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Shafik A, Bennett P, Rosenbloom C, Okholm Kryger K, Carmody S, Power J. Sport-related concussion attitudes and knowledge in elite English female footballers. SCI MED FOOTBALL 2024; 8:119-125. [PMID: 36541545 DOI: 10.1080/24733938.2022.2161613] [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] [Accepted: 12/17/2022] [Indexed: 12/24/2022]
Abstract
BACKGROUND Sport-related concussions (SRC) are more common and more severe in women's football than men's yet the knowledge and attitudes of SRC in the women's game are not well understood. The objective of this study was to assess the SRC knowledge and attitude in elite female footballers. METHODS An online questionnaire was sent to all registered players in the English Football Association Women's Super League (WSL) and Championship. Respondents completed an amended version of the Rosenbaum Concussion Knowledge and Attitudes Survey (RoCKAS). Concussion Knowledge Index (CKI) and Concussion Attitudes Index (CAI) scores were derived for all respondents. RESULTS One hundred and twenty-three players completed the survey with 111 fitting the inclusion criteria. The mean CKI score was 20.5 ± 2.3 and the mean CAI score was 63.3 ± 6.3. A weak positive correlation was shown between the CKI and CAI (r = 0.20; p = 0.03). Previous concussion education had a significant impact on increased knowledge (U = 1198; p = 0.04). There was no significant difference in concussion attitudes and knowledge between the WSL and Championship or in those with a previous concussion history and no previous concussion (p > 0.05). CONCLUSION Previous SRC education demonstrated an increased knowledge around concussion but a limited impact towards concussion attitudes. It is suggested that concussion education should be mandated across the professional game to enhance player welfare.
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Affiliation(s)
- Andrew Shafik
- Sport and Exercise Medicine, University of Leeds, Leeds, UK
- Millwall Football Club Medical Department, London, UK
| | - Pippa Bennett
- The Football Association, Technical Directorate, Burton-Upon-Trent, UK
| | - Craig Rosenbloom
- The Football Association, Technical Directorate, Burton-Upon-Trent, UK
- Sport and Exercise Medicine, Queen Mary University of London, London, UK
- Tottenham Hotspur Football Club Medical Department, London, UK
| | - Katrine Okholm Kryger
- Sport and Exercise Medicine, Queen Mary University of London, London, UK
- Health and Applied Science, St Mary's University Twickenham, London, UK
| | - Sean Carmody
- Department of Orthopaedic Surgery, Amsterdam Movement Sciences, Amsterdam UMC,University of Amsterdam, Amsterdam, The Netherlands
| | - Jonathan Power
- Sport and Exercise Medicine, University of Leeds, Leeds, UK
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2
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Shafik A, Lota KS, Mifsud D, Bennett P, Rosenbloom C, Okholm Kryger K, Carmody S, Power J. Sport-related concussion knowledge and attitudes of staff working in English elite women's football: a survey-based study. SCI MED FOOTBALL 2024:1-11. [PMID: 38661312 DOI: 10.1080/24733938.2024.2339497] [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] [Accepted: 03/27/2024] [Indexed: 04/26/2024]
Abstract
BACKGROUND Sport-related concussion (SRC) remains an injury of concern in sport, including football(soccer). There has been little investigation into SRC knowledge and attitudes of support staff working in the professional setting. METHODS An amended version of the Rosenbaum Concussion Knowledge and Attitudes Survey(RoCKAS) was distributed online to coaching staff, and medical and performance staff, working at clubs in the English Football Association Women's SuperLeague (WSL) and Championship. Completion of the survey generated two scores: concussion knowledge index (CKI) and concussion attitudes index (CAI). RESULTS Sixty-three completed surveys were returned. Eighteen respondents were coaching staff, and 45 were medical and performance staff. The median CKI in medical and performance staff was significantly greater than in coaching staff. There was no significant difference in CAIbetween coaching staff and medical and performance staff. There was no correlation between CKI and CAI across all staff. CONCLUSION Medical and performance staff working in elite women's football have greater knowledge of SRC than coaching staff. However, this does not always translate into safe behaviours on the field. Education should continue to be mandated across the professional game amongst support staff in order to maximise player welfare and enhance injury outcomes, whilst also reinforcing present SRC guidance.
