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Ruff J, Taeymans J, Blasimann A, Rogan S. Analysis of Injuries in the Swiss U20 Elite Ice Hockey Season 2019/2020-A Retrospective Survey. Sports (Basel) 2024; 12:88. [PMID: 38668556 PMCID: PMC11054159 DOI: 10.3390/sports12040088] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2024] [Revised: 03/15/2024] [Accepted: 03/18/2024] [Indexed: 04/29/2024] Open
Abstract
(1) Background: In Switzerland, there is little data on injury characteristics in elite ice hockey players aged under 20 years (U20 Elite juniors). This study aimed to determine the injury rate and type of injury in Swiss U20 ice hockey players. (2) Methods: The present study was carried out in a retrospective, non-experimental design using an online questionnaire provided to the 314 elite players of the 12 Swiss U20 Elite ice hockey teams. The injury rate, rate ratios, injury location, type and severity of injury, and injury mechanism were reported. (3) Results: Seventy-three athletes from 11 teams volunteered (response rate = 24%). A total of 30 out of 45 recorded injuries led to time loss in practice and competition. Injury occurred once or twice during the 2019/2020 season. For each player, the injury rate was 0.66 per 1000 practice hours and 2.98 per 1000 competition hours (injury rate ratio = 4.5). The head/neck region was the most common injury location (45.5%). (4) Conclusions: Knowledge of injury characteristics in ice hockey is necessary for meaningful injury management and injury prevention. The results of the present study provide information on the injury rate, location, types, severity, and mechanism in elite Swiss U20 ice hockey players. Most injuries result from contact with another player. More strict sanctioning for irregular behavior and fair play can serve as preventive measures. Further studies should examine different preventive measures such as wearing full-face coverage.
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Affiliation(s)
- Jonas Ruff
- Division of Physiotherapy, School of Health Professions, Bern University of Applied Sciences, Murtenstrasse 10, 3008 Bern, Switzerland; (J.R.); (J.T.); (S.R.)
| | - Jan Taeymans
- Division of Physiotherapy, School of Health Professions, Bern University of Applied Sciences, Murtenstrasse 10, 3008 Bern, Switzerland; (J.R.); (J.T.); (S.R.)
- Department of Movement and Sports Sciences, Faculty of Physical Education and Physical Therapy, Free University of Brussels, Pleinlaan 2, 1050 Brussels, Belgium
| | - Angela Blasimann
- Division of Physiotherapy, School of Health Professions, Bern University of Applied Sciences, Murtenstrasse 10, 3008 Bern, Switzerland; (J.R.); (J.T.); (S.R.)
| | - Slavko Rogan
- Division of Physiotherapy, School of Health Professions, Bern University of Applied Sciences, Murtenstrasse 10, 3008 Bern, Switzerland; (J.R.); (J.T.); (S.R.)
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Reinebo G, Björverud LG, Parling T, Andersson G, Jansson-Fröjmark M, Lundgren T. Development and experiences of an internet-based acceptance and commitment training (I-ACT) intervention in ice hockey players: a qualitative feasibility study. Front Sports Act Living 2024; 6:1297631. [PMID: 38584684 PMCID: PMC10995355 DOI: 10.3389/fspor.2024.1297631] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2023] [Accepted: 03/11/2024] [Indexed: 04/09/2024] Open
Abstract
Internet-based psychological interventions have increased the accessibility of evidence-based treatments in clinical psychology but are still an unexplored delivery format in sport psychology research. This study describes the development and evaluates the experiences of an internet-based acceptance and commitment therapy/training (I-ACT) intervention in ice hockey players focusing on performance enhancement and a sustainable sport participation. I-ACT consisted of seven weekly modules and the feasibility of the intervention was investigated using a qualitative research design. Four national level ice hockey players took part of I-ACT and were interviewed about their experiences using a semi-structured protocol. Interview transcripts were analyzed using qualitative content analysis. Findings suggest that the content of I-ACT was comprehensible, relevant, and that it was possible to put the psychological skills into practice. I-ACT was described as helpful to the ice hockey players either in their sport performance or in their life outside of sport. The internet-format was generally perceived as positive, flexible, and a feasible option for delivering psychological interventions in an elite sport context. Some concerns were raised regarding the timing of the intervention at the end of the season, and some players also wished for more time to complete I-ACT. It was also expressed that some of the exercises could have been better adapted for goaltenders. Further trials are needed to evaluate the effects of I-ACT on performance and mental health outcomes in various sport populations using robust quantitative research methodology. Internet-based psychological interventions are a potential future opportunity to make evidence-based practices more accessible for athletes.
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Affiliation(s)
- Gustaf Reinebo
- Centre for Psychiatry Research, Department of Clinical Neuroscience, Karolinska Institutet, & Stockholm Health Care Services, Region Stockholm, Stockholm, Sweden
| | - Linda G. Björverud
- Centre for Psychiatry Research, Department of Clinical Neuroscience, Karolinska Institutet, & Stockholm Health Care Services, Region Stockholm, Stockholm, Sweden
| | - Thomas Parling
- Centre for Psychiatry Research, Department of Clinical Neuroscience, Karolinska Institutet, & Stockholm Health Care Services, Region Stockholm, Stockholm, Sweden
| | - Gerhard Andersson
- Centre for Psychiatry Research, Department of Clinical Neuroscience, Karolinska Institutet, & Stockholm Health Care Services, Region Stockholm, Stockholm, Sweden
- Department of Behavioural Sciences and Learning, Department of Biomedical and Clinical Sciences, Linköping University, Linköping, Sweden
| | - Markus Jansson-Fröjmark
- Centre for Psychiatry Research, Department of Clinical Neuroscience, Karolinska Institutet, & Stockholm Health Care Services, Region Stockholm, Stockholm, Sweden
| | - Tobias Lundgren
- Centre for Psychiatry Research, Department of Clinical Neuroscience, Karolinska Institutet, & Stockholm Health Care Services, Region Stockholm, Stockholm, Sweden
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Suzuki K, Yoneoka D, Terada M, Kenjo K, Koyanagi T, Suzuki Y. Injury rate and characteristics in Japanese male professional ice hockey players: prospective study of 60 players over 10 seasons. BMJ Open Sport Exerc Med 2024; 10:e001720. [PMID: 38511169 PMCID: PMC10952867 DOI: 10.1136/bmjsem-2023-001720] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/11/2024] [Indexed: 03/22/2024] Open
Abstract
Objectives We aimed to assess the injury rate and characteristics in Japanese male professional ice hockey players. Methods This study involved an inclusive cohort of male ice hockey players from a Japanese professional team competing in the 2010-2011 through the 2019-2020 seasons. An injury was defined as the 'time-loss and medical attention' definition of the International Ice Hockey Federation. All injuries that occurred during games and practice sessions were recorded daily on injury charts by the team athletic trainers and/or physician. Game-related injury rates were analysed using both the athlete-at-risk (AAR) and time on ice (TOI) methods. Results Sixty players were included in the study. A total of 479 injuries were recorded, with 307 (64%) occurring during 451 games and 172 (36%) occurring during the practice sessions. The game-related injury rates obtained using the AAR and TOI methods were not statistically different (p>0.05): 115.3 (95% CI 107.1 to 123.1) and 116.8 (95% CI 109.9 to 124.7) per 1000 player-game hours, respectively. Most injuries involved the upper extremities (39.9% game-related, 32.6% practice-related), followed by the lower extremities (23.5% game-related, 32.5% practice-related). The most frequent mechanism of game-related injury was body checking (45.4%). Conclusion We observed a higher injury rate in a Japanese male professional team compared with rates reported in other leagues. The reported injury characteristics should help to improve injury prevention strategies that should target shoulder dislocations caused by body checking, and finger or wrist fractures resulting from contact with a hockey stick or puck impact.
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Affiliation(s)
- Katsunori Suzuki
- Department of Orthopaedic Surgery, Oji General Hospital, Tomakomai, Hokkaido, Japan
| | - Daisuke Yoneoka
- National Institute of Infectious Diseases, Shinjuku-ku, Tokyo, Japan
| | - Masakazu Terada
- Red Eagles Hokkaido Ice Hockey Team, Tomakomai, Hokkaido, Japan
| | - Katsuyuki Kenjo
- Red Eagles Hokkaido Ice Hockey Team, Tomakomai, Hokkaido, Japan
| | | | - Yuki Suzuki
- Department of Orthopaedic Surgery, Hokkaido University School of Medicine, Sapporo, Hokkaido, Japan
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Jiménez-Casquet MJ, Conde-Pipo J, Valenzuela-Barranco I, Rienda-Contreras R, Olea-Serrano F, Monserrat-Mesquida M, Tur JA, Bouzas C, Mariscal-Arcas M. Cross-Sectional Study of the Anthropometric Profile and Nutrient Status of Elite Female Ice Hockey Players: Differences by Play Position. Nutrients 2024; 16:471. [PMID: 38398795 PMCID: PMC10891979 DOI: 10.3390/nu16040471] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2023] [Revised: 02/04/2024] [Accepted: 02/05/2024] [Indexed: 02/25/2024] Open
Abstract
Both the characteristics of ice hockey and the environmental conditions in which it is played affect the maintenance of the player's nutritional status and, therefore, their state of health and performance. The primary aim of this work was to examine the anthropometric profile, estimated energy expenditure, and macronutrient and micronutrient dietary intake of elite female ice hockey players by play position. As a secondary aim, their dietary intakes were compared with the recommendations. Hypotheses suggest variations in body composition based on ice hockey players' positions, with the expectation that these athletes may not align with energy and nutrient recommendations. Fifteen elite female ice hockey players were anthropometrically measured, basal metabolic rate and total energy expenditure were estimated, a 3-day, 24 h recall questionnaire was registered, and the results were compared with the recommended dietary intake for the Spanish population. Each player's position on the field requires an individualized physical and nutritional approach. There are no significant imbalances (p > 0.05) between energy and nutrient intake in relation to the Recommended Daily Intake (RDI); however, increasing the consumption of vegetables and seafood while reducing meat and fat intake would assist these athletes in maintaining a healthier energy balance, optimizing body composition, and aligning with nutritional parameters that are better suited to enhance physical performance.
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Affiliation(s)
- María José Jiménez-Casquet
- Health Science and Nutrition Research (HSNR-CTS1118), Department of Nutrition and Food Science, School of Pharmacy, University of Granada, 18071 Granada, Spain (J.C.-P.); (F.O.-S.); (M.M.-A.)
| | - Javier Conde-Pipo
- Health Science and Nutrition Research (HSNR-CTS1118), Department of Nutrition and Food Science, School of Pharmacy, University of Granada, 18071 Granada, Spain (J.C.-P.); (F.O.-S.); (M.M.-A.)
| | | | - Raquel Rienda-Contreras
- Department of Sports and Women, Andalusian Federation of Winter Sports (FADI), 18008 Granada, Spain;
| | - Fátima Olea-Serrano
- Health Science and Nutrition Research (HSNR-CTS1118), Department of Nutrition and Food Science, School of Pharmacy, University of Granada, 18071 Granada, Spain (J.C.-P.); (F.O.-S.); (M.M.-A.)
- Instituto de Investigación Biosanitaria de Granada (ibs.GRANADA), 18012 Granada, Spain
| | - Margalida Monserrat-Mesquida
- Research Group on Community Nutrition and Oxidative Stress, Laboratory of Physical Activity Sciences, University of Balearic Islands-IUNICS, 07122 Palma de Mallorca, Spain; (M.M.-M.); (J.A.T.)
- Centro de Investigación Biomédica en Red Fisiopatología de la Obesidad y la Nutrición (CIBEROBN), Institute of Health Carlos III, 28029 Madrid, Spain
- Health Research Institute of the Balearic Islands, 07120 Palma de Mallorca, Spain
| | - Josep A. Tur
- Research Group on Community Nutrition and Oxidative Stress, Laboratory of Physical Activity Sciences, University of Balearic Islands-IUNICS, 07122 Palma de Mallorca, Spain; (M.M.-M.); (J.A.T.)
- Centro de Investigación Biomédica en Red Fisiopatología de la Obesidad y la Nutrición (CIBEROBN), Institute of Health Carlos III, 28029 Madrid, Spain
- Health Research Institute of the Balearic Islands, 07120 Palma de Mallorca, Spain
| | - Cristina Bouzas
- Research Group on Community Nutrition and Oxidative Stress, Laboratory of Physical Activity Sciences, University of Balearic Islands-IUNICS, 07122 Palma de Mallorca, Spain; (M.M.-M.); (J.A.T.)
- Centro de Investigación Biomédica en Red Fisiopatología de la Obesidad y la Nutrición (CIBEROBN), Institute of Health Carlos III, 28029 Madrid, Spain
- Health Research Institute of the Balearic Islands, 07120 Palma de Mallorca, Spain
| | - Miguel Mariscal-Arcas
- Health Science and Nutrition Research (HSNR-CTS1118), Department of Nutrition and Food Science, School of Pharmacy, University of Granada, 18071 Granada, Spain (J.C.-P.); (F.O.-S.); (M.M.-A.)
- Instituto de Investigación Biosanitaria de Granada (ibs.GRANADA), 18012 Granada, Spain
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Brocherie F, Stetter BJ, Poltavski D, Vigh-Larsen JF. Editorial: Hockey: testing and performance. Front Sports Act Living 2024; 6:1364470. [PMID: 38333429 PMCID: PMC10850374 DOI: 10.3389/fspor.2024.1364470] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2024] [Accepted: 01/05/2024] [Indexed: 02/10/2024] Open
Affiliation(s)
- Franck Brocherie
- Laboratory Sport, Expertise and Performance (EA 7370), French Institute of Sport, Paris, France
| | - Bernd J. Stetter
- Institute of Sports and Sports Science, Karlsruhe Institute of Technology (KIT), Karlsruhe, Germany
| | - Dmitri Poltavski
- Department of Psychology, University of North Dakota, Grand Forks, ND, United States
| | - Jeppe F. Vigh-Larsen
- Department of Sports Science and Clinical Biomechanics, University of Southern Denmark, Odense, Denmark
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Christensen S, Gjelstad A, Björnsdottir I, Lauritzen F. Medicalization of Sport? A Mixed-Method Study on the Use of Medications in Elite Ice Hockey. Sports (Basel) 2024; 12:19. [PMID: 38251293 PMCID: PMC10818849 DOI: 10.3390/sports12010019] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2023] [Revised: 12/20/2023] [Accepted: 12/25/2023] [Indexed: 01/23/2024] Open
Abstract
Ice hockey is a high-risk sport known for its dominant macho culture. The purpose of this study was to examine experiences surrounding medication use among male, elite ice hockey players in Norway. A mixed-method design was employed, which first examined medications registered on doping control forms (DCFs) (n = 177) and then involved semi-structured focus group interviews (n = 5) with elite athletes (n = 25). Overall, 68% of the DCFs contained information about ≥1 medication. Among the most registered medications were NSAIDs and hypnotics (20% and 19% of all DCFs, respectively). During the interviews, numerous athletes reported using analgesics to manage injuries and pain caused by the sport, often being motivated by sacrificing themselves for the team during important matches and playoffs. Hypnotics were used due to high cumulative stress due to heavy training and competition load, late-night matches, and playing in a semi-professional league. Athlete support personnel (ASP), including physicians and trainers, were the athletes' main sources of information. The athletes often displayed a profound and non-critical trust in the advice and products provided to them by their team physician. The findings indicate that male, elite ice hockey players, through their excessive and somewhat ignorant use of medications, expose themselves to health risks and inadvertent doping.
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Affiliation(s)
- Sofie Christensen
- Science and Medicine, Anti-Doping Norway, 0855 Oslo, Norway (A.G.)
- Department of Pharmaceutics and Social Pharmacy, School of Pharmacy, University of Oslo, 0316 Oslo, Norway;
| | - Astrid Gjelstad
- Science and Medicine, Anti-Doping Norway, 0855 Oslo, Norway (A.G.)
