| 1. |
- Asker, Martin, et al.
(författare)
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Female adolescent elite handball players are more susceptible to shoulder problems than their male counterparts
- 2018
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Ingår i: Knee Surgery, Sports Traumatology, Arthroscopy. - : SPRINGER. - 0942-2056 .- 1433-7347. ; 26:7, s. 1892-1900
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Tidskriftsartikel (refereegranskat)abstract
- Shoulder problems are frequent among senior elite handball players. The objective of this study was to assess the prevalence of shoulder problems among adolescent elite handball players and to investigate potential differences in gender, school grade, playing position and playing level. During the 2014 and 2015 pre-season periods, 471 players (age 15-18 years, 54% female) completed a comprehensive baseline questionnaire regarding history of any shoulder pain and shoulder problems experienced during the past season. The players were monitored weekly for one competition season (September-April) regarding shoulder problems and the amount of match and training. Generalised linear models with a binomial link function were used to calculate a prevalence ratio (PR) with 95% confidence interval (CI) to compare the subgroups of players. In total, 110 players (23%) reported having substantial shoulder problems (defined as moderate/severe reduction in training volume, or moderate/severe reduction in performance, or complete inability to participate) at some point during the follow-up season, of which almost half reported complete inability to participate. Of those players reporting substantial problems, 43% (95% CI 39-48) did so for at least 3 consecutive weeks during the season. The prevalence was significantly higher in female players (PR 1.46, 95% 1.04-2.06) and in backcourt players (PR 1.58, 95% CI 1.08-2.32), but no differences were found for school grade (PR 1.21 95% CI 0.88-1.67) or playing level (PR 1.09 95% CI 0.76-1.56). The prevalence of substantial shoulder problems in adolescent elite handball players is high, especially among females, and this warrants further studies on risk factors for shoulder injury and the development of prevention strategies in handball players already before the age of 15. These findings also highlight the importance of introducing a clinical monitoring programme on a routine basis and improving the medical support, taking gender-related aspects into consideration, at handball-profiled secondary schools. II.
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| 2. |
- Bengtsson, Håkan, 1985-, et al.
(författare)
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Few training sessions between return to play and first match appearance are associated with an increased propensity for injury: a prospective cohort study of male professional football players during 16 consecutive seasons
- 2020
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Ingår i: British Journal of Sports Medicine. - : BMJ Publishing Group Ltd. - 0306-3674 .- 1473-0480. ; 54:7, s. 427-432
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Tidskriftsartikel (refereegranskat)abstract
- Background It has been hypothesised that injury risk after return to play following an injury absence is influenced by the amount of training completed before return to competition. Aim To analyse if the number of completed training sessions between return to play and the first subsequent match appearance was associated with the odds of injury in men's professional football. Methods From a cohort study, including 303 637 individual matches, 4805 first match appearances after return to play following moderate to severe injuries (≥8 days absence) were analysed. Rate ratios (RRs) were used to compare injury rates in the first match appearances with the average seasonal match injury rate. Odds ratios (ORs) were used to analyse associations between the number of completed training sessions and general (all injuries), muscle, and non-muscle injury odds. Results Injury rate in the first match after return to play was increased by 87% compared with the average seasonal match injury rate (46.9 vs 25.0/1000 hours, RR=1.87; 95% CI 1.64 to 2.14). The odds of injury dropped 7% with each training session before the first match (OR 0.93; 95% CI 0.87 to 0.98). The same association was found for muscle injuries (OR 0.87; 95% CI 0.79 to 0.95) but not for non-muscle injuries (OR 0.99; 95% CI 0.91 to 1.07). Conclusions Injury rates in the first match after injury are higher than the average seasonal match injury rate, but the propensity for player injury is decreased when players complete more training sessions before their first match.
