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https://www.readbyqxmd.com/read/28195971/preseason-functional-movement-screen%C3%A2-predicts-risk-of-time-loss-injury-in-experienced-male-rugby-union-athletes
#1
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
#2
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
#3
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
#4
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
https://www.readbyqxmd.com/read/28146395/concussions-and-head-injuries-in-english-community-rugby-union-match-play
#5
Simon P Roberts, Grant Trewartha, Michael England, William Goodison, Keith A Stokes
BACKGROUND: Previous research has described general injury patterns in community-level rugby union, but specific information on time-loss head injuries has not been reported. PURPOSE: To establish the incidence and nature of significant time-loss head injuries in English community rugby match play, and to identify the injury risk for specific contact events. STUDY DESIGN: Descriptive epidemiology study. METHODS: Over 6 seasons, injury information was collected from 46 (2009-2010), 67 (2010-2011), 76 (2011-2012), 50 (2012-2013), 67 (2013-2014), and 58 (2014-2015) English community rugby clubs (Rugby Football Union levels 3-9) over a total of 175,940 hours of player match exposure...
February 2017: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/28146030/strength-and-conditioning-practices-in-adolescent-rugby-players-relationship-with-changes-in-physical-qualities
#6
Jonathon J S Weakley, Kevin Till, Joshua Darrall-Jones, Gregory A B Roe, Padraic J Phibbs, Dale Read, Ben L Jones
Adolescent rugby players benefit from the implementation of resistance training. However resistance training practices and how they influence short-term physical change is unknown. Therefore the purpose of this study was to quantify resistance training practices, evaluate physical development, and relate these changes to resistance training variables across 12-weeks in adolescent rugby union players. Thirty-five male adolescent rugby union players participated in the study with subjects completing an anthropometric and physical testing battery pre- and post- a 12-week in-season mesocycle...
January 30, 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28125898/mechanisms-and-factors-associated-with-tackle-related-injuries-in-south-african-youth-rugby-union-players
#7
Nicholas Burger, Mike Ian Lambert, Wayne Viljoen, James Craig Brown, Clint Readhead, Steve den Hollander, Sharief Hendricks
BACKGROUND: The majority of injuries in rugby union occur during tackle events. The mechanisms and causes of these injuries are well established in senior rugby union. PURPOSE: To use information from an injury database and assess video footage of tackle-related injuries in youth rugby union matches to identify environmental factors and mechanisms that are potentially confounding to these injuries. STUDY DESIGN: Descriptive epidemiological study...
February 2017: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/28116102/self-determined-motivation-in-rehabilitating-professional-rugby-union-players
#8
Fraser Carson, Remco C J Polman
BACKGROUND: The aim of the present study was to explore the views of professional rugby union players during the early rehabilitation, late rehabilitation and return to play stages, following anterior cruciate ligament (ACL) injury. METHODS: A qualitative dominant, mixed methodological approach was utilized with five players who had suffered an ACL injury requiring reconstructive surgery. A longitudinal approach, concurrent with each player's rehabilitation, consisting of twice monthly interviews, a self-report diary and three established questionnaires (MOS-Social Support Survey, Sherbourne & Stewart, 1991; Sport Climate Questionnaire, Deci & Ryan, n...
2017: BMC Sports Science, Medicine and Rehabilitation
https://www.readbyqxmd.com/read/28107556/do-post-concussion-like-symptom-responses-change-following-exercise-or-sports-participation-in-a-non-concussed-cohort
#9
Arun Prasad Balasundaram, Josie Athens, Anthony G Schneiders, Paul McCrory, S John Sullivan
The purpose of this study were; 1) To determine the reliable change in post concussion-like symptoms reported following self-selected exercise or sports activities. 2) To explore the potential influence of gender and exercise parameters on post concussion-like symptoms reported by a non-concussed cohort following exercise/training. A pre-post observational design was used. A convenience sample of students aged 18-30 years who visited a university recreation centre to engage in their chosen exercise activity, and a purposeful sample of men's and women's rugby union players engaged in their regular training sessions...
