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Leggett B, Eliason P, Sick S, Burma JS, Wong SK, Laperrière D, Goulet C, Fremont P, Russell K, Schneider KJ, Emery CA. Youth Preseason Performance on the Sport Concussion Assessment Tool 5 Across Multiple Sports. Clin J Sport Med 2024; 34:288-296. [PMID: 38149828 DOI: 10.1097/jsm.0000000000001201] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/09/2023] [Accepted: 11/07/2023] [Indexed: 12/28/2023]
Abstract
OBJECTIVE To examine preseason Sport Concussion Assessment Tool 5 (SCAT5) performance of adolescent sport participants by environment (in-person/virtual), sex, age, concussion history, collision/noncollision sport participation, and self-reported medical diagnoses. DESIGN Cross-sectional. SETTING Canadian community and high-school sport settings. PARTICIPANTS Three thousand eight hundred five adolescent (2493 male, 1275 female, and 37 did not disclose; 11- to 19-year-old) sport participants. ASSESSMENT OF RISK FACTORS Sport Concussion Assessment Tool 5 administration method (in-person/virtual), sex (male/female/unreported), age (years), concussion history (0/1/2/3+), collision/noncollision sport participant, and self-reported medical diagnoses [attention deficit disorder or attention-deficit/hyperactivity disorder, headache/migraine, learning disability, and psychiatric disorder (ie, anxiety/depression/other)]. OUTCOME MEASURES Preseason SCAT5 outcomes including total number of symptoms (TNS; /22), symptom severity score (SSS; /132), Standardized Assessment of Concussion (SAC; /50), and modified Balance Error Scoring System (mBESS; /30). RESULTS Multiple multilevel linear or Poisson regression complete case analyses adjusting for clustering and robust standard errors, with β-coefficients (95% CI) back-transformed to indicate an increase/decrease in SCAT5 subdomains when relevant for clinical interpretation. Virtual (V) performance was associated with fewer symptoms reported [TNS Difference V-IP = -1.53 (95% CI, -2.22 to -0.85)], lower SSS [-2.49 (95% CI, -4.41 to -0.58)], and fewer mBESS errors (IP) [-0.52 (95% CI, -0.77 to -0.27)] compared with in-person. For every one-year increase in age, more symptoms [TNS = 0.22 (95% CI, 0.01-0.44)], higher SSS [0.52 (95% CI, 0.01-1.06)], higher SAC [0.27 (95% CI, 0.15-0.38), and poorer balance [mBESS = -0.19 (-0.28 to -0.09)] were observed. Differences between males and females were also seen across all SCAT5 outcomes. Individuals reporting any medical diagnosis or 3+ concussion history also reported more symptoms (TNS) and higher SSS than those who did not. CONCLUSIONS Administration environment, sex, age, concussion history, and medical diagnoses were associated with SCAT5 subdomains and are important considerations when interpreting the SCAT5 results.
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Affiliation(s)
- Benjamin Leggett
- Sport Injury Prevention Research Centre, Faculty of Kinesiology, University of Calgary, Calgary, AB, Canada
- Cerebrovascular Concussion Laboratory, Faculty of Kinesiology, University of Calgary, Calgary, AB, Canada
- O'Brien Institute for Public Health, University of Calgary, Calgary, AB, Canada
- Alberta Children's Hospital Research Institute, University of Calgary, Calgary, AB, Canada
- Hotchkiss Brain Institute, University of Calgary, Calgary, AB, Canada
- McCaig Institute for Bone and Joint Health, University of Calgary, Calgary, AB, Canada
| | - Paul Eliason
- Sport Injury Prevention Research Centre, Faculty of Kinesiology, University of Calgary, Calgary, AB, Canada
- O'Brien Institute for Public Health, University of Calgary, Calgary, AB, Canada
- Alberta Children's Hospital Research Institute, University of Calgary, Calgary, AB, Canada
- Hotchkiss Brain Institute, University of Calgary, Calgary, AB, Canada
| | - Stacy Sick
- Sport Injury Prevention Research Centre, Faculty of Kinesiology, University of Calgary, Calgary, AB, Canada
- O'Brien Institute for Public Health, University of Calgary, Calgary, AB, Canada
- Alberta Children's Hospital Research Institute, University of Calgary, Calgary, AB, Canada
- Hotchkiss Brain Institute, University of Calgary, Calgary, AB, Canada
- Libin Cardiovascular Institute of Alberta, University of Calgary, Calgary, AB, Canada
| | - Joel S Burma
- Sport Injury Prevention Research Centre, Faculty of Kinesiology, University of Calgary, Calgary, AB, Canada
- Cerebrovascular Concussion Laboratory, Faculty of Kinesiology, University of Calgary, Calgary, AB, Canada
- O'Brien Institute for Public Health, University of Calgary, Calgary, AB, Canada
- Alberta Children's Hospital Research Institute, University of Calgary, Calgary, AB, Canada
- Hotchkiss Brain Institute, University of Calgary, Calgary, AB, Canada
- McCaig Institute for Bone and Joint Health, University of Calgary, Calgary, AB, Canada
- Human Performance Laboratory, Faculty of Kinesiology, University of Calgary, Calgary, AB, Canada
| | - Sophie K Wong
- Sport Injury Prevention Research Centre, Faculty of Kinesiology, University of Calgary, Calgary, AB, Canada
- Human Performance Laboratory, Faculty of Kinesiology, University of Calgary, Calgary, AB, Canada
| | - David Laperrière
- Pavillon de l'Éducation physique et des sports, Université Laval, Québec City, QC, Canada
- Pediatrics and Child Health, University of Manitoba, Winnipeg, MN, Canada
- Department of Physical Education, Faculty of Education, Université Laval, Québec City, QC, Canada
| | - Claude Goulet
- Department of Physical Education, Faculty of Education, Université Laval, Québec City, QC, Canada
| | - Pierre Fremont
- Pavillon de l'Éducation physique et des sports, Université Laval, Québec City, QC, Canada
| | - Kelly Russell
- Pediatrics and Child Health, University of Manitoba, Winnipeg, MN, Canada
- Children's Hospital Research Institute of Manitoba, Winnipeg, MB, Canada
| | - Kathryn J Schneider
- Sport Injury Prevention Research Centre, Faculty of Kinesiology, University of Calgary, Calgary, AB, Canada
