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Rugby union

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https://www.readbyqxmd.com/read/28426240/influence-of-glenoid-defect-size-and-bone-fragment-size-on-the-clinical-outcome-after-arthroscopic-bankart-repair-in-male-collision-contact-athletes
#1
Shigeto Nakagawa, Tatsuo Mae, Kenji Yoneda, Kazutaka Kinugasa, Hiroyuki Nakamura
BACKGROUND: The usefulness of arthroscopic Bankart repair for collision/contact athletes has varied in previous reports. PURPOSE: To investigate the influence of glenoid rim morphologic characteristics on the clinical outcome after arthroscopic Bankart repair without additional reinforcement procedures in male collision/contact athletes, including athletes with a large glenoid defect. STUDY DESIGN: Case-control study; Level of evidence, 3...
April 1, 2017: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/28425057/quantifying-synergies-in-two-versus-one-situations-in-team-sports-an-example-from-rugby-union
#2
P Passos, J Milho, C Button
Collective behaviors in team sports result in players forming interpersonal synergies that contribute to performance goals. Because of the huge amount of variables that continuously constrain players' behavior during a game, the way that these synergies are formed remain unclear. Our aim was to quantify interpersonal synergies in the team sport of Rugby Union. For that purpose we used the Uncontrolled Manifold Hypothesis (UCM) to identify interpersonal synergies that are formed between ball carrier and support player in two-versus-one situations in Rugby Union...
April 19, 2017: Behavior Research Methods
https://www.readbyqxmd.com/read/28409514/neck-strength-and-self-reported-neck-dysfunction-what-is-the-impact-of-a-season-of-rugby-union
#3
Danielle M Salmon, S John Sullivan, Phil Handcock, Nancy J Rehrer, Brian Niven
BACKGROUND: Neck strength has been reported to reduce the incidence of concussions and neck injuries. However little is known about how neck strength changes over a playing season. AIM: To understand the impact a 20-week rugby season has on neck strength, neck pain (NP) and neck stiffness (NS) in a cohort of rugby players, relative to a non-contact control group. METHODS: This prospective cohort study employed a fixed-frame dynamometer to measure neck strength in a simulated contact posture in rugby players (n=32) and controls (n=15)...
April 13, 2017: Journal of Sports Medicine and Physical Fitness
https://www.readbyqxmd.com/read/28392337/epidemiology-of-injuries-in-australian-school-level-rugby-union
#4
Felix T Leung, Melinda M Franettovich Smith, Mark Brown, Ann Rahmann, M Dilani Mendis, Julie A Hides
OBJECTIVES: There is a high incidence of injuries in rugby union due to the physical nature of the game. There is a lack of large-scale injury surveillance data reported for school level rugby players of different ages. Our study aimed to investigate the frequency and nature of injuries being sustained during an Australian school level rugby union season. DESIGN: Prospective observational study. METHODS: Injury surveillance was conducted on 3585 rugby players from all 8 schools participating in an interschool rugby competition in Queensland, Australia...
March 21, 2017: Journal of Science and Medicine in Sport
https://www.readbyqxmd.com/read/28361327/how-much-rugby-is-too-much-a-seven-season-prospective-cohort-study-of-match-exposure-and-injury-risk-in-professional-rugby-union-players
#5
Sean Williams, Grant Trewartha, Simon P T Kemp, John H M Brooks, Colin W Fuller, Aileen E Taylor, Matthew J Cross, Gavin Shaddick, Keith A Stokes
INTRODUCTION: Numerous studies have documented the incidence and nature of injuries in professional rugby union, but few have identified specific risk factors for injury in this population using appropriate statistical methods. In particular, little is known about the role of previous short-term or longer-term match exposures in current injury risk in this setting. OBJECTIVES: Our objective was to investigate the influence that match exposure has upon injury risk in rugby union...