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| 3. |
- Bengtsson, Håkan, 1985-
(författare)
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Match-related risk factors for injury in male professional football
- 2017
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Doktorsavhandling (övrigt vetenskapligt/konstnärligt)abstract
- Background: Injuries are common in professional football, especially during matches, and they cause suffering for players, in both the short and the long term. It is therefore important to try to prevent these injuries. One of the most important steps in injury prevention is to fully understand the different risk factors that contribute to these injuries. Aim: The aim of this thesis was therefore to investigate several match-related factors that have been suggested to be important for the risk of sustaining injuries during professional football matches. Methods: The thesis consists of four papers, and all analyses are based on data gathered during a large-scale prospective cohort study that has been running since 2001: the UEFA Elite Club Injury Study. Medical teams from 61 clubs have been involved in this study, and they have prospectively gathered data about football exposure and injuries for their first team players.Associations between the following factors and injuries have been analysed: • Match characteristics in terms of match venue, match result, and competition • Match congestion, both short and long term, and at team and individual player level • Number of completed training sessions between return to sport after an injury and the first match exposure Results: All match characteristics studied were shown to be associated with injury rates, with higher injury rates during home matches compared with away matches, in matches that were lost or drawn compared with matches won, and in domestic league and Champions League matches compared with Europa League and other cup matches. It was also shown that injury rates, muscle injury rates in particular, were higher if the recovery time between matches was short. This association between match congestion and injury rates was shown when match congestion was considered at both team and individual player level. Finally, the odds of injury during the first match exposure after a period of absence due to injury was found to be higher if players had completed few training sessions between return to sport and their first match. Conclusion: There are several match-related risk factors that contribute to the injury rate during professional football matches. A better understanding of these risk factors will help teams to make better estimations of the injury risks to which players are exposed in different situations (e.g. during periods of match congestion and when players return to sport after an injury). Knowledge about risk factors will also offer the possibility of reducing the number of injuries for football teams by addressing them with appropriate measures.
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| 4. |
- D´Hooghe, Pieter, et al.
(författare)
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Anterior ankle impingment syndrome is less frequent, but associated with a longer absence and higher re-injury rate compared to posterior syndrome : a prospective cohort study of 6754 male professional soccer players
- 2022
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Ingår i: Knee Surgery, Sports Traumatology, Arthroscopy. - : Springer. - 0942-2056 .- 1433-7347. ; 30, s. 4262-4269
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Tidskriftsartikel (refereegranskat)abstract
- Purpose To study the epidemiology and return to play characteristics of anterior and posterior ankle impingement syndromes (AAIS and PAIS) over 18 consecutive seasons in male professional soccer players. Methods Between the 2001-2002 and 2018-2019 seasons, 120 European soccer teams were followed prospectively for various seasons. Time loss injuries and player exposures were recorded individually in 6754 unique players. Injury incidence and burden were reported as the number of injuries and days absence per 1000 h with 95% confidence intervals (CIs). Injury severity was reported as median absence in days with the interquartile range (IQR). Results Out of 25,462 reported injuries, 93 (0.4%) were diagnosed as AAIS (38%) or PAIS (62%) in 77 players. AAIS and PAIS were similar regarding injury characteristics except for a greater proportion of AAIS having a gradual onset (69% vs.47%; P = 0.03) and being re-injuries (31% vs. 9%; P = 0.01). Impingement syndromes resulted in an overall incidence of 0.03 injuries (95% CI 0.02-0.03) per 1000 h and an injury burden of 0.4 absence days per 1000 h. PAIS incidence was significantly higher than that for AAIS [0.02 (95% CI 0.002-0.03) vs. 0.01 (95% CI 0.005-0.01) injuries per 1000 h (RR = 1.7). The absence was significantly longer in AAIS than in PAIS [10 (22) vs. 6 (11) days; P = 0.023]. Impingement syndromes that presented with a gradual onset had longer absences in comparison to impingement with an acute onset [8 (22) vs. 5 (11) days; P = 0.014]. Match play was associated with a higher incidence and greater injury burden than training: 0.08 vs. 0.02 injuries per 1000 h (RR 4.7), respectively, and 0.9 vs. 0.3 days absence per 1000 h (RR 2.5). Conclusion Ankle injuries are frequent in mens professional soccer and ankle impingement is increasingly recognized as a common source of pain, limited range of motion, and potential time loss. In our study, ankle impingement was the cause of time loss in less than 0.5% of all injuries. PAIS was more frequently reported than AAIS, but AAIS was associated with more absence days and a higher re-injury rate than PAIS. The findings in this study can assist the physician in best practice management on ankle impingment syndromes in professional football.
