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Zuleger TM, Slutsky-Ganesh AB, Kim H, Anand M, Warren SM, Grooms DR, Yuan W, Riley MA, Gore RK, Myer GD, Diekfuss JA. Differential neural mechanisms for movement adaptations following neuromuscular training in young female athletes with a history of sports-related concussion. Neuroscience 2024; 558:70-80. [PMID: 39154844 PMCID: PMC11457832 DOI: 10.1016/j.neuroscience.2024.08.014] [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: 03/27/2024] [Revised: 07/22/2024] [Accepted: 08/08/2024] [Indexed: 08/20/2024]
Abstract
Sports-related concussion (SRC) in adolescent athletes is associated with an increased risk of subsequent lower extremity injury. Neuromuscular training (NMT) has shown promise for reducing lower extremity injuries following SRC, however, neural adaptations in response to changes in lower extremity biomechanics following NMT in athletes with a history of SRC (HxSRC) remains poorly understood. Therefore, the purpose of this study was to identify changes in neural activity associated with lower extremity movement adaptations following a six-week NMT intervention in athletes with a HxSRC. Thirty-two right-hand/foot-dominant female adolescent athletes (16 with self-reported HxSRC, 16 age- and anthropometrically-matched controls) completed a bilateral leg press task with 3D motion analysis during functional magnetic resonance imaging (fMRI). Movement adaptations were defined as a change in frontal and sagittal plane range of motion (ROM) during the fMRI bilateral leg press task. Significant pre- to post-NMT reductions were observed in the non-dominant (left) mean frontal plane ROM. Whole-brain neural correlate analysis revealed that increased cerebellar activity was significantly associated with reduced mean left-knee frontal ROM for matched controls. Exploratory within group analyses identified neural correlates in the postcentral gyrus for the HxSRC group which was associated with reduced mean left-knee frontal plane ROM. These distinct longitudinal changes provide preliminary evidence of differential neural activity associated with NMT to support knee frontal plane control in athletes with and without a HxSRC.
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Affiliation(s)
- Taylor M Zuleger
- Emory Sports Performance And Research Center (SPARC), Flowery Branch, GA, USA; Emory Sports Medicine Center, Atlanta, GA, USA; Department of Orthopaedics, Emory University School of Medicine, Atlanta, GA, USA; Neuroscience Graduate Program, University of Cincinnati, Cincinnati, OH, USA.
| | - Alexis B Slutsky-Ganesh
- Emory Sports Performance And Research Center (SPARC), Flowery Branch, GA, USA; Emory Sports Medicine Center, Atlanta, GA, USA; Department of Orthopaedics, Emory University School of Medicine, Atlanta, GA, USA; Department of Kinesiology, University of North Carolina at Greensboro, Greensboro, NC, USA
| | - HoWon Kim
- Ohio Musculoskeletal & Neurological Institute, Ohio University, Athens, OH, USA
| | - Manish Anand
- Emory Sports Performance And Research Center (SPARC), Flowery Branch, GA, USA; Emory Sports Medicine Center, Atlanta, GA, USA; Department of Orthopaedics, Emory University School of Medicine, Atlanta, GA, USA; Department of Mechanical Engineering, Indian Institute of Technology Madras, Chennai, Tamil Nadu, India
| | - Shayla M Warren
- Emory Sports Performance And Research Center (SPARC), Flowery Branch, GA, USA; Emory Sports Medicine Center, Atlanta, GA, USA; Department of Orthopaedics, Emory University School of Medicine, Atlanta, GA, USA
| | - Dustin R Grooms
- Ohio Musculoskeletal & Neurological Institute, Ohio University, Athens, OH, USA; Division of Athletic Training, School of Applied Health Sciences and Wellness, College of Health Sciences and Professions, Ohio University, Athens, OH, USA; Division of Physical Therapy, School of Rehabilitation and Communication Sciences, College of Health Science and Professions, Ohio University, Grover Center, Athens, OH, USA
| | - Weihong Yuan
- Pediatric Neuroimaging Research Consortium, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, USA; College of Medicine, University of Cincinnati, Cincinnati, OH, USA
| | - Michael A Riley
- Department of Rehabilitation, Exercise, & Nutrition Sciences, University of Cincinnati, Cincinnati, OH, USA; Human Performance & Neuromechanics Lab, University of Cincinnati Digital Futures, Cincinnati, OH, USA
| | - Russell K Gore
- Shepherd Center, Atlanta, GA, USA; Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory University, Atlanta, GA, USA
| | - Gregory D Myer