March 30, 2017: Sports Medicine
https://www.readbyqxmd.com/read/28360096/the-microbiome-of-professional-athletes-differs-from-that-of-more-sedentary-subjects-in-composition-and-particularly-at-the-functional-metabolic-level
#6
Wiley Barton, Nicholas C Penney, Owen Cronin, Isabel Garcia-Perez, Michael G Molloy, Elaine Holmes, Fergus Shanahan, Paul D Cotter, Orla O'Sullivan
OBJECTIVE: It is evident that the gut microbiota and factors that influence its composition and activity effect human metabolic, immunological and developmental processes. We previously reported that extreme physical activity with associated dietary adaptations, such as that pursued by professional athletes, is associated with changes in faecal microbial diversity and composition relative to that of individuals with a more sedentary lifestyle. Here we address the impact of these factors on the functionality/metabolic activity of the microbiota which reveals even greater separation between exercise and a more sedentary state...
March 30, 2017: Gut
https://www.readbyqxmd.com/read/28344455/running-and-metabolic-demands-of-elite-rugby-union-assessed-using-traditional-metabolic-power-and-heart-rate-monitoring-methods
#7
Romain Dubois, Thierry Paillard, Mark Lyons, David McGrath, Olivier Maurelli, Jacques Prioux
The aims of this study were (1) to analyze elite rugby union game demands using 3 different approaches: traditional, metabolic and heart rate-based methods (2) to explore the relationship between these methods and (3) to explore positional differences between the backs and forwards players. Time motion analysis and game demands of fourteen professional players (24.1 ± 3.4 y), over 5 European challenge cup games, were analyzed. Thresholds of 14.4 km·h(-1), 20 W.kg(-1) and 85% of maximal heart rate (HRmax) were set for high-intensity efforts across the three methods...
March 2017: Journal of Sports Science & Medicine
https://www.readbyqxmd.com/read/28287036/collective-effectiveness-in-the-xv-de-france-selections-and-time-matter
#8
Adrien Sedeaud, Guillaume Saulière, Laurie-Anne Marquet, Scott Del Vecchio, Avner Bar-Hen, Jean-François Toussaint
The aim of this study was to quantify the impact of selections and shared selections in the rugby union. Players' names, positions, and number of selections were collected for all XV de France's games (1906-2014). Every team's percentage of renewal of workforce was calculated for backs and forwards. During the 1987-2014 period, all second row forwards (locks), halfbacks, and centres' shared selections (number of times when two players have competed together) were recreated. The Best vs. Rest method was applied to these remodelled dyads...
March 13, 2017: European Journal of Sport Science
https://www.readbyqxmd.com/read/28282758/the-effects-of-barbell-load-on-countermovement-vertical-jump-power-and-net-impulse
#9
Peter D Mundy, Neal A Smith, Mike A Lauder, Jason P Lake
The aim of this study was to examine the effects of barbell load on countermovement vertical jump (CMJ) power and net impulse within a theoretically valid framework, cognisant of the underpinning force, temporal, and spatial components. A total of 24 resistance-trained rugby union athletes (average ± SD: age: 23.1 ± 3.4 years; height: 1.83 ± 0.05 m; body mass (BM): 91.3 ± 10.5 kg) performed maximal CMJ under 5 experimental conditions in a randomised, counterbalanced order: unloaded, and with additional loads of 25%, 50%, 75%, and 100% of BM...
September 26, 2016: Journal of Sports Sciences
https://www.readbyqxmd.com/read/28276911/the-effect-of-physical-contact-on-changes-in-fatigue-markers-following-rugby-union-field-based-training
#10
Gregory Roe, Joshua Darrall-Jones, Kevin Till, Padraic Phibbs, Dale Read, Jonathon Weakley, Andrew Rock, Ben Jones
Repeated physical contact in rugby union is thought to contribute to post-match fatigue; however, no evidence exists on the effect of contact activity during field-based training on fatigue responses. Therefore, the purpose of this study was to examine the effect of contact during training on fatigue markers in rugby union players. Twenty academy rugby union players participated in the cross-over study. The magnitude of change in upper- and lower-body neuromuscular function (NMF), whole blood creatine kinase concentration [CK] and perception of well-being was assessed pre-training (baseline), immediately and 24 h post-training following contact and non-contact, field-based training...