- Alberta Children's Hospital Research Institute, University of Calgary, Calgary, AB, Canada
- Hotchkiss Brain Institute, University of Calgary, Calgary, AB, Canada
- Sport Medicine Centre, Faculty of Kinesiology, University of Calgary, Calgary, AB, Canada
- Evidence Sport and Spine, Calgary, AB, Canada
| | - Carolyn A Emery
- Sport Injury Prevention Research Centre, Faculty of Kinesiology, University of Calgary, Calgary, AB, Canada
- O'Brien Institute for Public Health, University of Calgary, Calgary, AB, Canada
- Alberta Children's Hospital Research Institute, University of Calgary, Calgary, AB, Canada
- Hotchkiss Brain Institute, University of Calgary, Calgary, AB, Canada
- McCaig Institute for Bone and Joint Health, University of Calgary, Calgary, AB, Canada
- Community Health Sciences, Cumming School of Medicine, University of Calgary, Calgary, AB, Canada; and
- Department of Pediatrics, Cumming School of Medicine, University of Calgary, Calgary, AB, Canada
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Twohey EE, Hasley IB, Shaeffer PJ, Ceremuga GA, Firkins SA, Stringer GC, Vaz Carneiro Filho MR, Hollman JH, Savica R, Finnoff JT. Mixed Martial Arts: Comparing the King-Devick and Sport Concussion Assessment Tool 5 in knockouts, technical knockouts and choke holds. Arch Rehabil Res Clin Transl 2023; 5:100301. [PMID: 38163040 PMCID: PMC10757192 DOI: 10.1016/j.arrct.2023.100301] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2024] Open
Abstract
Objective To compare validity indices of the King-Devick (KD) test and Sport Concussion Assessment Tool 5 (SCAT5) for traumatic events in MMA, and to determine if perfusion events (alterations in consciousness as the result of choke holds) cause similar changes in KD/SCAT5 scores. Design A prospective cohort study in MMA fighters who completed KD and SCAT5 assessments before and after a match. Outcomes were categorized as non-event, traumatic event, or perfusion event. KD/SCAT5 changes were compared between all athletes. Participants One hundred forty MMA athletes (7 women, 133 men), mean age=27.1 ± 4.9 years. Intervention N/A. Main outcome measures King-Devick (KD) test and Sport Concussion Assessment Tool 5 (SCAT5). Results Among the 140 athletes, 19 sustained traumatic and 15 perfusion events. Testing provided sensitivities/specificities of 21.05%/93.39% (KD) and 77.78%/52.99% (SCAT5) in detecting a traumatic event. KD and SCAT5 Symptom Severity scores differed between athletes with and without traumatic events (P=.041 and .014). KD and SCAT5 Symptoms Score changes were observed between athletes with and without traumatic events (P=.023 and .042). Neither KD nor SCAT5 differed significantly between athletes with and without perfusion events. Conclusions The KD test provides high specificity and the SCAT5 demonstrates reasonable sensitivity when detecting a traumatic event. Of the SCAT5, symptoms-related scores may most effectively identify a traumatic event. A traumatic event may cause KD/SCAT5 changes similar to a concussion, while perfusion events did not.
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Affiliation(s)
- Eric E. Twohey
- Department of Physical Medicine and Rehabilitation, Mayo Clinic, Rochester, MN
| | | | - Patrick J. Shaeffer
- Department of Physical Medicine and Rehabilitation, UnityPoint Health, Des Moines, IA
| | - George A. Ceremuga
- Department of Physical Medicine and Rehabilitation, Avera Health, Sioux Falls, SD
| | - Stephen A. Firkins
- Department of Internal Medicine, The Ohio State University, Columbus, OH
| | | | | | - John H. Hollman
- Department of Physical Medicine and Rehabilitation, Mayo Clinic, Rochester, MN
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Cameron B, Burma JS, Jasinovic T, Lun V, van Rassel CR, Sutter B, Wiley JP, Schneider KJ. One-year stability of preseason Sport Concussion Assessment Tool 5 (SCAT5) values in university level collision and combative sport athletes. PHYSICIAN SPORTSMED 2022; 50:478-485. [PMID: 34283687 DOI: 10.1080/00913847.2021.1955225] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
OBJECTIVES To determine the stability of the Sport Concussion Assessment Tool (SCAT) 5 between consecutive seasons in uninjured collision and combative varsity athletes. METHODS Thirty-six athletes (19 females) were recruited to participate (wrestling [n = 12], rugby [n = 14], and hockey [n = 10]). The SCAT5 was administration at the start of the 2017 and 2018 seasons. Median baseline demographics for 2017 were as follows: age (19 years [range: 17-24 years]), height (174 cm [range: 149-195 cm]), and weight (76 kg [range: 57-118 kg]). Outcome metrics included subcomponents of the SCAT5: symptom reporting, standardized assessment of concussion (SAC), neurological screening, and balance performance measured with the modified balance error scoring system (mBESS). Wilcoxon signed-rank tests and Cronbach's alpha (α) values were calculated to determine the stability between consecutive years for the SCAT5 variables in the same cohort of athletes. Bonferroni corrections were applied for Wilcoxon signed-rank tests, where alpha = 0.006 (0.05/9). RESULTS Between the 2017 and 2018 seasons, no differences were noted in symptom reporting (p = 0.14), SAC (p = 0.32), neurological screening (p = 0.98), and balance performance on the mBESS (p = 0.01). The Cronbach's alpha displayed unacceptable to questionable levels of within-subject stability (range: α = 0.34-0.70) for all subcomponents, except months in reverse order (α = 0.92). CONCLUSIONS While no statistical differences were present for all SCAT5 subcomponent metrics between 2017 and 2018 baselines, all but one displayed unacceptable to questionable stability (α ≤ 0.70) when retested one year later. Further research is needed to understand the appropriate time duration baseline SCAT5 values can reliably be utilized within longitudinal studies; as well as the normal variation of SCAT5 reporting/scoring.