- Emory Sports Performance And Research Center (SPARC), Flowery Branch, GA, USA; Emory Sports Medicine Center, Atlanta, GA, USA; Department of Orthopaedics, Emory University School of Medicine, Atlanta, GA, USA; The Micheli Center for Sports Injury Prevention, Waltham, MA, USA; Youth Physical Development Centre, Cardiff Metropolitan University, Wales, UK
| | - Jed A Diekfuss
- Emory Sports Performance And Research Center (SPARC), Flowery Branch, GA, USA; Emory Sports Medicine Center, Atlanta, GA, USA; Department of Orthopaedics, Emory University School of Medicine, Atlanta, GA, USA
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Magliato SN, Wingerson MJ, Smulligan KL, Little CC, Lugade V, Wilson JC, Howell DR. Virtual Neuromuscular Training Among Physically Active Young Adults: A Feasibility Study. J Sport Rehabil 2024:1-7. [PMID: 39374925 DOI: 10.1123/jsr.2024-0082] [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: 03/06/2024] [Revised: 06/04/2024] [Accepted: 07/30/2024] [Indexed: 10/09/2024]
Abstract
CONTEXT Evidence indicates a 2 to 3 times increased risk of musculoskeletal injury after return to play from concussion. Undetected neuromuscular control deficits at return to play may relate to increased musculoskeletal injury risk. Rehabilitation to improve neuromuscular control may benefit patients with concussion, but access to rehabilitation professionals and/or poor adherence may limit efficacy. Our purpose was to determine the feasibility of an 8-week virtual neuromuscular training (NMT) program administered through a novel smartphone application among physically active, uninjured adults. DESIGN Feasibility trial. METHODS Participants were instructed to complete an NMT program administered via a smartphone application and returned for follow-up questionnaires 8 weeks later. They were instructed to complete 3 asynchronous self-guided workouts per week during the 8-week intervention period. Workouts included balance, plyometrics, strengthening, and dual-task exercises. The application provided instructions for each exercise using video, text, and audio descriptions. Our primary feasibility measure was participant adherence, calculated as the percentage of workouts completed out of the total possible 24 workouts. We recorded the average duration of each workout using start/stop/advance features within the application. RESULTS Twenty participants were enrolled, of which 15 (age = 26.3 [2.7] y, 67% female) returned for follow-up (75% retention). Participant adherence was 57.2% (25.0%; range: 16.7%-91.7%). Participants spent 17.3 (8.0) minutes per workout (range: 7.4-37.9 min). There were no adverse reactions or injuries. Most participants (60%) reported time availability as a primary barrier to intervention completion. CONCLUSIONS Participants were moderately (>50%) adherent to a virtual NMT program, without any reported injuries. We identified several barriers to participation and pathways for improved adherence in the future. The virtual NMT program completed by uninjured adults provides evidence of its feasibility and future scalability to those with a recent concussion to address neuromuscular control deficits and reduce future injury risk.
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Affiliation(s)
- Samantha N Magliato
- Department of Orthopedics, University of Colorado School of Medicine, Aurora, CO, USA
| | - Mathew J Wingerson
- Department of Orthopedics, University of Colorado School of Medicine, Aurora, CO, USA
| | - Katherine L Smulligan
- Department of Orthopedics, University of Colorado School of Medicine, Aurora, CO, USA
| | - Casey C Little
- Sports Medicine Center, Children's Hospital Colorado, Aurora, CO, USA
| | - Vipul Lugade
- Division of Physical Therapy, Binghamton University, Binghamton, NY, USA
| | - Julie C Wilson
- Department of Orthopedics, University of Colorado School of Medicine, Aurora, CO, USA
- Sports Medicine Center, Children's Hospital 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 Colorado, Aurora, CO, USA
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McPherson AL, Larson DR, Shirley MB, Dancy ME, Bates NA, Schilaty ND. Anterior Cruciate Ligament Injury Does Not Increase the Risk for a Future Concussion: A Unidirectional Phenomenon. J Sport Rehabil 2024:1-7. [PMID: 39322214 DOI: 10.1123/jsr.2024-0030] [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: 01/26/2024] [Revised: 05/15/2024] [Accepted: 07/22/2024] [Indexed: 09/27/2024]
Abstract