January 20, 2017: Scandinavian Journal of Medicine & Science in Sports
https://www.readbyqxmd.com/read/28103813/fat-mass-and-obesity-associated-fto-gene-influences-skeletal-muscle-phenotypes-in-non-resistance-trained-males-and-elite-rugby-playing-position
#10
S M Heffernan, G K Stebbings, L P Kilduff, R M Erskine, S H Day, C I Morse, J S McPhee, C J Cook, B Vance, W J Ribbans, S M Raleigh, C Roberts, M A Bennett, G Wang, M Collins, Y P Pitsiladis, A G Williams
BACKGROUND: FTO gene variants have been associated with obesity phenotypes in sedentary and obese populations, but rarely with skeletal muscle and elite athlete phenotypes. METHODS: In 1089 participants, comprising 530 elite rugby athletes and 559 non-athletes, DNA was collected and genotyped for the FTO rs9939609 variant using real-time PCR. In a subgroup of non-resistance trained individuals (NT; n = 120), we also assessed structural and functional skeletal muscle phenotypes using dual energy x-ray absorptiometry, ultrasound and isokinetic dynamometry...
January 19, 2017: BMC Genetics
https://www.readbyqxmd.com/read/28098055/nonsurgical-treatment-of-mason-type-ii-radial-head-fractures-in-athletes-a-retrospective-study
#11
M Guzzini, A Vadalà, A Agrò, V Di Sanzo, D Pironi, A Redler, P Serlorenzi, L Proietti, C Civitenga, D Mazza, R M Lanzetti, Andrea Ferretti
OBJECTIVE: The best treatment for moderately displaced radial head fractures (Mason type II) still remains controversial. In cases of isolated fractures, there is no evidence that a fragment displacement of ≥ 2 mm gives poor results in conservatively treated fractures. PATIENTS AND METHODS: We retrospectively reviewed 52 patients (31M, 21F) affected by an isolated Mason type II fracture, treated with a long arm cast for two weeks between 2008 and 2013. All patients had practiced sports before being injured...
September 2017: Il Giornale di Chirurgia
https://www.readbyqxmd.com/read/28081555/new-zealand-rugby-health-study-motor-cortex-excitability-in-retired-elite-and-community-level-rugby-players
#12
Gwyn N Lewis, Patria A Hume, Verna Stavric, Scott R Brown, Denise Taylor
AIMS: Rugby union is a high contact sport in which players frequently experience brain injuries. Acute brain injury is associated with altered corticomotor function. However, it is uncertain if long-term exposure to rugby is associated with any alterations in corticomotor function. The aim of the study was to assess measures of corticomotor excitability and inhibition in retired rugby players in comparison to retired non-contact sport players. METHODS: The design was a cross-sectional study with three groups of retired athletes: elite rugby (n=23), community level rugby (n=28) and non-contact sport control (n=22)...
January 13, 2017: New Zealand Medical Journal
https://www.readbyqxmd.com/read/28039125/mechanisms-of-acl-injury-in-professional-rugby-union-a-systematic-video-analysis-of-36-cases
#13
Connor Montgomery, Jeff Blackburn, Daniel Withers, Gregory Tierney, Cathal Moran, Ciaran Simms
BACKGROUND: The mechanisms of ACL injury in rugby are not well defined. AIM: To describe the mechanisms of ACL injury in male professional rugby players using systematic video analysis. METHODS: 36 cases from games played in top professional leagues and international matches were analysed. 5 analysts independently assessed all videos to record the estimated frame/time of initial ground contact, frame/time of ACL tear and a range of play specific variables...
December 30, 2016: British Journal of Sports Medicine
https://www.readbyqxmd.com/read/28033124/variances-in-strength-and-conditioning-practice-in-elite-rugby-union-between-the-northern-and-southern-hemispheres
#14
Thomas W Jones, Andrew Smith, Lindsay S Macnaughton, Duncan N French
The strength and conditioning (S&C) practices in elite Rugby Union (RU) have previously been detailed. There is also research which indicates playing styles can differ between Northern hemisphere (NH) and Southern hemisphere (SH) teams. It is not presently known if these variances in playing styles are reflected in the S&C practices of those supporting NH and SH teams. As such, the present study examines any variances in S&C practices between those supporting NH and SH elite level teams. A validated questionnaire was employed that comprised 7 sections; personal details, physical testing, strength and power development, concurrent training, unique aspects of the programme and any further relevant information regarding prescribed training programmes...
December 20, 2016: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28031755/performance-effects-of-repetition-specific-gluteal-activation-protocols-on-acceleration-in-male-rugby-union-players
#15
Lorna Barry, Ian Kenny, Thomas Comyns
Warm-up protocols have the potential to cause an acute enhancement of dynamic sprinting performance. The purpose of this study was to evaluate the effects of three repetition specific gluteal activation warm-up protocols on acceleration performance in male rugby union players. Forty male academy rugby union players were randomly assigned to one of 4 groups (control, 5, 10 or 15 repetition gluteal activation group) and performed 10 m sprints at baseline and 30 s, 2, 4, 6 and 8 min after their specific intervention protocol...