- Department of Pharmaceutical Chemistry, School of Pharmacy, University of Oslo, 0316 Oslo, Norway
| | - Ingunn Björnsdottir
- Department of Pharmaceutics and Social Pharmacy, School of Pharmacy, University of Oslo, 0316 Oslo, Norway;
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Cattaneo M, Ramponi C, Thorborg K. What is the Injury Incidence and Profile in Professional Male Ice Hockey? A Systematic Review. Int J Sports Phys Ther 2024; 19:1398-1409. [PMID: 38179586 PMCID: PMC10761628 DOI: 10.26603/001c.90591] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2023] [Accepted: 11/17/2023] [Indexed: 01/06/2024] Open
Abstract
BACKGROUND Professional male ice hockey is characterized by a congested in-season match schedule and by different scenarios where the whole body is exposed to great internal and external forces. Consequently, injuries occur from head to toe. However, there is a lack of data synthesis regarding the injury incidence and profile in this population. PURPOSE The aim of this study was to conduct a systematic review to quantify the injury incidence rates in professional male ice hockey. STUDY DESIGN Systematic Review. METHODS The electronic databases PubMed, CINAHL, Web of Science, ProQuest-Sport medicine & Education Index, and Pro-Quest Dissertation and Thesis were searched utilizing terms related to ice hockey and injuries. Studies were included if they provided the incidence of injury in professional male hockey players and reported injuries in terms of time lost. The modified Newcastle Ottawa Scale for cohort studies and the Strengthening the Reporting of Observational Studies in Epidemiology - Sports Injury and Illness Surveillance Statement were used to assess the methodological quality of the studies. RESULTS Eleven studies were included in the review. Match injury incidence ranged from 38 to 88.6 injuries/1000 hours of exposure, whereas training injury incidence varied from 0.4 to 2.6 injuries/1000 hours of exposure. Injuries of traumatic origin accounted for 76% to 96.6% of all injuries, with contusions and lacerations being the most common. Severe injuries accounted for 7.8% - 20% of all injuries. The lower extremities were the most susceptible to injury, comprising 27% to 53.7% of all reported injuries. CONCLUSION Professional male ice hockey players are exposed to a substantial risk of injury during competitions, with lower extremities being the most commonly affected body part. The majority of injuries are traumatic and severe injuries account for a notable portion of overall injury cases.
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Affiliation(s)
- Marco Cattaneo
- DEASS University of Applied Sciences and Arts of Southern Switzerland
- Hockey Club Lugano, Switzerland
| | - Carlo Ramponi
- Physiotherapy Università Campus Bio-Medico
- Physiotherapy University of Padua
- Kiné Rehab Center, Treviso, Italy
| | - Kristian Thorborg
- Department of Orthopedic Surgery Copenhagen University Hospital
- Department of Clinical Medicine University of Copenhagen
- Physical Medicine & Rehabilitation Research-Copenhagen Copenhagen University Hospital
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Höllerer D, Kaiser P, Runer A, Steiner E, Koidl C, Arora R, Schneider F. Injury Incidence, Outcomes, and Return to Competition Times after Sports-Related Concussions during One Professional Ice Hockey Season: A Prospective Cohort Study. Healthcare (Basel) 2023; 11:3153. [PMID: 38132042 PMCID: PMC10742495 DOI: 10.3390/healthcare11243153] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2023] [Revised: 11/26/2023] [Accepted: 12/07/2023] [Indexed: 12/23/2023] Open
Abstract
OBJECTIVE The objective of this study was to analyze the incidence and characteristics of sports-related concussions (SRCs) for a professional ice hockey team during one regular season in the International Central European Hockey League. BACKGROUND Repeated concussions are a common cause of long periods of absence in team contact sports, with a wide range of potential short- and long-term consequences for the affected athlete. Questions mainly regarding early diagnosis and ideal follow-up treatment remain unanswered, especially regarding the timing of return to sports (RTS). METHOD A prospective data analysis for a professional ice hockey team during a regular season was conducted. Firstly, concussions per 1000 athlete exposure (AE) and average time loss due to SRC were calculated. Secondly, the data from ImPACT Applications were analyzed for those players who were diagnosed with an SRC. RESULTS Five SRCs were evaluated during the regular season, which resulted in 1.35 concussions/1000 AEs, a maximum of 17 missed games, and a median of three games per SRC. The average symptom count was 9.6, with the most common symptoms being headache, sensitivity to light, and dizziness. CONCLUSIONS SRCs sustained in professional ice hockey are a common in-competition injury, while practices play a subsidiary role. The duration of RTS is highly individual and can be associated with symptoms lasting days to months.
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Affiliation(s)
- Dominik Höllerer
- Faculty of Medicine, Medical University of Innsbruck, 6020 Innsbruck, Austria;
| | - Peter Kaiser
- Department of Orthopaedics and Traumatology, Medical University of Innsbruck, Anichstraße 35, 6020 Innsbruck, Austria
- HC TIWAG Innsbruck, 6020 Innsbruck, Austria
| | - Armin Runer
- Department of Orthopaedics and Traumatology, Medical University of Innsbruck, Anichstraße 35, 6020 Innsbruck, Austria
- HC TIWAG Innsbruck, 6020 Innsbruck, Austria
- Department of Sports Orthopaedics, Technical University of Munich, 81675 Munich, Germany
| | | | - Christian Koidl
- Department of Orthopaedics and Traumatology, Medical University of Innsbruck, Anichstraße 35, 6020 Innsbruck, Austria
- HC TIWAG Innsbruck, 6020 Innsbruck, Austria
| | - Rohit Arora
- Department of Orthopaedics and Traumatology, Medical University of Innsbruck, Anichstraße 35, 6020 Innsbruck, Austria
| | - Friedemann Schneider
- Department of Orthopaedics and Traumatology, Medical University of Innsbruck, Anichstraße 35, 6020 Innsbruck, Austria
- HC TIWAG Innsbruck, 6020 Innsbruck, Austria
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Ross KA, Mojica ES, Lott A, Carter C, Gonzalez-Lomas G. Characterization of pincer-type Hip impingement in professional women's ice hockey players. PHYSICIAN SPORTSMED 2023; 51:610-614. [PMID: 36503339 DOI: 10.1080/00913847.2022.2157683] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/01/2022] [Accepted: 12/06/2022] [Indexed: 12/14/2022]
Abstract
OBJECTIVE Femoroacetabular impingement (FAI) appears common in ice hockey, but there is a lack of data examining pincer-type impingement in women's ice hockey athletes. The objective of this study was to assess the prevalence of pincer-type impingement in National Women's Hockey League (NWHL) athletes. Our hypothesis was that there would be an increased prevalence of pincer impingement in these athletes. METHODS Data were gathered for a team of NWHL players, and age, gender, and body mass index (BMI) matched controls were also retrospectively collected. All subjects were above 18 years of age. Control patients were excluded if they had undergone prior hip surgery, were greater than age 30, or had BMI greater than 35. Radiographs of both groups were assessed for lateral center edge angle (LCEA), Tönnis angle, and crossover sign. Tönnis angle <0 or LCEA >40 degrees was considered pincer morphology. An alpha angle >55 degrees was considered cam morphology. RESULTS Thirty-seven NWHL players and 37 female controls were included. Overall 32% of the players had a pincer lesion in either hip based on LCEA, 8% had a Tönnis angle <0, and 22% had a crossover sign in either hip compared to 9%, 19%, and 13% for the controls, respectively. None of these findings were significantly different between the groups (p > 0.05). An alpha angle ≥55 degrees in either hip was found in 84% of players, but lateral Dunn images for alpha angle measurements were not available for the control group. CONCLUSIONS Pincer-type morphology and crossover signs were present in a larger portion of NWHL players than has been reported in the general population, but these findings were not statistically different than in the control group. Cam-type morphology was even more prevalent in these athletes and may be related to age at menarche due impingement at the physis prior to closure.
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Affiliation(s)
- Keir A Ross
- Department of Orthopedic Surgery, New York University School of Medicine, New York, NY, USA
| | - Edward S Mojica
- Department of Orthopedic Surgery, New York University School of Medicine, New York, NY, USA
| | - Ariana Lott
- Department of Orthopedic Surgery, New York University School of Medicine, New York, NY, USA
| | - Cordelia Carter
- Department of Orthopedic Surgery, New York University School of Medicine, New York, NY, USA
| | - Guillem Gonzalez-Lomas
- Department of Orthopedic Surgery, New York University School of Medicine, New York, NY, USA
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Brocherie F, Perez J. Debunking the myth of morning skate on game day. Front Sports Act Living 2023; 5:1284613. [PMID: 38022785 PMCID: PMC10667421 DOI: 10.3389/fspor.2023.1284613] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2023] [Accepted: 10/30/2023] [Indexed: 12/01/2023] Open
Affiliation(s)
- Franck Brocherie
- Laboratory Sport, Expertise and Performance (EA 7370), French Institute of Sport (INSEP), Paris, France
| | - Jerome Perez
- Performance Department, Brûleurs de Loups, Grenoble, France
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11
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Plassche GC, Fortney TA, Morrissette C, Korzelius JF, Popkin CA. Fighting in professional ice hockey: it's time for a change. PHYSICIAN SPORTSMED 2023; 51:405-413. [PMID: 35549610 DOI: 10.1080/00913847.2022.2078170] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/30/2022] [Accepted: 05/05/2022] [Indexed: 10/18/2022]
Abstract
Ice hockey has long been defined by a level of violence not seen in other sports. The rough-and-tough vigilante nature of the game was often employed as a method of enticing fans. Play in the National Hockey League (NHL) evolved throughout the 20th century as the rules governing it did. The nuances of what was allowed on the ice was slowly defined, but the league always fell short of an outright ban on fighting. Notably, the NHL allows fighting while international and Olympic leagues do not. Proponents of fighting's continued presence in the NHL argue that it can attract fans, facilitate momentum changes, help win games, and allows for social regulation on the ice. However, analyses of these theories have found little definitive evidence, calling the utility of fighting into question. The economics of fighting in hockey reveal high salary payouts, increased cost of injury, and a lack of correlation with ticket sales. Additionally, there is a concern for concussions sustained during fighting which has the potential for long term, detrimental mental health effects for athletes. In this analysis, we explore the history and evolution of fighting in the NHL, as well as the reasons behind its continued presence in the game, the risks associated with fighting, and the economics behind it all. Based upon these bodies of evidence, we make a proposal regarding the future of fighting in the NHL.
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Affiliation(s)
- Grace C Plassche
- Center for Shoulder, Elbow and Sports Medicine, Department of Orthopedic Surgery, New York Presbyterian/Columbia University Irving Medical Center, New York, USA
| | - Thomas A Fortney
- Center for Shoulder, Elbow and Sports Medicine, Department of Orthopedic Surgery, New York Presbyterian/Columbia University Irving Medical Center, New York, USA
| | - Cole Morrissette
- Center for Shoulder, Elbow and Sports Medicine, Department of Orthopedic Surgery, New York Presbyterian/Columbia University Irving Medical Center, New York, USA
| | - John F Korzelius
- Center for Shoulder, Elbow and Sports Medicine, Department of Orthopedic Surgery, New York Presbyterian/Columbia University Irving Medical Center, New York, USA
| | - Charles A Popkin
- Center for Shoulder, Elbow and Sports Medicine, Department of Orthopedic Surgery, New York Presbyterian/Columbia University Irving Medical Center, New York, USA
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Desai SS, Wong TT, Crockatt WK, Tedesco LJ, Trofa DP, Popkin CA. The 'Bauer bump:' ice hockey skates as a common cause of Haglund syndrome. PHYSICIAN SPORTSMED 2023; 51:414-419. [PMID: 35583477 DOI: 10.1080/00913847.2022.2079962] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/08/2021] [Accepted: 05/16/2022] [Indexed: 10/18/2022]
Abstract
Ice hockey is a fast-paced contact sport with a high rate of injury. While many of the injuries are acute and related to high skating speeds, frequent collisions, and sharp skates, the clinician must also be aware of the chronic injuries that commonly arise from playing this sport. The "Bauer bump" is one such chronic injury, which is the onset of Haglund syndrome in ice hockey players occurring in the context of wearing ice hockey skates. With this condition, players notice a bony enlargement of their posterosuperior calcaneus with or without the accompanying symptoms of retrocalcaneal bursitis and insertional Achilles tendinopathy. It is important for clinicians to understand the nature of Haglund syndrome in hockey players so that it can be appropriately diagnosed, managed, and ultimately, prevented.
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Affiliation(s)
- Sohil S Desai
- Center for Shoulder, Elbow and Sports Medicine, Columbia University Medical Center, NY, NY, USA
| | - Tony T Wong
- Department of Musculoskeletal Radiology, Columbia University Medical Center, NY, NY, USA
| | - William K Crockatt
- Center for Shoulder, Elbow and Sports Medicine, Columbia University Medical Center, NY, NY, USA
| | - Liana J Tedesco
- Center for Shoulder, Elbow and Sports Medicine, Columbia University Medical Center, NY, NY, USA
| | - David P Trofa
- Center for Shoulder, Elbow and Sports Medicine, Columbia University Medical Center, NY, NY, USA
| | - Charles A Popkin
- Center for Shoulder, Elbow and Sports Medicine, Columbia University Medical Center, NY, NY, USA
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13
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Ehlen QT, Costello JP, Wagner JD, Cohen JL, Baker LC, Rizzo MG, Kaplan LD. The Effects of Modified Game Schedules on Injury Rates in the National Hockey League (NHL). Cureus 2023; 15:e46898. [PMID: 37841980 PMCID: PMC10569235 DOI: 10.7759/cureus.46898] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/12/2023] [Indexed: 10/17/2023] Open
Abstract
Background Due to the COVID-19 pandemic, many professional sports leagues such as the National Hockey League (NHL) made significant changes to their schedules and operating procedures. Changes included a modified 2019-2020 playoff format, the removal of the 2020-2021 preseason, and condensed game schedules. Though these modifications were made in an effort to protect players from COVID-19, they resulted in decreased training time and preparation. The purpose of this study was to assess the impact of these changes on the rate of player injuries in the NHL both after the resumption of the midseason stoppage and during the subsequent seasons. Hypothesis/purpose Changes to the NHL schedule amid the COVID-19 pandemic resulted in a significant increase in player injury rates. Methods NHL injuries were obtained from an NHL injury database for the 2018-2019 through the 2021-2022 seasons. The date of injury, date of return, injury description, player age, and player position were recorded. Injury rates were calculated as the number of total athlete injuries per 1000 game exposures (GEs). The primary outcome was the injury proportion ratio (IPR) when comparing the injury rates of the post-COVID-19 season with baseline seasons. Secondary measures analyzed injuries based on age, anatomic location, month in the season, position, length of injury, season-ending injuries, and recurring injuries. Results A total of 4604 injuries were recorded between 2018 and 2022. The modified 2019-2020 playoffs had significantly higher rates of injury (IPR = 1.84, 95% confidence interval {CI} = 1.36-2.49) with more game exposures per week. The 2020-2021 season had significantly higher rates of overall player injury compared to baseline seasons (IPR = 1.19, 95% CI = 1.09-1.30) and also had a higher rate of season-ending injuries (IPR = 1.71, 95% CI = 1.38-2.11). Most injuries occurred in the first few months of the 2020-2021 season. There was no significant difference in injury rate based on age group and no significant difference in the average length of injury between seasons. Conclusion Increases in injury rates could be due to decreased offseason training between seasons, the elimination of preseason games, and increased game density. Decreasing typical training timelines and eliminating the preseason to rapidly return to normal competition after unexpected events (pandemics, lockdowns, etc.) may pose a risk to player safety in the NHL. These findings should be considered before future schedule changes in professional hockey.