CONTEXT Epidemiological studies have shown an increased risk of musculoskeletal injury after concussion. The purpose of this study was to determine whether the reverse relationship exists, specifically whether there is an increased risk of concussion after an anterior cruciate ligament (ACL) injury in a population-based cohort. DESIGN Retrospective cohort. METHODS The Rochester Epidemiology Project was searched between 2000 and 2017 for International Classification of Diseases, 9th and 10th Revision codes relevant to the diagnosis and treatment of concussion and ACL tear. A total of 1294 unique patients with acute, isolated ACL tears and no previous history of concussion were identified. Medical records for cases were reviewed to confirm ACL tear diagnosis and to determine history of concussion after the ACL injury. Cases were matched by age, sex, and Rochester Epidemiology Project availability to patients without an ACL tear (1:3 match), resulting in 3882 controls. Medical records of matched control patients were reviewed to rule out history of ACL injury. The hazard ratio of concussion injury following an ACL injury was determined. RESULTS Nine patients with an ACL injury suffered concussion up to 3 years after the ACL injury. The rate of concussion was no different between ACL-injured cases (0.7%) compared with matched controls with no ACL injury (1.2%), which corresponded to a hazard ratio of 0.55 (95% confidence interval, 0.3-1.1; P = .10). CONCLUSIONS Based on the current evidence, there does not appear to be a significant association between ACL injury and subsequent concussion, which suggests that a concussion uniquely affects the risk of future subsequent musculoskeletal injury.
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Affiliation(s)
- April L McPherson
- Department of Orthopaedics, The Ohio State University Wexner Medical Center, Columbus, OH, USA
- Emory Sports Performance and Research Center, Emory University, Flowery Branch, GA, USA
- Emory Sports Medicine Center, Atlanta, GA, USA
- Department of Orthopaedics, Emory University School of Medicine, Atlanta, GA, USA
| | - Dirk R Larson
- Division of Biomedical Statistics and Informatics, Mayo Clinic, Rochester, MN, USA
| | - Matthew B Shirley
- Department of Orthopedic Surgery, Mayo Clinic, Rochester, MN, USA
- Orthopedic Partners of Park City, Park City, UT, USA
| | - Malik E Dancy
- Department of Orthopedic Surgery, Mayo Clinic, Rochester, MN, USA
| | - Nathaniel A Bates
- Department of Orthopaedics, The Ohio State University Wexner Medical Center, Columbus, OH, USA
- Department of Orthopedic Surgery, Mayo Clinic, Rochester, MN, USA
- Sports Medicine Center, Mayo Clinic, Rochester, MN, USA
| | - Nathan D Schilaty
- Department of Orthopedic Surgery, Mayo Clinic, Rochester, MN, USA
- Sports Medicine Center, Mayo Clinic, Rochester, MN, USA
- Department of Neurosurgery & Brain Repair, University of South Florida, Tampa, FL, USA
- Department of Medical Engineering, University of South Florida, Tampa, FL, USA
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McPherson AL, Zuleger TM, Barber Foss KD, Warren SM, Hogg JA, Diekfuss JA, Myer GD. Does Neuromuscular Training Reduce the Risk of Lower-Extremity Musculoskeletal Injury in High School Female Athletes With a History of Sport-Related Concussion? J Sport Rehabil 2024; 33:506-514. [PMID: 39106969 DOI: 10.1123/jsr.2023-0403] [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: 04/04/2024] [Accepted: 05/16/2024] [Indexed: 08/09/2024]
Abstract
CONTEXT There is a well-established increased risk of lower-extremity (LE) musculoskeletal (MSK) injury following a sport-related concussion (SRC). Neuromuscular training programs improve biomechanics associated with LE MSK injury and reduce LE MSK injury incidence, but their relative effectiveness in athletes with history of SRC is unknown. The purpose of this study was to evaluate LE MSK injury incidence in female adolescent athletes with history of SRC following a neuromuscular training intervention. DESIGN Prospective case-control. METHODS Seventy-seven adolescent female athletes aged 12-18 years who participated in soccer, volleyball, or basketball were recruited from a single institutional sports medicine research and performance center to complete a 6-week neuromuscular training program prior to competitive athletic season. Group (Control, History of SRC) comparisons of athlete exposure and relative LE MSK injury risk and rates during the competitive athletic season were assessed. RESULTS Ten injuries were recorded by 9 athletes. Female athletes who reported history of SRC had increased injury risk (Risk Ratio 3.9, 95% CI, 1.1-13.8, P = .01) and increased injury rate (rate ratio 4.1, 95% CI, 1.1-15.8, P = .03) compared with female athletes without history of SRC. CONCLUSIONS Female adolescent athletes with history of SRC showed a greater risk of LE MSK injury compared with athletes with no history of SRC. Future work is still needed to understand the underlying mechanisms associated with future LE MSK injury following SRC and interventions that ameliorate elevated injury risk.