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| 5. |
- Ekstrand, Jan, 1944-, et al.
(författare)
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Hamstring injury rates have increased during recent seasons and now constitute 24% of all injuries in mens professional football: the UEFA Elite Club Injury Study from 2001/02 to 2021/22
- 2023
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Ingår i: British Journal of Sports Medicine. - : BMJ PUBLISHING GROUP. - 0306-3674 .- 1473-0480. ; 57:5, s. 292-298
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Tidskriftsartikel (refereegranskat)abstract
- ObjectivesTo: (1) describe hamstring injury incidence and burden in male professional football players over 21 seasons (2001/02 to 2021/22); (2) analyse the time-trends of hamstring muscle injuries over the most recent eight seasons (2014/15 to 2021/22); and (3) describe hamstring injury location, mechanism and recurrence rate. Methods3909 players from 54 teams (in 20 European countries) from 2001/02 to 2021/22 (21 consecutive seasons) were included. Team medical staff recorded individual player exposure and time-loss injuries. Time-trend analyses were performed with Poisson regression using generalised linear models. Results2636 hamstring injuries represented 19% of all reported injuries, with the proportion of all injuries increasing from 12% during the first season to 24% in the most recent season. During that same period, the percentage of all injury absence days caused by hamstring injuries increased from 10% to 20%. Between 2014/15 and 2021/22, training hamstring injury incidence increased (6.7% annually, 95% CI 1.7% to 12.5%) as did burden (9.0% annually, 95% CI 1.2% to 18.3%). During those years, the match hamstring injury incidence also increased (3.9% annually, 95% CI 0.1% to 7.9%) and with the same trend (not statistically significant) for match hamstring injury burden (6.2% annually, 95% CI -0.5% to 15.0%). ConclusionsHamstring injury proportions-in number of injuries and total absence days-doubled during the 21-year period of study. During the last eight seasons, hamstring injury rates have increased both in training and match play.
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| 6. |
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| 7. |
- Lindblom, Hanna, 1984-
(författare)
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Injury Prevention in Youth Football Players : Training Effects and Programme Implementation
- 2019
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Doktorsavhandling (övrigt vetenskapligt/konstnärligt)abstract
- Background With 17–35% of all 14-year-olds in Sweden being active in football, injuries do occur, most frequently during match play. Based on knowledge of injury mechanisms and risk factors, different injury prevention exercise programmes (IPEPs) have been developed. In this thesis, the Swedish IPEP Knee Control was used as a model for injury preventive training.Aim The overall aim of this thesis was to improve our understanding of the effects of the Knee Control injury prevention exercise programme on sports performance and jump-landing technique, as well as exploring programme implementation and coach experiences of using the programme in youth football.Methods Studies I and IV were cluster-randomised trials focusing on the performance effects of Knee Control. Study I included four teams with 41 female youth football players (mean age 14). The intervention group used Knee Control twice weekly for 11 weeks, whereas the control group teams did their usual training. Knee Control includes six different exercises at four levels of difficulty and with partner exercises and is meant to be used during warm-up at every training session. Performance was tested using a battery of balance, agility, jump and sprint tests at baseline and follow-up at an indoor venue. Study IV had a similar set-up but included two different interventions: Knee Control and a new, further-developed version of the programme, Knee Control+, which were studied during an eight-week intervention involving eight youth football teams, four male, four female (mean age 14), with 77 players. Similar, but not identical, performance tests were used in Study IV, along with drop vertical jumps and tuck jump assessment to assess jump-landing technique.Studies II and III focused on the implementation context. Study II was questionnaire based, using the RE-AIM framework covering the reach, effectiveness, adoption, implementation and maintenance of Knee Control. Coaches for female youth teams (n=352), one representative of the national football association and representatives of eight district football associations responded to web-based