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Affiliation(s)
- Quinn T Ehlen
- Orthopedics, University of Miami Miller School of Medicine, Miami, USA
| | - Joseph P Costello
- Orthopedics, University of Miami Miller School of Medicine, Miami, USA
| | - Jaxon D Wagner
- Orthopedics, University of Miami Miller School of Medicine, Miami, USA
| | - Jacob L Cohen
- Orthopedics, University of Miami Miller School of Medicine, Jackson Memorial Hospital, Miami, USA
| | - Lauren C Baker
- Orthopedics, University of Miami Miller School of Medicine, Jackson Memorial Hospital, Miami, USA
| | - Michael G Rizzo
- Orthopedic Surgery, University of Miami Miller School of Medicine, Jackson Memorial Hospital, Miami, USA
| | - Lee D Kaplan
- Sports Medicine, University of Miami, Miami, USA
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14
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Nguyen M, Bixby S, Yen YM, Miller P, Stracciolini A. Moderate and High Sport Specialization Level in Ice Hockey Athletes Is Associated With Symptomatic Cam Deformity. Sports Health 2023; 15:753-759. [PMID: 36164266 PMCID: PMC10467478 DOI: 10.1177/19417381221123528] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
BACKGROUND There is a known association between ice hockey and cam deformity in growing athletes. Similarly, the association between sport specialization and overuse injury in youth athletes has been well established. Limited research exists examining the relationship between cam deformity and sport specialization. HYPOTHESIS/PURPOSE Our hypothesis was that there would be a positive association with cam deformity and sport specialization category. STUDY DESIGN Retrospective chart review and cross-sectional questionnaire study. LEVEL OF EVIDENCE Level 4. METHODS Study participants included athletes aged 15 to 25 years with symptomatic femoroacetabular impingement (FAI) and considered ice hockey as their primary sport. All participants had completed Dunn lateral radiographs or hip magnetic resonance imaging as part of their clinical evaluation. All participants completed a survey regarding sport specialization level. Multivariable linear regression analysis controlling for sex was used to analyze the association between degree of sport specialization, age of sport specialization, position played, and level played. Comparisons in radiographic parameters across ice hockey groups were conducted using Student t tests and chi-square tests. RESULTS Sixty-six ice hockey participants made up the cohort. The majority reported high sport specialization (41/66, 62%). The mean age of sport specialization was 10.7 years (SD 3.5). Participants with moderate specialization had 25 times the odds of a cam deformity (odds ratio [OR] 25.2; 95% CI 1.5-410.7; P = 0.02) and those with high specialization had 9 times the odds of cam deformity (OR 9.3; 95% CI 1.2-74.2; P = 0.04) compared with those with a low degree of specialization, controlling for patient sex. No association was detected between the age of specialization and the likelihood of cam deformity when controlling for patient sex. CONCLUSION Level of sport specialization was associated with a cam deformity in this cohort of youth ice hockey athletes. CLINICAL RELEVANCE This study suggests that an association exists.
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Affiliation(s)
- Mindy Nguyen
- Department of Orthopedics, Beth Israel Deaconess Medical Center, Boston, MA
- Harvard Medical School, Boston, MA
| | - Sarah Bixby
- Department of Radiology, Boston Children’s Hospital, Boston, MA
| | - Yi-Meng Yen
- Division of Sports Medicine, Department of Orthopaedics, Boston Children’s Hospital, Boston, MA
- Harvard Medical School, Boston, MA
- The Micheli Center for Sports Injury Prevention, Waltham, MA
| | - Patricia Miller
- Division of Sports Medicine, Department of Orthopaedics, Boston Children’s Hospital, Boston, MA
| | - Andrea Stracciolini
- Division of Sports Medicine, Department of Orthopaedics, Boston Children’s Hospital, Boston, MA
- Department of Medicine, Division of Emergency Medicine, Boston Children’s Hospital, Boston, MA
- Harvard Medical School, Boston, MA
- The Micheli Center for Sports Injury Prevention, Waltham, MA
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15
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Suits WH, O'Neil MM, Fogarty KJ. Acute Effects of Ice Hockey on Hip Range of Motion, Strength, and Pelvic Tilt in Competitive Male Players. Sports Health 2023:19417381231190649. [PMID: 37565469 DOI: 10.1177/19417381231190649] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/12/2023] Open
Abstract
BACKGROUND Ice hockey players are at high risk for hip and groin injury. Several risk factors have been identified or proposed, including lower hip rotation range of motion (ROM), lower hip adductor strength, lower ratio of hip adductor to abductor strength, and lower pelvic tilt angle. It is not known how these risk factors change acutely with ice hockey participation. HYPOTHESIS Acute exposure to ice hockey will result in a reduction in ROM, strength, and pelvic tilt angle in competitive male players. STUDY DESIGN Controlled cohort study. LEVEL OF EVIDENCE Level 3. METHODS Risk factors for hip and groin injury, including isometric hip adductor strength at 0° of flexion, the ratio of hip adductor to abductor strength, total hip rotation passive ROM in supine, and the resting pelvic tilt angle, were assessed immediately before, immediately after, and 24 hours after an ice hockey exposure in 42 competitive male ice hockey players. Rating of perceived exertion (RPE) was collected to identify the intensity of the exposure. RESULTS There was a significant decrease in total hip rotation ROM (-7.32°, P < 0.01 (-3.91, -10.70)) and hip adductor strength (-4.41 kg, P < 0.01 (-2.81, -6.00) immediately after the exposure, and a significant decrease in total hip rotation ROM (-18.54°, P < 0.01 (-14.35, -22.73)), hip adductor strength (-6.56 kg, P < 0.01 (-4.58, -8.61)), and the ratio of hip adductor to abductor strength (-0.12, P < 0.01 (-0.21, -0.45)) 24 hours after. There was no significant change in pelvic tilt found in this study immediately after or 24 hours after. There was a moderate relationship between changes in hip adductor strength and changes in the ratio of hip adductor to abductor strength (r = 0.433, P < 0.01). RPE was not significantly correlated to any of the changes observed. CONCLUSION Risk factors for hip and groin injury in ice hockey players are modifiable after a single ice hockey exposure. CLINICAL RELEVANCE The identified fluctuation of injury risk factors for hip and groin injury in ice hockey players has implications for injury risk profiling, rehabilitation, and return-to-competition decision-making.
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Affiliation(s)
- William H Suits
- Department of Physical Therapy, University of Michigan-Flint, Flint, Michigan
- College of Health and Human Services, Western Michigan University, Kalamazoo, Michigan
| | - Margaret M O'Neil
- Department of Physical Therapy, University of Michigan-Flint, Flint, Michigan
| | - Kieran J Fogarty
- College of Health and Human Services, Western Michigan University, Kalamazoo, Michigan
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16
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Rumeau V, Grospretre S, Babault N. Post-Activation Performance Enhancement and Motor Imagery Are Efficient to Emphasize the Effects of a Standardized Warm-Up on Sprint-Running Performances. Sports (Basel) 2023; 11:sports11050108. [PMID: 37234064 DOI: 10.3390/sports11050108] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2023] [Revised: 05/18/2023] [Accepted: 05/20/2023] [Indexed: 05/27/2023] Open
Abstract
Warm-up routines include various tasks focused on the peripheral contractile properties and nervous motor command. This present study was aimed at investigating the acute effects of different warm-up routines, emphasizing either peripheral (post-activation performance enhancement, PAPE) or central (motor imagery, MI) contributions on sport-specific tasks. Eleven young female athletes took part in this cross-over, randomized, controlled trial. They underwent three experimental sessions composed of a standardized warm-up followed by 10 min of (1) rest (CONTROL), (2) maximal concentric leg press (PAPE), or (3) mental repetitions of sprint tasks (MI). Post-tests consisted of reaction time, arrowhead agility test, 20 m sprint, repeated sprint ability, and NASA-TLX fatigue questionnaire. PAPE and MI significantly enhanced the arrowhead agility test (p < 0.001 and p = 0.012, respectively) and repeated sprint ability (p = 0.002 and p = 0.035, respectively) compared to CONTROL, without any difference between PAPE and MI. The 20 m sprint time was better after PAPE as compared to MI (p = 0.005) and CONTROL (p < 0.001), without any difference between MI and CONTROL. Reaction time and the NASA-TLX questionnaire were not affected by the warm-up modalities (p > 0.05). PAPE was the most efficient to optimize warm-up due to its greater peripheral contribution that would improve muscle contractility. MI specifically improved the imagined tasks mostly by central contribution.
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Affiliation(s)
- Valentin Rumeau
- INSERM UMR1093-CAPS, Université de Bourgogne, UFR des Sciences du Sport, F-21000 Dijon, France
| | - Sidney Grospretre
- EA4660-C3S, Université de Franche-Comté, UFR des Sciences du Sport, F-25000 Besançon, France
| | - Nicolas Babault
- INSERM UMR1093-CAPS, Université de Bourgogne, UFR des Sciences du Sport, F-21000 Dijon, France
- Centre d'Expertise de la Performance, Université de Bourgogne, UFR des Sciences du Sport, F-21000 Dijon, France
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17
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Lenze L, Zibung M, Zuber C, Stegmann P, Conzelmann A. International performance level in adult ice hockey: The role of the talent environment in youth. J Sports Sci 2023; 41:100-111. [PMID: 37068217 DOI: 10.1080/02640414.2023.2196115] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/19/2023]
Abstract
Despite a growing interest in conducive talent development environments (TDE), the relationship between TDEs and the performance level in adulthood remains unclear. Therefore, this study examined the relationship of the micro-environment of former Swiss junior national team ice hockey players with their performance level in adulthood. With quantitative, retrospective data from n = 106 players born between 1984 and 1994, patterns of four factors club, family, peer, and school were built for early (13-15 years old) and late (16-19 years old) youth. The results revealed four structurally and mainly individually stable clusters for both developmental stages in youth. The cluster of the moderately above-average supported players between 16-19 years old demonstrated above-average values in all factors of the micro-environment and are more likely to reach international playing level in adulthood, whereas the structurally weak supported players are linked to a later regional playing level. These results indicate that simultaneous support across all four factors of the micro-environment in youth (club, family, peers, and school) is important to reach an international playing level, while low support in one or more area reduces the chance thereof. Thus, creating supportive environments across the board should be considered for a successful talent development.
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Affiliation(s)
- Lars Lenze
- Institute of Sport Science, University of Bern, Bern, Switzerland
- SC Bern Eishockey AG, Bern, Switzerland
| | - Marc Zibung
- Institute of Sport Science, University of Bern, Bern, Switzerland
| | - Claudia Zuber
- Institute of Sport Science, University of Bern, Bern, Switzerland
| | - Pascal Stegmann
- Institute of Sport Science, University of Bern, Bern, Switzerland
- Marketing & Sport Management, University of Bayreuth, Bayreuth, Germany
| | - Achim Conzelmann
- Institute of Sport Science, University of Bern, Bern, Switzerland
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18
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Lemoyne J, Trudeau F, Grondin S. The Relative Age Effect in Ice Hockey: Analysis of Its Presence, Its Fading and of a Reversal Effect among Junior and Professional Leagues. J Hum Kinet 2023; 87:119-131. [PMID: 37229406 PMCID: PMC10203842 DOI: 10.5114/jhk/161573] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2022] [Accepted: 09/01/2022] [Indexed: 05/27/2023] Open
Abstract
This study analyzes the relative age effect (RAE) among the world's best junior hockey leagues and in the NHL. Despite the prevalence of RAE in ice hockey, past research suggests its fading-reversal over time, which may occur at later stages of athletic development. The hypothesis of the RAE reversal was tested with two sources of raw data files from the 2021-2022 season: 15 of the best international junior and minor professional leagues (N = 7 399) and the NHL (N = 812). Birth quartile distributions were analyzed to verify the prevalence of RAE and quantile regression was used to test the reversal of RAE hypotheses. Advanced hockey metrics were aggregated from multiple data sources and used to compare early born with late born players using birth quartiles. Prevalence of the RAE was verified with crosstabs analyses and quantile regression was used to test the reversal effect. Results indicated that the RAE still prevailed in ice hockey, with higher magnitude in Canadian leagues. Regression analyses showed that late-born junior and minor pro players, despite getting less exposure in terms of games played, attained levels of offensive production similar to those of early born players. Late-born players able to emerge in the NHL performed similarly and sometimes displayed better performance (in some markers). Results suggest that stakeholders should find ways to pay special attention to late born players in talent identification processes and offer them opportunities to develop at the highest levels.
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Affiliation(s)
- Jean Lemoyne
- Department of Human Kinetics, Université du Québec à Trois-Rivières, Trois-Rivières, Canada
- Groupe Interdisciplinaire de Recherche Appliquée en Santé (GIRAS), Université du Québec à Trois-Rivières, Trois-Rivières, Canada
- Laboratoire de Recherche sur le Hockey, Université du Québec à Trois-Rivières, Trois-Rivières, Canada
| | - François Trudeau
- Department of Human Kinetics, Université du Québec à Trois-Rivières, Trois-Rivières, Canada
- Groupe Interdisciplinaire de Recherche Appliquée en Santé (GIRAS), Université du Québec à Trois-Rivières, Trois-Rivières, Canada
- Laboratoire de Recherche sur le Hockey, Université du Québec à Trois-Rivières, Trois-Rivières, Canada
| | - Simon Grondin
- School of Psychology, Université Laval, Quebec City, Canada
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19
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Forlizzi JM, Ward MB, Whalen J, Wuerz TH, Gill TJ. Core Muscle Injury: Evaluation and Treatment in the Athlete. Am J Sports Med 2023; 51:1087-1095. [PMID: 35234538 DOI: 10.1177/03635465211063890] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
BACKGROUND Pain in the groin region, where the abdominal musculature attaches to the pubis, is referred to as a "sports hernia,""athletic pubalgia," or "core muscle injury" and has become a topic of increased interest due to its challenging diagnosis. Identifying the cause of chronic groin pain is complicated because significant symptom overlap exists between disorders of the proximal thigh musculature, intra-articular hip pathology, and disorders of the abdominal musculature. PURPOSE To present a comprehensive review of the pathoanatomic features, history and physical examination, and imaging modalities used to make the diagnosis of core muscle injury. STUDY DESIGN Narrative and literature review; Level of evidence, 4. METHODS A comprehensive literature search was performed. Studies involving the diagnosis, treatment, and rehabilitation of athletes with core muscle injury were identified. In addition, the senior author's extensive experience with the care of professional, collegiate, and elite athletes was analyzed and compared with established treatment algorithms. RESULTS The differential diagnosis of groin pain in the athlete should include core muscle injury with or without adductor longus tendinopathy. Current scientific evidence is lacking in this field; however, consensus regarding terms and treatment algorithms was facilitated with the publication of the Doha agreement in 2015. Pain localized proximal to the inguinal ligament, especially in conjunction with tenderness at the rectus abdominis insertion, is highly suggestive of core muscle injury. Concomitant adductor longus tendinopathy is not uncommon in these athletes and should be investigated. The diagnosis of core muscle injury is a clinical one, although dynamic ultrasonography is becoming increasingly used as a diagnostic modality. Magnetic resonance imaging is not always diagnostic and may underestimate the true extent of a core muscle injury. Functional rehabilitation programs can often return athletes to the same level of play. If an athlete has been diagnosed with athletic pubalgia and has persistent symptoms despite 12 weeks of nonoperative treatment, a surgical repair using mesh and a relaxing myotomy of the conjoined tendon should be considered. The most common intraoperative finding is a deficient posterior wall of the inguinal canal with injury to the distal rectus abdominis. Return to play after surgery for an isolated sports hernia is typically allowed at 4 weeks; however, if an adductor release is performed as well, return to play occurs at 12 weeks. CONCLUSION Core muscle injury is a diagnosis that requires a high level of clinical suspicion and should be considered in any athlete with pain in the inguinal region. Concurrent adductor pathology is not uncommon.