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Affiliation(s)
- April L McPherson
- Emory Sports Performance and Research Center (SPARC), Emory University, Flowery Branch, GA, USA
- Emory Sports Medicine Center, Emory University, Atlanta, GA, USA
- Department of Orthopedics, Emory University School of Medicine, Atlanta, GA, USA
- Department of Orthopaedics, The Ohio State University Wexner Medical Center, Columbus, OH, USA
| | - Taylor M Zuleger
- Emory Sports Performance and Research Center (SPARC), Emory University, Flowery Branch, GA, USA
- Emory Sports Medicine Center, Emory University, Atlanta, GA, USA
- Department of Orthopedics, Emory University School of Medicine, Atlanta, GA, USA
- Neuroscience Graduate Program, University of Cincinnati, Cincinnati, OH, USA
| | - Kim D Barber Foss
- Emory Sports Performance and Research Center (SPARC), Emory University, Flowery Branch, GA, USA
- Emory Sports Medicine Center, Emory University, Atlanta, GA, USA
- Department of Orthopedics, Emory University School of Medicine, Atlanta, GA, USA
| | - Shayla M Warren
- Emory Sports Performance and Research Center (SPARC), Emory University, Flowery Branch, GA, USA
- Emory Sports Medicine Center, Emory University, Atlanta, GA, USA
- Department of Orthopedics, Emory University School of Medicine, Atlanta, GA, USA
| | - Jennifer A Hogg
- Department of Health and Human Performance, The University of Tennessee Chattanooga, Chattanooga, TN, USA
| | - Jed A Diekfuss
- Emory Sports Performance and Research Center (SPARC), Emory University, Flowery Branch, GA, USA
- Emory Sports Medicine Center, Emory University, Atlanta, GA, USA
- Department of Orthopedics, Emory University School of Medicine, Atlanta, GA, USA
| | - Gregory D Myer
- Emory Sports Performance and Research Center (SPARC), Emory University, Flowery Branch, GA, USA
- Emory Sports Medicine Center, Emory University, Atlanta, GA, USA
- Department of Orthopedics, Emory University School of Medicine, Atlanta, GA, USA
- Youth Physical Development Centre, Cardiff Metropolitan University, Wales, United Kingdom
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5
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Zuleger TM, Slutsky-Ganesh AB, Grooms DR, Yuan W, Barber Foss KD, Howell DR, Myer GD, Diekfuss JA. High magnitude exposure to repetitive head impacts alters female adolescent brain activity for lower extremity motor control. Brain Res 2024; 1828:148785. [PMID: 38272157 PMCID: PMC11110884 DOI: 10.1016/j.brainres.2024.148785] [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: 10/27/2023] [Revised: 01/14/2024] [Accepted: 01/19/2024] [Indexed: 01/27/2024]
Abstract
Contact and collision sport participation among adolescent athletes has raised concerns about the potential negative effects of cumulative repetitive head impacts (RHIs) on brain function. Impairments from RHIs and sports-related concussions (SRC) may propagate into lingering neuromuscular control. However, the neural mechanisms that link RHIs to altered motor control processes remain unknown. The purpose of this study was to isolate changes in neural activity for a lower extremity motor control task associated with the frequency and magnitude of RHI exposure. A cohort of fifteen high school female soccer players participated in a prospective longitudinal study and underwent pre- and post-season functional magnetic resonance imaging (fMRI). During fMRI, athletes completed simultaneous bilateral ankle, knee, and hip flexion/extension movements against resistance (bilateral leg press) to characterize neural activity associated with lower extremity motor control. RHI data were binned into continuous categories between 20 g - 120 g (defined by progressively greater intervals), with the number of impacts independently modeled within the fMRI analyses. Results revealed that differential exposure to high magnitude RHIs (≥90 g - < 110 g and ≥ 110 g) was associated with acute changes in neural activity for the bilateral leg press (broadly inclusive of motor, visual, and cognitive regions; all p < 0.05 & z > 3.1). Greater exposure to high magnitude RHIs may impair lower extremity motor control through maladaptive neural mechanisms. Future work is warranted to extend these mechanistic findings and examine the linkages between RHI exposure and neural activity as it relates to subsequent neuromuscular control deficits.