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Affiliation(s)
- Ben Cameron
- Department of Family Medicine, Cumming School of Medicine, University of Calgary, Calgary, AB, Canada.,Faculty of Kinesiology, University of Calgary Sport Medicine Center, Calgary, AB, Canada
| | - Joel S Burma
- Sport Injury Prevention Research Centre, Faculty of Kinesiology, University of Calgary, Calgary, AB, Canada.,Hotchkiss Brain Institute, Cumming School of Medicine, University of Calgary, Calgary, AB, Canada
| | - Tin Jasinovic
- Department of Family Medicine, Cumming School of Medicine, University of Calgary, Calgary, AB, Canada
| | - Victor Lun
- Department of Family Medicine, Cumming School of Medicine, University of Calgary, Calgary, AB, Canada.,Faculty of Kinesiology, University of Calgary Sport Medicine Center, Calgary, AB, Canada
| | - Cody R van Rassel
- Sport Injury Prevention Research Centre, Faculty of Kinesiology, University of Calgary, Calgary, AB, Canada
| | - Bonnie Sutter
- Faculty of Kinesiology, University of Calgary Sport Medicine Center, Calgary, AB, Canada
| | - J Preston Wiley
- Department of Family Medicine, Cumming School of Medicine, University of Calgary, Calgary, AB, Canada.,Faculty of Kinesiology, University of Calgary Sport Medicine Center, Calgary, AB, Canada.,Sport Injury Prevention Research Centre, Faculty of Kinesiology, University of Calgary, Calgary, AB, Canada
| | - Kathryn J Schneider
- Faculty of Kinesiology, University of Calgary Sport Medicine Center, Calgary, AB, Canada.,Sport Injury Prevention Research Centre, Faculty of Kinesiology, University of Calgary, Calgary, AB, Canada.,Hotchkiss Brain Institute, Cumming School of Medicine, University of Calgary, Calgary, AB, Canada.,Cumming School of Medicine, Alberta Children's Hospital Research Institute, Calgary, AB, Canada
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Vedung F, Fahlström M, Wall A, Antoni G, Lubberink M, Johansson J, Tegner Y, Stenson S, Haller S, Weis J, Larsson EM, Marklund N. Chronic cerebral blood flow alterations in traumatic brain injury and sports-related concussions. Brain Inj 2022; 36:948-960. [PMID: 35950271 DOI: 10.1080/02699052.2022.2109746] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
Abstract
PRIMARY OBJECTIVE Traumatic brain injury (TBI) and sports-related concussion (SRC) may result in chronic functional and neuroanatomical changes. We tested the hypothesis that neuroimaging findings (cerebral blood flow (CBF), cortical thickness, and 1H-magnetic resonance (MR) spectroscopy (MRS)) were associated to cognitive function, TBI severity, and sex. RESEARCH DESIGN Eleven controls, 12 athletes symptomatic following ≥3SRCs and 6 patients with moderate-severe TBI underwent MR scanning for evaluation of cortical thickness, brain metabolites (MRS), and CBF using pseudo-continuous arterial spin labeling (ASL). Cognitive screening was performed using the RBANS cognitive test battery. MAIN OUTCOMES AND RESULTS RBANS-index was impaired in both injury groups and correlated with the injury severity, although not with any neuroimaging parameter. Cortical thickness correlated with injury severity (p = 0.02), while neuronal density, using the MRS marker ((NAA+NAAG)/Cr, did not. On multivariate analysis, injury severity (p = 0.0003) and sex (p = 0.002) were associated with CBF. Patients with TBI had decreased gray (p = 0.02) and white matter (p = 0.02) CBF compared to controls. CBF was significantly lower in total gray, white matter and in 16 of the 20 gray matter brain regions in female but not male athletes when compared to female and male controls, respectively. CONCLUSIONS Injury severity correlated with CBF, cognitive function, and cortical thickness. CBF also correlated with sex and was reduced in female, not male, athletes. Chronic CBF changes may contribute to the persistent injury mechanisms in TBI and rSRC.
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Affiliation(s)
- Fredrik Vedung
- Department of Neuroscience, Neurosurgery, Uppsala University, Uppsala, Sweden
| | | | - Anders Wall
- PET Centre, Uppsala University Hospital, Uppsala, Sweden.,Department of Surgical Sciences, Nuclear Medicine and PET, Uppsala University, Uppsala, Sweden
| | - Gunnar Antoni
- Department of Medicinal Chemistry, Uppsala University, Uppsala, Sweden
| | - Mark Lubberink
- Medical Physics, Uppsala University Hospital, Uppsala, Sweden.,PET Centre, Uppsala University Hospital, Uppsala, Sweden
| | - Jakob Johansson
- Department of Surgical Sciences, Anesthesiology, Uppsala University, Uppsala, Sweden
| | - Yelverton Tegner
- Department of Health Sciences, Luleå University of Technology, Uppsala, Sweden
| | - Staffan Stenson
- Department of Neuroscience, Rehabilitation Medicine, Uppsala, Sweden
| | - Sven Haller
- Department of Surgical Sciences, Radiology, Uppsala University, Uppsala, Sweden.,Affidea CDRC Centre de Diagnostic Radiologique de Carouge SA, Geneva, Switzerland
| | - Jan Weis
- Medical Physics, Uppsala University Hospital, Uppsala, Sweden
| | - Elna-Marie Larsson
- Department of Surgical Sciences, Radiology, Uppsala University, Uppsala, Sweden
| | - Niklas Marklund
- Department of Neuroscience, Neurosurgery, Uppsala University, Uppsala, Sweden.,Department of Clinical Sciences Lund, Neurosurgery, Lund University, Skåne University Hospital, Lund, Sweden
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5
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Salmon DM, Chua J, Sullivan SJ, Whatman C, Brown J, Register-Mihalik J, Murphy I, Walters S, Clacy A, Sole G, Kerr ZY, Rasmussen K, England M. Sport concussion assessment in New Zealand high school rugby players: a collaborative approach to the challenges faced in primary care. Brain Inj 2022; 36:258-270. [PMID: 35143350 DOI: 10.1080/02699052.2022.2033839] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
Abstract
PRIMARY OBJECTIVE To describe the collaborative development of a New Zealand Rugby Concussion Assessment (NZRCA) for primary care and to provide normative baseline data from a representative group of high school rugby players. METHODS This study, conducted over the 2018 and 2019 community rugby season where players were baseline tested during the pre- or start of season period. RESULTS Data were collected from 1428 players (males n = 1121, females n = 307) with a mean age of 15.9 ± 1.4 years. The mean ± SD symptom severity score was 11.3 ± 8.6, the mean number of endorsed symptoms was 8.5 ± 5.3 and the percentage feeling "normal" was 80.2 ± 15.3%. Only 5.3% of players reported no symptoms at baseline. The most common reported were: 'distracted easily' (72.5%), 'forgetful' (68.5%), and 'often tired' (62.6%). None of the participants achieved a perfect score for the SAC50. The majority of participants (89.7%) passed the tandem gait test with a time of 12.2 ± 1.7 seconds. Age, gender, and ethnicity were associated with NZRCA performance; albeit weakly. CONCLUSION This study provides normative reference values for high-school rugby players. These data will aid healthcare providers in their identification of suspected concussion in the absence of individualized baselines.