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Affiliation(s)
- Andrew Shafik
- Department of Health, University of Bath, Bath, UK
- Sport and Exercise Medicine, University of Leeds, Leeds, UK
| | - Kabir Singh Lota
- Centre for Sports and Exercise Medicine, Queen Mary, University of London, London, UK
| | - Daniela Mifsud
- Faculty of Life Sciences and Education, University of South Wales, Pontypridd, Wales
| | - Pippa Bennett
- Medical Department, The Football Association, Needwood, Burton-Upon-Trent, UK
| | - Craig Rosenbloom
- Centre for Sports and Exercise Medicine, Queen Mary, University of London, London, UK
| | - Katrine Okholm Kryger
- Centre for Sports and Exercise Medicine, Queen Mary, University of London, London, UK
- Faculty of Sport, Health and Applied Science, St Mary's University Twickenham, London, UK
| | - Sean Carmody
- Department of Orthopaedic Surgery, Amsterdam Movement Sciences, Amsterdam UMC, University of Amsterdam, Amsterdam, The Netherlands
| | - Jonathan Power
- Sport and Exercise Medicine, University of Leeds, Leeds, UK
- Medical Department, Liverpool Football Club, Liverpool, UK
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3
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Rosenbloom C, Okholm Kryger K, Carmody S, Broman D. Non-steroidal anti-inflammatory drugs in football - a "Keeping SCORE" approach to judicious use. SCI MED FOOTBALL 2024; 8:1-5. [PMID: 36271815 DOI: 10.1080/24733938.2022.2140189] [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] [Accepted: 10/20/2022] [Indexed: 10/31/2022]
Abstract
Non-steroidal anti-inflammatory drug (NSAID) use in elite sport is high, with football being no exception. Increased awareness of significant adverse drug reactions from published research and retired players commentary in the media have made the topic mainstream. Despite this increased awareness, usage rates show no sign of significantly reducing. Footballers, like all elite athletes are focused on maximising their performance and potential - even at the expense of their long-term health. An educational intervention prior to the 2010 FIFA Men's World Cup aimed at reducing rates was ineffective, suggesting that education alone is not the answer. Our author group propose a 'safer use' rather than 'no use' of NSAIDs in football. A 'Keeping SCORE' approach is suggested, designed as a prescribing aid. The approach guides medical staff towards focusing on Safety checks, Clinical indication/judgement, Open dialogue, Recording, and Evaluation.
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Affiliation(s)
- Craig Rosenbloom
- Sport and Exercise Medicine Department, Queen Mary University of London, London, UK
- Medical Department, Tottenham Hotspur Football Club, London, UK
- The Football Association, Technical Directorate, Burton-upon-Trent, UK
| | - Katrine Okholm Kryger
- Sport and Exercise Medicine Department, Queen Mary University of London, London, UK
- Faculty of Sport, Health and Applied Science, St Mary's University Twickenham, Twickenham, UK
| | - Sean Carmody
- Department of Orthopaedic Surgery, Amsterdam Movement Sciences, Amsterdam UMC, University of Amsterdam, Amsterdam, The Netherlands
| | - Daniel Broman
- The Football Association, Technical Directorate, Burton-upon-Trent, UK
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4
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Gredin NV, Okholm Kryger K, McCall A, Solstad BE, Torstveit MK, Massey A, Ivarsson A. Psychology research in women's soccer: a scoping review. SCI MED FOOTBALL 2023:1-11. [PMID: 38010624 DOI: 10.1080/24733938.2023.2285962] [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: 08/14/2023] [Accepted: 11/14/2023] [Indexed: 11/29/2023]
Abstract
Previous research suggests that psychological factors play an important role in trying to explain and predict the participation, performance, and health of player and practitioners in soccer. However, most previous works have focused on specific research questions and included samples from male populations. As part of a larger Fédération Internationale de Football Association (FIFA) project aiming to steer women's soccer research, our purpose with this scoping review was to give an overview of the current state of psychology-related research within women's soccer. We searched five electronic databases up to April 2023, from which 280 original peer-reviewed articles met the inclusion criteria. Included records were inductively coded into 75 specific research topics and nine broader research categories. Population characteristics within each topic and category, and overall publication trends, were identified. The results revealed a growth in research attention, with notable increases in publication rates around the international competitions years, over the last two decades. While a notable number of abstracts did not report sufficient details about population age and/or playing levels, senior elite players were identified as the most common population studied. Most studies examined several topics from different research categories, with research focusing on emotions, moods and/or environmental factors, and the specific the topics of anxiety, stress, and coach behavior, receiving most research attention. Our study provides an informative mapping of all psychology-related research activity within women's soccer, which will enhance researchers' understanding of the current quantity of literature within this complex, heterogeneous, and growing area of research.
