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https://www.readbyqxmd.com/read/27918679/movement-patterns-and-metabolic-responses-during-an-international-rugby-sevens-tournament
#1
Anthony Couderc, Claire Thomas, Mathieu Lacome, Julien Piscione, Julien Robineau, Rémi Delfour-Peyrethon, Rachel Borne, Christine Hanon
PURPOSE: This study investigated the running-demands and associated metabolic perturbations during an official rugby sevens tournament. METHODS: Twelve elite players participated in seven matches wearing Global Positioning System units. Maximal sprinting speed (MSS) and maximal aerobic speed (MAS) were measured. High-intensity threshold was individualized relative to MAS (>100% of MAS) and very high-intensity distance were reported relative to both MAS and MSS...
December 5, 2016: International Journal of Sports Physiology and Performance
https://www.readbyqxmd.com/read/27918662/effects-of-a-two-week-high-intensity-training-camp-on-sleep-activity-of-professional-rugby-league-athletes
#2
Heidi R Thornton, Grant M Duthie, Nathan W Pitchford, Jace A Delaney, Dean T Benton, Ben J Dascombe
PURPOSE: To investigate the effects of a training camp on the sleep characteristics of professional rugby league players compared to a home period. METHODS: During a seven-day home and 13-day camp period, time in bed (TIB), total sleep time (TST), sleep efficiency (SE) and wake after sleep onset (WASO) were measured using wristwatch actigraphy. Subjective wellness and training loads (TL) were also collected. Differences in sleep and TL between the two periods and the effect of daytime naps on night time sleep were examined using linear mixed models...
December 5, 2016: International Journal of Sports Physiology and Performance
https://www.readbyqxmd.com/read/27918659/importance-of-various-training-load-measures-on-injury-incidence-of-professional-rugby-league-athletes
#3
Heidi R Thornton, Jace A Delaney, Grant M Duthie, Ben J Dascombe
PURPOSE: To investigate the ability of various internal and external training load (TL) monitoring measures to predict injury incidence amongst positional groups within professional rugby league athletes. METHODS: TL and injury data were collected across 3 seasons (2013-2015) from twenty-five players competing in the National Rugby League competition. Daily TL data were included in the analysis, including session rating of perceived exertion (sRPE-TL), total distance (TD), high-speed running distance (HSD; >5m·s(-1)) and high-metabolic power distance (HPD; >20 W·kg(-1))...
December 5, 2016: International Journal of Sports Physiology and Performance
https://www.readbyqxmd.com/read/27918658/countermovement-jump-phase-characteristics-of-senior-and-academy-rugby-league-players
#4
John J McMahon, Shannon Murphy, Sophie J E Rej, Paul Comfort
PURPOSE: Gross measures of countermovement jump (CMJ) performance are commonly used to track maturational changes in neuromuscular function within rugby league (RL). The purpose of this study was to conduct both a gross and a more detailed temporal phase analysis of the CMJ performances of senior and academy RL players, to provide greater insight into how neuromuscular function differs between these groups. METHODS: Twenty senior and fourteen academy (under-19) male RL players performed three maximal effort CMJs on a force platform with forward dynamics subsequently employed to allow gross performance measures and entire kinetic and kinematic-time curves to be compared between groups...
December 5, 2016: International Journal of Sports Physiology and Performance
https://www.readbyqxmd.com/read/27900192/vertical-stiffness-is-not-related-to-anterior-cruciate-ligament-elongation-in-professional-rugby-union-players
#5
Benjamin G Serpell, Jennie M Scarvell, Mark R Pickering, Nick B Ball, Diana Perriman, John Warmenhoven, Paul N Smith
BACKGROUND: Novel research surrounding anterior cruciate ligament (ACL) injury is necessary because ACL injury rates have remained unchanged for several decades. An area of ACL risk mitigation which has not been well researched relates to vertical stiffness. The relationship between increased vertical stiffness and increased ground reaction force suggests that vertical stiffness may be related to ACL injury risk. However, given that increased dynamic knee joint stability has been shown to be associated with vertical stiffness, it is possible that modification of vertical stiffness could help to protect against injury...
