scholarly journals Incidence of Injury Among Male Brazilian Jiujitsu Fighters at the World Jiu-Jitsu No-Gi Championship 2009

2014 ◽  
Vol 49 (1) ◽  
pp. 89-94 ◽  
Author(s):  
Ethan M. Kreiswirth ◽  
Gregory D. Myer ◽  
Mitchell J. Rauh
Keyword(s):  
Incidence Rate ◽  
Injury Risk ◽  
Incidence Rates ◽  
Body Region ◽  
Injury Incidence ◽  
Joint Injury ◽  
Martial Art ◽  
The World ◽  
Potential Risk Factors ◽  
Rate Ratios

Context: Brazilian jiujitsu is a modern combat martial art that uses joint locks to submit an opponent and achieve victory. This form of martial art is a relatively young but rapidly growing combat sport worldwide. Objective: To determine the cumulative injury incidence and risk of injury by belt rank and body region at an international-level Brazilian jiujitsu tournament. Design: Descriptive epidemiology study. Setting: World Jiu-Jitsu No-Gi Championship 2009 in Long Beach, California. Patients or Other Participants: We monitored 951 athletes (age range, 18–50 years) enrolled to compete in the World Jiu-Jitsu No-Gi Championship 2009. Intervention(s): Fighters were categorized by belt level for group comparisons (belt experience). Incidence rates per 1000 athlete-exposures (AEs) and incidence rate ratios were compared by belt rank. Main Outcome Measure(s): Incidence rates and incidence rate ratios. Results: During the tournament, 1606 AEs and 62 total injuries were reported. Of these injuries, 40 affected the joints, for an overall incidence rate of 24.9 per 1000 AEs. The joint incidence rate by belt rank was 21.5 per 1000 AEs for blue, 21.3 per 1000 AEs for purple, 25.2 per 1000 AEs for brown, and 35.1 per 1000 AEs for black. We found no differences for incidence rate ratios of joint injury among individual belt groups (P > .05). More experienced (brown belt and black belt) competitors had a higher injury risk than the less experienced (blue belt and purple belt) competitors; however, the difference was not significant (incidence rate ratio = 1.65, 95% confidence interval = 0.9, 2.9; P = .06). The incidence of joint injury was highest at the knee (7.5 per 1000 AEs) and elbow (7.5 per 1000 AEs). Conclusions: The data from this international Brazilian jiujitsu tournament indicated that the risk of joint injury was similar among belt ranks or experience during this Brazilian jiujitsu competition. The knee and elbow were the joints most susceptible to injury. Future investigation of injury mechanism is warranted to develop strategies to reduce potential risk factors attributed to injury.

scholarly journals Injury Incidence Across the Menstrual Cycle in International Footballers

2021 ◽  
Vol 3 ◽  
Author(s):  
Dan Martin ◽  
Kate Timmins ◽  
Charlotte Cowie ◽  
Jon Alty ◽  
Ritan Mehta ◽  
...  
Keyword(s):  
Menstrual Cycle ◽  
Incidence Rate ◽  
Luteal Phase ◽  
Incidence Rates ◽  
Follicular Phase ◽  
Tendon Injuries ◽  
Cycle Phase ◽  
Injury Incidence ◽  
Rate Ratios ◽  
Late Follicular Phase

Objectives: This study aimed to assess how menstrual cycle phase and extended menstrual cycle length influence the incidence of injuries in international footballers.Methods: Over a 4-year period, injuries from England international footballers at training camps or matches were recorded, alongside self-reported information on menstrual cycle characteristics at the point of injury. Injuries in eumenorrheic players were categorized into early follicular, late follicular, or luteal phase. Frequencies were also compared between injuries recorded during the typical cycle and those that occurred after the cycle would be expected to have finished. Injury incidence rates (per 1,000 person days) and injury incidence rate ratios were calculated for each phase for all injuries and injuries stratified by type.Results: One hundred fifty-six injuries from 113 players were eligible for analysis. Injury incidence rates per 1,000 person-days were 31.9 in the follicular, 46.8 in the late follicular, and 35.4 in the luteal phase, resulting in injury incidence rate ratios of 1.47 (Late follicular:Follicular), 1.11 (Luteal:Follicular), and 0.76 (Luteal:Late follicular). Injury incident rate ratios showed that muscle and tendon injury rates were 88% greater in the late follicular phase compared to the follicular phase, with muscle rupture/tear/strain/cramps and tendon injuries/ruptures occurring over twice as often during the late follicular phase compared to other phases 20% of injuries were reported as occurring when athletes were “overdue” menses.Conclusion: Muscle and tendon injuries occurred almost twice as often in the late follicular phase compared to the early follicular or luteal phase. Injury risk may be elevated in typically eumenorrheic women in the days after their next menstruation was expected to start.