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Affiliation(s)
| | - Mark B Ward
- New England Baptist Hospital, Boston, Massachusetts, USA
| | - James Whalen
- New England Patriots, Foxboro, Massachusetts, USA
| | - Thomas H Wuerz
- New England Baptist Hospital, Boston, Massachusetts, USA
| | - Thomas J Gill
- New England Baptist Hospital, Boston, Massachusetts, USA
- St Elizabeth's Medical Center, Brighton, Massachusetts, USA
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20
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Yang P, Zhang J, Xue J, Bai Y, Yang H, Zhang R, He B. Time domain adaptation of left ventricular diastolic intraventricular pressure in elite female ice hockey athletes. Front Cardiovasc Med 2023; 10:1057129. [PMID: 36865888 PMCID: PMC9971929 DOI: 10.3389/fcvm.2023.1057129] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2022] [Accepted: 01/30/2023] [Indexed: 02/16/2023] Open
Abstract
Background Ice hockey is a high-intensity dynamic sport for which competitive athletes train for longer than 20 hours each week for several years. The cumulative time of myocardial exposure to hemodynamic stress affects cardiac remodeling. However, the intracardiac pressure distribution of the elite ice hockey athletes' heart during adaptation to long-term training remains to be explored. This study aimed to compare the diastolic intraventricular pressure difference (IVPD) of the left ventricle (LV) between healthy volunteers and ice hockey athletes with different training times. Methods Fifty-three female ice hockey athletes (27 elite and 26 casual) and 24 healthy controls were included. The diastolic IVPD of the LV during diastole was measured by vector flow mapping. The peak amplitude of the IVPD during isovolumic relaxation (P0), diastolic rapid filling (P1), and atrial systole (P4); the difference in the peak amplitude between adjacent phases (DiffP01, DiffP14); the time interval between the peak amplitude of adjacent phases (P0P1, P1P4); and the maximum decrease rate in diastolic IVPD were calculated. Differences between groups, as well as correlations between hemodynamic parameters and training time, were analyzed. Results Structural parameters of the LV were significantly higher in elite athletes than in casual players and controls. No significant difference in the peak amplitude of the IVPD during the diastolic phase was found among the three groups. The analysis of covariance with heart rate as a covariate showed that P1P4 in the elite athlete and casual player groups was significantly longer than that in the healthy control group (p < 0.001 for all). An increased P1P4 was significantly associated with an increased training year (β = 4.90, p < 0.001). Conclusions The diastolic cardiac hemodynamics of the LV in elite female ice hockey athletes could be characterized by a prolonged diastolic IVPD, and P1P4 prolonged with an increase in the training years, reflecting a time-domain adaptation in diastolic hemodynamics after long-term training.
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Affiliation(s)
- Ping Yang
- Postdoctoral Mobile Station of Sports Science, Chengdu Sport University, Chengdu, Sichuan, China
| | - Jianmei Zhang
- Institute of Sports Medicine, General Administration of Sport of China, Beijing, China
| | - Jun Xue
- National Emergency Medical Research Center, Emergency General Hospital, Beijing, China
| | - Yunfei Bai
- Institute of Sports Medicine, General Administration of Sport of China, Beijing, China
| | - Hui Yang
- Department of Physical Education, Jiangxi Science and Technology Normal University, Nanchang, Jiangxi, China
| | - Ruiping Zhang
- Institute of Sports Medicine, General Administration of Sport of China, Beijing, China
| | - Benxiang He
- Postdoctoral Mobile Station of Sports Science, Chengdu Sport University, Chengdu, Sichuan, China,*Correspondence: Benxiang He ✉
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21
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van den Tillaar R, Pojskic H, Andersson H. Sprint skating profile of competitive female bandy players: An analysis of positional and playing-level differences. Front Physiol 2023; 14:1094170. [PMID: 36760527 PMCID: PMC9906948 DOI: 10.3389/fphys.2023.1094170] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2022] [Accepted: 01/11/2023] [Indexed: 01/26/2023] Open
Abstract
There is no research examining female bandy players, which creates a gap of knowledge of female skating performance and its determinants with male skating performance, not only in bandy but also in exercise science in general. Therefore, the aim of this explorative study was to investigate position and playing-level differences in the sprint skating performance and anthropometrics of 74 elite female bandy players (age: 18.9 ± 4.1 years; height: 1.67 ± 0.06 m; body mass: 63.2 ± 7.4 kg). Participants were categorised according to playing level (26 elite and 48 junior elite players) and position (22 defenders, 35 midfielders, and 17 forwards). They were tested on their anthropometric characteristics and sprint linear skating profile over 80 m with the split times measured at 10, 20, 40, 50, 60, 70, and 80 m to calculate the average velocities between these different 10 m intervals. Results revealed that elite players had more training experience, were heavier, could accelerate faster, and reached a higher maximal velocity than the junior elite players (9.52 ± 0.37 vs 8.84 ± 0.40 m/s, respectively). In general, defenders were heavier than forwards, and the elite forwards accelerated faster in the first 10 m than the midfielders (p = 0.041). In summary, playing level and position, body mass, and training experience modulated skating sprint performance. The findings suggest that female junior-level players should spend more time developing skating sprint and acceleration abilities to meet the specific demands of playing at the elite level. Moreover, the coaches and professionals who work with female bandy players should be aware that the development of acceleration ability is more important for forwards.
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Affiliation(s)
- Roland van den Tillaar
- Department of Sports Sciences, Nord University, Levanger, Norway,*Correspondence: Roland van den Tillaar,
| | - Haris Pojskic
- Department of Sports Science, Linnaeus University, Kalmar, Sweden
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22
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Lindblad N, Hänninen T, Valtonen M, Heinonen OJ, Waris M, Ruuskanen O. Influenza A Outbreaks in Two Professional Ice Hockey Teams during COVID-19 Epidemic. Viruses 2022; 14:v14122730. [PMID: 36560734 PMCID: PMC9782561 DOI: 10.3390/v14122730] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2022] [Revised: 12/01/2022] [Accepted: 12/02/2022] [Indexed: 12/12/2022] Open
Abstract
Influenza A outbreaks occurred in two professional hockey teams just after two games they played against each other. Thirteen players and two staff members fell ill during 17-20 April 2022, while COVID-19 was prevalent. Altogether, seven players missed an important game due to influenza. The rapid diagnosis permitted effective pharmaceutical and nonpharmaceutical control of the outbreaks.
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Affiliation(s)
- Niklas Lindblad
- Unit for Health and Physical Activity, Paavo Nurmi Centre, University of Turku, 20520 Turku, Finland
| | - Timo Hänninen
- Tampere Research Centre of Sports Medicine, UKK Institute for Health Promotion Research, 33500 Tampere, Finland
| | - Maarit Valtonen
- Finnish Institute of High Performance KIHU, 40700 Jyväskylä, Finland
| | - Olli J. Heinonen
- Unit for Health and Physical Activity, Paavo Nurmi Centre, University of Turku, 20520 Turku, Finland
| | - Matti Waris
- Institute of Biomedicine, University of Turku, 20520 Turku, Finland
- Department of Clinical Microbiology, Turku University Hospital, 20521 Turku, Finland
| | - Olli Ruuskanen
- Department of Paediatrics and Adolescent Medicine, Turku University Hospital, 20521 Turku, Finland
- Correspondence: ; Tel.: +358-40-7486250
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Barrow AE, Charles SJC, Issa M, Rai AA, Hughes JD, Lesniak BP, Rodosky MW, Popchak A, Lin A. Distance to Dislocation and Recurrent Shoulder Dislocation After Arthroscopic Bankart Repair: Rethinking the Glenoid Track Concept. Am J Sports Med 2022; 50:3875-3880. [PMID: 36472485 DOI: 10.1177/03635465221128913] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
BACKGROUND The "distance to dislocation" (DTD) calculation has been proposed as 1 method to predict the risk of recurrent dislocation after arthroscopic Bankart repair for an "on-track" shoulder. Rates of recurrent dislocation at specific DTD values are unknown. HYPOTHESIS Among patients with "on-track" shoulder lesions who underwent primary arthroscopic Bankart repair, the rate of recurrent dislocation would increase as DTD values decrease. STUDY DESIGN Case-control study; Level of evidence, 3. METHODS We performed a retrospective analysis of 188 patients with "on-track" shoulder lesions who underwent primary arthroscopic anterior labral repair between 2007 and 2019, with a minimum 2-year follow-up. Glenoid bone loss, Hill-Sachs interval, glenoid track, and DTD were determined from preoperative magnetic resonance imaging scans. The rate of recurrent dislocation was determined at 2-mm DTD intervals. Univariate and multivariate regression analyses were used to evaluate the relationship between recurrent dislocation, patient characteristics, and bone loss variables. A multivariate regression model was created to predict the probability of failure at continuous DTD values. A subgroup analysis of failure rate based on collision sports participation was also performed. RESULTS A total of 29 patients (15.4%) sustained recurrent dislocations. Patient age (P = .046), multiple dislocations (P = .03), glenoid bone loss (P < .001), Hill-Sachs interval length (P < .001), and DTD (P < .001) were all independent predictors of failure. As the DTD decreased, the rate of recurrent dislocation increased. Below a DTD threshold of 10 mm, the recurrent dislocation rate increased exponentially. Up to a threshold of 24 mm, the failure rate for collision athletes remained >12.3%, independent of the DTD. Conversely, the failure rate among noncollision athletes decreased steadily as the DTD increased. CONCLUSION For "on-track" shoulder lesions, as the DTD approached 0 mm ("off-track" threshold), the risk of recurrent dislocation after arthroscopic Bankart repair increased significantly. Below a DTD threshold of 10 mm, the risk of failure increased exponentially. The risk of recurrent dislocation for collision sports athletes remained elevated at higher DTD values than for noncollision athletes.
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Affiliation(s)
- Aaron E Barrow
- UPMC Center for Sports Medicine, 3200 South Water Street, Pittsburgh, Pennsylvania, USA
| | - Shaquille J-C Charles
- UPMC Center for Sports Medicine, 3200 South Water Street, Pittsburgh, Pennsylvania, USA
| | - Mohamad Issa
- American University of Beirut Medical Center, Beirut, Lebanon
| | - Ajinkya A Rai
- UPMC Center for Sports Medicine, 3200 South Water Street, Pittsburgh, Pennsylvania, USA
| | - Jonathan D Hughes
- UPMC Center for Sports Medicine, 3200 South Water Street, Pittsburgh, Pennsylvania, USA.,Pittsburgh Shoulder Institute, Pittsburgh, Pennsylvania, USA
| | - Bryson P Lesniak
- UPMC Center for Sports Medicine, 3200 South Water Street, Pittsburgh, Pennsylvania, USA.,Pittsburgh Shoulder Institute, Pittsburgh, Pennsylvania, USA
| | - Mark W Rodosky
- UPMC Center for Sports Medicine, 3200 South Water Street, Pittsburgh, Pennsylvania, USA.,Pittsburgh Shoulder Institute, Pittsburgh, Pennsylvania, USA
| | - Adam Popchak
- UPMC Center for Sports Medicine, 3200 South Water Street, Pittsburgh, Pennsylvania, USA.,Pittsburgh Shoulder Institute, Pittsburgh, Pennsylvania, USA
| | - Albert Lin
- UPMC Center for Sports Medicine, 3200 South Water Street, Pittsburgh, Pennsylvania, USA.,Pittsburgh Shoulder Institute, Pittsburgh, Pennsylvania, USA
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Nordstrøm A, Bahr R, Bache-Mathiesen LK, Clarsen B, Talsnes O. Association of Training and Game Loads to Injury Risk in Junior Male Elite Ice Hockey Players: A Prospective Cohort Study. Orthop J Sports Med 2022; 10:23259671221129646. [PMID: 36338353 PMCID: PMC9629576 DOI: 10.1177/23259671221129646] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/13/2022] [Accepted: 07/24/2022] [Indexed: 01/24/2023] Open
Abstract
BACKGROUND Training and game loads are potential risk factors of injury in junior elite ice hockey, but the association of training and game loads to injuries is unknown. PURPOSE To investigate the association of chronic training and game loads to injury risk in junior male elite ice hockey players. STUDY DESIGN Cohort study; Level of evidence, 2. METHODS In this prospective cohort study, we monitored all health problems among 159 male junior ice hockey players (mean age, 16 years; range, 15-19 years) at sports-specific high schools during the 2018-2019 school year. Players reported their health problems every week using the Oslo Sports Trauma Research Center Overuse Questionnaire on Health Problems (OSTRC-H2). The number of training sessions and games was reported for 33 weeks. We calculated the previous 2-week difference in training/game loads as well as the cumulative training/game loads of the previous 2, 3, 4, and 6 weeks and explored potential associations between training/game loads and injury risk using mixed-effects logistic regression. RESULTS The players reported 133 acute injuries, 75 overuse injuries, and 162 illnesses in total, and an average of 8.8 (SD ±3.9) training sessions and 0.9 (SD ± 1.1) games per week. We found no association between the difference of the two previous weeks or the previous 2- 3- and 4-week cumulative, training or game load and acute injuries, nor the difference of the two previous weeks, or the previous 4- and 6-week cumulative, training or game load and overuse injuries (OR, ∼1.0; P > .05 in all models). CONCLUSION In the current study of junior elite ice hockey players, there was no evidence of an association between cumulative exposure to training/game loads and injury risk.
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Affiliation(s)
- Anine Nordstrøm
- Oslo Sports Trauma Research Center, Department of Sports Medicine, Norwegian School of Sports Sciences, Oslo, Norway.,Sykehuset Innlandet HF, Innlandet Hospital Trust, Elverum, Norway.,Anine Nordstrøm, MD, Oslo Sports Trauma Research Center, Department of Sports Medicine, Norwegian School of Sports Sciences, PB 4014 Ullevål Stadion 0806 Oslo, Norway ()
| | - Roald Bahr
- Oslo Sports Trauma Research Center, Department of Sports Medicine, Norwegian School of Sports Sciences, Oslo, Norway
| | - Lena K. Bache-Mathiesen
- Oslo Sports Trauma Research Center, Department of Sports Medicine, Norwegian School of Sports Sciences, Oslo, Norway
| | - Ben Clarsen
- Oslo Sports Trauma Research Center, Department of Sports Medicine, Norwegian School of Sports Sciences, Oslo, Norway.,Center for Disease Burden Norwegian Institute of Public Health, Bergen, Norway
| | - Ove Talsnes
- Sykehuset Innlandet HF, Innlandet Hospital Trust, Elverum, Norway.,Investigation performed at Oslo Sports Trauma Research Center, Department of Sports Medicine, Norwegian School of Sports Sciences, Oslo, Norway
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Morrissey PJ, Zhou JJ, Shah NV, Torre BB, Dekis JC, Newman JM, Connors KM, Urban WP. Epidemiology of female youth ice hockey injuries presenting to United States emergency departments from 2002 to 2019. PHYSICIAN SPORTSMED 2022; 50:388-393. [PMID: 34030578 DOI: 10.1080/00913847.2021.1932635] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
BACKGROUND This study documented injury types, rates and mechanisms for female youth ice hockey players reporting to US emergency departments to inform safety measures and sideline medical preparedness. METHODS The National Electronic Injury Surveillance System (NEISS) database was queried for ice hockey injuries (product code 1279) from 1 January 2002 to 31 December 2019. Incidence rate ratios (IRR) were calculated using OpenEpi and compared between age divisions. Spearman's rank correlation was utilized to evaluate the correlation between age and injury incidence. USA Hockey membership statistics were used to establish the population at risk and calculate incidence rates (IR). RESULTS An estimated 20,384 ice hockey injuries presented to participating United States emergency departments. The number of female youth ice hockey players increased significantly from 36,258 in 2002 to 65,072 in 2019 (p < 0.01). The most commonly injured body parts were the head (n = 5,519, IR = 62.1 [95%CI 54.3-70.0 per 10,000 athletes), trunk (n = 2,364, IR = 26.6 [95%CI 21.2-32.0] per 10,000 athletes), and wrist (n = 1,824, IR = 20.5 [95%CI 15.7-25.4] per 10,000 athletes). The most commonly reported mechanisms of injury were player-to-player collision (n = 4,746, IR = 53.4 [95%CI 46.4-60.5] per 10,000 athletes) and falls (n = 4,585, IR = 51.6 [95%CI 44.1-59.1] per 10,000 athletes). The most common diagnoses were traumatic brain injury (n = 5,333, IR = 60.0 [95%CI 52.3-67.8] per 10,000 athletes), contusion (n = 4,204, IR = 47.3 [95%CI 40.3-54.4] per 10,000 athletes) and strain/sprain (n = 3,601, IR = 40.5 [95%CI 34.1-47.0] per 10,000 athletes). A positive correlation was found between age and injury incidence, as well as increasing age and injuries from player-to-player collision and TBI's. CONCLUSIONS Though body checking is illegal at all levels of women's ice hockey, player-to-player collision prevailed as the leading mechanism on injury. Hopefully this study informs players, parents, coaches, trainers and clinicians about the impact of player-to-player collisions on overall injury burden in the older age divisions of youth female hockey.