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Affiliation(s)
- Taylor M Zuleger
- Emory Sports Performance And Research Center (SPARC), Flowery Branch, GA, USA; Emory Sports Medicine Center, Atlanta, GA, USA; Department of Orthopaedics, Emory University School of Medicine, Atlanta, GA, USA; University of Cincinnati, Neuroscience Graduate Program, Cincinnati, OH, USA.
| | - Alexis B Slutsky-Ganesh
- Emory Sports Performance And Research Center (SPARC), Flowery Branch, GA, USA; Emory Sports Medicine Center, Atlanta, GA, USA; Department of Orthopaedics, Emory University School of Medicine, Atlanta, GA, USA; Department of Kinesiology, University of North Carolina at Greensboro, Greensboro, NC, USA
| | - Dustin R Grooms
- Ohio Musculoskeletal & Neurological Institute, Ohio University, Athens, OH, USA; Division of Athletic Training, School of Applied Health Sciences and Wellness, College of Health Sciences and Professions, Ohio University, Athens, OH, USA; Division of Physical Therapy, School of Rehabilitation and Communication Sciences, College of Health Science and Professions, Ohio University, Grover Center, Athens, OH, USA
| | - Weihong Yuan
- Pediatric Neuroimaging Research Consortium, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, USA; College of Medicine, University of Cincinnati, Cincinnati, OH, USA
| | - Kim D Barber Foss
- Emory Sports Performance And Research Center (SPARC), Flowery Branch, GA, USA; Emory Sports Medicine Center, Atlanta, GA, USA; Department of Orthopaedics, Emory University School of Medicine, Atlanta, GA, USA
| | - David R Howell
- Sports Medicine Center, Children's Hospital Colorado, Aurora, CO, USA; Department of Orthopaedics, University of Colorado School of Medicine, Aurora, CO, USA
| | - Gregory D Myer
- Emory Sports Performance And Research Center (SPARC), Flowery Branch, GA, USA; Emory Sports Medicine Center, Atlanta, GA, USA; Department of Orthopaedics, Emory University School of Medicine, Atlanta, GA, USA; Youth Physical Development Centre, Cardiff Metropolitan University, Wales, UK; The Micheli Center for Sports Injury Prevention, Waltham, MA, USA
| | - Jed A Diekfuss
- Emory Sports Performance And Research Center (SPARC), Flowery Branch, GA, USA; Emory Sports Medicine Center, Atlanta, GA, USA; Department of Orthopaedics, Emory University School of Medicine, Atlanta, GA, USA.
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Inclan PM, Hicks JJ, Retzky JS, Janosky JJ, Pearle AD. Team Approach: Neuromuscular Training for Primary and Secondary Prevention of Anterior Cruciate Ligament Injury. JBJS Rev 2024; 12:e23.00207. [PMID: 38994007 PMCID: PMC11236273 DOI: 10.2106/jbjs.rvw.23.00207] [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] [Indexed: 07/13/2024]
Abstract
Neuromuscular training is a method of performance optimization-typically combining plyometrics, balancing training, agility, and dynamic stabilization-predicated on improving the efficiency of fundamental movement patterns. Neuromuscular training has consistently been shown to reduce the risk of anterior cruciate ligament injury, particularly for athletes engaged in activities associated with noncontact knee injuries (i.e., women's soccer). Successful implementation of neuromuscular training programs requires input from coaches, physical therapists, athletic trainers, and physicians to generate efficacious programs with high rates of adherence.