scholarly journals Descriptive Epidemiology of Injuries in Professional Ultimate Frisbee Athletes

2020 ◽  
Vol 55 (2) ◽  
pp. 195-204 ◽  
Author(s):  
Matthew C. Hess ◽  
David I. Swedler ◽  
Christine S. Collins ◽  
Brent A. Ponce ◽  
Eugene W. Brabston
Keyword(s):  
Incidence Rate ◽  
Epidemiologic Study ◽  
Incidence Rates ◽  
Thigh Muscle ◽  
Surveillance Program ◽  
Injury Incidence ◽  
Descriptive Epidemiology ◽  
Injury Rates ◽  
Ultimate Frisbee ◽  
Rate Ratios

Context Injuries in professional ultimate Frisbee (ultimate) athletes have never been described. Objective To determine injury rates, profiles, and associated factors using the first injury-surveillance program for professional ultimate. Design Descriptive epidemiology study. Setting American Ultimate Disc League professional ultimate teams during the 2017 season. Patients or Other Participants Sixteen all-male teams. Main Outcome Measure(s) Injury incidence rates (IRs) were calculated as injuries per 1000 athlete-exposures (AEs). Incidence rate ratios were determined to compare IRs with 95% confidence intervals, which were used to calculate differences. Results We observed 299 injuries over 8963 AEs for a total IR of 33.36 per 1000 AEs. Most injuries affected the lower extremity (72%). The most common injuries were thigh-muscle strains (12.7%) and ankle-ligament sprains (11.4%). Running was the most frequent injury mechanism (32%). Twenty-nine percent of injuries involved collisions; however, the concussion rate was low (IR = 0.22 per 1000 AEs). Injuries were more likely to occur during competition and in the second half of games. An artificial turf playing surface did not affect overall injury rates (Mantel-Haenszel incidence rate ratio = 1.28; 95% confidence interval = 0.99, 1.67). Conclusions To our knowledge, this is the first epidemiologic study of professional ultimate injuries. Injury rates were comparable with those of similar collegiate- and professional-level sports.

scholarly journals The trends in global, regional, and national incidence of pneumoconiosis caused by different etiologies: an analysis from the Global Burden of Disease Study 2017

2019 ◽  
Author(s):  
Peng Shi ◽  
Xiaoyue Xing ◽  
Shuhua Xi ◽  
Hongmei Jing ◽  
Jiamei Yuan ◽  
...  
Keyword(s):  
Incidence Rate ◽  
Burden Of Disease ◽  
Incidence Rates ◽  
Global Burden Of Disease ◽  
Health Concern ◽  
Global Burden ◽  
Incidence Trends ◽  
The World ◽  
Disease Study ◽  
Incident Cases

Abstract Pneumoconiosis has the potential to cause progressive and permanent physical disability. And continues to be one of major public health concern across the world. However, our literature searches identified a scarcity of data about global prevalence of pneumoconiosis. Accurate data on the incidence of pneumoconiosis is critical for health resource planning and health policy development. We therefore aimed to determine the pattern of pneumoconiosis incidence and temporal trends. Methods: Annual incident cases and age standardized incidence rates on pneumoconiosis etiology between 1990-2017 were collected from the Global Burden of Disease Study 2017. We calculate the average annual percentage changes of age standardized incidence rates by sex, region, and etiology to determine incidence trends of pneumoconiosis. Results: Globally, the number of pneumoconiosis cases increased 66.0% from 36,186 in 1990 to 60,055 in 2017. The overall age standardized incidence rate decreased by an average 0.6% (95% CI: 0.5%, 0.6%) per year in the same period. The age standardized incidence rate of silicosis, asbestosis, and other pneumoconiosis decreased between 1990 and 2017. The corresponding average annual percentage changes were -0.8%, -0.9%, and -0.5%, respectively. The age standardized incidence rate of asbestosis displayed an increasing trend. At the same time, we also found a significant negative association was found between average annual percentage changes and socio-demographic indexs when the socio-demographic index above 0.7. Conclusions: Pneumoconiosis remains a major occupational health illnesses in the world. Incidence patterns of pneumoconiosis caused by different etiologies were heterogeneous across regions and countries. We observed an unfavorable trend that asbestosis was predominant in countries with a high socio-demographic index, though we have attained great achievements in silicosis and coal workers’ pneumoconiosis prevention. The information in this study suggests that some countries should establish more targeted and specific strategies to forestall the increase in pneumoconiosis.