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Affiliation(s)
- Patrick J Morrissey
- Department of Orthopaedic Surgery, Brown University Warren Alpert Medical School, Providence, RI, USA
| | - Jack J Zhou
- Department of Orthopaedic Surgery and Rehabilitation Medicine, State University of New York (SUNY) Downstate Medical Center, Brooklyn, New York, USA
| | - Neil V Shah
- Department of Orthopaedic Surgery and Rehabilitation Medicine, State University of New York (SUNY) Downstate Medical Center, Brooklyn, New York, USA
| | - Barrett B Torre
- Department of Orthopaedic Surgery and Rehabilitation Medicine, State University of New York (SUNY) Downstate Medical Center, Brooklyn, New York, USA
| | - Joanne C Dekis
- Department of Orthopaedic Surgery and Rehabilitation Medicine, State University of New York (SUNY) Downstate Medical Center, Brooklyn, New York, USA
| | - Jared M Newman
- Department of Orthopaedic Surgery and Rehabilitation Medicine, State University of New York (SUNY) Downstate Medical Center, Brooklyn, New York, USA
| | - Katherine M Connors
- Department of Orthopaedic Surgery and Rehabilitation Medicine, State University of New York (SUNY) Downstate Medical Center, Brooklyn, New York, USA
| | - William P Urban
- Department of Orthopaedic Surgery and Rehabilitation Medicine, State University of New York (SUNY) Downstate Medical Center, Brooklyn, New York, USA
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Singh BM, Galimova I, Singh TM. Double Major for Slashing: Management of Blunt Popliteal Fossa Trauma in Ice Hockey in the Setting of Popliteal Artery Entrapment Syndrome. Clin J Sport Med 2022; 32:e543-e545. [PMID: 34516434 PMCID: PMC9415213 DOI: 10.1097/jsm.0000000000000970] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/25/2021] [Accepted: 07/28/2021] [Indexed: 02/04/2023]
Abstract
ABSTRACT Popliteal artery entrapment syndrome (PAES) is a rare condition that produces calf claudication in young patients. It is most commonly a result of aberrant anatomy of the popliteal fossa. If undiagnosed, PAES can lead to acute ischemia and a threatened limb as a result of complete arterial occlusion or embolism. Ice hockey is a contact sport, and slashing on the covered legs is well described as a strategy and contact point. We present a unique case that highlights a blunt popliteal artery injury in a young player with an underlying type 2 PAES. We discuss the initial diagnosis and endovascular/vascular surgical treatment, followed by the delayed management of the popliteal artery injury. We also provide considerations for popliteal fossa blunt trauma and need for future protection of the popliteal fossa for athletes.
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Affiliation(s)
- Brij M. Singh
- Men's National Team Operations, 10th Brendan Burke Intern, USA Hockey, Plymouth, Michigan; and
| | - Irina Galimova
- Vascular Surgery, Palo Alto Medical Foundation, Mountain View, California
| | - Tej M. Singh
- Vascular Surgery, Palo Alto Medical Foundation, Mountain View, California
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27
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Popkin CA, Fortney TA, Padaki AS, Rogers AJ, Trofa DP, Lynch TS, Tuominen M, Stuart MJ. Injuries to Ice Hockey Referees and Linesmen: A Survey of International Ice Hockey Federation Officials. Orthop J Sports Med 2022; 10:23259671221117504. [PMID: 36105655 PMCID: PMC9465570 DOI: 10.1177/23259671221117504] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/12/2022] [Accepted: 05/17/2022] [Indexed: 11/15/2022] Open
Abstract
Background Ice hockey referees and linesmen are at risk for musculoskeletal injuries because of the lack of protective equipment and contact with players, sticks, pucks, the ice surface and boards. Purpose To quantify and analyze injuries reported by officials of the International Ice Hockey Federation (IIHF). Study Design Descriptive epidemiology study. Methods A 61-question survey tool was designed by an interdisciplinary team to evaluate musculoskeletal injuries experienced by ice hockey officials. This survey was administered to 600 active IIHF referees and linesmen. Only completed survey responses were included in the statistical analysis. Continuous variables were analyzed using unpaired t-tests, while categorical data were assessed utilizing chi-square tests. Results Of the 600 surveys administered, 264 surveys were completed by officials from 45 countries (44% response rate). Of the respondents, 72% were male, and 28% were female, with a mean age of 31.1 ± 5.8 years. Officiating experience averaged 11.4 ± 6.0 years (6.3 ± 4.5 years with the IIHF). A total of 295 injuries were reported by 55% of the officials. Injuries occurred more frequently during games compared with training, and officials who worked year-round had more total injuries than those who took time off (P = .03). The most common injuries involved the wrist and hand (n = 64 [22%]), head and face (n = 58 [20%]), and the knee (n = 47 [16%]). Wrist and hand trauma included 23 fractures. Knee and shoulder injuries were most likely to require surgery compared with other body areas (P < .001); 30 officials underwent surgery because of an acute knee injury (10%). Injury prevention activities were effective at reducing injuries (P = .04). Conclusion Most ice hockey officials experienced musculoskeletal injuries during their career. The risk of trauma to the wrist and hand can possibly be reduced via equipment modifications including protective gloves. A greater emphasis should be placed on injury prevention programs and time away from officiating competitions.
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Affiliation(s)
- Charles A Popkin
- Center for Shoulder, Elbow and Sports Medicine, Columbia University, New York, New York, USA
| | - Thomas A Fortney
- Center for Shoulder, Elbow and Sports Medicine, Columbia University, New York, New York, USA
| | - Ajay S Padaki
- University of California, San Francisco, San Francisco, California, USA
| | - Andrew J Rogers
- Newton-Wellesley Hospital, Massachusetts General Brigham, Newton, Massachusetts, USA
| | - David P Trofa
- Center for Shoulder, Elbow and Sports Medicine, Columbia University, New York, New York, USA
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Abstract
OBJECTIVE Young players experience pressure to focus on ice hockey at the exclusion of other sports in order to improve chances of success. Early specialization in other sports has been associated with increased injury without the benefit of improved success. The objective of the current study was to investigate whether earlier specialization results in increased injury without higher rates of career success. This study also aimed to compare rates of injury in athletes at various levels of competition. METHODS An original survey was issued to men's ice hockey players at the juniorA, collegiate, and professional levels. The survey consisted of 34 questions on various demographic, specialization, and injury variables. All participants were >18 years of age. RESULTS The survey was completed by 101 athletes. The mean age at specialization was 13 (±4) overall and 14 (±3), 13 (±4), and 11(±4) for professional, collegiate, and junior players, respectively. There was no difference in age at specialization between each group and professional players did not specialize earlier than the remainder of the cohort as a whole (p > 0.05). There was no significant correlation between age at specialization and total injuries (p > 0.05). There was no difference in concussions causing missed play time between groups (p > 0.05) but professional players had more overall concussions and underwent more surgeries due to hockey-related injuries (p = 0.01). CONCLUSIONS Specializing exclusively in ice hockey earlier in life was not associated with playing professionally. Both collegiate and professional players do not tend to specialize prior to age 12. Age at specialization was not associated with overall number of injuries. Professional players with longer careers appear to sustain more concussions and undergo more surgery.
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Affiliation(s)
- Keir A Ross
- Department of Orthopedic Surgery, New York University School of Medicine, New York, NY 10003, USA
| | - Jordan W Fried
- Department of Orthopedic Surgery, New York University School of Medicine, New York, NY 10003, USA
| | - David A Bloom
- Department of Orthopedic Surgery, New York University School of Medicine, New York, NY 10003, USA
| | - Guillem Gonzalez-Lomas
- Department of Orthopedic Surgery, New York University School of Medicine, New York, NY 10003, USA
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29
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Vermeulen TF, Boville SM, Gamble ASD, Bigg JL, McCarthy DG, Eskedjian GS, Spriet LL. Dietary Intake of Young Male Ice Hockey Players 10-13 Years of Age during a Week-Long Hockey Camp. Nutrients 2022; 14:2978. [PMID: 35889935 PMCID: PMC9320286 DOI: 10.3390/nu14142978] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2022] [Revised: 07/16/2022] [Accepted: 07/19/2022] [Indexed: 12/04/2022] Open
Abstract
This study recorded the dietary intakes of young male ice hockey players (10-13 year (yr)) for 3 consecutive days while participating in a 5-day summer hockey camp. Players were categorized as older children (OC, n = 10; 10.7 ± 0.2 yr; 37.1 ± 1.5 kg; 147.9 ± 2.1 cm) and young adolescents (YA, n = 10; 12.9 ± 0.1 yr; 45.2 ± 1.5 kg; 157.0 ± 2.4 cm). Players consumed their usual daily intakes. Parents recorded food intake in the mornings and evenings, while the researchers recorded food intake at camp. Energy intake was higher in both groups when compared to data for age-matched young Canadian (CDN) males (OC, 2967 ± 211 vs. 2000 kcal/day; YA, 2773 ± 91 vs. 2250 kcal/day). Carbohydrate (CHO) (OC, 11.2 ± 0.8 vs. YO, 8.9 ± 0.5 g/kg body mass/day) and protein (OC, 3.2 ± 0.3; YO, 2.4 ± 0.1 g/kg/day) intakes were higher than reported for young CDN males (CHO, 3.6 and protein, 1.0 g/kg/day) and were within the Acceptable Macronutrient Distribution Range (AMDR; CHO, 56 ± 2.3; 57.4 ± 0.8%; protein, 16.1 ± 1.0; 15.7 ± 0.7%). Fat intake was also within the AMDR in both groups (OC, 29.8 ± 1.6%; YA, 28.3 ± 1.0%). Micronutrient intake was adequate except for Vitamin D intakes that were below the recommended 15 ug/day at 6.3 ± 0.7 (OC) and 5.0 ± 1.5 ug/day (YA). In summary, energy and macronutrient intakes of the OC (10-11 yr) and YA (12-13 yr) players were high and well above the age matched CDN norms. The older children had higher energy intakes/kg body mass than the young adolescents. Higher energy intakes allowed for micronutrients intakes to be met in these young active males, except for vitamin D intake.
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Affiliation(s)
- Tyler F. Vermeulen
- Department of Human Health and Nutritional Sciences, University of Guelph, Guelph, ON N1G 2W1, Canada; (S.M.B.); (A.S.D.G.); (J.L.B.); (D.G.M.); (G.S.E.); (L.L.S.)
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30
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Olson ML, Schindler G. Hip Adduction and Abduction Strength Profiles Among Bantam, High School, Juniors, and Collegiate American Ice Hockey Players. Int J Sports Phys Ther 2022; 17:605-612. [PMID: 35693870 PMCID: PMC9159708 DOI: 10.26603/001c.34444] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2021] [Accepted: 02/18/2022] [Indexed: 11/18/2022] Open
Abstract
Background Adductor strains are the most common non-contact musculoskeletal injury sustained in ice hockey. Systematic reviews have determined higher level of play and lower hip adduction to abduction strength ratios to be associated with an increased risk of adductor strain across multiple sports. Limited research exists regarding hip adduction and abduction strength profiles across various levels of ice hockey players. Purpose To compare isometric hip adduction and abduction strength profiles among bantam, high school, tier one juniors, and NCAA Division I collegiate ice hockey players. A secondary purpose was to identify whether differences in strength profiles between dominant and non-dominant limbs exist. Study Design Cross-sectional cohort study. Methods A questionnaire of demographic data, hockey, and injury specific information was completed by all subjects. The mean of three reps of maximal hip isometric adduction and abduction strengths were quantified using a handheld dynamometer with external belt-fixation. Ratios of hip adduction-to-abduction strength were calculated and normalized for body weight. Results A total of 87 uninjured skaters were included in this study with a mean age of 17 years. Mean hip adductor-to-abductor ratios for Bantam hockey players were 121% followed by collegiate (115%), Juniors (111%), and high school (109%) hockey players. No statistically significant differences were found between peak hip adduction and abduction isometric strength and playing level. In addition, there was no difference between unilateral hip strength ratios and shooting hand or leg dominance. While 34.5% of subjects reported a history of adductor injury, no significant differences existed regarding strength ratios during bilateral comparison or when compared to their team norms. Three subjects were found to have unilateral ratios of less than 80%, while two subjects demonstrated bilateral ratios of less than 80%. Conclusions Symmetry is illustrated between dominant and non-dominant legs in ice hockey players with and without a history of adductor injury. Results align well with previously established cross-sectional data from Australian football, with ratios of 103% in high school players, 107% in semi-professional players, and 113% in collegiate players. Level of Evidence Level 3.
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Affiliation(s)
- Morgan L Olson
- Department of Sports Medicine, University of North Dakota
| | - Gary Schindler
- Department of Sports Medicine, University of North Dakota
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Huard Pelletier V, Lemoyne J. Early Sport Specialization and Relative Age Effect: Prevalence and Influence on Perceived Competence in Ice Hockey Players. Sports (Basel) 2022; 10:sports10040062. [PMID: 35447872 PMCID: PMC9028802 DOI: 10.3390/sports10040062] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2022] [Revised: 04/12/2022] [Accepted: 04/13/2022] [Indexed: 11/16/2022] Open
Abstract
The relative age effect (RAE) and early sport specialization (ESS) have been of growing interest in the sports world, especially in ice hockey, because of their potential adverse effects. However, little is known about their distribution within each level of play in Canadian minor ice hockey, or whether they influence young people’s perceived competence, a variable of interest in long-term sports development. A sample of elite adolescent players (N = 204) and a sample of recreational and competitive players (N = 404) were used to measure these constructs, and chi-square tabulations were conducted to compare their distribution. Our results reveal that RAE (χ2 = 20.03, p < 0.01, Cramer’s V = 0.13) and ESS (χ2 = 66.14, p < 0.001, Cramer’s V = 0.24) are present, but there are apparently no gender differences in their distributions. Neither the level of RAE nor ESS seems to affect the perceived competence of the players, regardless of gender. The results of this study highlight the presence of RAE and ESS in Canadian minor ice hockey, especially at the elite level, but indicate that they do not affect the self-perception of ice hockey players. Additional research on these concepts is needed to obtain a complete picture of their potential impact on sports development.