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Affiliation(s)
- N Viktor Gredin
- School of Health and Welfare, Halmstad University, Halmstad, Sweden
| | - Katrine Okholm Kryger
- Faculty of Sport, Applied Health and Performance Science, St Mary´s University, Twickenham, London, UK
- FIFA Medical, Federation Internationale de Football Association, Zurich, Switzerland
| | - Alan McCall
- FIFA Medical, Federation Internationale de Football Association, Zurich, Switzerland
- School of Applied Sciences, Edinburgh Napier University, Edinburgh, UK
| | - Bård E Solstad
- Department of Sport Science and Physical Education, University of Agder, Kristiansand, Norway
| | - Monica K Torstveit
- Department of Sport Science and Physical Education, University of Agder, Kristiansand, Norway
| | - Andrew Massey
- FIFA Medical, Federation Internationale de Football Association, Zurich, Switzerland
| | - Andreas Ivarsson
- School of Health and Welfare, Halmstad University, Halmstad, Sweden
- Department of Sport Science and Physical Education, University of Agder, Kristiansand, Norway
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5
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Hoey C, Wang A, Raymond RJ, Ulagenthian A, Okholm Kryger K. Foot morphological variations between different ethnicities and sex: a systematic review. Footwear Science 2022. [DOI: 10.1080/19424280.2022.2148294] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Caoimhe Hoey
- Faculty of Orthopaedics, Bon Secours Hospital Galway, Galway, Ireland
| | - Albert Wang
- William Harvey Research Institute, Bart’s and the London School of Medicine and Dentistry, Queen Mary University of London, London, UK
| | | | - Ashwin Ulagenthian
- The Queen’s Medical Research Institute, University of Edinburgh, Edinburgh, UK
| | - Katrine Okholm Kryger
- The Queen’s Medical Research Institute, University of Edinburgh, Edinburgh, UK
- Faculty of Sport, Health and Applied Science, St Mary’s University, London, UK
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6
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Abstract
AIM This study aims to scope available peer-reviewed literature published in a FIFA language to understand the current quantity of research on women's football. METHODS Five databases were searched on the 15/12/2019. Studies were included when containing original research published in a peer-reviewed journal around female competitive football of any level, any age and on any subject. Author, journal, title and abstract of all included studies were scoped. Population assessed number of participants, level of play, age level of football and publication theme(s) were extracted. RESULTS A total of 1,634 articles were scoped. The oldest publication dated back to 1939, whilst a total of 202 studies were gathered from 2019. The publication theme most frequently researched was sports medicine (N = 521) followed by strength and conditioning (N = 331) and sociology (N = 299). The majority of studies has focussed on elite (N = 442), senior (N = 977) players. CONCLUSION A continuous growth in research attention has been seen. However, the numbers are not comparable to current research output levels in men's football. This study represents an essential first step in a larger 'research agenda-setting' project to determine research priorities for women's football during the next 10 years.
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Affiliation(s)
- Katrine Okholm Kryger
- Faculty of Sport, Health and Applied Science St Mary's University, Twickenham, London, UK.,Sports and Exercise Medicine, Barts and The London School of Medicine and Dentistry, Queen Mary University of London, London, UK
| | - Albert Wang
- Sports and Exercise Medicine, Barts and The London School of Medicine and Dentistry, Queen Mary University of London, London, UK
| | - Ritan Mehta
- The Football Association, St George's Park, Newborough Road, Needwood, Burton-Upon-Trent UK
| | - Franco M Impellizzeri
- Sport and Exercise Discipline Group Faculty of Health University of Technology Sydney, Sydney, Australia
| | - Andrew Massey
- Fédération Internationale de Football Association, Zurich, Switzerland
| | - Alan McCall
- Arsenal Performance and Research Team, Arsenal Football Club, Arsenal Football Club.,School of Applied Sport & Exercise Sciences, Edinburgh Napier University, Edinburgh, UK
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7
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Read P, Mehta R, Rosenbloom C, Jobson E, Okholm Kryger K. Elite female football players' perception of the impact of their menstrual cycle stages on their football performance. A semi-structured interview-based study. SCI MED FOOTBALL 2022; 6:616-625. [PMID: 36540911 DOI: 10.1080/24733938.2021.2020330] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [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: 01/11/2023]
Abstract
OBJECTIVES This study assesses how female footballers perceive how their menstrual cycle impacts their physical and psychological performance, informing future research and intervention. METHODS Semi-structured interviews, developed using piloting and peer review took place with fifteen elite female footballers from two English WSL clubs (age: 25.2 [18-33]). Data was audio recorded, transcribed verbatim, and analysed thematically using NVivo. RESULTS All players (100%) perceive their menstrual cycle to negatively impact performance. Analysing 27,438 words of data revealed five themes: A) symptoms, B) preparation, C) performance, D) recovery, and E) management. Over half (53%) of players experienced decreased appetite and sleep quality prior to performance during menstruation. Competitive performance was perceived to be most negatively impacted during menses (54 references) following by the pre-menstrual stage (23 references). During menstruation, the most impacted physical performance indicators were power (93%) and fatigue (87%). Psychologically, confidence, focus, and reaction to criticism were commonly affected (66.7%). Players reported missing training (13.3%) and matches (13.3%) due to severity of impact. Recovery was affected during the pre-menstrual (26.7%) and menstrual (66.7) stages. Players self-manage symptoms using over the counter (66.7%) and prescription (26.7%) medication, some prophylactically prior to competition (46.7%). CONCLUSIONS This first attempt to ascertain player perception in football exposes a clear negative impact on performance. The complex interplay of biopsychosocial and logistical factors, lack of awareness and education highlight the need for further research. Intervention is necessary and immediate initiation would be prudent, starting with simple measures such as basic self-management advice, education, and provision of sanitary products.