scholarly journals Injuries in Korean Elite Taekwondo Athletes: A Prospective Study

2020 ◽  
Vol 17 (14) ◽  
pp. 5143
Author(s):  
Boae Son ◽  
Young Jae Cho ◽  
Hee Seong Jeong ◽  
Sae Yong Lee
Keyword(s):  
Female Athletes ◽  
Injury Rate ◽  
Incidence Rates ◽  
Injury Incidence ◽  
Event Type ◽  
Severe Injuries ◽  
Injury Surveillance System ◽  
Common Location ◽  
Rate Ratios ◽  
A Prospective Study

This prospective cohort study aimed to identify the incidence and characteristics of Taekwondo-related injuries according to age, sex, and event type (i.e., practice or competition) based on a web-based injury surveillance system (ISS) with a follow-up period of 12 months. A total of 285 members of the Korea Taekwondo Association who competed in the 2016 season participated. Injury incidence rates (IRs) were calculated per 1000 athlete-exposures (AEs). Injury rate ratios (RRs) with 95% confidence intervals were calculated and compared regarding age, sex, and event type. During the season, 336 injuries were reported, resulting in a rate of 6.31/1000 AEs. The most common location, type, and mechanism of injury in Taekwondo athletes were the foot/ankle, ligament sprain, and contact with another player, respectively. The overall injury IRs associated with Taekwondo practicing and competition were 4.79/1000 AEs and 24.86/1000 AEs, respectively. The overall injury RR related to both practice and competition was higher in youth athletes than in adult athletes. However, adult athletes were more likely to sustain more severe injuries. Korean elite Taekwondo athletes were commonly exposed to injury, especially youth and female athletes. Therefore, continuation of the ISS suggests the development of interventions for preventing injuries sustained by Taekwondo athletes.

scholarly journals Epidemiology of injuries in professional football: a systematic review and meta-analysis

2019 ◽  
Vol 54 (12) ◽  
pp. 711-718 ◽  
Author(s):  
Alejandro López-Valenciano ◽  
Iñaki Ruiz-Pérez ◽  
Alberto Garcia-Gómez ◽  
Francisco J Vera-Garcia ◽  
Mark De Ste Croix ◽  
...  
Keyword(s):  
Systematic Review ◽  
Incidence Rate ◽  
Meta Analysis ◽  
Epidemiological Data ◽  
Pooled Analysis ◽  
Incidence Rates ◽  
Football Players ◽  
Injury Incidence ◽  
Lower Extremity Injuries ◽  
Trial Quality

ObjectiveWe performed a systematic review and meta-analysis of epidemiological data of injuries in professional male football.MethodForty-four studies have reported the incidence of injuries in football. Two reviewers independently extracted data and assessed trial quality using the Strengthening the Reporting of Observational Studies in Epidemiology statement and Newcastle Ottawa Scale. Studies were combined in a pooled analysis using a Poisson random effects regression model.ResultsThe overall incidence of injuries in professional male football players was 8.1 injuries/1000 hours of exposure. Match injury incidence (36 injuries/1000 hours of exposure) was almost 10 times higher than training injury incidence rate (3.7 injuries/1000 hours of exposure). Lower extremity injuries had the highest incidence rates (6.8 injuries/1000 hours of exposure). The most common types of injuries were muscle/tendon (4.6 injuries/1000 hours of exposure), which were frequently associated with traumatic incidents. Minor injuries (1–3 days of time loss) were the most common. The incidence rate of injuries in the top 5 European professional leagues was not different to that of the professional leagues in other countries (6.8 vs 7.6 injuries/1000 hours of exposure, respectively).ConclusionsProfessional male football players have a substantial risk of sustaining injuries, especially during matches.