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Affiliation(s)
- Vincent Huard Pelletier
- Department of Human Kinetics, Université du Québec à Trois-Rivières, 3351 Boulevard des Forges, Trois-Rivières, QC G9A 5H7, Canada;
- Laboratoire de recherche sur le hockey UQTR, 3351 Boulevard des Forges, Trois-Rivières, QC G9A 5H7, Canada
- Correspondence:
| | - Jean Lemoyne
- Department of Human Kinetics, Université du Québec à Trois-Rivières, 3351 Boulevard des Forges, Trois-Rivières, QC G9A 5H7, Canada;
- Laboratoire de recherche sur le hockey UQTR, 3351 Boulevard des Forges, Trois-Rivières, QC G9A 5H7, Canada
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Jin H, Lee H. Risk Factors Based on Analysis of Injury Mechanism and Protective Equipment for Ice Hockey Amateur Players. Int J Environ Res Public Health 2022; 19:4232. [PMID: 35409913 DOI: 10.3390/ijerph19074232] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/16/2022] [Revised: 03/21/2022] [Accepted: 03/31/2022] [Indexed: 02/04/2023]
Abstract
Considering the increasing popularity of ice hockey in South Korea, types of injuries and protective equipment for amateur club members need to be further studied. The purpose of the study is to investigate various injuries and protective equipment used by amateur players and to analyze different risk factors by collecting information on areas of injury and their mechanisms. The online survey for 102 participants was designed to address the general information of participants, types of injuries, information about ice hockey equipment, and open-ended questions about injuries and equipment. We conducted in-depth face-to-face interviews with five players about their experiences with injury and opinions about the protective equipment. In total, 60% of the survey participants had experienced injuries, including to the knee (22.6%), shoulder (21.6%), ankle (20.6%), and wrist (14.7%), in order of frequency. Types of injury included sprain (33.3%), contusion (31.4%), fracture (17.7%), abrasion (10.8%), and concussion (0.9%). Injury mechanisms included instances in which those with less proficiency in skating would be injured initially from player-to-player contact, and from landing on the ice or crashing into the fence afterward. We acknowledged how important wearing correctly sized equipment is for protection, and we highlighted the need to develop protective gear that accommodates Asian body measurements.
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Puolakkainen T, Murros OJ, Abio A, Thorén H, Snäll J. Sports-based distribution of facial fractures - findings from a four-season country. Acta Odontol Scand 2022; 80:191-196. [PMID: 34555306 DOI: 10.1080/00016357.2021.1980609] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
OBJECTIVE The aim of this study was to elucidate the relationship between injury mechanisms and sports-related facial fractures, and to evaluate the changes in incidence rates of facial fractures sustained in sports-related events in a 30-year period. MATERIAL AND METHODS This retrospective cohort study included all patients sports-related facial fractures admitted to a tertiary trauma centre during 2013-2018. Specific fracture types, sports, injury mechanisms as well as patient- and injury related variables are presented. The results underwent evaluated statistically with logistic regression analysis. RESULTS Facial fractures occurred most frequently while playing ice hockey and football. Unilateral zygomatic-maxillary-orbital and isolated mandibular fractures accounted for 74.2% of all fracture types. In total, 99 patients (46.5%) required surgical intervention for their facial injuries. About 12.7% of patients sustained associated injuries in addition to facial fractures. Overall, the number of sports-related facial fractures has increased during the last three decades mostly due to the surging rates of ice hockey- and football-related facial fractures. CONCLUSIONS Sport-related facial fractures have markedly increased in different sports disciplines during the past decades. The use of safety gear to protect the facial area should be enforced particularly in ice hockey.
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Affiliation(s)
- Tero Puolakkainen
- Department of Oral and Maxillofacial Diseases, University of Helsinki and Helsinki University Hospital, Helsinki, Finland
| | - Olli-Jussi Murros
- Department of Oral and Maxillofacial Diseases, University of Helsinki and Helsinki University Hospital, Helsinki, Finland
| | - Anne Abio
- Injury Epidemiology and Prevention Research Group, Turku Brain Injury Centre, Division of Clinical Neurosciences, Turku University Hospital and University of Turku, Turku, Finland
- Heidelberg Institute of Global Health, University of Heidelberg, Heidelberg, Germany
| | - Hanna Thorén
- Department of Oral and Maxillofacial Surgery, Institute of Dentistry, University of Turku, Turku, Finland
- Department of Oral and Maxillofacial Diseases, Turku University Hospital, Turku, Finland, Finland
| | - Johanna Snäll
- Department of Oral and Maxillofacial Diseases, University of Helsinki and Helsinki University Hospital, Helsinki, Finland
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Cohen JN, Thompson KMA, Jamnik VK, Gledhill N, Burr JF. Relationship of Fitness Combine Results and National Hockey League Performance: A 25-Year Analysis. Int J Sports Physiol Perform 2022;:1-9. [PMID: 35245896 DOI: 10.1123/ijspp.2021-0317] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2021] [Revised: 11/30/2021] [Accepted: 12/08/2021] [Indexed: 11/18/2022]
Abstract
PURPOSE Along with past performance, professional teams consider physical fitness and physiological potential in determining the value of prospective draft picks. The National Hockey League (NHL) Combine fitness results have been examined for their ability to predict draft order, but not bona fide hockey performance. Therefore, we sought to identify the relationships of combine fitness test results to short- and long-term NHL performance. METHODS During NHL Combine fitness testing (1994-2007), a standardized battery of tests was conducted. Player performance (1995-2020) was quantified using career cumulative points, time on ice, transitional period to playing in the NHL, and NHL career length. Forward and defensive positions were considered separately. Goalies were not considered. Stepwise linear regression analysis was used to identify fitness variables that predict NHL success. RESULTS Overall models ranged in their predictive ability from 2% to 16%. The transitional period was predicted by peak leg power and aerobic capacity (V˙O2max; forwards, R2 = .03, and defense, R2 = .06, both P < .01). Points and time on ice within seasons 1 to 3 were predicted by peak leg power and V˙O2max for forwards and defense (R2 = .02-.09, P < .01). Among players accumulating 10 NHL seasons, cumulative points were inversely related to upper-body push-strength-related variables in forwards (R2 = .11) and defense (R2 = .16; both P < .01). CONCLUSIONS The NHL Combine fitness testing offers meaningful data that can inform the likelihood of future success. Peak leg power and V˙O2max predict league entry and early career success. Counterintuitively, upper-body strength is inversely related to long-term performance, which may offer insight into recruitment strategies, player development, or differential team roles.
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Abstract
OBJECTIVES This observational study evaluated the impact of return-to-play protocols to prevent transmission of SARS-CoV-2 in a youth ice hockey programme in Virginia Beach, Virginia. METHODS Following an outbreak of SARS-CoV-2 in November 2020, a COVID-19 Response Team evaluated the epidemiological data to identify transmission dynamics and develop enhanced protocols to prevent transmission. During the subsequent 18-week study period, incident cases were investigated to identify the likely transmission source; testing, quarantine and isolation recommendations were provided to families in accordance with Centers for Disease Control and Prevention guidelines. RESULTS Simple but stringent protocols were implemented among 148 youth ice hockey players ages 6-18. Players were required to arrive at the rink in full gear; locker rooms were closed, building entry was limited to one parent per player, and masks were required at all times except for players on the ice. Following implementation of the enhanced protocols, more than 500 practices and games were completed with at least 15 858 athlete-hours of exposure and no within-programme COVID-19 transmission was detected despite high community incidence and sporadic household exposures. CONCLUSION This study suggests indoor youth sports can operate safely with appropriate protocols in place, even within communities of high COVID-19 transmission, even when athletes are not yet vaccinated or wearing masks during play. Transmission appears to be more likely in congested indoor areas involving adults than on the ice during play. Protocols should be developed in collaboration with programme participants. Strong collaboration in the interest of youth sports can motivate adoption of protocols which prevent within-team transmission.
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Affiliation(s)
- Allison Krug
- Artemis Biomedical Communications LLC, Virginia Beach, Virginia, USA
| | - Richard Appleby
- Hampton Roads Youth Hockey Association, Virginia Beach, Virginia, USA
| | - Robert Pizzini
- Hampton Roads Youth Hockey Association, Virginia Beach, Virginia, USA
| | - Tracy Beth Høeg
- Department of Physical Medicine & Rehabilitation, University of California-Davis, Sacramento, California, USA
- Northern California Orthopaedic Associates, Grass Valley, California, USA
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Emery CA, Eliason P, Warriyar V, Palacios-Derflingher L, Black AM, Krolikowski M, Spencer N, Sick S, Kozak S, Schneider KJ, Babul S, Mrazik M, Lebrun C, Goulet C, Macpherson A, Hagel BE. Body checking in non-elite adolescent ice hockey leagues: it is never too late for policy change aiming to protect the health of adolescents. Br J Sports Med 2022; 56:12-17. [PMID: 34016603 DOI: 10.1136/bjsports-2020-103757] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/01/2021] [Indexed: 11/03/2022]
Abstract
OBJECTIVES The objective of this study is to evaluate the effect of policy change disallowing body checking in adolescent ice hockey leagues (ages 15-17) on reducing rates of injury and concussion. METHODS This is a prospective cohort study. Players 15-17 years-old were recruited from teams in non-elite divisions of play (lower 40%-70% by division of play depending on year and city of play in leagues where policy permits or prohibit body checking in Alberta and British Columbia, Canada (2015-18). A validated injury surveillance methodology supported baseline, exposure-hours and injury data collection. Any player with a suspected concussion was referred to a study physician. Primary outcomes include game-related injuries, game-related injuries (>7 days time loss), game-related concussions and game-related concussions (>10 days time loss). RESULTS 44 teams (453 player-seasons) from non-body checking and 52 teams (674 player-seasons) from body checking leagues participated. In body checking leagues there were 213 injuries (69 concussions) and in non-body checking leagues 40 injuries (18 concussions) during games. Based on multiple multilevel mixed-effects Poisson regression analyses, policy prohibiting body checking was associated with a lower rate of injury (incidence rate ratio (IRR): 0.38 (95% CI 0.24 to 0.6)) and concussion (IRR: 0.49; 95% CI 0.26 to 0.89). This translates to an absolute rate reduction of 7.82 injuries/1000 game-hours (95% CI 2.74 to 12.9) and the prevention of 7326 injuries (95% CI 2570 to 12083) in Canada annually. CONCLUSIONS The rate of injury was 62% lower (concussion 51% lower) in leagues not permitting body checking in non-elite 15-17 years old leagues highlighting the potential public health impact of policy prohibiting body checking in older adolescent ice hockey players.
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Affiliation(s)
- Carolyn A Emery
- Sport Injury Prevention Research Centre, Faculty of Kinesiology, University of Calgary, Calgary, Alberta, Canada
- Department of Pediatrics, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada
| | - Paul Eliason
- Sport Injury Prevention Research Centre, Faculty of Kinesiology, University of Calgary, Calgary, Alberta, Canada
| | - Vineetha Warriyar
- Sport Injury Prevention Research Centre, Faculty of Kinesiology, University of Calgary, Calgary, Alberta, Canada
| | - Luz Palacios-Derflingher
- Sport Injury Prevention Research Centre, Faculty of Kinesiology, University of Calgary, Calgary, Alberta, Canada
| | - Amanda Marie Black
- Sport Injury Prevention Research Centre, Faculty of Kinesiology, University of Calgary, Calgary, Alberta, Canada
| | - Maciek Krolikowski
- Sport Injury Prevention Research Centre, Faculty of Kinesiology, University of Calgary, Calgary, Alberta, Canada
| | - Nicole Spencer
- Sport Injury Prevention Research Centre, Faculty of Kinesiology, University of Calgary, Calgary, Alberta, Canada
| | - Stacy Sick
- Sport Injury Prevention Research Centre, Faculty of Kinesiology, University of Calgary, Calgary, Alberta, Canada
| | - Stacy Kozak
- Sport Injury Prevention Research Centre, Faculty of Kinesiology, University of Calgary, Calgary, Alberta, Canada
| | - Kathryn J Schneider
- Sport Injury Prevention Research Centre, Faculty of Kinesiology, University of Calgary, Calgary, Alberta, Canada
| | - Shelina Babul
- Department of Pediatrics, Faculty of Medicine, University of British Columbia, Vancouver, British Columbia, Canada
- British Columbia Injury Research & Prevention Unit, British Columbia Children's Hospital, Vancouver, British Columbia, Canada
| | - Martin Mrazik
- Department of Educational Psychology, University of Alberta, Edmonton, Alberta, Canada
| | - Constance Lebrun
- Glen Sather Sports Medicine Clinic, Faculty of Medicine and Dentistry, University of Alberta, Edmonton, Alberta, Canada
- Department of Family Medicine, Faculty of Medicine and Dentistry, University of Alberta, Edmonton, Alberta, Canada
| | - Claude Goulet
- Department of Physical Education, Laval University, Quebec City, Quebec, Canada
| | - Alison Macpherson
- School of Kinesiology & Health SCience, Faculty of Health, York University, Toronto, Ontario, Canada
| | - Brent E Hagel
- Sport Injury Prevention Research Centre, Faculty of Kinesiology, University of Calgary, Calgary, Alberta, Canada
- Department of Pediatrics, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada
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Critelli K, Demiris V, Klatt BN, Crane B, Anson ER. Facemasks Block Lower Visual Field in Youth Ice Hockey. Front Sports Act Living 2021; 3:787182. [PMID: 34939030 PMCID: PMC8685261 DOI: 10.3389/fspor.2021.787182] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2021] [Accepted: 11/11/2021] [Indexed: 11/13/2022] Open
Abstract
Wearing a facemask (FM) reduces the spread of COVID-19, but it also blocks a person's lower visual field. Many new public safety rules were created in response to COVID-19, including mandated FM wearing in some youth sports like youth ice hockey. We hypothesized that FM wearing in youth hockey players obstructs the lower field of view and may impact safety. Youth hockey players (n = 33) aged 12.03 (1.6) years button press when they saw an LED on the floor turn on in two conditions (wearing FM or no FM) in random order. An interleaved one-up/one-down two-alternative-forced-choice adaptive staircase design was used. Visual thresholds were calculated for each condition and participant. The visual angle threshold (VAT) was determined using standing eye height and the linear distance from the tip of the skates to the visual threshold. Paired t-tests determined whether mask wearing changed the VAT. We modeled the probability a player could see the puck on their stick in four distinct scenarios to estimate the potential impact of FM wearing during hockey play. The average unmasked VAT (11.4 degrees) was significantly closer to the skates than the masked VAT (20.3 degrees) (p < 0.001). Our model indicated a significant reduction in ability to visualize the puck using peripheral vision when more upright while wearing a FM. FM wearing compromised their lower visual field, suggesting a downward head tilt may be necessary to see the puck. Playing ice hockey while wearing a FM may lead to unsafe on-ice playing conditions due to downward head tilt to see the puck.
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Affiliation(s)
- Kyle Critelli
- Department of Otolaryngology, University of Rochester, Rochester, NY, United States
| | - Victoria Demiris
- Physical Therapy Department, University of Rochester, Rochester, NY, United States
| | - Brooke N Klatt
- Physical Therapy Department, University of Pittsburgh, Pittsburgh, PA, United States
| | - Benjamin Crane
- Department of Otolaryngology, University of Rochester, Rochester, NY, United States.,Department of Neuroscience, University of Rochester, Rochester, NY, United States.,Department of Biomedical Engineering, University of Rochester, Rochester, NY, United States
| | - Eric R Anson
- Department of Otolaryngology, University of Rochester, Rochester, NY, United States.,Physical Therapy Department, University of Rochester, Rochester, NY, United States.,Department of Neuroscience, University of Rochester, Rochester, NY, United States
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Wörner T, Frayne RJ, Magnusson T, Eek F. The Perceived Demands of Ice Hockey Goaltending Movements on the Hip and Groin Region: An Elite Coach and Player Perspective. Orthop J Sports Med 2021; 9:23259671211055699. [PMID: 34881340 PMCID: PMC8647250 DOI: 10.1177/23259671211055699] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/07/2021] [Accepted: 07/26/2021] [Indexed: 11/16/2022] Open
Abstract
Background: Many ice hockey goaltending techniques force hip joints and groin muscles
into extreme ranges of motion, which may increase the risk of hip and groin
problems. Purpose: To explore how elite goaltenders and goaltending coaches perceive the demands
of common goaltending techniques on the hip and groin region. We further
explored differences in perception between goaltenders and their coaches as
well as between junior (age <20 years) and senior (age ≥20 years)
goaltenders. Study Design: Cross-sectional survey. Methods: We developed a model to categorize common ice hockey goaltending techniques
into quantifiable units and invited elite goaltenders and coaches in Sweden
to complete an online survey. Participants were asked to rate the perceived
demands of each technique on the hip and groin using a Likert scale (not at
all, slightly, somewhat, very, or extremely demanding). Using the chi-square
test, the proportion of participants perceiving each technique as very or
extremely demanding were compared between goaltenders and coaches as well as
between senior and junior goaltenders. Results: We received responses from 132 goaltenders and 43 coaches. The stances most
frequently perceived as very or extremely demanding were the reverse
vertical horizontal post-play (40%) and the butterfly save (25%). Among
transitions, movements into the post were most frequently rated as very or
extremely demanding (11%–40%). Several techniques were perceived as
demanding by a larger share of coaches than goaltenders (difference,
13%–46%; P < .001–.028) and a larger share of senior
versus junior goaltenders (difference, 12%–20%; P =
.13–.18). Conclusion: The post-play and the butterfly were the goaltending techniques most
frequently perceived as demanding, and more coaches than goaltenders
percieved these techniques demanding. The results of this study may inform
injury prevention efforts for ice hockey goaltending.