questionnaires. Data collection was performed two years after the nation-wide implementation of Knee Control started. Study III was a qualitative study that followed up on the results of Study II. Interviews were conducted with 20 coaches for female football teams and analysed using qualitative content analysis. The interviews focused on factors that affected the adoption and use of Knee Control. All 20 coaches had experience of Knee Control.Results Limited positive effects were seen on jump-landing technique in girls, with the total tuck jump assessment score improving, as well as two separate criteria, the number of jumps accomplished during the 10-second test and additionally an increased knee-flexion angle upon landing from a drop vertical jump. No improvements on the performance tests were found in either Study I or Study IV. Both studies, however, suffered from low player compliance with the IPEPs and as a result low training dosage. No major differences in results were seen between Knee Control and Knee Control+ in Study IV.Study II showed that 91% of the responding coaches were familiar with Knee Control, they perceived the programme to be effective, 74% had started to use it, and it was fairly well maintained over time. However, only one third of the coaches used the programme every week and few used the whole programme. There were no formal policies for programme implementation and use in the district football associations and clubs. Study III showed that the coach was vital for programme use but needed social support, buy-in from players, resources and a feasible programme to facilitate programme adoption and use. When facing challenges with Knee Control implementation and use, the coaches did their best to work around these obstacles; for example, by modifying the programme content or dosage.Conclusions In conclusion, limited positive effects on jump-landing technique were seen in girls, potentially affecting risk factors for injury positively. No clinically meaningful effects from Knee Control or Knee Control+ were seen on performance tests as measured in the studies in either boys or girls. This may be related to the low training dosage. The high programme reach, perceived effectiveness, adoption and fairly high maintenance of Knee Control were positive. The modifications of programme content and/or dosage were concerning but will hopefully decrease with a more user-friendly programme.
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| 8. |
- Lindblom, Hanna, 1984-, et al.
(författare)
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Limited positive effects on jump-landing technique in girls but not in boys after 8 weeks of injury prevention exercise training in youth football
- 2020
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Ingår i: Knee Surgery, Sports Traumatology, Arthroscopy. - : Springer Science and Business Media LLC. - 0942-2056 .- 1433-7347. ; 28:2, s. 528-537
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Tidskriftsartikel (refereegranskat)abstract
- PURPOSE: To evaluate changes in jump-landing technique in football-playing boys and girls after 8 weeks of injury prevention training.METHODS: Four boys' and four girls' teams (mean age 14.1 ± 0.8 years) were instructed to use either the original Knee Control injury prevention exercise programme (IPEP) or a further developed IPEP, Knee Control + , at every training session for 8 weeks. Baseline and follow-up testing of jump-landing technique included drop vertical jumps (DVJ), assessed subjectively and with two-dimensional movement analysis, and tuck jump assessment (TJA).RESULTS: Only minor differences in intervention effects were seen between the two IPEPs, and results are therefore presented for both intervention groups combined. At baseline 30% of the boys showed good knee control during the DVJ, normalised knee separation distances of 77-96% (versus hip) and a median of 3 flaws during the TJA. Among girls, 22% showed good knee control, normalised knee separation distances of 67-86% and a median of 4 flaws during the TJA. At follow-up, boys and girls performed significantly more jumps during TJA. No changes in jump-landing technique were seen in boys, whereas girls improved their knee flexion angle at initial contact in the DVJ (mean change + 4.7°, p < 0.001, 95% CI 2.36-6.99, d = 0.7) and their TJA total score (- 1 point, p = 0.045, r = - 0.4).CONCLUSION: The study showed small positive effects on jump-landing technique in girls, but not in boys, after 8 weeks of injury prevention training.LEVEL OF EVIDENCE: Level II.TRIAL REGISTRATION: Clinical Trials gov identifier: NCT03251404.
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| 9. |
- Lindblom, Hanna, et al.