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Affiliation(s)
| | - Jason Chua
- New Zealand Rugby, Wellington, New Zealand
| | | | - Chris Whatman
- Sports Performance Research Institute New Zealand, School of Sport and Recreation, Auckland University of Technology, Auckland, New Zealand
| | - James Brown
- The Institute of Sport and Exercise Medicine, Stellenbosch University, Cape Town, South Africa
| | - Johna Register-Mihalik
- Matthew Gfeller Sport-Related Traumatic Brain Injury Research Center, Department of Exercise and Sport Science, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA.,Injury Prevention Research Center, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA.,Department of Exercise and Sport Science, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA
| | - Ian Murphy
- New Zealand Rugby, Wellington, New Zealand
| | - Simon Walters
- Sports Performance Research Institute New Zealand, School of Sport and Recreation, Auckland University of Technology, Auckland, New Zealand
| | - Amanda Clacy
- School of Law & Society, University of the Sunshine Coast, Maroochydore, Australia
| | - Gisela Sole
- Centre of Health, Activity, Rehabilitation Research, School of Physiotherapy, University of Otago, Dunedin, New Zealand
| | - Zachary Y Kerr
- Matthew Gfeller Sport-Related Traumatic Brain Injury Research Center, Department of Exercise and Sport Science, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA.,Injury Prevention Research Center, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA.,Department of Exercise and Sport Science, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA
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6
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Kelshaw PM, Cook NE, Terry DP, Cortes N, Iverson GL, Caswell SV. Interpreting change on the Child Sport Concussion Assessment Tool, 5th edition. J Sci Med Sport 2022; 25:492-498. [DOI: 10.1016/j.jsams.2022.02.003] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2021] [Revised: 01/18/2022] [Accepted: 02/13/2022] [Indexed: 10/19/2022]
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Graham RF, van Rassel CR, Burma JS, Rutschmann TD, Miutz LN, Sutter B, Schneider K. Concurrent Validity of a Stationary Cycling Test and the Buffalo Concussion Treadmill Test in Adults With Concussion. J Athl Train 2021; 56:1292-1299. [PMID: 34911073 PMCID: PMC8675311 DOI: 10.4085/1062-6050-0003.21] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
CONTEXT After concussion, a multifaceted assessment is recommended, including tests of physical exertion. The current criterion standard for exercise testing after concussion is the Buffalo Concussion Treadmill Test (BCTT); however, validated tests that use alternative exercise modalities are lacking. OBJECTIVE To evaluate the feasibility and concurrent validity of a universal cycling test of exertion compared with the BCTT in adults who sustained a sport-related concussion. DESIGN Crossover study. SETTING University sports medicine clinic. PATIENTS OR OTHER PARTICIPANTS Twenty adults (age = 18-60 years) diagnosed with a sport-related concussion. INTERVENTION(S) Participants completed the BCTT and a cycling test of exertion in random order, approximately 48 hours apart. MAIN OUTCOME MEASURE(S) The primary outcome of interest was maximum heart rate (HRmax; beats per minute [bpm]). Secondary outcomes of interest were the total number of symptoms endorsed on the Post-Concussion Symptom Scale, whether the participant reached volitional fatigue (yes or no), the symptom responsible for test cessation (Post-Concussion Symptom Scale), maximum rating of perceived exertion, symptom severity on a visual scale (0-10), and the time to test cessation. RESULTS Of the 20 participants, 19 (10 males, 9 females) completed both tests. One participant did not return for the second test and was excluded from the analysis. No adverse events were reported. The median HRmax for the BCTT (171 bpm; interquartile range = 139-184 bpm) was not different from the median HRmax for the cycle (173 bpm; interquartile range = 160-182 bpm; z = -0.63; P = .53). For both tests, the 3 most frequently reported symptoms responsible for test cessation were headache, dizziness, and pressure in the head. Of interest, most participants (64%) reported a different symptom responsible for cessation of each test. CONCLUSIONS On the novel cycling test of exertion, participants achieved similar HRmax and test durations and, therefore, this test may be a suitable alternative to the BCTT. Future research to understand the physiological reason for the heterogeneity in symptoms responsible for test cessation is warranted.
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Affiliation(s)
- Robert F. Graham
- Sport Injury Prevention Research Centre, Faculty of Kinesiology, University of Calgary, AB, Canada
| | - Cody R. van Rassel
- Sport Injury Prevention Research Centre, Faculty of Kinesiology, University of Calgary, AB, Canada
| | - Joel S. Burma
- Sport Injury Prevention Research Centre, Faculty of Kinesiology, University of Calgary, AB, Canada
- Hotchkiss Brain Institute, University of Calgary, AB, Canada
| | - Trevor D. Rutschmann
- Sport Injury Prevention Research Centre, Faculty of Kinesiology, University of Calgary, AB, Canada
- Faculty of Rehabilitation Medicine, University of Alberta, Edmonton, Canada
| | - Lauren N. Miutz
- Sport Injury Prevention Research Centre, Faculty of Kinesiology, University of Calgary, AB, Canada
| | - Bonnie Sutter
- University of Calgary Sport Medicine Centre, AB, Canada
| | - Kathryn Schneider
- Sport Injury Prevention Research Centre, Faculty of Kinesiology, University of Calgary, AB, Canada
- Hotchkiss Brain Institute, University of Calgary, AB, Canada
- University of Calgary Sport Medicine Centre, AB, Canada
- Alberta Children's Hospital Research Institute, University of Calgary, Canada
- Evidence Sport and Spinal Therapy, Calgary, AB, Canada
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Salmon DM, Chua J, Sullivan SJ, Whatman C, Brown J, Register-Mihalik J, Murphy I, Walters S, Clacy A, Sole G, Kerr ZY, Rasmussen K, England M. Baseline concussion assessment performance of community-based senior rugby players: a cross-sectional study. Brain Inj 2021; 35:1433-1442. [PMID: 34658272 DOI: 10.1080/02699052.2021.1972452] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
OBJECTIVE To report pre-season baseline concussion assessment performance among senior rugby players and explore associations between assessment performance and player demographics. DESIGN A cross-sectional study using the New Zealand Rugby Concussion Assessments (NZRCA), comprising symptom, cognitive and dynamic coordination assessments was conducted in the 2018-2019 season. METHODS Players' baseline assessments were characterised using descriptive statistics; effect sizes (ES) and t-tests were used to explore associations between player demographic characteristics and NZRCA performance. RESULTS A total of 733 players (11.4% female) aged between 16 and 52 years completed the NZRCA. The median (range) value for symptom severity, endorsed symptoms and "percentage normal" was respectively, 5 (0-40), 5 (0-21) and 90% (30-100%). A perfect standardised assessment of concussion score was achieved by one participant; seven achieved ≥27/30 for immediate recall, and 22 achieved a perfect delayed recall score. Most participants (n = 674, 92%) passed the tandem gait test. Associations between NZRCA performance and gender, concussion history, and Pasifika ethnicity were observed with effect sizes ranging from small (0.18) to large (0.70). Six hundred and twenty-three (85%) participants reported at least one symptom. CONCLUSIONS The results from this study could help support decision-making by clinicians, improving the management of concussions in the community setting.