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Affiliation(s)
- Paul M Inclan
- Sports Medicine and Shoulder Service, Hospital for Special Surgery, New York, New York
| | - Justin J Hicks
- Sports Medicine and Shoulder Service, Hospital for Special Surgery, New York, New York
| | - Julia S Retzky
- Sports Medicine and Shoulder Service, Hospital for Special Surgery, New York, New York
| | - Joseph J Janosky
- Department of Athlete Health, Hospital for Special Surgery, New York, New York
| | - Andrew D Pearle
- Sports Medicine and Shoulder Service, Hospital for Special Surgery, New York, New York
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Wilkerson GB, Wynn KR, Dill PW, Acocello S, Carlson LM, Hogg J. Concussion history and virtual reality metrics predict core or lower extremity injury occurrence among high school athletes. Front Sports Act Living 2024; 6:1374772. [PMID: 38600904 PMCID: PMC11004318 DOI: 10.3389/fspor.2024.1374772] [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] [Accepted: 03/13/2024] [Indexed: 04/12/2024] Open
Abstract
Introduction A history of concussion is recognized as a risk factor for musculoskeletal injury, which is likely associated with physiological effects that warrant better understanding. This study aimed to assess the potential of measurements obtained from an immersive virtual reality (VR) test to identify a subtle perceptual-motor impairment that may be prospectively associated with the occurrence of a core or lower extremity sprain or strain. Methods A cohort of 68 high school athletes (41 female soccer players and 27 male football players) provided survey responses and completed an immersive VR test several days prior to the initiation of preseason practice sessions. Measurements of eye, neck, arm, and whole-body displacements were obtained during 40 successive lunging/reaching responses to visual stimuli moving horizontally across the VR headset display. Injury occurrences were electronically documented from the initial preseason practice session to the final game of the season. Results A statistically significant and intrinsically credible two-factor prediction model for core or lower extremity injury occurrence included an interaction between female sex and a self-reported history of two or more concussions, along with slow response time (RT) for arm reach (OR = 4.67; 95% CI, 1.51-14.43). Follow-up analyses identified sex-specific cut points for arm reach RT associated with elevated injury risk, which were ≥1.385 s for females and ≥1.257 s for males. Discussion High school female soccer players who have sustained more than one concussion appear to be highly vulnerable to core or lower extremity sprain or strain, with the risk of injury compounded by a slow arm reach RT. Male football players as a group demonstrated significantly faster arm reach RT than that of female soccer players, but slow perceptual-motor RT for arm reach was also identified as a potentially important injury risk factor for male players. Immersive VR appears to provide precise measurements of behavioral performance characteristics that depend on brain processing efficiency. Given that the speed, accuracy, and consistency of perceptual-motor responses may be modifiable, future research should explore the potential benefits of VR training for reducing the risk of sport-related injuries.
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Affiliation(s)
- Gary B. Wilkerson
- Department of Health and Human Performance, University of Tennessee at Chattanooga, Chattanooga, TN, United States
| | - Kimberly R. Wynn
- Department of Intercollegiate Athletics, Mercer University, Macon, GA, United States
| | - Paige W. Dill
- Sports Medicine Outreach Program, Optim Health System, Mount Vernon, GA, United States
| | - Shellie Acocello
- Department of Health and Human Performance, University of Tennessee at Chattanooga, Chattanooga, TN, United States
| | - Lynette M. Carlson
- Department of Health and Human Performance, University of Tennessee at Chattanooga, Chattanooga, TN, United States
| | - Jennifer Hogg
- Department of Health and Human Performance, University of Tennessee at Chattanooga, Chattanooga, TN, United States
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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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9
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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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Beauchamp MH, Dégeilh F, Rose SC. Improving outcome after paediatric concussion: challenges and possibilities. THE LANCET. CHILD & ADOLESCENT HEALTH 2023; 7:728-740. [PMID: 37734775 DOI: 10.1016/s2352-4642(23)00193-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/12/2023] [Revised: 07/12/2023] [Accepted: 07/17/2023] [Indexed: 09/23/2023]
Abstract
The term concussion has permeated mainstream media and household vocabulary mainly due to awareness regarding the risks of concussion in professional contact sports, yet it occurs across a variety of settings and ages. Concussion is prevalent in infants, preschoolers, children, and adolescents, and is a common presentation or reason for referral to primary care providers, emergency departments, and specialised trauma clinics. Its broad range of symptoms and sequelae vary according to multiple individual, environmental, and clinical factors and can lead to health and economic burden. More than 20 years of research into risk factors and consequences of paediatric concussion has revealed as many questions as answers, and scientific work and clinical cases continue to expose its complexity and heterogeneity. In this Review, we present empirical evidence for improving outcome after paediatric concussion. We consider work pertaining to both sports and other injury mechanisms to provide a perspective that should be viewed as complementary to publications focused specifically on sports concussion. Contemporary challenges in prevention, diagnosis, prognosis, and intervention are discussed alongside pathways and future directions for improving outcome.
