program

ORAL ABSTRACTS - THURSDAY, 21 MAY 2015epidemiological studies of Rugby injuries in order to bring worldwide consistency to the recordingand reporting of Rugby injuries. World Rugby, the international governing body for the sport,undertakes detailed injury surveillance studies at major international tournaments such as the RugbyWorld Cup, Junior World Championship and the Sevens World Series: all studies follow therecommended consensus methodology. World Rugby implements an open and transparent policy tothe results obtained from all of its injury surveillance studies; hence, all results are presented foropen access on the World Rugby Player Welfare internet site. This presentation will describe thephysical attributes (stature and body mass) of international Rugby players in Rugby-15s and Rugby-7s and will review whether these parameters have changed over the last 10 years. The epidemiologyof injuries sustained at the international level for both Rugby-15s and Rugby-7s will be presented,in terms of the incidence, severity, nature and causes of injury.S19.2Effective lineout tactics in high performance rugby unionJessika Morris, M Sayers, M StuelckenUniversity of The Sunshine Coast, School of Health and Sport Science, Sippy Downs, QLD,AustraliaA successful lineout is a key component of team success in high level Rugby Union and yet limitedresearch has been published on this key aspect of the game. Accordingly, the aim of this project wasto quantify the most successful lineout tactics adopted by high level rugby union teams. All thelineouts (n=2211) from 6 successful Super Rugby teams (2 teams from each conference) completedduring the 2014 season were analysed using standard performance analysis procedures. Variablesassessed include the location on the field, game time, lineout numbers, pre-throw jumpermovements, and throw type and location. Analysis was conducted using both parametric and nonparametricstatistical tests. Successful teams won over 88% of their own lineout throws andintercept 16% of opposition throws. Results also showed that 7-man lineouts were the mostcommon, particularly in attacking zones, with 4 and 5-man lineouts being increasingly morecommon in defensive positions on the field. The most common overall jumper movement wasstraight up, however,clear trends showed movements to be linked to the location in the lineoutwhere the throw was delivered (e.g. jumpers typically moved forward to take a ball at the front ofthe lineout, with backward movement being common for balls delivered to the back). Overall,lineout success was shown to be multifactorial and not able to be predicted using simple regressionmodels (i.e. one variable) for these highly successful teams. This study has highlighted theimportance of having a variety of lineout tactics to avoid predictable structures.S19.3Network centrality analysis may clarify the systematic defence performance of rugby unionKoh Sasaki(1), J Murakami(2), T Yamamoto(3), Y Ueno(4), K Washiya(5), S Tanaka(6), KShirai(7), M Miyao(8)(1) Nagoya University, Sports Science Center, Nagoya, Japan(2) Fukuoka University, Japan(3) National Defense Academy, Japan110