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Affiliation(s)
- Danielle M Salmon
- Injury Prevention and Welfare, New Zealand Rugby, Wellington, New Zealand
| | - Jason Chua
- Injury Prevention and Welfare, New Zealand Rugby, Wellington, New Zealand
| | - S John Sullivan
- Injury Prevention and Welfare, New Zealand Rugby, Wellington, New Zealand
| | - Chris Whatman
- School of Sport and Recreation, Sports Performance Research Institute New Zealand, Auckland University of Technology, Auckland, New Zealand
| | - James Brown
- The Institute of Sport and Exercise Medicine, Stellenbosch University, Cape Town, South Africa
| | - Johna Register-Mihalik
- Matthew Gfeller Sport-Related Traumatic Brain Injury Research Center, Department of Exercise and Sport Science, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA.,Injury Prevention Research Center and Rehab University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA.,Department of Exercise and Sport Science, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina U.S.A
| | - Ian Murphy
- Injury Prevention and Welfare, New Zealand Rugby, Wellington, New Zealand
| | - Simon Walters
- School of Sport and Recreation, Sports Performance Research Institute New Zealand, Auckland University of Technology, Auckland, New Zealand
| | - Amanda Clacy
- Vitality Village, Wearebe, Kensington, Queensland, Australia
| | - Gisela Sole
- Centre of Health, Activity, Rehabilitation Research, School of Physiotherapy, University of Otago, Dunedin, New Zealand
| | - Zachary Y Kerr
- Matthew Gfeller Sport-Related Traumatic Brain Injury Research Center, Department of Exercise and Sport Science, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA.,Injury Prevention Research Center and Rehab University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA.,Department of Exercise and Sport Science, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina U.S.A
| | - Karen Rasmussen
- Injury Prevention and Welfare, New Zealand Rugby, Wellington, New Zealand
| | - Mike England
- Injury Prevention and Welfare, New Zealand Rugby, Wellington, New Zealand
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9
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Hänninen T, Parkkari J, Howell DR, Palola V, Seppänen A, Tuominen M, Iverson GL, Luoto TM. Reliability of the Sport Concussion Assessment Tool 5 baseline testing: A 2-week test-retest study. J Sci Med Sport 2020; 24:129-134. [PMID: 32868203 DOI: 10.1016/j.jsams.2020.07.014] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2020] [Revised: 07/17/2020] [Accepted: 07/27/2020] [Indexed: 11/16/2022]
Abstract
OBJECTIVES To examine short-term test-retest reliability of the Sport Concussion Assessment Tool 5 (SCAT5). DESIGN Longitudinal study. METHODS Sixty-two professional male ice hockey players (mean age=22.5, SD=3.2) completed a preseason baseline test twice over a two-week interval. Half of the players were tested by the same assessor on both testing sessions. Spearman's correlations (rs) were used to determine linear agreements, and Wilcoxon signed rank tests (sig r) were used to determine mean differences, between testing sessions. RESULTS Symptoms had high test-retest reliability (Score: rs=0.85, p<0.001, sig r p<0.001; Severity: rs=0.84, p<0.001, sig r p<0.001). The reliability coefficients for the SAC (rs=0.58, p<0.001, sig r: p=0.412), and mBESS (rs=0.40, p=0.001, sig r: p=0.607) were considerably lower than symptoms. More than half (52%) of the athletes reported at least one baseline symptom (Md=1, M=2.2, SD=3.3). The most commonly reported symptoms were fatigue or low energy and neck pain. The broad ranges of SAC total scores (range=28-45, Md=35, M=35.4, SD=4.2) and SAC test-retest change scores (range -7 to +11) were mostly due to variability on the memory performance, tested using 10-item word lists. The number of mBESS single leg stance errors (Md=1, Md 3.2, SD=4.0) was greater than Tandem stance errors (Md=0, Md=2.0, SD=3.6). CONCLUSIONS The two-week test-retest reliability of the SCAT5 baseline scores varied from moderate to high. However, there was considerable individual variability on the SAC and mBESS scores and most players have notable short-term fluctuation on performance even if uninjured. Recommendations for interpreting change on the SCAT5 are provided.