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Affiliation(s)
- Miriam H Beauchamp
- Sainte-Justine Research Center, University of Montreal, Montréal, QC, Canada; Department of Psychology, University of Montreal, Montréal, QC, Canada.
| | - Fanny Dégeilh
- Univ Rennes, CNRS, Inria, Inserm, IRISA UMR 6074, EMPENN ERL U-1228, Rennes, France
| | - Sean C Rose
- Pediatric Neurology, Nationwide Children's Hospital, Columbus, OH, USA; Ohio State University College of Medicine, Columbus, OH, USA
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Roach MH, Aderman MJ, Ross JD, Kelly TF, Malvasi SR, Posner MA, Svoboda SJ, Pasquina PF, Cameron KL. Risk of Upper Extremity Musculoskeletal Injury Within the First Year After a Concussion. Orthop J Sports Med 2023; 11:23259671231163570. [PMID: 37197033 PMCID: PMC10184236 DOI: 10.1177/23259671231163570] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/06/2022] [Accepted: 01/20/2023] [Indexed: 05/19/2023] Open
Abstract
Background Emerging evidence suggests that athletes and military personnel are at increased risk for lower extremity musculoskeletal injury after a concussion; however, the association between concussion and subsequent upper extremity (UE) musculoskeletal injury is unknown. Purpose To prospectively examine the association between concussion and UE musculoskeletal injury risk within the first year after returning to unrestricted activity. Study Design Cohort study; Level of evidence, 3. Methods A total of 316 cases of concussion 42% (132/316 women) were observed among 5660 Concussion Assessment, Research and Education Consortium participants at the United States Military Academy from May 2015 to June 2018. Active injury surveillance within the cohort was conducted for 12 months after unrestricted return to activity to identify any incident cases of acute UE musculoskeletal injury. Injury surveillance during the follow-up period was also conducted for nonconcussed controls who were matched by sex and competitive sport level. Univariate and multivariable Cox proportional hazards regression models were used to estimate hazard ratios between concussed cases and nonconcussed controls for time to UE musculoskeletal injury. Results During the surveillance period, 19.3% of concussed cases and 9.2% of nonconcussed controls sustained a UE injury. In the univariate model, concussed cases were 2.25 times (95% CI, 1.45-3.51) more likely to sustain a UE injury during the 12-month follow-up period when compared with the nonconcussed controls. In the multivariable model, adjusted for history of concussion, sport level, somatization, and history of UE injury, concussed cases were 1.84 times (95% CI, 1.10-3.07) more likely to sustain a UE injury during the surveillance period compared with nonconcussed controls. Sport level remained an independent risk factor for UE musculoskeletal injury; however, concussion history, somatization, and history of UE injury were not independent risk factors. Conclusion Concussed cases were more than twice as likely to sustain an acute UE musculoskeletal injury within the first 12 months after unrestricted return to activity when compared with nonconcussed controls. The higher hazard of injury remained in the concussed group after adjusting for other potential risk factors.
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Affiliation(s)
- Megan H. Roach
- Extremity Trauma & Amputation Center of Excellence, Defense Health Agency, Falls Church, Virginia, USA
- Department of Clinical Investigations, Womack Army Medical Center, Fort Bragg, North Carolina, USA
- Department of Surgery, Uniformed Services University of the Health Sciences, Bethesda, Maryland, USA
- Megan H. Roach, PhD, ATC, Womack Army Medical Center, 2817 Reilly Road, Fort Bragg, NC 28310, USA () (Twitter: @houston_mn)
| | - Michael J. Aderman
- John A. Feagin Jr. Sports Medicine Fellowship, Keller Army Hospital, West Point, New York, USA
| | - Jeremy D. Ross
- United States Military Academy, West Point, New York, USA
| | - Tim F. Kelly
- United States Military Academy, West Point, New York, USA
| | - Steven R. Malvasi
- John A. Feagin Jr. Sports Medicine Fellowship, Keller Army Hospital, West Point, New York, USA
| | - Matthew A. Posner
- John A. Feagin Jr. Sports Medicine Fellowship, Keller Army Hospital, West Point, New York, USA
| | - Steven J. Svoboda
- Medstar Orthopaedic Institute, Washington, District of Columbia, USA
| | - Paul F. Pasquina
- Walter Reed National Military Medical Center, Washington, District of Columbia, USA
- Department of Physical Medicine and Rehabilitation, Uniformed Services University, Bethesda, Maryland, USA
| | - Kenneth L. Cameron
- John A. Feagin Jr. Sports Medicine Fellowship, Keller Army Hospital, West Point, New York, USA
- Department of Physical Medicine and Rehabilitation, Uniformed Services University, Bethesda, Maryland, USA
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12