scholarly journals Incidence of extra-articular manifestations in ankylosing spondylitis, psoriatic arthritis and undifferentiated spondyloarthritis: results from a national register-based cohort study

Rheumatology ◽  
2020 ◽  
Author(s):  
Karin Bengtsson ◽  
Helena Forsblad-d'Elia ◽  
Anna Deminger ◽  
Eva Klingberg ◽  
Mats Dehlin ◽  
...  
Keyword(s):  
Incidence Rate ◽  
Incidence Rates ◽  
The Other ◽  
Population Register ◽  
Swedish Population ◽  
National Patient Register ◽  
National Patient ◽  
Rate Ratios ◽  
Strength Of Association

Abstract Objectives To estimate the incidence and strength of association of extra-articular manifestations [EAMs, here: anterior uveitis (AU), IBD and psoriasis] in patients with AS, undifferentiated SpA (uSpA) and PsA, compared with controls. Methods Three mutually exclusive cohorts of patients aged 18–69 years with AS (n = 8517), uSpA (n = 10 245) and PsA (n = 22 667) were identified in the Swedish National Patient Register 2001–2015. Age-, sex- and geography-matched controls were identified from the Swedish Population Register. Follow-up began 1 January 2006, or six months after the first SpA diagnosis, whichever occurred later, and ended at the first date of the EAM under study, death, emigration, 70 years of age, and 31 December 2016. Incidence rates (IRs) and incidence rate ratios were calculated for each EAM, and stratified by sex and age. Results Incidence rate ratios for incident AU, IBD and psoriasis were significantly increased in AS (20.2, 6.2, 2.5), uSpA (13.6, 5.7, 3.8) and PsA (2.5, 2.3, n.a) vs controls. Men with AS and uSpA had significantly higher IRs per 1000 person-years at risk for incident AU than women with AS (IR 15.8 vs 11.2) and uSpA (IR 10.1 vs 6.0), whereas no such sex difference was demonstrated in PsA or for the other EAMs. Conclusions AU, followed by IBD and psoriasis, is the EAM most strongly associated with AS and uSpA. Among the SpA subtypes, AS and uSpA display a largely similar pattern of EAMs, whereas PsA has a considerably weaker association with AU and IBD.

scholarly journals A 2-Year Prospective Study of Injury Epidemiology in Elite Australian Rugby Sevens: Exploration of Incidence Rates, Severity, Injury Type, and Subsequent Injury in Men and Women

2019 ◽  
Vol 47 (6) ◽  
pp. 1302-1311 ◽  
Author(s):  
Liam A. Toohey ◽  
Michael K. Drew ◽  
Caroline F. Finch ◽  
Jill L. Cook ◽  
Lauren V. Fortington
Keyword(s):  
Relative Risk ◽  
Incidence Rate ◽  
High Speed ◽  
Incidence Rates ◽  
Medical Attention ◽  
Injury Incidence ◽  
Surveillance Period ◽  
Men And Women ◽  
Injury Occurrence ◽  
Subsequent Injury