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Affiliation(s)
- Phoebe Read
- Sport and Exercise Medicine, Queen Mary University of London, Sport and Exercise Medicine, London, UK.,Faculty of Life Sciences and Medicine, King's College London, London, UK
| | - Ritan Mehta
- The Football Association, Burton-Upon-Trent, UK
| | - Craig Rosenbloom
- Sport and Exercise Medicine, Queen Mary University of London, Sport and Exercise Medicine, London, UK.,The Football Association, Burton-Upon-Trent, UK.,Tottenham Hotspur Football Club, London, UK
| | - Elena Jobson
- Sport and Exercise Medicine, Queen Mary University of London, Sport and Exercise Medicine, London, UK.,West Ham United Football Club, London, UK
| | - Katrine Okholm Kryger
- Sport and Exercise Medicine, Queen Mary University of London, Sport and Exercise Medicine, London, UK.,Department of Sports Science and Clinical Biomechanics, University of Southern Denmark, Odense, Denmark.,Faculty of Sport, Health and Applied Science, St Mary's University Twickenham, London, UK
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8
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Carmody S, Rajeswaran G, Mitchell A, Kryger KO, Ahmad I, Gill M, Rushton A. Lumbar spine MRI findings in asymptomatic elite male academy footballers: a case series. BMC Sports Sci Med Rehabil 2022; 14:184. [PMID: 36280886 PMCID: PMC9590204 DOI: 10.1186/s13102-022-00576-1] [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: 03/15/2022] [Accepted: 09/15/2022] [Indexed: 11/20/2022]
Abstract
Background Understanding common MRI findings may allow clinicians to appreciate the sport-specific effects on the lumbar spine, and to discern clinically significant pathology. Prevalence data regarding radiological abnormalities seen during the surveillance of asymptomatic elite footballers is, therefore, important to help understand injury mechanisms and to prevent associated injuries. The purpose of this study was to evaluate the magnetic resonance imaging (MRI) findings in the lumbar spines of asymptomatic elite male adolescent footballers. Methods A prospective case-series study was carried out. MRI was performed using a 3T Siemens Prisma scanner including a 3D VIBE sequence in 18 asymptomatic male elite adolescent footballers recruited from a professional academy in England (mean age 17.8, range 16.9–18.6 years). The images were independently reported by two consultant musculoskeletal radiologists to achieve consensus opinion. Standardised classification criteria were used to assess and report abnormalities descriptively. Results Fifteen players (15/18, 83%) showed ≥1 abnormalities, included facet degeneration, synovial cysts, disc degeneration, disc herniation, and pars injury. One player (1/18, 6%) had mild (Grade 1) facet joint arthropathy at L4/L5 and 3/18 (16.7%) showing evidence of bilateral facet joint effusions. Three synovial cysts were identified in 2/18 players (11%), 4/18 players (22%) presented asymptomatic pars injuries, with 4 showing a grade 2 subtotal stress fracture and 1 player a grade 4 chronic stress fracture seen on 3D VIBE sequencing. Disc degeneration at one or more levels was demonstrated in 7/18 players (38%). Disc herniation was present in 5/18 players (27%). Conclusion A range of unsuspected findings on MRI of the lumbar spine are common in elite adolescent footballers.