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Affiliation(s)
- Timo Hänninen
- Tampere Research Centre of Sports Medicine, UKK Institute for Health Promotion Research, Finland.
| | - Jari Parkkari
- Tampere Research Centre of Sports Medicine, UKK Institute for Health Promotion Research, Finland
| | - David R Howell
- Sports Medicine Center, Children's Hospital Colorado, USA; Department of Orthopedics, University of Colorado School of Medicine, USA
| | - Vili Palola
- Faculty of Medicine and Life Sciences, University of Tampere, Finland
| | - Arttu Seppänen
- Faculty of Medicine and Life Sciences, University of Tampere, Finland
| | - Markku Tuominen
- IIHF Medical Committee; Liiga/Finnish Ice Hockey Association; Medisport Inc, Finland
| | - Grant L Iverson
- Department of Physical Medicine and Rehabilitation, Harvard Medical School, Spaulding Rehabilitation Hospital and Spaulding Research Institute, MassGeneral Hospital for Children™ Sport Concussion Program, Home Base, A Red Sox Foundation and Massachusetts General Hospital Program, USA
| | - Teemu M Luoto
- Department of Neurosurgery, Tampere University Hospital and Tampere University, Finland
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Sport Concussion Assessment Tool: Fifth Edition Normative Reference Values for Professional Rugby Union Players. Clin J Sport Med 2020; 30:e150-e153. [PMID: 30589747 DOI: 10.1097/jsm.0000000000000713] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
OBJECTIVE To describe distributions and establish normative ranges for new or changed subcomponents of the Sports Concussion Assessment Tool (SCAT)-5. DESIGN Cross-sectional study. SETTING AND PARTICIPANTS Professional Rugby Union players performing 2017 preseason baseline SCAT-5 testing. INDEPENDENT VARIABLES Subcomponent tests newly introduced or changed in the SCAT-5. MAIN MEASUREMENTS The 10-word immediate and delayed recall tests and the rapid neurological screen. RESULTS Thousand two hundred three players were included in complete case analyses. The 10-word immediate recall test [median score 15, interquartile range (IQR) 15-22, range 3-30] showed an asymmetrical, bimodal distribution. The delayed recall test (median score 7, IQR 5-9, range 0-10) demonstrated a left skewed distribution. The diplopia and reading/following instruction tests of the neurological screen were performed normally by virtually all participants (98.5% and 99.6%, respectively). Normative classification ranges for each SCAT-5 subcomponents of interest were determined. CONCLUSIONS The increased spread of scores, with improved midrange centering, suggests that the increase to 10-word list lengths should improve the performance of immediate and delayed recall tests. Normative ranges will provide a distribution against which postinjury SCAT-5 scores can be compared and interpreted.
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11
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Abstract
OBJECTIVE Static balance, postural stability, and reaction time are commonly impaired after a sport-related concussion. The Sway Balance System assesses postural sway (ie, stability) and simple reaction time using the triaxial accelerometer built into iOS mobile devices. The purpose of this study was to provide normative data for children and adolescents and to examine for age and sex differences on the Sway Balance System. DESIGN Cross-sectional study. SETTING Middle and high schools across the United States. PARTICIPANTS Participants were 3763 youth aged 9 to 21 years who completed the Sway Balance System Sports protocol in accordance with the company's recommended methods (ie, 1 acclimation trial and 2-3 baseline tests). INDEPENDENT VARIABLES Age and sex. MAIN OUTCOME MEASURES Sway Balance score (0-100) and Sway Reaction Time score (0-100). STATISTICAL ANALYSIS A multivariate analysis of variance examined the effects of age and sex on balance and reaction time scores. RESULTS Sway Balance and Reaction Time scores significantly differed by age [F(10, 7494) = 39.68, P < 0.001, V = 0.10, = 0.05] and sex [F(4, 7494) = 55.29, P < 0.001, V = 0.06, = 0.03]. Post hoc analyses revealed that older groups generally had better scores than younger groups on all balance comparisons (ps < 0.001) and many reaction time comparisons. Girls performed better than boys on balance [F(2, 3747) = 53.79, P < 0.001, = 0.03] and boys had faster reaction times [F(2, 3747) = 37.11, P < 0.001, = 0.02]. CONCLUSIONS Age and sex are important factors to consider when assessing Balance and Reaction Time scores using the Sway Balance System's Sports protocol in youth. We provide age- and sex-based normative values for the Sway Balance System, which will likely be helpful when using this technology to assess and manage concussions.
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12
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Vedung F, Hänni S, Tegner Y, Johansson J, Marklund N. Concussion incidence and recovery in Swedish elite soccer - Prolonged recovery in female players. Scand J Med Sci Sports 2020; 30:947-957. [PMID: 32100894 DOI: 10.1111/sms.13644] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2019] [Revised: 12/06/2019] [Accepted: 02/05/2020] [Indexed: 01/24/2023]
Abstract
OBJECTIVES Sport-related concussions are an increasingly recognized health problem. Soccer is the most popular sport in the world although recent studies on concussion incidence are scarce. Here, a nationwide prospective study on concussion incidence, symptom severity, risk factors, gender differences, and return-to-play after concussion was performed in 51 Swedish elite soccer teams during the 2017 season. METHODS In the 1st and 2nd soccer leagues for men and women, a Sport Concussion Assessment Tool (SCAT)-based questionnaire study was performed at preseason (baseline) and from 48 hours to 3 months post-concussion. RESULTS We followed 959 players (389 women, 570 men) for 25 146 player game hours (9867 hours for women, 15 279 hours for men). Concussion incidence (n = 36 concussions during the season) was 1.19/1000 player game hours (females 1.22/1000 hours, males 1.18/1000 hours; P = .85). Twenty-seven percent of all players (8% of females, 40% of males) continued to play immediately after the concussion. When compared to male players, female players had worse initial symptom severity scores (median and IQR 30 (17-50.5) vs 11 (4-26.25), P = .02) on SCAT and longer return-to-play (P = .02). Risk factors for concussion were baseline symptoms and previous concussion. CONCLUSION In Swedish elite soccer, the concussion incidence was 1.19/1000 without gender differences. Most players recovered to play within 4 weeks post-injury. Almost one third of players continued to play at time of concussion. Female players had worse initial symptoms and longer return-to-play time than males, and a prolonged recovery beyond 3 months was only observed among female players.