Background: Injuries are common in rugby sevens, but studies to date have been limited to short, noncontinuous periods and reporting of match injuries only. Purpose: To report the injury incidence rate (IIR), severity, and burden of injuries sustained by men and women in the Australian rugby sevens program and to provide the first longitudinal investigation of subsequent injury occurrence in rugby sevens looking beyond tournament injuries only. Study Design: Descriptive epidemiology study. Methods: Ninety international rugby sevens players (55 men and 35 women) were prospectively followed over 2 consecutive seasons (2015-2016 and 2016-2017). All medical attention injuries were reported irrespective of time loss. Individual exposure in terms of minutes, distance, and high-speed distance was captured for each player for matches and on-field training, with the use of global positioning system devices. The IIR and injury burden (IIR × days lost to injury) were calculated per 1000 player-hours, and descriptive analyses were performed. Results: Seventy-three players (81.1%) sustained 365 injuries at an IIR of 43.2 per 1000 player-hours (95% CI, 38.8-47.8). As compared with male players, female players experienced a lower but nonsignificant IIR (incidence rate ratio, 0.91; 95% CI, 0.73-1.12). Female players also sustained a higher proportion of injuries to the trunk region (relative risk, 1.75; 95% CI, 1.28-2.40) but a lower number to the head/neck region (relative risk, 0.58; 95% CI, 0.37-0.93; P = .011). The majority (80.7%) of subsequent injuries were of a different site and nature than previous injuries. A trend toward a reduced number of days, participation time, distance, and high-speed distance completed before the next injury was observed after successive injury occurrence. Conclusion: A trend for a lower IIR was observed for female players compared with male players, with variation of injury profiles observed between sexes. With a surveillance period of 2 years, subsequent injuries account for the majority of injuries sustained in rugby sevens, and they are typically different from previous types of sustained injuries. After each successive injury, the risk profile for future injury occurrence appears to be altered, which warrants further investigation to inform injury prevention strategies in rugby sevens.

scholarly journals Epidemiology of Injury Due to Race-Day Jockey Falls in Professional Flat and Jump Horse Racing in Ireland, 2011–2015

2017 ◽  
Vol 52 (12) ◽  
pp. 1140-1146 ◽  
Author(s):  
Siobhan O'Connor ◽  
Giles Warrington ◽  
Adrian McGoldrick ◽  
SarahJane Cullen
Keyword(s):  
Incidence Rate ◽  
Incidence Rate Ratio ◽  
Previous Analysis ◽  
Soft Tissue Injuries ◽  
Medical Doctor ◽  
Injury Incidence ◽  
Horse Racing ◽  
Limb Injuries ◽  
Fall Rates ◽  
Rate Ratios

Context:  Professional horse racing is considered a high-risk sport, yet the last analysis of fall and injury incidence in this sport in Ireland was completed between 1999 and 2006. Objective:  To provide an updated analysis of the fall and injury incidence in professional flat and jump horse racing in Ireland from 2011 through 2015, compare it with the previous analysis, and detail the specific types and locations of injuries. Design:  Descriptive epidemiology study. Setting:  A medical doctor recorded all injuries that occurred at every official flat and jump race meeting for the 2011 through 2015 seasons using standardized injury-report forms. Main Outcome Measure(s):  Injury and fall rates and their 95% confidence intervals (CIs) were reported for flat and jump racing. Incidence rate ratios and 95% CIs were calculated between flat and jump racing, between the 1999–2006 analysis and the current results, and between 2011 and 2015. The distribution of injuries for type and location of injury was reported. Results:  Compared with flat racing, jump racing had significantly more falls per 1000 rides (49.5 versus 3.8), injuries per 1000 rides (10.1 versus 1.4), and injuries per 1000 meetings (776.0 versus 94.1). However, the rate of injuries per 1000 falls was significantly higher in flat racing (352.8 versus 203.8). An increase in injuries per 1000 falls between 2011 and 2015 was found in flat racing (P = .005). Since the previous analysis, a significant increase in injuries per 1000 rides and falls was noted in jump racing. Soft tissue injuries were predominant in flat and jump racing (61.54% and 68.80%, respectively), with fractures the second most common injury (15.38% and 18.06%, respectively). Concussions were more prevalent from flat-racing falls (incidence rate ratio = 0.30; 95% CI = 0.15, 0.61). The lower limb was the most frequent location of injury (32.89%) in flat racing; however, in jump racing, upper limb injuries (34.97%) were predominant. Conclusions:  An update on professional flat- and jump-racing fall and injury epidemiology is provided. Further research to identify risk factors for injury, design and investigate the feasibility of injury-prevention strategies, and document their effects on fall and injury incidence is required.

scholarly journals Profile of the Portuguese male university rugby sevens championship

2018 ◽  
Author(s):  
João Diogo Silva ◽  
Antonio Cruz-Ferreira ◽  
Carlos Alberto Fontes Ribeiro ◽  
Luiz Miguel Santiago
Keyword(s):  
Incidence Rate ◽  
Statistical Significance ◽  
Return To Sport ◽  
Small Sample ◽  
Injury Incidence ◽  
Warm Up ◽  
The World ◽  
Training Habits ◽  
The Individual