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Affiliation(s)
- Sean Carmody
- grid.6572.60000 0004 1936 7486School of Sport, Exercise and Rehabilitation Sciences, University of Birmingham, Birmingham, UK ,grid.7177.60000000084992262Amsterdam UMC location, University of Amsterdam, Department of Orthopedic Surgery and Sports Medicine, Meibergdreef 9, Amsterdam, The Netherlands
| | | | | | - Katrine Okholm Kryger
- grid.417907.c0000 0004 5903 394XFaculty of Sport, Allied Health and Performance Science, St Mary’s University, Twickenham, London, UK
| | - Imtiaz Ahmad
- Medical Department, Queens Park Rangers Football and Athletic Club, London, UK
| | - Munraj Gill
- grid.411616.50000 0004 0400 7277Croydon University Hospital, Croydon, UK
| | - Alison Rushton
- grid.6572.60000 0004 1936 7486School of Sport, Exercise and Rehabilitation Sciences, University of Birmingham, Birmingham, UK ,grid.6572.60000 0004 1936 7486Centre of Precision Rehabilitation for Spinal Pain, School of Sport, Exercise and Rehabilitation Sciences, University of Birmingham, Birmingham, UK
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9
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Pinel CJJ, Mehta R, Okholm Kryger K. The impact and experienced barriers menstruation present to football participation in amateur female footballers. J Sports Sci 2022; 40:1950-1963. [PMID: 36099429 DOI: 10.1080/02640414.2022.2122328] [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: 10/14/2022]
Abstract
This study (1) assessed the impact different stages of the menstrual cycle has on experienced football performance and exercise ability (2) identified the experienced barriers to football participation menstruation presents in amateur women footballers. An online survey was used. The inclusion criteria were non-professional, women currently experiencing regular menstrual cycles, ≥18 years, ≥60 min football/week in the UK. Descriptive statistics were performed on quantitative data and thematic analysis of the open-ended questions. 127 responses were included. Most of the respondents were aged between 18-25 (89%), Caucasian (83%) and competing in Universities Leagues (69%). Menstruation was reported to "never" limit football playing in 17%, "sometimes" in 47%, "rarely" in 25% and "always" in 10% of respondents. The majority (73%) reported one or more barriers menstruation present to football participation. Following thematic analysis, 165 meaning units, 23 themes and seven categories were identified. Confidence and aerobic capacity/endurance were identified to be the aspects most negatively impacted during the pre-menstrual and menstrual stages. Confidence is likely to be negatively impacted due to the barriers identified. Thus, recommendations on how to reduce these through education of players and involved staff, at the club and the FA level have been made.
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Affiliation(s)
- Cecile J J Pinel
- Sport and Exercise Medicine, Queen Mary University of London, London, UK
| | - Ritan Mehta
- The Football Association, Needwood, Burton-Upon-Trent, UK
| | - Katrine Okholm Kryger
- Sport and Exercise Medicine, Queen Mary University of London, London, UK.,Faculty of Sport, Health and Applied Science, St Mary's University, London, UK
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10
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Nassis GP, Brito J, Tomás R, Heiner-Møller K, Harder P, Kryger KO, Krustrup P. Elite women's football: Evolution and challenges for the years ahead. Scand J Med Sci Sports 2021; 32 Suppl 1:7-11. [PMID: 34882847 DOI: 10.1111/sms.14094] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2021] [Accepted: 11/08/2021] [Indexed: 11/27/2022]
Affiliation(s)
- George P Nassis
- Physical Education Department, College of Education (CEDU), United Arab Emirates University, Al Ain, Abu Dhabi, United Arab Emirates.,Department of Sports Science and Clinical Biomechanics, Faculty of Health Sciences, SDU Sport and Health Sciences Cluster (SHSC), University of Southern Denmark, Odense, Denmark
| | - João Brito
- Portugal Football School, Portuguese Football Federation, Oeiras, Portugal
| | - Rita Tomás
- Portugal Football School, Portuguese Football Federation, Oeiras, Portugal
| | | | | | - Katrine Okholm Kryger
- Department of Sports Science and Clinical Biomechanics, Faculty of Health Sciences, SDU Sport and Health Sciences Cluster (SHSC), University of Southern Denmark, Odense, Denmark.,Faculty of Sport, Allied Health and Performance Science, St Mary's University, Twickenham, London, UK.,Sports and Exercise Medicine, Barts and The London School of Medicine and Dentistry, Queen Mary University of London, London, UK
| | - Peter Krustrup
- Department of Sports Science and Clinical Biomechanics, Faculty of Health Sciences, SDU Sport and Health Sciences Cluster (SHSC), University of Southern Denmark, Odense, Denmark.,Danish Institute for Advanced Study (DIAS), University of Southern Denmark, Odense, Denmark.,College of Sport Health Sciences, University of Exeter, Exeter, UK
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11
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Rosenbloom C, Chatterjee R, Chu W, Broman D, Okholm Kryger K. Sport-related concussion return-to-play practices of medical team staff in elite football in the United Kingdom. SCI MED FOOTBALL 2021; 6:317-324. [DOI: 10.1080/24733938.2021.1983921] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
- Craig Rosenbloom
- The Football Association, Technical Directorate, Burton-upon-Trent, UK
- Sport and Exercise Medicine, Queen Mary University of London, London, UK