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Affiliation(s)
- Fredrik Vedung
- Department of Neuroscience, Neurosurgery, Uppsala University, Uppsala, Sweden
| | - Sofie Hänni
- Department of Surgical Sciences, Anesthesiology, Uppsala University, Uppsala, Sweden
| | - Yelverton Tegner
- Department of Health Sciences, Luleå University of Technology, Luleå, Sweden
| | - Jakob Johansson
- Department of Surgical Sciences, Anesthesiology, Uppsala University, Uppsala, Sweden
| | - Niklas Marklund
- Department of Neuroscience, Neurosurgery, Uppsala University, Uppsala, Sweden.,Department of Clinical Sciences Lund, Neurosurgery, Skane University Hospital, Lund University, Lund, Sweden
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Chrisman SPD, Lowry S, Herring SA, Kroshus E, Hoopes TR, Higgins SK, Rivara FP. Concussion Incidence, Duration, and Return to School and Sport in 5- to 14-Year-Old American Football Athletes. J Pediatr 2019; 207:176-184.e1. [PMID: 30554790 DOI: 10.1016/j.jpeds.2018.11.003] [Citation(s) in RCA: 33] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/19/2018] [Revised: 10/18/2018] [Accepted: 11/02/2018] [Indexed: 12/17/2022]
Abstract
OBJECTIVE To collect prospective data on concussion incidence, risk factors, duration of symptoms, and return to school and sport in 5- to 14-year-old American football participants. STUDY DESIGN We conducted a prospective cohort study over 2 years collecting data during two 10-week fall seasons. Youth with concussion were followed to determine time to return to school, sport, and baseline level of symptoms. Logistic regression was used to estimate the risk of sustaining a concussion associated with baseline demographic factors. Time to return to school, sport, and baseline symptoms were analyzed using Kaplan-Meier survival curves. RESULTS Of 863 youth followed (996 player-seasons), 51 sustained a football-related concussion, for an athlete-level incidence of 5.1% per season. Youth with history of concussion had a 2-fold increased risk for sustaining an incident concussion (OR, 2.2; 95% CI, 1.1-4.8). Youth with depression had a 5-fold increased risk of concussion (OR, 5.6; 95% CI, 1.7-18.8). After a concussion, 50% of athletes returned to school by 3 days, 50% returned to sport by 13 days, and 50% returned to a baseline level of symptoms by 3 weeks. CONCLUSIONS Concussion rates in this study were slightly higher than previously reported, with 5 of every 100 youth sustaining a football-related concussion each season. One-half of youth were still symptomatic 3 weeks after injury. Further research is needed to address the risk of concussion in youth football.
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Affiliation(s)
- Sara P D Chrisman
- Center for Child Health, Behavior and Development, Seattle Children's Research Institute, Seattle, WA; Department of Pediatrics, University of Washington, Seattle, WA; Harborview Injury Prevention and Research Center, Seattle, WA.
| | - Sarah Lowry
- Center for Child Health, Behavior and Development, Seattle Children's Research Institute, Seattle, WA; Department of Epidemiology, University of Washington, Seattle, WA
| | - Stanley A Herring
- Harborview Injury Prevention and Research Center, Seattle, WA; Department of Rehabilitation Medicine, Orthopedics and Sports Medicine, and Neurological Surgery, University of Washington, Seattle, WA
| | - Emily Kroshus
- Center for Child Health, Behavior and Development, Seattle Children's Research Institute, Seattle, WA; Department of Pediatrics, University of Washington, Seattle, WA
| | - Teah R Hoopes
- Center for Child Health, Behavior and Development, Seattle Children's Research Institute, Seattle, WA
| | - Shannon K Higgins
- Center for Child Health, Behavior and Development, Seattle Children's Research Institute, Seattle, WA
| | - Frederick P Rivara
- Center for Child Health, Behavior and Development, Seattle Children's Research Institute, Seattle, WA; Department of Pediatrics, University of Washington, Seattle, WA; Harborview Injury Prevention and Research Center, Seattle, WA
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14
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Peltonen K, Vartiainen M, Laitala-Leinonen T, Koskinen S, Luoto T, Pertab J, Hokkanen L. Adolescent athletes with learning disability display atypical maturational trajectories on concussion baseline testing: Implications based on a Finnish sample. Child Neuropsychol 2018; 25:336-351. [DOI: 10.1080/09297049.2018.1474865] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/16/2022]
Affiliation(s)
- Kati Peltonen
- Department of Psychology and Logopedics, University of Helsinki, Helsinki, Finland
| | - Matti Vartiainen
- Department of Psychology and Logopedics, University of Helsinki, Helsinki, Finland
| | | | - Sanna Koskinen
- Department of Psychology and Logopedics, University of Helsinki, Helsinki, Finland
| | - Teemu Luoto
- Department of Neurosurgery, Tampere University Hospital, Tampere, Finland
| | - Jon Pertab
- Neurosciences Institute, Intermountain Healthcare, Murray, UT, USA
| | - Laura Hokkanen
- Department of Psychology and Logopedics, University of Helsinki, Helsinki, Finland
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15
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Hänninen T, Parkkari J, Tuominen M, Öhman J, Howell DR, Iverson GL, Luoto TM. Sport Concussion Assessment Tool: Interpreting day-of-injury scores in professional ice hockey players. J Sci Med Sport 2017; 21:794-799. [PMID: 29254676 DOI: 10.1016/j.jsams.2017.12.001] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2017] [Revised: 10/18/2017] [Accepted: 12/04/2017] [Indexed: 11/25/2022]
Abstract
OBJECTIVES To characterize the clinical utility of Sport Concussion Assessment Tool 3 (SCAT3) baseline and normative reference values for the assessment of acute concussion; and to identify the sensitivity of each SCAT3 subcomponent to the acute effects of concussion. DESIGN Prospective cohort. METHODS The day-of-concussion SCAT3 results (n=27) of professional male ice hockey players (mean age=27, SD=4) were compared to athlete's individual baseline and to the league's normative reference values. Normative cutoffs corresponding to 10th percentile and natural distribution change cutoffs corresponding to 90th percentile cumulative frequency were considered uncommon. RESULTS The percentages of the players with uncommon day-of-injury performance, when post-injury scores were compared to individual baseline versus (vs.) normative values, were as follows: symptoms: 96% vs. 100% (post-injury score: M=12, Md=12, SD=4; severity M=26, Md=23, SD=13); Standardized Assessment of Concussion (SAC): 33% vs. 27% (post-injury M=25, Md=26, SD=3); modified-BESS (M-BESS): 46% vs. 46% (post-injury M=7, Md=5, SD=7); Tandem Gait: 18% vs. 31% (post-injury M=11, Md=12, SD=4); coordination: both 8%. The number and severity of post-injury symptoms were significantly greater, with extremely large effect sizes (Cohen's d=2.44-3.92), than normative values and individual baseline scores. The post-injury SAC score was significantly lower relative to both baseline (d=0.68) and normative values (d=0.88). The post-injury M-BESS performance was significantly worse when compared to both individual baseline (d=1.06) and league normative values (d=1.46). No significant day-of-injury Tandem Gait deficits were observed using either comparison method. CONCLUSIONS SCAT3 league normative values were as sensitive as individual baseline scores during day-of-injury assessments. Symptoms were the most sensitive post-concussion component of the SCAT3.