Introduction: Rugby Sevens is one of the fastest growing sports in the world, especially the sevens variant after its inclusion in the Summer Olympics’ programme. The Portuguese University Sevens Championship is an amateur tournament that takes place every year. Objectives: To gather a set of relevant data regarding the profile of the Portuguese university rugby sevens’ players, as well as the epidemiology of injuries at this level of competition. Methodology: Firstly, an observational study was conducted to collect data regarding each player anthropometry, individual experience, training habits and warm-up routines. Secondly, a prospective cohort study including all participating athletes was conducted, to identify and describe all injuries occurring during the competition. A follow-up period until the return to sport from all injured players was conducted. Results: A total of 87 players from 8 teams competed in the tournament. On average, athlete’s heighted 178.6 cm (± 6.65) and weighted 83.34 kg (± 11.22). Total match exposure was 53.67 player match-hours and the injury incidence rate was 186.2 per 1000 player match-hours (94.7-332.4, CI 95%). Average severity was 26.6 days (± 6.23). Most injuries occurred on the second half (n=6), following contact events with the opponent (n=8). Lower limb (n=6) and joint/ligament (n=7) injuries were the most frequent. Discussion: The overall injury incidence rate was higher than any previously reported in the literature. Insufficient training and warm-up routines of the injured players strengthens the idea that these are key elements in injury prevention. The small sample limits the results' statistical significance. Conclusions: Similar but larger studies must be conducted to gain better knowledge of the individual profile of the Portuguese university rugby player and the burden of injuries at this level of competition.

scholarly journals Epidemiology of Shoulder Injuries in Schoolboy Rugby Union in Ireland

2021 ◽  
Vol 9 (8) ◽  
pp. 232596712110234
Author(s):  
Therese M. Leahy ◽  
Ian C. Kenny ◽  
Mark J. Campbell ◽  
Giles D. Warrington ◽  
Roisin Cahalan ◽  
...  
Keyword(s):  
Incidence Rates ◽  
Rugby Union ◽  
Injury Incidence ◽  
Shoulder Injuries ◽  
Descriptive Epidemiology ◽  
Epidemiology Study ◽  
Time Loss ◽  
Potential Risk Factors ◽  
Rugby Players ◽  
And Training

Background: The shoulder has been reported as a frequent location of injury in adult professional and amateur rugby, with match injury incidence rates ranging from 1.8 to 3 per 1000 player-hours (h). An increased understanding of the incidence and mechanism of shoulder injuries in school rugby players is vital to establish effective injury preventive strategies and advise on appropriate rehabilitation. Purpose: To describe the incidence, nature, and severity of shoulder injuries in schoolboy rugby in Ireland. Study Design: Descriptive epidemiology study. Methods: Injury surveillance was carried out for Senior Cup teams across two seasons (N = 665 players aged 17-19 years) in Ireland from 2018 to 2020. Match and training injury data were recorded using an online system by trained nominated injury recorders. Match exposure was also recorded. Results: Shoulder match injury incidence was 12.2 per 1000 h (95% CI, 9.1-16.2), with a mean severity of 47 days’ time loss and an overall burden of 573 days per 1000 h. In total, 47 match and 5 training shoulder injuries were recorded. The most common injuries were shoulder dislocations/subluxations (34%), followed by acromioclavicular joint sprains (30%). Shoulder dislocations/subluxations represented the most burdensome injury (280 days per 1000 h). The tackle accounted for the majority (81%) of shoulder injuries. Forwards sustained a significantly higher incidence of shoulder injuries (8.3/1000 h) in comparison with backs (3.9/1000 h), with a rate ratio of 2.13 (95% CI, 1.15-3.94; P = .015). Conclusion: We found a notably higher injury incidence rate in schoolboy rugby as compared with the adult amateur and professional game. Shoulder injuries were responsible for more days lost than any other injury, and shoulder dislocations were the most severe. This is of particular concern so early in a player’s career and warrants further investigation into potential risk factors and mechanisms associated with shoulder injuries in school-age players.

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