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Epidemiology of injuries in Portuguese senior male rugby union sevens

2019-01Doctoral thesis Open access
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datacite.subject.fosCiências Médicas::Ciências da Saúde::Medicinapt_PT
dc.contributor.advisorSantiago, Luiz Miguel
dc.contributor.advisorBarata, Luís Manuel Taborda
dc.contributor.authorFerreira, António Miguel da Cruz
dc.date.accessioned2019-03-28T15:27:45Z
dc.date.available2019-03-28T15:27:45Z
dc.date.issued2019-01
dc.description.abstractObjectives: To conduct a systematic review of the literature regarding the epidemiology of injuries in rugby sevens. To determine the incidence rate of injuries in the Portuguese senior male sevens circuit, to characterize them and identify associated factors. To present the results of the study to relevant rugby agents, make suggestions aiming at the mitigation of the problem and collect their feedback. Methodology: A systematic review of the literature was performed. Most relevant electronic databases were searched, complemented by manual searches of bibliographies and “grey literature”. A prospective cohort study recording time-loss injuries was then conducted, during the 2015/16 Portuguese circuit (two top divisions). Main outcome measures included: incidence rate, location, type and severity of injuries. Data were also collected regarding players’ training loads. Later, in June 2017, suggestions to mitigate the burden of injuries in Portuguese sevens were presented during a scientific meeting and feedback was requested. Data were then compiled, analyzed and used to make recommendations to the Board of the Portuguese Rugby Union. Results: Overall injury incidence rates in elite senior male rugby sevens tournaments ranged between 101.5 and 119.8 per 1000 player-match-hours. Mean severity was greater than 34.1 days. Lower limb and joint/ligament injuries were the most frequent injuries in elite players. The only study in amateur players revealed a lower incidence rate, and a higher proportion of muscle/tendon injuries. During our cohort study, 27 injuries were recorded (incidence rate of 133.9 injuries per 1000 player match-hours). Average severity was 22.22 days. Most injuries occurred in the lower limb and were joint/ligament or muscle/tendon types. Association between injury and lower training loads during the sevens season was identified for the second-tier (p=0.021). For the same level, an inverse relation between training hours and injury severity was also found (p=0.008). Top-tier players training sevens and fifteens simultaneously during the year presented a significant increase of injury risk (relative risk=3.2; p=0.011). Based on these findings several recommendations were presented to independent rugby agents, with 95% agreeing and 81% stating that they would implement them at their own clubs. Conclusions: We conducted the first ever systematic review of the literature on the epidemiology of injuries in rugby sevens. Data obtained confirmed their high incidence rate and severity. We also presented the first study providing benchmark values for the incidence, severity and risk factors associated with injuries in senior male Portuguese rugby sevens. Incidence rates were similar to those at elite tournaments, but severity was lower. Considering the associations between training loads and injuries in both levels of the competition, we suggest the need to customize sevens preparation. The level of acceptance of our recommendations by independent rugby agents was surprisingly high. A summary of the recommendations was submitted to the Portuguese Rugby Union, for their consideration. Authorization and official support to implement a injury surveillance program for the 2017/18 rugby season were subsequently granted. Although we agree that the real impact of our effort will only be assessed by future studies, our main goal has already been achieved: scientific evidence was used aiming at the promotion of player’s safety and welfare in Portuguese rugby sevens.pt_PT
dc.description.abstractIntrodução: O rugby de sete (popularmente conhecido como Sevens) é uma modalidade desportiva, variante de rugby union, disputada por duas equipas de sete elementos cada, num campo com as dimensões habituais da variante de quinze (100 metros de comprimento por 70 de largura), em partidas com duração total de 14 minutos (duas partes de sete minutos com um intervalo de dois entre cada uma). Apesar de ter mais de um século de história, nas últimas duas décadas, após a criação dos Campeonatos Mundiais de Sevens (em 1993) e do Circuito Mundial de rugby de sete (em 1999), esta variante ganhou um especial destaque e mediatismo global, que culminou na sua introdução no programa dos Jogos Olímpicos de Verão, em 2016. Como se verifica na maioria dos fenómenos sociais de destaque, especialmente nos emergentes, também o rugby de sete passou a beneficiar de uma maior atenção prestada pelos académicos e investigadores nas áreas das Ciências do Desporto e da Medicina Desportiva, tendo as décadas de 2000 e 2010 assistido à realização e publicação de numerosos estudos procurando, em particular, caracterizar o perfil do atleta de rugby de sete, as exigências físicas e as dinâmicas do jogo, mas também aspectos relativos à epidemiologia das lesões desportivas nesta variante. No entanto, apesar deste maior interesse, quando comparada com a variante de rugby de quinze, a literatura disponível sobre o rugby de sete continua a ser escassa e essencialmente centrada nos níveis competitivos mais elevados, em particular nas competições de seleções de elite, como são os casos do Circuito Mundial de rugby de sete, do Campeonato do Mundo e do Torneio Olímpico. Dessa mesma literatura, é possível apurar que o rugby de sete é uma variante desportiva extremamente exigente do ponto de vista físico, favorecendo os atletas que possuem um conjunto alargado de atributos físicos como a velocidade, a capacidade de suportar um significativo número de contatos com o adversário e de realizar esforços estáticos de alta intensidade. Neste contexto, tratando-se de uma modalidade de conquista territorial e sendo disputada numa campo com as dimensões anteriormente referidas, ao permitir a realização de movimentos de corrida livre a alta intensidade e o contacto direto com oponente procurando interromper esse movimento e recuperar a bola, é aceitável a evidência de literatura científica relatando uma maior incidência de lesões desportivas nesta variante, comparando com o rugby de quinze (para o mesmo nível de competição – elite). [...]pt_PT
dc.identifier.tid101602308
dc.identifier.urihttp://hdl.handle.net/10400.6/6956
dc.language.isoengpt_PT
dc.subjectEpidemiologiapt_PT
dc.subjectFootballpt_PT
dc.subjectLesões desportivaspt_PT
dc.subjectMedicina desportivapt_PT
dc.subjectMedicina preventivapt_PT
dc.subjectRugby unionpt_PT
dc.subjectRugby de setept_PT
dc.titleEpidemiology of injuries in Portuguese senior male rugby union sevenspt_PT
dc.title.alternativeAssessment of injury incidence, severity, impact, type and risk factors in the two top tiers of competition and possible strategies for its mitigationpt_PT
dc.typedoctoral thesis
dspace.entity.typePublication
person.familyNameCruz-Ferreira
person.givenNameAntónio Miguel
person.identifier.ciencia-id101B-61C6-23FF
person.identifier.orcid0000-0002-9970-5259
person.identifier.scopus-author-id57191651399
rcaap.rightsopenAccesspt_PT
rcaap.typedoctoralThesispt_PT
relation.isAuthorOfPublicationf00b1a53-e2d5-4782-904e-db106acaa7af
relation.isAuthorOfPublication.latestForDiscoveryf00b1a53-e2d5-4782-904e-db106acaa7af
thesis.degree.nameDoutoramento em Medicinapt_PT

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