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Affiliation(s)
- Timo Hänninen
- Tampere Research Centre of Sports Medicine, UKK Institute for Health Promotion Research, Finland.
| | - Jari Parkkari
- Tampere Research Centre of Sports Medicine, UKK Institute for Health Promotion Research, Finland
| | - Markku Tuominen
- IIHF Medical Committee, Liiga/Finnish Ice Hockey Association, Medisport Inc., Finland
| | - Juha Öhman
- Department of Neurosciences and Rehabilitation, Tampere University Hospital, Finland
| | - David R Howell
- Sports Medicine Center, Children's Hospital Colorado, USA; Department of Orthopedics, University of Colorado School of Medicine, USA
| | - Grant L Iverson
- Department of Physical Medicine and Rehabilitation, Harvard Medical School, Spaulding Rehabilitation Hospital, MassGeneral Hospital for Children™ Sport Concussion Program, & Home Base, A Red Sox Foundation and Massachusetts General Hospital Program, USA
| | - Teemu M Luoto
- Department of Neurosurgery, Tampere University Hospital, Finland
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16
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Fuller GW, Govind O, Tucker R, Raftery M. Sport concussion assessment tool-Third edition normative reference values for professional Rugby Union players. J Sci Med Sport 2017; 21:347-351. [PMID: 28843846 DOI: 10.1016/j.jsams.2017.07.025] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2017] [Revised: 07/17/2017] [Accepted: 07/27/2017] [Indexed: 11/19/2022]
Abstract
OBJECTIVES To establish normative reference data for the SCAT3 in professional Rugby Union players. DESIGN A cross sectional study in professional Rugby Union players competing in national and international professional competitions between 2015 and 2016. METHODS The SCAT3 was administered pre-season or prior to tournaments. Data was collected electronically using a custom tablet application. SCAT3 subcomponents distributions were described and normative ranges determined using percentile cut-offs for average, unusually low/high, and extremely low/high scores. The association between player characteristics and performance in SCAT3 subcomponents was also investigated in exploratory analyses. RESULTS A total of 3611 professional Rugby Union players were included. The most common baseline symptom was fatigue (14%). The symptom score median (md) was 0 (interquartile range (IQR)=0-1). Symptom severity md was 0 (IQR=0-1). The md of the SAC score was 28 (IQR=26-29). The md of the MBESS was 2 (IQR=0-4). The Tandem gait md was 11.1s (IQR=10.0-12.7s). Upper limb coordination was normal in 98.4%. Younger age and lower educational level were associated with worse performance on delayed recall and reverse month sub-components of the SCAT3 (p<0.0001). No statistically significant differences in SCAT3 subcomponents were evident across gender. CONCLUSIONS Representative normative reference values for the SCAT3 among professional Rugby Union players are provided. Baseline performance on concentration and delayed recall tests may be lower in younger athletes or in those with lower educational level.
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Affiliation(s)
- G W Fuller
- Centre for Urgent and Emergency Care Research, School of Health and Related Research, University of Sheffield, UK.
| | - O Govind
- Humanitarian and Conflict Response Institute, University of Manchester, UK
| | - R Tucker
- World Rugby, World Rugby House, Ireland
| | - M Raftery
- World Rugby, World Rugby House, Ireland
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18
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Churchill NW, Hutchison MG, Graham SJ, Schweizer TA. Symptom correlates of cerebral blood flow following acute concussion. Neuroimage Clin 2017; 16:234-239. [PMID: 28794982 PMCID: PMC5545814 DOI: 10.1016/j.nicl.2017.07.019] [Citation(s) in RCA: 46] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2017] [Revised: 07/06/2017] [Accepted: 07/22/2017] [Indexed: 11/03/2022]
Abstract
Concussion is associated with significant symptoms within hours to days post-injury, including disturbances in physical function, cognition, sleep and emotion. However, little is known about how subjective impairments correlate with objective measures of cerebrovascular function following brain injury. This study examined the relationship between symptoms and cerebral blood flow (CBF) in individuals following sport-related concussion. Seventy university level athletes had CBF measured using Arterial Spin Labelling (ASL), including 35 with acute concussion and 35 matched controls and their symptoms were assessed using the Sport Concussion Assessment Tool 3 (SCAT3). For concussed athletes, greater total symptom severity was associated with elevated posterior cortical CBF, although mean CBF was not significantly different from matched controls (p = 0.46). Examining symptom clusters, athletes reporting greater cognitive symptoms also had lower frontal and subcortical CBF, relative to athletes with greater somatic symptoms. The "cognitive" and "somatic" subgroups also exhibited significant differences in CBF relative to controls (p ≤ 0.026). This study demonstrates objective CBF correlates of symptoms in recently concussed athletes and shows that specific symptom clusters may have distinct patterns of altered CBF, significantly extending our understanding of the neurobiology of concussion and traumatic brain injury.
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Affiliation(s)
- Nathan W. Churchill
- Neuroscience Research Program, St. Michael’s Hospital, Toronto, ON, Canada
- Keenan Research Centre for Biomedical Science of St. Michael’s Hospital, Toronto, ON, Canada
| | - Michael G. Hutchison
- Keenan Research Centre for Biomedical Science of St. Michael’s Hospital, Toronto, ON, Canada
- Faculty of Kinesiology and Physical Education, University of Toronto, Toronto, ON, Canada
| | - Simon J. Graham
- Departement of Medical Biophysics, University of Toronto, Sunnybrook Hospital, Toronto, ON, Canada
- Physical Sciences Platform, Sunnybrook Research Institute, Sunnybrook Health Sciences Centre, Toronto, ON, Canada
| | - Tom A. Schweizer
- Neuroscience Research Program, St. Michael’s Hospital, Toronto, ON, Canada
- Keenan Research Centre for Biomedical Science of St. Michael’s Hospital, Toronto, ON, Canada
- Faculty of Medicine (Neurosurgery) University of Toronto, Toronto, ON, Canada
- The Institute of Biomaterials & Biomedical Engineering (IBBME) at the University of Toronto, Toronto, ON, Canada
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