(författare)
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Performance Effects with Injury Prevention Exercise Programmes in Male Youth Football Players: A Randomised Trial Comparing Two Interventions
- 2020
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Ingår i: SPORTS MEDICINE-OPEN. - : SPRINGER. - 2199-1170 .- 2198-9761. ; 6:1
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Tidskriftsartikel (refereegranskat)abstract
- Background: Increased performance from injury prevention exercise programmes (IPEPs) may affect injury risks positively and support the implementation of IPEPs. The primary aim was to study the performance effects of injury prevention exercises from two different IPEPs, the Knee Control IPEP and the further developed Knee Control+ IPEP, in youth male football players, and the secondary aim was to compare potential differences in performance effects between the IPEPs. Methods: Four male youth football teams were tested for agility, hop and sprint performance at the start of the second half of the competitive season and after the end of the 8-week season. Per randomisation, two teams used Knee Control and two teams Knee Control+. Results: In total, 47 players executed a median of 13 IPEP sessions (range 11-21 sessions). No improvements in performance were seen in the group as a whole. The intervention groups showed small declines in sprint and agility performance. There was a significant between-group difference in change for the 505 agility test, with improved performance in the Knee Control and worse performance in the Knee Control+ group, Delta(KC vs KC+) = - 0.012 (95% CI - 0.19 to -0.04), d = 0.98. Conclusions: No clinically meaningful performance effects were seen from the Knee Control or Knee Control+ IPEP in youth male athletes and no meaningful differences were seen between Knee Control and Knee Control+ regarding effects on performance tests.
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| 10. |
- Lundblad, Matilda, et al.
(författare)
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Epidemiological Data on LCL and PCL Injuries Over 17 Seasons in Mens Professional Soccer : The UEFA Elite Club Injury Study
- 2020
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Ingår i: Open Access Journal of Sports Medicine. - Macclesfield, United Kingdom : DOVE MEDICAL PRESS LTD. - 1179-1543. ; 11, s. 105-112
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Tidskriftsartikel (refereegranskat)abstract
- Background: There is limited epidemiological information on injury rates and injury mechanisms for lateral collateral ligament (LCL) and posterior cruciate ligament (PCL) injuries in male professional soccer. In addition, time trends and lay-off times for these injuries have not yet been determined.Aim: To determine injury rates and circumstances of LCL and PCL injuries over 17 seasons in mens professional soccer.Methods: A prospective cohort study, in which 68 professional European soccer teams were followed over 17 consecutive seasons (2001/2002 to 2017/2018). The teams medical staff recorded player exposure and time-loss injuries. Lay-off time was reported as the median and the first and third quartile. Injury rate was defined as the number of injuries per 1000 playerhours.Results: One hundred and twenty-eight LCL and 28 PCL injuries occurred during 2,554,686 h of exposure (rate 0.05 and 0.01/1000 h, respectively). The median lay-off time for LCL injuries was 15 (Q(1)=7, Q(3)=32) days, while it was 31 days for PCL injuries (Q(1)=15, Q(3)=74). The match injury rate for LCL injuries was 11 times higher than the training injury rate (0.21 vs 0.02/1000 h, rate ratio [RR] 10.5, 95% CI 7.3 to 15.1 p<0.001) and the match injury rate for PCL injuries was 20 times higher than the training injury rate (0.056 vs 0.003/1000 h, RR 20.1, 95% CI 8.2 to 49.6, p<0.001). LCL injuries saw a significant annual decrease of approximately 3.5% (p=0.006). In total, 58% (63/108) of all LCL injuries and 54% (14/26) of all PCL injuries were related to contact mechanism.Conclusion: This study with prospectively registered data on LCL and PCL injuries in mens professional soccer shows that the median lay-off from soccer for LCL and PCL injuries is approximately 2 and 4 weeks respectively. These rare knee ligament injuries typically occur during matches and are associated with a contact injury mechanism.
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| 11. |
- Omar, Osama, et al.
(författare)
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Compensation claims following anterior cruciate ligament injuries reported to the patient insurance company in Sweden in 2005-2014
- 2022
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Ingår i: Acta Orthopaedica. - : Taylor & Francis. - 1745-3674 .- 1745-3682. ; 93, s. 97-102
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Tidskriftsartikel (refereegranskat)abstract
- Background and purpose - Patients in the Swedish healthcare system are insured against avoidable adverse events via Landstingens omsesidiga Forsakringsbolag (LoF). We assessed the reasons for compensation claims reported to LoF following an ACL injury.Patients and methods - We searched the LoF database for compensation claims related to ACL injuries reported in 2005-2014, and cross-matched claims with the Swedish National Knee Ligament Register. We then performed a review of the medical records.Results - We identified 530 eligible claims in 2005-2014. 352 (66%) claims were accepted by LoF and 178 claims were rejected. Accepted claims corresponded to fewer than 1% of ACL surgeries performed in the same period. The most common reasons for an accepted claim were postoperative septic arthritis followed by suboptimal surgery and delay in diagnosis and treatment.Interpretation - There are different reasons for accepting a compensation claim following an ACL injury, which represents different treatment errors that can be avoided.