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Affiliation(s)
- Tobias Wörner
- Department of Health Sciences, Lund University, Lund, Sweden
| | - Ryan J Frayne
- School of Health and Human Performance, Dalhousie University, Halifax, Nova Scotia, Canada
| | | | - Frida Eek
- Department of Health Sciences, Lund University, Lund, Sweden
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Amiot CE, Skerlj F. The Role of Dynamic Social Norms in Promoting the Internalization of Sportspersonship Behaviors and Values and Psychological Well-Being in Ice Hockey. Front Psychol 2021; 12:744797. [PMID: 34803827 PMCID: PMC8595139 DOI: 10.3389/fpsyg.2021.744797] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2021] [Accepted: 10/08/2021] [Indexed: 01/07/2023] Open
Abstract
Conducted among parents of young ice hockey players, this field experiment tested if making salient increasingly popular (i.e., dynamic) social norms that promote sportspersonship, learning, and having fun in sports, increases parents' own self-determined endorsement of these behaviors and values, improves their psychological well-being, and impacts on their children's on-ice behaviors. Hockey parents (N = 98) were randomly assigned to the experimental condition (i.e., presenting dynamic norms that increasingly favor sportspersonship, learning, and fun) vs. control condition (i.e., presenting neutral information). Parents' motivations for encouraging their child to learn and to have fun in hockey were then assessed. Score sheets for the games that followed the study provided access to their children's on-ice behaviors (i.e., penalties), as indicators of sportspersonship. Parents in the experimental condition reported higher self-determination for encouraging their child to learn and have fun in hockey compared to parents in the control condition. Furthermore, children of parents in the experimental condition had more assists. A mediation model revealed that the dynamic norms manipulation increased parents' self-determined motivation for encouraging their child to learn and to have fun in hockey, which in turn, predicted higher psychological well-being (i.e., lower anxiety, more vitality). Together, these results provide support for the contention that highlighting increasingly popular social norms that promote sportspersonship, learning, and fun in sports, represents a promising strategy for creating positive social change in this life context.
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Affiliation(s)
- Catherine E. Amiot
- Department of Psychology, Université du Québec à Montréal, Montréal, QC, Canada
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Abstract
Ice hockey has one of the highest concussion rates among youth sports. Sensor technology has been implemented in contact and collision sports to inform the frequency and severity of head impacts experienced on-ice. However, existing studies have utilized helmet-mounted sensors with limited accuracy. The objective of this study was to characterize head kinematics of contact events in a sample of youth boys' hockey players using a validated instrumented mouthpiece with improved accuracy. Head kinematics from 892 video-verified events were recorded from 18 athletes across 127 sessions. Median peak resultant linear acceleration, rotational velocity, and rotational acceleration of video-verified events were 7.4 g, 7.7 rad/s, and 576 rad/s2, respectively. Contact events occurred at a higher rate in games (2.48 per game) than practices (1.30 per practice). Scenarios involving head contact had higher peak kinematics than those without head contact. This study improves our understanding of head kinematics in boys' youth hockey.
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Affiliation(s)
- Abigail G Swenson
- Department of Neuroscience, Wake Forest University School of Medicine, Winston Salem, NC, USA
| | - N Stewart Pritchard
- Virginia Tech, Wake Forest University School of Biomedical Engineering and Sciences, Winston Salem, NC, USA
| | - Logan E Miller
- Department of Biomedical Engineering, Wake Forest University School of Medicine, Winston Salem, NC, USA
| | - Jillian E Urban
- Department of Biomedical Engineering, Wake Forest University School of Medicine, Winston Salem, NC, USA
| | - Joel D Stitzel
- Department of Biomedical Engineering, Wake Forest University School of Medicine, Winston Salem, NC, USA
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Poltavski D, Biberdorf D, Praus Poltavski C. Which Comes First in Sports Vision Training: The Software or the Hardware Update? Utility of Electrophysiological Measures in Monitoring Specialized Visual Training in Youth Athletes. Front Hum Neurosci 2021; 15:732303. [PMID: 34690722 PMCID: PMC8527177 DOI: 10.3389/fnhum.2021.732303] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2021] [Accepted: 09/06/2021] [Indexed: 11/13/2022] Open
Abstract
In the present study we combined popular methods of sports vision training (SVT) with traditional oculomotor protocols of Optometric Vision Therapy (OVT) and electrophysiological indexes of EEG and VEP activity to monitor training progress and changes in performance of youth ice hockey players without the history of concussion. We hypothesized that administration of OVT protocols before SVT training may result in larger performance improvements compared to the reverse order due to the initial strengthening of visual hardware capable of handling greater demands during training of visuomotor integration and information processing skills (visual software). In a cross-over design 53 youth ice hockey players (ages 13-18) were randomly assigned to one of the two training groups. Group one (hardware-software group) completed 5 weeks of oculomotor training first followed by 5 weeks of software training. For group 2 (software-hardware) the order of procedures were reversed. After 10 weeks of training both groups significantly improved their performance on all but one measure of the Nike/Senaptec Sensory station measures. Additionally, the software-hardware training order resulted in significantly lower frontal theta-to-gamma amplitude ratios on the Nike/Senaptec test of Near-Far Quickness as well as in faster P100 latencies. Both training orders also resulted in significant decreases in post-treatment P100 amplitude to transient VEP stimuli as well as decreased theta-gamma ratios for perception span, Go/No-Go and Hand Reaction time. The observed changes in the electrophysiological indexes in the present study are thought to reflect greater efficiency in visual information processing and cognitive resource allocation following 10 weeks of visual training. There is also some evidence of the greater effectiveness of the software-hardware training order possibly due to the improved preparedness of the oculomotor system in the youth athletes for administration of targeted protocols of the Optometric Vision Therapy.
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Affiliation(s)
- Dmitri Poltavski
- Department of Psychology, University of North Dakota, Grand Forks, ND, United States
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Abstract
STUDY DESIGN This review article examines the biomechanics that underly hockey-related cervical spine injuries, the preventative measures to curtail them, optimal management strategies for the injured player and return to play criteria. OBJECTIVE Hockey is a sport with one of the highest rates of cervical spine injury, but by understanding the underlying pathophysiology and context in which these injuries can occur, it is possible to reduce their incidence and successfully manage the injured player. METHODS Multiple online databases including PubMed, Google Scholar, Columbia Libraries Catalog, Cochrane Library and Ovid MEDLINE were queried for original articles concerning spinal injuries in ice hockey. All relevant papers were screened and subsequently organized for discussion in our subtopics. RESULTS Cervical fractures in ice hockey most often occur due to an increased axial load, with a check from behind the most common precipitating event. CONCLUSIONS Despite the recognized risk for cervical spine trauma in ice hockey, further research is still needed to optimize protocols for both mitigating injury risk and managing injured players.
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Affiliation(s)
- Cole Morrissette
- Department of Orthopedic Surgery, New York-Presbyterian/Columbia University Irving Medical Center, New York, NY, USA
| | - Paul J. Park
- Department of Orthopedic Surgery, New York-Presbyterian/Columbia University Irving Medical Center, New York, NY, USA
| | - Ronald A. Lehman
- Department of Orthopedic Surgery, New York-Presbyterian/Columbia University Irving Medical Center, New York, NY, USA
| | - Charles A. Popkin
- Department of Orthopedic Surgery, New York-Presbyterian/Columbia University Irving Medical Center, New York, NY, USA,Charles A. Popkin, Columbia Orthopedics, Center for Shoulder, Elbow and Sports Medicine, 622 W 168. Street 11 Floor, New York, NY 10032, USA.
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Nordstrøm A, Bahr R, Clarsen B, Talsnes O. Prevalence and Burden of Self-Reported Health Problems in Junior Male Elite Ice Hockey Players: A 44-Week Prospective Cohort Study. Am J Sports Med 2021; 49:3379-3385. [PMID: 34399056 PMCID: PMC8485253 DOI: 10.1177/03635465211032979] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
BACKGROUND Little is known about the burden of overuse injuries and illnesses in junior elite ice hockey. PURPOSE To describe the prevalence and burden of all health problems in junior male elite ice hockey players in Norway during 1 school year. STUDY DESIGN Descriptive epidemiological study. METHODS A total of 206 junior male ice hockey players (mean age, 17 years; range, 15-20 years) attending specialized sports academy high schools in Norway reported all health problems, acute injuries, overuse injuries, and illnesses, weekly during the 2018-2019 school year (44 weeks). The players self-reported injuries and illnesses using the Oslo Sports Trauma Research Center Questionnaire on Health Problems. RESULTS Of the players included, 25% (95% CI, 23%-27%) reported at least 1 health problem at any given time, while 16% (95% CI, 14%-17%) experienced health problems with a substantial negative effect on training and performance. Of the total burden of health problems, acute injuries accounted for 44%, overuse injuries 31%, and illnesses 25%. For acute injuries, the greatest burden was caused by injuries to the ankle, knee, and hand, whereas for overuse injuries the most burdensome location was the hip/groin and knee. CONCLUSION This study documented that while acute injuries did represent the greatest problem among junior elite ice hockey players, overuse injuries, especially to the knee and hip/groin, also had a substantial effect.
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Affiliation(s)
- Anine Nordstrøm
- Oslo Sports Trauma Research Center, Department of Sports Medicine, Norwegian School of Sports Sciences, Oslo, Norway,Sykehuset Innlandet HF, Innlandet Hospital Trust, Elverum, Norway,Anine Nordstrøm, MD, Oslo Sports Trauma Research Center, Department of Sports Medicine, Norwegian School of Sports Sciences, Postboks 4014 Ullevål stadion, 0806 Oslo, Norway () (Twitter: @AnineNordstrom)
| | - Roald Bahr
- Oslo Sports Trauma Research Center, Department of Sports Medicine, Norwegian School of Sports Sciences, Oslo, Norway
| | - Ben Clarsen
- Sykehuset Innlandet HF, Innlandet Hospital Trust, Elverum, Norway,Center for Disease Burden, Norwegian Institute of Public Health, Bergen, Norway
| | - Ove Talsnes
- Sykehuset Innlandet HF, Innlandet Hospital Trust, Elverum, Norway,University of Oslo, Oslo University Hospital, Oslo, Norway
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Carrick FR, Pagnacco G, Azzolino SF, Hunfalvay M, Oggero E, Frizzell T, Smith CJ, Pawlowski G, Campbell NKJ, Fickling SD, Lakhani B, D'Arcy RCN. Brain Vital Signs in Elite Ice Hockey: Towards Characterizing Objective and Specific Neurophysiological Reference Values for Concussion Management. Front Neurosci 2021; 15:670563. [PMID: 34434084 PMCID: PMC8382572 DOI: 10.3389/fnins.2021.670563] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2021] [Accepted: 07/09/2021] [Indexed: 12/02/2022] Open
Abstract
Background: Prior concussion studies have shown that objective neurophysiological measures are sensitive to detecting concussive and subconcussive impairments in youth ice-hockey. These studies monitored brain vital signs at rink-side using a within-subjects design to demonstrate significant changes from pre-season baseline scans. However, practical clinical implementation must overcome inherent challenges related to any dependence on a baseline. This requires establishing the start of normative reference data sets. Methods: The current study collected specific reference data for N = 58 elite, youth, male ice-hockey players and compared these with a general reference dataset from N = 135 of males and females across the lifespan. The elite hockey players were recruited to a select training camp through CAA Hockey, a management agency for players drafted to leagues such as the National Hockey League (NHL). The statistical analysis included a test-retest comparison to establish reliability, and a multivariate analysis of covariance to evaluate differences in brain vital signs between groups with age as a covariate. Findings: Test-retest assessments for brain vital signs evoked potentials showed moderate-to-good reliability (Cronbach’s Alpha > 0.7, Intraclass correlation coefficient > 0.5) in five out of six measures. The multivariate analysis of covariance showed no overall effect for group (p = 0.105), and a significant effect of age as a covariate was observed (p < 0.001). Adjusting for the effect of age, a significant difference was observed in the measure of N100 latency (p = 0.022) between elite hockey players and the heterogeneous control group. Interpretation: The findings support the concept that normative physiological data can be used in brain vital signs evaluation in athletes, and should additionally be stratified for age, skill level, and experience. These can be combined with general norms and/or individual baseline assessments where appropriate and/or possible. The current results allow for brain vital sign evaluation independent of baseline assessment, therefore enabling objective neurophysiological evaluation of concussion management and cognitive performance optimization in ice-hockey.
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Affiliation(s)
- Frederick R Carrick
- University of Central Florida College of Medicine, Orlando, FL, United States.,MGH Institute of Health Professions, Boston, MA, United States.,Centre for Mental Health Research, University of Cambridge, Cambridge, United Kingdom.,Centre for Mental Health Research in Association with University of Cambridge, Cambridge, United Kingdom
| | - Guido Pagnacco
- Centre for Mental Health Research in Association with University of Cambridge, Cambridge, United Kingdom.,Department of Electrical and Computer Engineering, University of Wyoming, Laramie, WY, United States
| | - Sergio F Azzolino
- Centre for Mental Health Research in Association with University of Cambridge, Cambridge, United Kingdom
| | - Melissa Hunfalvay
- Centre for Mental Health Research in Association with University of Cambridge, Cambridge, United Kingdom
| | - Elena Oggero
- Centre for Mental Health Research in Association with University of Cambridge, Cambridge, United Kingdom.,Department of Electrical and Computer Engineering, University of Wyoming, Laramie, WY, United States
| | - Tory Frizzell
- BrainNET, Health and Technology District, Vancouver, BC, Canada
| | | | - Gabriela Pawlowski
- BrainNET, Health and Technology District, Vancouver, BC, Canada.,Centre for Neurology Studies, HealthTech Connex, Vancouver, BC, Canada
| | - Natasha K J Campbell
- BrainNET, Health and Technology District, Vancouver, BC, Canada.,Centre for Neurology Studies, HealthTech Connex, Vancouver, BC, Canada
| | - Shaun D Fickling
- BrainNET, Health and Technology District, Vancouver, BC, Canada.,Centre for Neurology Studies, HealthTech Connex, Vancouver, BC, Canada
| | - Bimal Lakhani
- Centre for Neurology Studies, HealthTech Connex, Vancouver, BC, Canada
| | - Ryan C N D'Arcy
- BrainNET, Health and Technology District, Vancouver, BC, Canada.,Centre for Neurology Studies, HealthTech Connex, Vancouver, BC, Canada.,DM Centre for Brain Health, Department of Radiology, University of British Columbia, Vancouver, BC, Canada
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Aguiar OMG, Radivojevic O, Potvin BM, Vakili O, Robinovitch SN. Effective stiffness, damping and mass of the body during laboratory simulations of shoulder checks in ice hockey. Sports Biomech 2021:1-12. [PMID: 34319214 DOI: 10.1080/14763141.2021.1951828] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/05/2021] [Accepted: 06/30/2021] [Indexed: 10/20/2022]
Abstract
Ice hockey is a fast-paced sport with a high incidence of collisions between players. Shoulder checks are especially common, accounting for a large portion of injuries including concussions. The forces generated during these collisions depend on the inertial and viscoelastic characteristics of the impacting bodies. Furthermore, the effect of shoulder pads in reducing peak force depends on the baseline (unpadded) properties of the shoulder. We conducted experiments with nine men's ice hockey players (aged 19-26) to measure their effective shoulder stiffness, damping and mass during the impact stage of a shoulder check. Participants delivered a style of check commonly observed in men's university ice hockey, involving lateral impact to the deltoid region, with the shoulder brought stationary by the collision. The effective stiffness and damping coefficient of the shoulder averaged 12.8 kN/m and 377 N-s/m at 550 N, and the effective mass averaged 47% of total body mass. The damping coefficient and stiffness increased with increasing force, but there was no significant difference in the damping coefficient above 350 N. Our results provide new evidence on the dynamics of shoulder checks in ice hockey, as a starting point for designing test systems for evaluating and improving the protective value of shoulder pads.