December 1, 2016: Journal of Human Kinetics
https://www.readbyqxmd.com/read/28028894/attacking-22-entries-in-rugby-union-running-demands-and-differences-between-successful-and-unsuccessful-entries
#16
P Tierney, D P Tobin, C Blake, E Delahunt
Global Positioning System (GPS) technology is commonly utilized in team sports, including rugby union. It has been used to describe the average running demands of rugby union. This has afforded an enhanced understanding of the physical fitness requirements for players. However, research in team sports has suggested that training players relative to average demands may underprepare them for certain scenarios within the game. To date, no research has investigated the running demands of attacking 22 entries in rugby union...
December 28, 2016: Scandinavian Journal of Medicine & Science in Sports
https://www.readbyqxmd.com/read/28019721/the-effect-of-deprivation-on-the-developmental-activities-of-adolescent-rugby-union-players-in-wales
#17
Charles O N Winn, Paul R Ford, Melitta A McNarry, Jason Lewis, Gareth Stratton
The developmental activities of rugby union players and their interaction with deprivation remain to be elucidated. Five-hundred and ninety elite junior rugby union players (14.8 ± 0.5 years) were split into deprivation quintiles. These players subsequently completed a participant history questionnaire to record their involvement in rugby and other sports. Players accumulated 1987 ± 1297 h in rugby between 6 and 15 years of age. During the mini rugby stage (6-10 years of age), players accumulated an average of 113 ± 105, 89 ± 69 and 43 ± 19 h per year in rugby play, practice and competition, respectively...
December 26, 2016: Journal of Sports Sciences
https://www.readbyqxmd.com/read/28000283/maturational-and-social-factors-contributing-to-relative-age-effects-in-school-sports-data-from-the-london-youth-games
#18
K E Reed, D A Parry, G R H Sandercock
Few studies have investigated whether relative age effects (RAEs) exist in school sport. None have sought to test the competing maturational and social-agent hypotheses proposed to explain the RAE. We aimed to determine the presence of RAEs in multiple school sports and examine the contribution of maturational and social factors in commonplace school sports. We analyzed birth dates of n=10645 competitors (11-18 years) in the 2013 London Youth Games annual inter-school multisport competition and calculated odds ratio (OR) for students competing based on their yearly birth quarter (Q1-Q4)...
December 20, 2016: Scandinavian Journal of Medicine & Science in Sports
https://www.readbyqxmd.com/read/27990222/spatial-awareness-is-related-to-moderate-intensity-running-during-a-collegiate-rugby-match
#19
Kyle S Beyer, David H Fukuda, Amelia M Miramonti, Mattan W Hoffman, Ran Wang, Michael B LA Monica, Josh J Riffe, Satoru Tanigawa, Jeffrey R Stout, Jay R Hoffman
The purpose of the present study was to evaluate the relationship between spatial awareness, agility, and distance covered in global positioning system (GPS) derived velocity zone classifications during a collegiate rugby match. Twelve American collegiate rugby union players (mean±SD; age: 21.2±1.4 y; weight: 85.0±16.0 kg; 7 forwards & 5 backs) on a single team volunteered to participate in this investigation. The distances travelled at low (walking/jogging; <2.7m/s), moderate (cruising/striding; 2.7-5...
2016: International Journal of Exercise Science
https://www.readbyqxmd.com/read/27967337/peak-running-intensity-of-international-rugby-implications-for-training-prescription
#20
Jace A Delaney, Heidi R Thornton, John F Pryor, Andrew M Stewart, Ben J Dascombe, Grant M Duthie
PURPOSE: To quantify the duration and position-specific peak running intensities of international rugby union, for the prescription and monitoring of specific training methodologies. METHODS: Global positioning systems (GPS) were used to assess the activity profile of 67 elite-level rugby union players from two separate nations, across 33 international matches. A moving average approach was used to identify the peak relative distance (m∙min(-1)), average acceleration/deceleration (AveAcc; m∙s(-2)) and average metabolic power (Pmet) for a range of durations (1-10 min)...
December 14, 2016: International Journal of Sports Physiology and Performance
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