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| 12. |
- Waldén, Markus, 1975-
(författare)
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Epidemiology of injuries in elite football
- 2007
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Doktorsavhandling (övrigt vetenskapligt/konstnärligt)abstract
- The purpose of this thesis was to study the injury characteristics in elite football, and risk factors for injury with special emphasis on anterior cruciate ligament injury. All five papers followed a prospective design using a standardised methodology. Individual training and match exposure was recorded for all players participating as well as all injuries resulting in time loss. Severe injury was defined as absence from play longer than 4 weeks.In Paper I, all 14 teams in the Swedish men’s elite league were studied during the 2001 season. In this paper, all tissue damage regardless of subsequent time loss was also recorded. There were no differences in injury incidence between the two injury definitions during match play (27.2 vs. 25.9 injuries per 1000 hours, p=0.66) or training (5.7 vs. 5.2 injuries per 1000 hours, p=0.65). Significantly higher injury incidences for training injury, overuse injury and re-injury were found during the pre-season compared to the competitive season. Thigh strain was the single most common injury (14%).In Paper II, 8% of all players in the Swedish men’s elite league 2001 had a history of previous ACL injury at the start of the study period. These players had a higher incidence of new knee injury during the season than players without previous ACL injury (4.2 vs. 1.0 injuries per 1000 hours, p=0.02). The higher incidence of new knee injury was seen both when using the player (relative risk 3.4, 95% CI 1.8-6.3) and the knee (relative risk 4.5, 95% CI 2.3-8.8) as the unit of analysis.In Paper III, eleven clubs in the men’s elite leagues of five European countries were studied during the 2001-2002 season. The incidence of match injury was higher for the English and Dutch teams compared to the Mediterranean teams (41.8 vs. 24.0 injuries per 1000 hours, p=0.008) as well as the incidence of severe injury (2.0 vs. 1.1 injuries per 1000 hours, p=0.04). Players having international duty had a higher match exposure (42 vs. 28 matches, p<0.001), but a tendency to a lower training injury incidence (4.1 vs. 6.2 injuries per 1000 hours, p=0.051). Thigh strain was the most common injury (16%) with posterior strains being more frequent than anterior ones (67 vs. 36, p<0.0001).In Paper IV, the national teams of all 32 countries that qualified for the men’s European Championship 2004, the women’s European Championship 2005 and the men’s Under-19 European Championship 2005 were studied during the tournaments. There were no differences in match and training injury incidences between the championships. Teams eliminated after the group stage in the women’s championship had a significantly higher match injury incidence compared to teams going to the semi-finals (65.4 vs. 5.0 injuries per 1000 hours, p=0.02). Non-contact mechanisms were ascribed for 41% of the match injuries and these injuries were more common in the second half.In Paper V, all 12 clubs in the Swedish women’s elite league and 11 of 14 clubs in the men’s elite league were studied during the 2005 season. The prevalence of a history of previous ACL injury at the start of the study was three times higher among the female players (15% vs. 5%, p=0.0002). During the season, 16 new ACL injuries were recorded. There was a tendency to a lower mean age at injury among the women (20 vs. 24 years, p=0.069). Adjusted for age, no gender-related difference in the incidence of ACL injury was seen (relative risk 0.99, 95% CI 0.37-2.6). Age was associated with ACL injury incidence in women where the risk decreased by 24% for each year increase in age (relative risk 0.76, 95% CI 0.59-0.96).
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| 13. |
- Waldén, Markus, 1975-, et al.