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Affiliation(s)
- Olivia M G Aguiar
- Department of Biomedical Physiology and Kinesiology, Simon Fraser University, Burnaby, BC, Canada
| | - Olga Radivojevic
- Department of Biomedical Physiology and Kinesiology, Simon Fraser University, Burnaby, BC, Canada
| | - Brigitte M Potvin
- Department of Biomedical Physiology and Kinesiology, Simon Fraser University, Burnaby, BC, Canada
| | - Omid Vakili
- Department of Biomedical Physiology and Kinesiology, Simon Fraser University, Burnaby, BC, Canada
| | - Stephen N Robinovitch
- Department of Biomedical Physiology and Kinesiology, Simon Fraser University, Burnaby, BC, Canada
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Lundgren T, Reinebo G, Fröjmark MJ, Jäder E, Näslund M, Svartvadet P, Samuelsson U, Parling T. Acceptance and Commitment Training for Ice Hockey Players: A Randomized Controlled Trial. Front Psychol 2021; 12:685260. [PMID: 34367007 PMCID: PMC8339210 DOI: 10.3389/fpsyg.2021.685260] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2021] [Accepted: 06/30/2021] [Indexed: 11/13/2022] Open
Abstract
Recent systematic reviews on the topic of mindfulness- and acceptance-based approaches in sport psychology conclude that there is a need for further trials using a more robust research methodology with direct performance as outcome. Acceptance and Commitment Training (ACT) is a contextual behavioral change method that focuses on facilitating psychological processes such as values, committed action, acceptance and mindfulness. In the present study designed as a randomized controlled trial, 34 junior elite ice hockey players were allocated into either an ACT group intervention or a wait list control group. Results showed significant effects on both objective performance outcomes (goals, assists, and taken shots) and blinded coach ratings of players' performance, focus and commitment to their development in favor of the ACT group. Effects lasted at 3-month follow-up for the coach ratings, but not for the objective performance measures. All ACT trained players recommended ACT to other players and considered the training as important for their development as ice hockey players. The results add to the growing body of evidence on ACT interventions for athletes and its effect on performance. Future studies should investigate the maintenance of effects from the psychological training over time, using robust research methodology and investigate theoretical coherent potential mediating variables.
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Affiliation(s)
- Tobias Lundgren
- Centre for Psychiatry Research, Department of Clinical Neuroscience, Karolinska Institutet, Stockholm Health Care Services, Stockholm County Council, Stockholm, Sweden
- Department of Psychology, Stockholm University, Stockholm, Sweden
| | - Gustaf Reinebo
- Centre for Psychiatry Research, Department of Clinical Neuroscience, Karolinska Institutet, Stockholm Health Care Services, Stockholm County Council, Stockholm, Sweden
| | - Markus Jansson Fröjmark
- Centre for Psychiatry Research, Department of Clinical Neuroscience, Karolinska Institutet, Stockholm Health Care Services, Stockholm County Council, Stockholm, Sweden
| | - Emil Jäder
- Department of Psychology, Stockholm University, Stockholm, Sweden
| | | | | | | | - Thomas Parling
- Centre for Psychiatry Research, Department of Clinical Neuroscience, Karolinska Institutet, Stockholm Health Care Services, Stockholm County Council, Stockholm, Sweden
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Vleugels R, Van Herbruggen B, Fontaine J, De Poorter E. Ultra-Wideband Indoor Positioning and IMU-Based Activity Recognition for Ice Hockey Analytics. Sensors (Basel) 2021; 21:4650. [PMID: 34300390 DOI: 10.3390/s21144650] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/11/2021] [Revised: 06/29/2021] [Accepted: 07/02/2021] [Indexed: 11/17/2022]
Abstract
Currently, gathering statistics and information for ice hockey training purposes mostly happens by hand, whereas the automated systems that do exist are expensive and difficult to set up. To remedy this, in this paper, we propose and analyse a wearable system that combines player localisation and activity classification to automatically gather information. A stick-worn inertial measurement unit was used to capture acceleration and rotation data from six ice hockey activities. A convolutional neural network was able to distinguish the six activities from an unseen player with a 76% accuracy at a sample frequency of 100 Hz. Using unseen data from players used to train the model, a 99% accuracy was reached. With a peak detection algorithm, activities could be automatically detected and extracted from a complete measurement for classification. Additionally, the feasibility of a time difference of arrival based ultra-wideband system operating at a 25 Hz update rate was determined. We concluded that the system, when the data were filtered and smoothed, provided acceptable accuracy for use in ice hockey. Combining both, it was possible to gather useful information about a wide range of interesting performance measures. This shows that our proposed system is a suitable solution for the analysis of ice hockey.
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Vermeulen TF, Boyd LA, Spriet LL. Dietary Macronutrient and Micronutrient Intake over a 7-Day Period in Female Varsity Ice Hockey Players. Nutrients 2021; 13:nu13072262. [PMID: 34208963 PMCID: PMC8308293 DOI: 10.3390/nu13072262] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2021] [Revised: 06/24/2021] [Accepted: 06/29/2021] [Indexed: 12/19/2022] Open
Abstract
This study examined the energy, macronutrient, and micronutrient intakes of female ice hockey players over a 7-d period including game, practice, and rest days. Twenty-three female varsity players (19.0 ± 1.1 yr, 167.1 ± 6.5 cm, 67.0 ± 8.0 kg) volunteered for the study. Average total daily energy expenditure (TDEE) was estimated over the 7-day period. Average 7-day energy intake (EI) and TDEE were 2354 ± 353 and 2304 ± 204 kcal. The majority (n = 19) of athletes had an EI ≥ 90% of their estimated TDEE. Macronutrient intake was 52% carbohydrate (CHO), 32% fat, and 16% protein of total EI, although CHO intake was slightly below recommendations (5 g/kg BM/d) on game and practice (4.8 ± 1.4 and 4.5 g/kg BM/d) days. Game day EI was greater than practice and rest days. Recommended micronutrient intakes were not met by most athletes for iron, calcium, vitamin D, and potassium, and intakes were similar between game, practice, and rest days. In summary, the average EI for female varsity ice hockey players appeared adequate to meet their energy needs over a weekly cycle of game, practice, and rest days. However, these female athletes would benefit from increasing CHO intake on game and practice days and selecting foods that are rich in vitamins and minerals.
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Perez J, Guilhem G, Brocherie F. Truncated Estimation of Skating Force-Velocity Profiling When Using High-Speed Video-Based Methods Compared to Radar-Derived Processing. Front Bioeng Biotechnol 2021; 9:661744. [PMID: 34249880 PMCID: PMC8264440 DOI: 10.3389/fbioe.2021.661744] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2021] [Accepted: 06/01/2021] [Indexed: 11/30/2022] Open
Abstract
This study aimed to compare the force-velocity mechanical variables derived from high-speed video- and radar-based method during forward skating sprint in ice hockey. Thirteen elite female ice hockey players performed two 40-m forward skating sprints to determine, in the horizontal plane, maximal velocity reached (Vmax), relative maximal theoretical force (F0), maximal theoretical velocity (V0), relative maximal power (Pmax), linear slope of the force-velocity relationship (FV slope), maximal value of the ratio of force (RFmax) and index of force application technique (Drf). Two different high-speed video-based methods adding a time shift (ST-TS) or not (ST) were used and independently compared to the radar-derived method. ST and ST-TS showed significant mean differences (all p < 0.002) compared to radar-derived processing for all variables except for V0 (p = 0.26) and Vmax (p = 0.13) inferred from ST. In reference to radar-derived variables, ST-TS significantly induced larger lower values compared to radar of the main forward skating sprint determinants (Pmax, F0, RFmax and Drf) and moderate-to-large overestimation for velocity variables (V0 and Vmax). Correlations between ST or ST-TS and radar-derived methods ranged from trivial for velocity variables to very large for force and power variables. Consequently, practitioners must be aware that using such high-speed video-based methods would permit to determine mechanical variables at the cost of much lower accuracy and reliability than the radar-derived method.
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Affiliation(s)
- Jerome Perez
- French Institute of Sport (INSEP), Laboratory Sport, Expertise and Performance (EA 7370), Paris, France
- French Ice Hockey Federation, Cergy, France
| | - Gaël Guilhem
- French Institute of Sport (INSEP), Laboratory Sport, Expertise and Performance (EA 7370), Paris, France
| | - Franck Brocherie
- French Institute of Sport (INSEP), Laboratory Sport, Expertise and Performance (EA 7370), Paris, France
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50
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Emery CA, Warriyar Kv V, Black AM, Palacios-Derflingher L, Sick S, Debert C, Brooks BL, Yeates KO, Mrazik M, Lebrun C, Hagel BE, Dukelow S, Schneider KJ. Factors Associated With Clinical Recovery After Concussion in Youth Ice Hockey Players. Orthop J Sports Med 2021; 9:23259671211013370. [PMID: 34017881 PMCID: PMC8114271 DOI: 10.1177/23259671211013370] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/04/2021] [Accepted: 03/24/2021] [Indexed: 11/15/2022] Open
Abstract
Background: The identification of factors associated with clinical recovery in youth after sports-related concussion could improve prognostication regarding return to play (RTP). Purpose: To assess factors associated with clinical recovery after concussion in youth ice hockey players. Study Design: Cohort study; Level of evidence, 2. Methods: Participants were part of a larger longitudinal cohort study (the Safe to Play study; N = 3353). Included were 376 ice hockey players (age range, 11-17 years) from teams in Calgary and Edmonton, Canada, with 425 physician-diagnosed ice hockey–related concussions over 5 seasons (2013-2018). Any player with a suspected concussion was referred to a sports medicine physician for diagnosis, and a Sport Concussion Assessment Tool (SCAT) form was completed. Time to clinical recovery was based on time between concussion and physician clearance to RTP. Two accelerated failure time models were used to estimate days to RTP clearance: model 1 considered symptom severity according to the SCAT3/SCAT5 symptom evaluation score (range, 0-132 points), and model 2 considered responses to individual symptom evaluation items (eg, headache, neck pain, dizziness) of none/mild (0-2 points) versus moderate/severe (3-6 points). Other covariates were time to physician first visit (≤7 and >7 days), age group (11-12, 13-14, and 15-17 years), sex, league type (body checking and no body checking), tandem stance (modified Balance Error Scoring System result ≥4 errors out of 10), and number of previous concussions (0, 1, 2, and ≥3). Results: The complete case analysis (including players without missing covariates) included 329 players (366 diagnosed concussions). The median time to clinical recovery was 18 days. In model 1, longer time to first physician visit (>7 days) (time ratio [TR], 1.637 [95% confidence interval (CI), 1.331-1.996]) and greater symptom severity (TR, 1.016 [95% CI, 1.012-1.020]) were significant predictors of longer clinical recovery. In model 2, longer time to first physician visit (TR, 1.698 [95% CI, 1.399-2.062]), headache (moderate/severe) (TR, 1.319 [95% CI, 1.110-1.568]), and poorer tandem stance (TR, 1.249 [95% CI, 1.052-1.484]) were significant predictors of longer clinical recovery. Conclusion: Medical clearance to RTP was longer for players with >7 days to physician assessment, poorer tandem stance, greater symptom severity, and moderate/severe headache at first visit.
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Affiliation(s)
- Carolyn A Emery
- Sport Injury Prevention Research Centre, Faculty of Kinesiology, University of Calgary, Calgary, Alberta, Canada.,O'Brien Institute of Public Health, University of Calgary, Calgary, Alberta, Canada.,Alberta Children's Hospital Research Institute, University of Calgary, Calgary, Alberta, Canada.,Hotchkiss Brain Institute, University of Calgary, Calgary, Alberta, Canada.,Department of Community Health Sciences, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada.,Department of Pediatrics, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada
| | - Vineetha Warriyar Kv
- Sport Injury Prevention Research Centre, Faculty of Kinesiology, University of Calgary, Calgary, Alberta, Canada
| | - Amanda M Black
- Sport Injury Prevention Research Centre, Faculty of Kinesiology, University of Calgary, Calgary, Alberta, Canada.,Alberta Children's Hospital Research Institute, University of Calgary, Calgary, Alberta, Canada.,Hotchkiss Brain Institute, University of Calgary, Calgary, Alberta, Canada
| | - Luz Palacios-Derflingher
- Sport Injury Prevention Research Centre, Faculty of Kinesiology, University of Calgary, Calgary, Alberta, Canada.,Department of Community Health Sciences, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada
| | - Stacy Sick
- Sport Injury Prevention Research Centre, Faculty of Kinesiology, University of Calgary, Calgary, Alberta, Canada
| | - Chantel Debert
- Hotchkiss Brain Institute, University of Calgary, Calgary, Alberta, Canada.,Department of Clinical Neurosciences and Division of Physical Medicine and Rehabilitation, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada
| | - Brian L Brooks
- O'Brien Institute of Public Health, University of Calgary, Calgary, Alberta, Canada.,Alberta Children's Hospital Research Institute, University of Calgary, Calgary, Alberta, Canada.,Hotchkiss Brain Institute, University of Calgary, Calgary, Alberta, Canada.,Department of Pediatrics, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada.,Department of Psychology, Faculty of Arts, University of Calgary, Calgary, Alberta, Canada.,Neurosciences Program, Alberta Children's Hospital, Calgary, Alberta, Canada
| | - Keith Owen Yeates
- Alberta Children's Hospital Research Institute, University of Calgary, Calgary, Alberta, Canada.,Hotchkiss Brain Institute, University of Calgary, Calgary, Alberta, Canada.,Department of Pediatrics, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada.,Department of Clinical Neurosciences and Division of Physical Medicine and Rehabilitation, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada.,Department of Psychology, Faculty of Arts, University of Calgary, Calgary, Alberta, Canada
| | - Martin Mrazik
- Faculty of Education, University of Alberta, Edmonton, Alberta, Canada
| | - Constance Lebrun
- Family Medicine, Faculty of Medicine and Dentistry and Glen Sather Sport Medicine Clinic, University of Alberta, Edmonton, Alberta, Canada
| | - Brent E Hagel
- Sport Injury Prevention Research Centre, Faculty of Kinesiology, University of Calgary, Calgary, Alberta, Canada.,Alberta Children's Hospital Research Institute, University of Calgary, Calgary, Alberta, Canada.,Hotchkiss Brain Institute, University of Calgary, Calgary, Alberta, Canada.,Department of Community Health Sciences, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada.,Department of Pediatrics, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada
| | - Sean Dukelow
- Hotchkiss Brain Institute, University of Calgary, Calgary, Alberta, Canada.,Department of Clinical Neurosciences and Division of Physical Medicine and Rehabilitation, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada
| | - Kathryn J Schneider
- Sport Injury Prevention Research Centre, Faculty of Kinesiology, University of Calgary, Calgary, Alberta, Canada.,Alberta Children's Hospital Research Institute, University of Calgary, Calgary, Alberta, Canada.,Hotchkiss Brain Institute, University of Calgary, Calgary, Alberta, Canada.,Department of Clinical Neurosciences and Division of Physical Medicine and Rehabilitation, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada
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