February 26, 2017: European Journal of Sport Science
https://www.readbyqxmd.com/read/28259848/calf-muscle-strain-injuries-in-sport-a-systematic-review-of-risk-factors-for-injury
#11
REVIEW
Brady Green, Tania Pizzari
OBJECTIVE: To systematically review the literature to identify risk factors for calf strain injury, and to direct future research into calf muscle injuries. DESIGN: Systematic review DATA SOURCES: Database searches conducted for Medline, CINAHL, EMBASE, AMED, AUSPORT, SportDiscus, PEDro and Cochrane Library. Manual reference checks, ahead of press searches, citation tracking. From inception to June 2016. ELIGIBILITY CRITERIA FOR SELECTING STUDIES: Studies evaluating and presenting data related to intrinsic or extrinsic risk factors for sustaining future calf injury...
March 4, 2017: British Journal of Sports Medicine
https://www.readbyqxmd.com/read/28259770/a-prospective-investigation-of-changes-in-the-sensorimotor-system-following-sports-concussion-an-exploratory-study
#12
Julie A Hides, Melinda M Franettovich Smith, M Dilani Mendis, Nigel A Smith, Andrew J Cooper, Julia Treleaven, Felix Leung, Andrew J Gardner, Paul McCrory, Nancy L Low Choy
BACKGROUND: Sports concussion is a risk for players involved in high impact, collision sports. Post-concussion, the majority of symptoms subside within 7-10 days, but can persist in 10-20% of athletes. Understanding the effects of sports concussion on sensorimotor systems could inform physiotherapy treatment. OBJECTIVE: To explore changes in sensorimotor function in the acute phase following sports concussion. DESIGN: Prospective cohort study...
February 24, 2017: Musculoskelet Sci Pract
https://www.readbyqxmd.com/read/28258820/the-king-devick-k-d-test-and-concussion-diagnosis-in-semi-professional-rugby-union-players
#13
John H Molloy, Ian Murphy, Conor Gissane
OBJECTIVES: To determine the utility of the King-Devick (K-D) test in identifying sports-related concussion in semi-professional rugby players. DESIGN: Descriptive cohort study. METHODS: 176 male players were recruited from a semi-professional rugby union competition in New Zealand (NZ). Baseline K-D scores were obtained in the pre-season. Post-match K-D and Pitch Side Concussion Assessment Version 2 (PSCA2) scores were obtained in those with suspected concussion...
February 28, 2017: Journal of Science and Medicine in Sport
https://www.readbyqxmd.com/read/28249857/application-of-the-subsequent-injury-categorisation-model-for-longitudinal-injury-surveillance-in-elite-rugby-and-cricket-intersport-comparisons-and-inter-rater-reliability-of-coding
#14
Isabel S Moore, Stephen Mount, Prabhat Mathema, Craig Ranson
BACKGROUND: When an athlete has more than one injury over a time period, it is important to determine if these are related to each other or not. The subsequent injury categorisation (SIC) model is a method designed to consider the relationship between an index injury and subsequent injury(ies). OBJECTIVE: The primary aim was to apply SIC to longitudinal injury data from two team sports: rugby union and cricket. The secondary aim was to determine SIC inter-rater reliability...
March 1, 2017: British Journal of Sports Medicine
https://www.readbyqxmd.com/read/28247331/exercise-based-interventions-for-injury-prevention-in-tackle-collision-ball-sports-a-systematic-review
#15
REVIEW
Nicola Sewry, Evert Verhagen, Mike Lambert, Willem van Mechelen, Wayne Viljoen, Clint Readhead, James Brown
BACKGROUND: The injury burden in collision sports is relatively high compared to other team sports. Therefore, participants in these sports would benefit by having effective injury prevention programs. Exercise-based interventions have successfully reduced injuries in soccer, but evidence on exercise-based interventions in tackle collision sports is limited. OBJECTIVE: The objective of this review is to systematically examine the evidence of exercise-based intervention programs reducing injuries in tackle collision sports...