(författare)
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Influence of the COVID-19 Lockdown and Restart on the Injury Incidence and Injury Burden in Mens Professional Football Leagues in 2020 : The UEFA Elite Club Injury Study
- 2022
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Ingår i: Sports Medicine-Open. - Heidelberg, Germany : Springer. - 2199-1170 .- 2198-9761. ; 8:1
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Tidskriftsartikel (refereegranskat)abstract
- Background Studies on football and the coronavirus disease 2019 (COVID-19) have mainly focused on the lockdown consequences for player fitness, the resumption of football training, and how to safely restart the league play, but injury data are scarce.Objective To describe the injury incidence and injury burden in mens professional football teams during the pandemic year of 2020.Methods Nineteen teams in 12 countries prospectively registered data on player-exposure and time-loss injuries throughout 2020. All major football leagues were paused as a direct response to the pandemic in March 2020 and were thereafter completely cancelled or restarted after a lockdown interval of at least two months. Historical data from 43 teams in the same cohort during the five preceding years (2015-2019) were used as reference. Between-season and within-season comparisons were made for injury incidence (number of injuries per 1000 h) and injury burden (number of absence days per 1000 h) with 95% confidence intervals and interquartile ranges.Results There was no increased match injury incidence or injury burden following the restart in 2020 compared with other time periods of 2020 and the corresponding periods 2015-2019. There was an increased training injury incidence and injury burden immediately during the lockdown in 2020, and they remained elevated also following the restart, being higher in 2020 compared with 2015-2019, respectively. The injury characteristics during the first months of the new 2020/21 season (August/September-December) were similar between the five teams that cancelled their 2019/20 season in March 2020 and the 14 teams that restarted their season in May/June 2020.Conclusions There was no increased match injury incidence or injury burden following the COVID-19 lockdown and restart of the football season in 2020, but training injury incidence and injury burden were elevated and higher than in 2015-2019.
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| 14. |
- Waldén, Markus, 1975-, et al.
(författare)
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Perspectives in football medicine
- 2018
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Ingår i: Der Unfallchirurg (Berlin. Print). - : Springer. - 0177-5537 .- 1433-044X. ; 121:6, s. 470-474
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Tidskriftsartikel (refereegranskat)abstract
- The high injury rate among mens professional football players is well-known. Therefore, the Union of European Football Associations (UEFA) launched an injury study already in 2001. This study, the UEFA Elite Club Injury Study (ECIS), currently includes data from a total of 51 clubs from 18 European countries with more than 14,000 registered injuries. With the 21(st) World Cup (WC) in Russia just around the corner, we have from our study identified a higher match injury rate and a higher proportion of severe injuries in the European Championships compared to the preceding club competitive seasons. Moreover, we have also recently showed that the muscle injury rate is higher when players are given a recovery window of five days or less between two matches. Considering the congested match schedule of the upcoming WC, it is therefore likely that injuries and fatigue once again will be a topic of discussion this summer.
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| 15. |
- Åkerlund, Ida, et al.
(författare)
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Forty-five per cent lower acute injury incidence but no effect on overuse injury prevalence in youth floorball players (aged 12-17 years) who used an injury prevention exercise programme: two-armed parallel-group cluster randomised controlled trial
- 2020
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Ingår i: British Journal of Sports Medicine. - : BMJ PUBLISHING GROUP. - 0306-3674 .- 1473-0480. ; 54:17, s. 1028-
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Tidskriftsartikel (refereegranskat)abstract
- Objective To study whether an injury prevention exercise programme would reduce the number of injuries in youth floorball players. Methods 81 youth community level floorball teams (48 clusters=clubs) with female and male players (12-17 years) were cluster-randomised into an intervention or control group. Intervention group coaches were instructed to use the Swedish Knee Control programme and a standard running warm-up before every training session, and the running warm-up before every match, during the season. Control teams continued usual training. Teams were followed during the 2017/2018 competitive season (26 weeks). Player exposure to floorball and occurrence of acute and overuse injuries were reported weekly via a web-based player survey using the Oslo Sports Trauma Research Centre Questionnaire. Results 17 clusters (301 players) in the intervention group and 12 clusters (170 players) in the control group were included for analyses. There were 349 unique injuries in 222 players. The intervention group had a 35% lower incidence of injuries overall than the control group (adjusted incidence rate ratio (IRR) 0.65, 95% CI 0.52 to 0.81). The absolute risk reduction was 6.6% (95% CI 3.2 to 10.0), and the number needed to treat was 152 hours of floorball exposure (95% CI 100 to 316). Intervention group teams had a 45% lower incidence of acute injuries (adjusted IRR 0.55, 95% CI 0.37 to 0.83). There was no difference in the prevalence of overuse injuries (adjusted prevalence rate ratio 0.96, 95% CI 0.73 to 1.26). Conclusion The Knee Control injury prevention programme reduced acute injuries in youth floorball players; there was no effect on overuse injuries.