| | - Robin Chatterjee
- Institute of Sport, Exercise and Health, London, UK
- British Association of Sport and Exercise Medicine, Doncaster, UK
| | - Wing Chu
- Vita Health Group, London, UK
- Freedom Clinics, London, UK
| | - Daniel Broman
- The Football Association, Technical Directorate, Burton-upon-Trent, UK
- Isokinetic Medical Group, London, UK
| | - Katrine Okholm Kryger
- Sport and Exercise Medicine, Queen Mary University of London, London, UK
- Health and Applied Science, St Mary’s University, London, UK
- Department of Sports Science and Clinical Biomechanics, University of Southern Denmark, Odense, Denmark
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12
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Okholm Kryger K, Mutamba K, Mitchell S, Miller SC, Forrester S. Physical performance and perception of foot discomfort during a soccer-specific match simulation. A comparison of football boots. J Sports Sci 2021; 39:1046-1054. [PMID: 33432889 DOI: 10.1080/02640414.2020.1856461] [Citation(s) in RCA: 3] [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] [Subscribe] [Scholar Register] [Accepted: 11/23/2020] [Indexed: 10/22/2022]
Abstract
Football boots are marketed with emphasis on a single key performance characteristic (e.g. speed). Little is known on how design parameters impact players' performance. This study investigated the impact of boot design on performance maintenance and perceived foot comfort during a 90-minute match simulation drill. Eleven male university football players tested two commercially available "sprint boots" known to generate significantly different plantar pressures (high=Boot H and low=Boot L) . Players completed a modified Soccer-specific Aerobic Field Test on a 3G pitch. Heart rate, rated perceived exertion and perceived foot discomfort were assessed for each 15-min interval. Power generation was assessed pre- and post-match simulation. A significantly higher mean heart rate was seen for Boot L in the 60th-75th and 75th-90th minute intervals (P = 0.017, P = 0.012 respectively). Perceived exertion did not differ between boots (P ≥ 0.302). Power generation significantly decreased in Boot H between pre- and post-match (P = 0.042). Both boots increased discomfort with significantly more plantar discomfort felt in the last 30 min in Boot H (75th min: P = 0.037; 90th min: P = 0.048). The results imply that a comfortable boot design may improve maintenance of performance during match-play.
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Affiliation(s)
- Katrine Okholm Kryger
- Faculty of Sport, Health and Applied Science, St Mary's University, London, UK
- Sport and Exercise Medicine, Queen Mary University of London, London, UK
- Department of Sports Science and Clinical Biomechanics, University of Southern Denmark, Odense, Denmark
- School of Mechanical, Electrical and Manufacturing Engineering, Loughborough University, Loughborough, UK
- Sports Technology Institute, Loughborough University, Loughborough, UK
| | - Kumbirai Mutamba
- Sports Technology Institute, Loughborough University, Loughborough, UK
| | - Séan Mitchell
- Sports Technology Institute, Loughborough University, Loughborough, UK
| | | | - Steph Forrester
- Sports Technology Institute, Loughborough University, Loughborough, UK
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13
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Angioi M, Hodgson K, Okholm Kryger K. An Updated Systematic Review of Turnout Position Assessment Protocols Used in Dance Medicine and Science Research. J Dance Med Sci 2021; 25:55-71. [PMID: 33706856 DOI: 10.12678/1089-313x.031521h] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Turnout, or external rotation of the lower limbs, is an integral part of classical ballet technique. Contributions of lower limb structures to turnout can be separated into HER (hip external rotation) and NHCTO (non-hip contributions to turnout). This study aimed to review systematically methods used to measure turnout in dance medicine and science research, thereby updating the literature since the Champion and Chatfield review of 2008. CINAHL, EMBASE, PubMed, and Web of Science were searched in January 2018 by two independent reviewers. Peer-reviewed studies measuring turnout in dance were included, except those published prior to March 23, 2006, as that was the last date of publication included in the previous review. Abstracts, theses, and editorials were excluded. From each study, study design, population (sample size, sex, age, genre of dance, and level of training), details of the protocol used, and result of turnout measurement were extracted, as well as reliability data. All included studies were assessed for risk of bias, using either Newcastle-Ottawa scale, AXIS tool, or PEDro scale as appropriate for each study design. A total of 41 studies met the inclusion criteria. Twenty-eight studies measured HER, nine measured NCHTO, and 22 measured total turnout (TTO). An increased number of studies investigated TTO (N = 22; N = 4 passive TTO) and NHCTO (N = 9) since 2006. All studies scored above half the points attainable from their respective tools. Results suggest HER remains the most common protocol for measuring turnout (N = 28), despite the fact it disregards input from structures below the hip. It is concluded that researchers should focus on quality of reporting of protocols to ensure repeatability and facilitate comparison of results. Future studies should include absolute reliability and validity testing of all currently used protocols so that standardization can be fully achieved.