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Bennett H, Chalmers S, Fuller J. The impact of concussion on subsequent injury risk in elite junior Australian football athletes. J Sci Med Sport 2023:S1440-2440(23)00069-5. [PMID: 37061396 DOI: 10.1016/j.jsams.2023.03.013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2022] [Revised: 02/20/2023] [Accepted: 03/27/2023] [Indexed: 04/05/2023]
Abstract
OBJECTIVES Concussion increases injury risk. However, this has not been investigated in junior Australian football and it is unknown whether the location, severity, and mechanism of subsequent injuries differ after concussion vs. non-concussion injury. DESIGN Prospective cohort. METHODS 1455 elite adolescent male Australian footballers were tracked across seven seasons to determine whether subsequent injury risk was greater after concussion compared to non-concussion index injury using multilevel survival analysis. Mixed-effects logistic regression compared location and mechanism. Mixed-effects Poisson regression compared severity. RESULTS Of 1455 athletes, 632 were injured and included in subsequent-injury analysis. There were no differences in injury incidence after a concussion compared to upper- (hazard ratio = 1.0, 0.6 to 1.9, P = 0.892; trivial effect) and lower (hazard ratio = 1.1, 0.6 to 1.9, P = 0.810; trivial effect) index injury, or in location. Subsequent injuries were more likely to be contact-based after a non-concussion injury than concussion (odds ratio = 4.6, 1.3 to 16.0; P = 0.017; large effect). There was no difference in subsequent injury severity after lower- (3.4 ± 3.0 missed matches; incidence rate ratio = 1.4, 0.9 to 2.1; P ≤ 0.117; small effect) and upper-limb injuries (3.4 ± 3.1 missed matches; incidence rate ratio = 1.4, 0.9 to 2.2; P = 0.189; small effect) compared to concussion (2.4 ± 2.0 missed matches). CONCLUSIONS Subsequent injury risk, severity, and location in junior Australian football are similar following concussion compared to non-concussion index injuries, although contact injuries are less likely.
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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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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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Buckley TA, Browne S, Hunzinger KJ, Kaminski TW, Swanik CB. Concussion is not associated with elevated rates of lower-extremity musculoskeletal injuries in National Football League Players. PHYSICIAN SPORTSMED 2022:1-6. [PMID: 35591786 DOI: 10.1080/00913847.2022.2080515] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
OBJECTIVE Emerging evidence has identified an ~2x elevated risk of musculoskeletal (MSK) injury in the year following a concussion. Most of these studies have examined a single college/university athletic department and may lack generalizability to professional sports. Therefore, the purpose of this study was to assess the odds of post-concussion MSK injury utilizing publicly available National Football League (NFL) injury reports. METHODS Concussions were identified through a review of published NFL injury reports during the 2015, 2016, and 2017 regular seasons. Concussed players were matched by team and position, and injuries were tracked for both groups for the remainder of the season. A chi-square analysis compared the frequency of MSK injury in both groups and a Cox Proportional Hazard model calculated the risk of sustaining a subsequent MSK injury. RESULTS There were 322 concussed NFL players who met inclusion criteria and were successfully matched. From the time of concussion through the remainder of the season, 21.4% of the concussed players were injured and 26.4% of control participants were injured. There was no difference in MSK injury rates (p = 0.166), and the relative risk ratio was 0.90 for subsequent injury in the concussion group. There was no difference in the time to event for subsequent MSK between the two groups (p = 0.123). CONCLUSION The primary finding of this study was no elevated risk of post-concussion MSK in NFL football players.
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Affiliation(s)
- Thomas A Buckley
- Department of Kinesiology and Applied Physiology, University of Delaware, Newark, DE, USA.,Interdisciplinary Program in Biomechanics and Movement Science, University of Delaware, Newark, DE, USA
| | - Steven Browne
- Department of Intercollegiate Athletics, University of Delaware, Newark, DE, USA
| | - Katherine J Hunzinger
- Department of Epidemiology, Biostatistics, and Informatics, University of Pennsylvania Perelman School of Medicine, Philadelphia, PA, USA
| | - Thomas W Kaminski
- Department of Kinesiology and Applied Physiology, University of Delaware, Newark, DE, USA.,Interdisciplinary Program in Biomechanics and Movement Science, University of Delaware, Newark, DE, USA
| | - Charles Buz Swanik
- Department of Kinesiology and Applied Physiology, University of Delaware, Newark, DE, USA.,Interdisciplinary Program in Biomechanics and Movement Science, University of Delaware, Newark, DE, USA
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