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| 16. |
- Åkerlund, Ida, 1986-
(författare)
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Injury Prevention in Youth Male and Female Floorball Players : Effects, Compliance, and Experiences of the Knee Control Programme
- 2024
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Doktorsavhandling (övrigt vetenskapligt/konstnärligt)abstract
- Background: Floorball is one of the most popular team ball sports in Northern Europe, particularly among youths. The injury incidence is high, as is the case in other pivoting youth team ball sports, such as football. The injury prevention exercise programme (IPEP) Knee Control is developed to reduce injuries in team ball sports. Though, programme effects and implementation factors in floorball has not been evaluated.The overall aim of this thesis was to evaluate the effects of the Knee Control IPEP and explore players’ and coaches’ experiences of using Knee Control in youth floorball.Methods: Study A was a cluster-randomised controlled trial (RCT) evaluating the effects of Knee Control in reducing floorball injuries. The RCT comprised of 48 clusters (clubs) with male and female floorball players (12–17 years) on the community level who were randomised into either an intervention or control group. Seventeen clusters (31 teams with 301 players) in the intervention group and 12 clusters (16 teams with 170 players) in the control group were included for analyses. During a pre-season implementation workshop, the intervention group coaches were instructed to use Knee Control and a standard running warm-up before every training session during the season. Control teams continued usual training. Teams were followed during a competitive season (26 weeks). Player exposure to floorball and occurrence of acute and gradual onset injuries were reported weekly via a web-based player survey using the Oslo Sports Trauma Research Centre overuse injury questionnaire. Team and player compliance to Knee Control was reported monthly by coaches. Players were divided into three compliance groups based on their average weekly number of Knee Control sessions: high (≥2 sessions), intermediate (≥1 to <2 sessions), and low dose (<1 session). Additionally, players and coaches in the intervention group answered a post-season survey on experiences using Knee Control.Study B was a qualitative study exploring facilitators and barriers of Knee Control use and how to overcome the barriers. Semi-structured focus group discussions, six with players (11–17 years old, n =42), and two with coaches (n =12) were conducted.Results: In Study A, the intervention group had a 35% lower incidence rate of injuries overall (adjusted incidence rate ratio (IRR), 0.65; 95% confidence interval (CI), 0.52– 0.81) and 45% lower incidence of acute injuries (adjusted IRR, 0.55; 95% CI, 0.37–0.83) than the control group. There was no difference in the prevalence of gradual onset injuries. Male players in the high dose group had consistently lower injury incidence and prevalence compared to the low dose group, while no differences between the three compliance groups were seen in female players. Common facilitators of Knee Control use among coaches were support and education for coaches and high player motivation, and common barriers were that injury prevention training was time-consuming, a lack of space to execute the exercises, and a lack of player motivation. Players and coaches who intended to maintain use of Knee Control had higher belief in their ability to use Knee Control.Study B showed that player-perceived improved performance and making preventive training a natural part of floorball could be promoting factors for IPEP use. Promoting factors for coaches were described as support from the federation and club and collaboration with other coaches. To overcome barriers, players and coaches gave examples of how to adapt and progress the preventive training to the team by starting at an early age and keeping it simple.Conclusions: Knee Control was effective in preventing injuries, especially acute injuries, in Swedish youth floorball players. Male players had a clear dose-response relationship between Knee Control dose and injury rate reduction. Players found the Knee Control exercises necessary for injury prevention, but perceived them as boring, while coaches felt uncertain of their competence to use Knee Control and wished for support. Ideas on how to overcome barriers for IPEP use were to create a good structure and routines for preventive training, and to tailor the preventive training to the team, thus increasing player motivation.
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