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Affiliation(s)
- Manuela Angioi
- Sports and Exercise Medicine; William Harvey Research Institute, Queen Mary University of London, United Kingdom
| | - Karis Hodgson
- Faculty of Medicine; University of Southampton, United Kingdom
| | - Katrine Okholm Kryger
- Sports and Exercise Medicine; William Harvey Research Institute, Queen Mary University of London, United Kingdom
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Rosenbloom C, Broman D, Chu W, Chatterjee R, Okholm Kryger K. Sport-related concussion practices of medical team staff in elite football in the United Kingdom, a pilot study. SCI MED FOOTBALL 2021; 6:127-135. [DOI: 10.1080/24733938.2021.1892174] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Affiliation(s)
- Craig Rosenbloom
- The Football Association, Technical Directorate, Burton-upon-Trent, UK
- Queen Mary University of London, Sport and Exercise Medicine, London, UK
| | | | - Wing Chu
- Imperial College Healthcare NHS Trust, St Mary’s Hospital, London, UK
| | - Robin Chatterjee
- Institute of Sport, Exercise and Health, London, UK
- British Association of Sport and Exercise Medicine, 3 Jetstream Dr, Doncaster, UK
| | - Katrine Okholm Kryger
- Queen Mary University of London, Sport and Exercise Medicine, London, UK
- St Mary’s University, Faculty of Sport, Health and Applied Science, London, UK
- Department of Sports Science and Clinical Biomechanics, University of Southern Denmark, Odense, Denmark
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15
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Husain E, Angioi M, Mehta R, Barnett DN, Okholm Kryger K. A systematic review of plantar pressure values obtained from male and female football and the test methodologies applied. Footwear Science 2020. [DOI: 10.1080/19424280.2020.1791977] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
- Elham Husain
- Sports and Exercise Medicine, Queen Mary University of London, London, UK
| | - Manuela Angioi
- Sports and Exercise Medicine, Queen Mary University of London, London, UK
| | - Ritan Mehta
- The English Football Association, St. George’s Park, Burton-Upon-Trent, UK
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Wang A, Healy J, Hyett N, Berthelot G, Okholm Kryger K. A systematic review on methodological variation in acute:chronic workload research in elite male football players. SCI MED FOOTBALL 2020; 5:18-34. [DOI: 10.1080/24733938.2020.1765007] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Affiliation(s)
- Albert Wang
- Sports and Exercise Medicine, School of Medicine and Dentistry, Queen Mary University of London, UK
| | - Jack Healy
- Sports and Exercise Medicine, School of Medicine and Dentistry, Queen Mary University of London, UK
| | - Nicholas Hyett
- Sports and Exercise Medicine, School of Medicine and Dentistry, Queen Mary University of London, UK
| | - Geoffroy Berthelot
- , Institut National du Sport, de l'Expertise et de la Performance, Paris, France
- Research Laboratory for Interdisciplinary Studies, Paris, France
| | - Katrine Okholm Kryger
- Sports and Exercise Medicine, School of Medicine and Dentistry, Queen Mary University of London, UK
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Okholm Kryger K, Mitchell S, Zhou D, Forrester S. The effect of football boot upper padding on dribbling and passing performance using a test–retest validated protocol. Sports Eng 2018. [DOI: 10.1007/s12283-018-0284-z] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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18
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Abstract
Comfort has been shown to be the most desired football boot feature by players. Previous studies have shown discomfort to be related to increased plantar pressures for running shoes which, in some foot regions, has been suggested to be a causative factor in overuse injuries. This study examined the correlation between subjective comfort data and objective plantar pressure for football boots during football-specific drills. Eight male university football players were tested. Plantar pressure data were collected during four football-specific movements for each of three different football boots. The global and local peak pressures based on a nine-sectioned foot map were compared to subjective comfort measures recorded using a visual analogue scale for global discomfort and a discomfort foot map for local discomfort. A weak (rs = -0.126) yet significant (P < 0.05) correlation was shown between the peak plantar pressure experienced and the visual analogue scale rated comfort. The model only significantly predicted (P > 0.001) the outcome for two (medial and lateral forefoot) of the nine foot regions. Subjective comfort data is therefore not a reliable measure of increased plantar pressures for any foot region. The use of plantar pressure measures is therefore needed to optimise injury prevention when designing studded footwear.