February 28, 2017: Sports Medicine
https://www.readbyqxmd.com/read/28240715/influence-of-environmental-conditions-on-performance-and-heart-rate-responses-to-the-30-15-incremental-fitness-test-in-rugby-union-athletes
#16
Thomas W Jones, Alex O W Natera, Jacob Jennings, Aiden J Oakley
The purpose of this study was to examine the differences in performance and heart rate responses between a high heat outdoor condition (34.0°C, 64.1% humidity) and a temperate indoor condition (22.0°C, 50.0% humidity) during the 30-15 intermittent fitness test (30-15IFT). Eight highly trained Rugby Union players (28.1 ± 1.5 years, 181.4 ± 8.8 cm, 88.4 ± 13.3kg) completed the 30-15IFT in two different temperature conditions. Dependant variables recorded and analysed included; final running speed of the 30-15IFT, heart rate (HR) at rest (HR rest), maximum HR (Max HR), HR recovery (HRR), average HR (HR ave) and sub-maximal HR corresponding to 25%, 50% and 75% of final test speed (HR 25%, HR 50% and HR 75%) and HR at 13 km·h (HR 13 km·h)...
February 23, 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28195971/preseason-functional-movement-screen%C3%A2-predicts-risk-of-time-loss-injury-in-experienced-male-rugby-union-athletes
#17
Sean R Duke, Steve E Martin, Catherine A Gaul
The purpose of this study was to determine the relationship between Functional Movement Screen™ (FMS) score and the risk of time-loss injury in experienced male rugby union athletes. A secondary purpose was to determine the relationship between FMS-determined asymmetries and the risk of time-loss injury in these athletes.FMS scores were collected from male rugby union athletes (n=73) during preseason and half-way through one eight-month season. Time-loss injury data were collected throughout the full season...
February 8, 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28173970/a-comparison-of-catastrophic-injury-incidence-rates-by-provincial-rugby-union-in-south-africa
#18
Marelise Badenhorst, Evert A L M Verhagen, Willem van Mechelen, Michael I Lambert, Wayne Viljoen, Clint Readhead, Gail Baerecke, James C Brown
OBJECTIVES: To compare catastrophic injury rates between the 14 South African Provincial Rugby Unions. DESIGN: A prospective, population-based study conducted among all South African Unions between 2008-2014. METHODS: Player numbers in each Union were obtained from South African Rugby's 2013 Census. Catastrophic injuries were analysed from BokSmart's serious injury database. Incidence rates with 95% Confidence Intervals were calculated. Catastrophic injuries (Acute Spinal Cord Injuries and catastrophic Traumatic Brain Injuries) within Unions were compared statistically, using a Poisson regression with Incidence Rate Ratios (IRR) and a 95% confidence level (p<0...
January 24, 2017: Journal of Science and Medicine in Sport
https://www.readbyqxmd.com/read/28169150/no-relationship-exists-between-urinary-nt-probnp-and-gps-technology-in-professional-rugby-union
#19
Angus Lindsay, John G Lewis, Nicholas Gill, Nick Draper, Steven P Gieseg
OBJECTIVES: We investigated the level of cardiovascular stress associated with professional rugby union and whether these changes could be explained through external workload systems like GPS and video analysis. DESIGN: Urine samples (14 in game one and 13 in game two) were collected from professional rugby players before, immediately post- and 36h post-play in two consecutive games. METHODS: Urine was analysed for NT-proBNP by ELISA. Comparison with GPS (player-load and distance covered at specific speed bands) and video analysis (total impacts) were conducted...
January 24, 2017: Journal of Science and Medicine in Sport
https://www.readbyqxmd.com/read/28166184/postactivation-potentiation-and-change-of-direction-speed-in-elite-academy-rugby-players
#20
Chris Bishop, Anthony N Turner, Jon Cree, Sean Maloney, James Marshall, Paul Jarvis
This study investigated the effect of preceding pro-agility sprints with maximal isometric squats to determine if postactivation potentiation (PAP) could be harnessed in change of direction speed. Sixteen elite under-17 rugby union players (age: 16 ± 0.41yrs; body mass: 88.7 ± 12.1kg, height: 1.83 ± 0.07m) from an Aviva Premiership rugby club were tested. Subjects performed a change of direction specific warm-up, followed by two baseline pro-agility tests. After 10 minutes recovery, 3 x 3-second maximal isometric squats with a 2 minute recovery between sets were completed as a conditioning activity (CA) on a force plate where peak force and mean rate of force development over 300 milliseconds were measured...
February 1, 2017: Journal of Strength and Conditioning Research
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