rehabilitation, Spaulding Rehabilitation Hospital, Charlestown, MA USA ,Center for Health and Rehabilitation Research, Charlestown, MA 02129 USA
| | - Alicia Kissinger-Knox
- grid.38142.3c000000041936754XDepartment of Physical Medicine and Rehabilitation, Harvard Medical School, Boston, MA USA ,grid.32224.350000 0004 0386 9924MassGeneral Hospital for Children Sports Concussion Program, Waltham, MA USA ,grid.416228.b0000 0004 0451 8771Department of Physical Medicine and Rehabilitation, Spaulding Rehabilitation Hospital, Charlestown, MA USA
| | - Ryan Van Patten
- grid.413904.b0000 0004 0420 4094Providence Veterans Administration Medical Center, Providence, RI USA ,grid.40263.330000 0004 1936 9094Department of Psychiatry and Human Behavior, Alpert Medical School of Brown University, Providence, RI USA
| | - Nathan E. Cook
- grid.38142.3c000000041936754XDepartment of Physical Medicine and Rehabilitation, Harvard Medical School, Boston, MA USA ,grid.32224.350000 0004 0386 9924MassGeneral Hospital for Children Sports Concussion Program, Waltham, MA USA ,grid.416228.b0000 0004 0451 8771Department of Physical Medicine and Rehabilitation, Spaulding Rehabilitation Hospital, Charlestown, MA USA
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16
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D'Alonzo BA, Bretzin AC, Wiebe DJ. The Role of Reported Affective Symptoms and Anxiety in Recovery Trajectories After Sport-Related Concussion. Am J Sports Med 2022; 50:2258-2270. [PMID: 35647797 PMCID: PMC10898515 DOI: 10.1177/03635465221098112] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
BACKGROUND There is growing awareness and clinical interest in athletes with affective symptoms after sport-related concussion (SRC), as these symptoms may contribute to overall symptoms and represent a modifiable risk factor of longer recovery. However, evidence of their effects on the entire return-to-play (RTP) trajectory, particularly among women and men, is limited. PURPOSE/HYPOTHESIS To examine the relationship between affective symptom reporting and RTP progression after SRC among a cohort of Division 1 student-athletes. We hypothesized that those endorsing affective symptoms, specifically nervous-anxious symptoms, spend more time in RTP progression and recovery. STUDY DESIGN Cohort study; Level of evidence, 3. METHODS Using SRC data from the Ivy League-Big Ten Epidemiology of Concussion Study among varsity athletes through February 2020, we identified the 4 affective symptoms from the Sport Concussion Assessment Tool symptom inventory. We modeled the relationship between a 4-category affective symptom variable and time to symptom resolution, RTP, and RTP progression, adjusting for nonaffective symptom prevalence and concussion history. Cox regressions were used to estimate hazard ratios for time to event outcomes, and linear regressions were used to evaluate mean differences for continuous outcomes. RESULTS Among 2077 student-athletes (men, 63.5%) with SRC symptoms, affective symptom prevalence was 47.6% and 44.3% in women and men, respectively, and nervous-anxious prevalence was 24.2% and 22.5%, respectively. When comparing women with and without co-occurring affective symptoms, rates of symptom resolution and RTP were significantly lower in those with affective symptoms, and women with nervous-anxious symptoms spent significantly longer in RTP progression. When comparing men with and without co-occurring affective symptoms, rates of symptom resolution and RTP were significantly lower in those with co-occurring affective symptoms, and affective symptoms were not associated with time in RTP progression. CONCLUSION Student-athletes with affective symptoms and nervous-anxious symptoms exhibited delayed clinical recovery and RTP timelines, particularly for time in RTP. Symptom prevalence and concussion history contributed to this; however, unmeasured confounding remains, as indicated by the poor model fit. This study motivates future work to explore affective symptoms and RTP timelines, considering anxiety and risk/protective factors over time.
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Affiliation(s)
- Bernadette A D'Alonzo
- Investigation performed at the Department of Biostatistics, Epidemiology and Informatics, University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | - Abigail C Bretzin
- Investigation performed at the Department of Biostatistics, Epidemiology and Informatics, University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | - Douglas J Wiebe
- Investigation performed at the Department of Biostatistics, Epidemiology and Informatics, University of Pennsylvania, Philadelphia, Pennsylvania, USA
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