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Affiliation(s)
- Katrine Okholm Kryger
- a Wolfson School of Mechanical and Manufacturing Engineering , Loughborough University , Loughborough , UK.,b Sports Technology Institute , Loughborough University , Loughborough , UK
| | - Vicky Jarratt
- a Wolfson School of Mechanical and Manufacturing Engineering , Loughborough University , Loughborough , UK
| | - Séan Mitchell
- a Wolfson School of Mechanical and Manufacturing Engineering , Loughborough University , Loughborough , UK.,b Sports Technology Institute , Loughborough University , Loughborough , UK
| | - Steph Forrester
- a Wolfson School of Mechanical and Manufacturing Engineering , Loughborough University , Loughborough , UK.,b Sports Technology Institute , Loughborough University , Loughborough , UK
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Okholm Kryger K, Dor F, Guillaume M, Haida A, Noirez P, Montalvan B, Toussaint JF. Medical reasons behind player departures from male and female professional tennis competitions. Am J Sports Med 2015; 43:34-40. [PMID: 25398243 DOI: 10.1177/0363546514552996] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [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: 01/31/2023]
Abstract
BACKGROUND The number of retirements, withdrawals, and "lucky losers" (the replacement of a player who withdraws before the start of the tournament by a losing player from the qualifying round) from professional tennis tournaments has increased, but the reasons behind such departures have not yet been analyzed. An official consensus statement has been conducted to allow a general categorization of injuries in tennis. PURPOSE To determine the reasons for departure and injury rates in professional tennis. STUDY DESIGN Descriptive epidemiology study. METHODS All reasons for departures were collected from official Association of Tennis Professionals (ATP) and Women's Tennis Association (WTA) web pages. All tournaments apart from the 4 major competitions (the Australian Open, French Open, Wimbledon, and US Open) were included for the period 2001-2012 for men and women. Personal data, tournament information, surface, match setting, date, and reason were obtained for each departure scenario. RESULTS Variations in departure and injury rates were seen throughout the season. Women left and were injured significantly more than men. Women mainly left because of thigh injuries, whereas men left mainly because of back injuries. Playing surface only had an influence on the risk of lower back injuries. Only women's departures were affected by the tournament round. CONCLUSION A high number of departures from tournaments have occurred during the past 10 years on the ATP and WTA circuits. Injuries were the main reasons of these departures, regardless of the type of departure and player sex. The back and thigh were the main locations of injuries for men and women, respectively.
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Affiliation(s)
- Katrine Okholm Kryger
- Institute for Research in Medicine and Epidemiology of Sports (IRMES), National Institute of Sport and Physical Education (INSEP), Paris, France
| | - Frédéric Dor
- Institute for Research in Medicine and Epidemiology of Sports (IRMES), National Institute of Sport and Physical Education (INSEP), Paris, France
| | - Marion Guillaume
- Institute for Research in Medicine and Epidemiology of Sports (IRMES), National Institute of Sport and Physical Education (INSEP), Paris, France
| | - Amal Haida
- Institute for Research in Medicine and Epidemiology of Sports (IRMES), National Institute of Sport and Physical Education (INSEP), Paris, France
| | - Philippe Noirez
- Institute for Research in Medicine and Epidemiology of Sports (IRMES), National Institute of Sport and Physical Education (INSEP), Paris, France
| | | | - Jean-François Toussaint
- Institute for Research in Medicine and Epidemiology of Sports (IRMES), National Institute of Sport and Physical Education (INSEP), Paris, France
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