2016: BMJ Open Sport & Exercise Medicine
https://www.readbyqxmd.com/read/27900153/does-the-new-rugby-union-scrum-sequence-positively-influence-the-hooker-s-in-situ-spinal-kinematics
#6
Ramesh Swaminathan, Jonathan M Williams, Michael D Jones, Peter S Theobald
BACKGROUND: Scrummaging is unique to rugby union and involves 2 'packs' of 8 players competing to regain ball possession. Intending to serve as a quick and safe method to restart the game, injury prevalence during scrummaging necessitates further evaluation of this environment. AIMS: The aim of this study was to determine the effect of scrummage engagement sequences on spinal kinematics of the hooker. The conditions investigated were: (1) live competitive scrummaging using the new 'crouch, bind, set' sequence; (2) live competitive scrummaging using the old 'crouch touch pause engage' sequence and (3) training scrummaging using a scrum machine...
2016: BMJ Open Sport & Exercise Medicine
https://www.readbyqxmd.com/read/27900149/video-analysis-of-concussion-injury-mechanism-in-under-18-rugby
#7
Sharief Hendricks, Sam O'Connor, Michael Lambert, James C Brown, Nicholas Burger, Sarah Mc Fie, Clint Readhead, Wayne Viljoen
BACKGROUND: Understanding the mechanism of injury is necessary for the development of effective injury prevention strategies. Video analysis of injuries provides valuable information on the playing situation and athlete-movement patterns, which can be used to formulate these strategies. Therefore, we conducted a video analysis of the mechanism of concussion injury in junior-level rugby union and compared it with a representative and matched non-injury sample. METHODS: Injury reports for 18 concussion events were collected from the 2011 to 2013 under-18 Craven Week tournaments...
2016: BMJ Open Sport & Exercise Medicine
https://www.readbyqxmd.com/read/27900148/the-efficacy-of-a-movement-control-exercise-programme-to-reduce-injuries-in-youth-rugby-a-cluster-randomised-controlled-trial
#8
M D Hislop, K A Stokes, S Williams, C D McKay, M England, S P T Kemp, G Trewartha
BACKGROUND: Injuries to youth rugby players have become an increasingly prominent health concern, highlighting the importance of developing and implementing appropriate preventive strategies. A growing body of evidence from other youth sports has demonstrated the efficacy of targeted exercise regimens to reduce injury risk. However, studies have yet to investigate the effect of such interventions in youth contact sport populations like rugby union. OBJECTIVE: To determine the efficacy of an evidence-based movement control exercise programme compared with a sham exercise programme to reduce injury risk in youth rugby players...
2016: BMJ Open Sport & Exercise Medicine
https://www.readbyqxmd.com/read/27900146/a-systematic-approach-to-the-characterisation-of-human-impact-injury-scenarios-in-sport
#9
Thomas Payne, Séan Mitchell, Ben Halkon, Richard Bibb
BACKGROUND: In contact sports (eg, American football or rugby), injuries resulting from impacts are widespread. There have been several attempts to identify and collate, within a conceptual framework, factors influencing the likelihood of an injury. To effectively define an injury event it is necessary to systematically consider all potential causal factors but none of the previous approaches are complete in this respect. AIMS: First, to develop a superior deterministic contextual sequential (DCS) model to promote a complete and logical description of interrelated injury event factors...
2016: BMJ Open Sport & Exercise Medicine
https://www.readbyqxmd.com/read/27893479/complex-training-the-effect-of-exercise-selection-and-training-status-on-post-activation-potentiation-in-rugby-league-players
#10
David J Scott, Massimiliano Ditroilo, Phil Marshall
This study compared the post-activation potentiation (PAP) response of the hex bar deadlift (HBD) and back squat (BS) exercises. The PAP response between different levels of athletes was also compared. Ten professional and ten amateur rugby league players performed two experimental sessions. Participants performed a countermovement jump (CMJ) before and 2, 4, 6, 8, 10, 12, 14 and 16 minutes after a conditioning activity (CA) that contained 1 set of 3 repetitions at 93% 1RM of either HBD or BS. A force platform determined peak power output (PPO), force at PPO, velocity at PPO and jump height of each CMJ...
November 16, 2016: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/27893364/visualizing-rugby-game-styles-using-self-organizing-maps
#11
Peter Lamb, Hayden Croft
Rugby coaches and analysts often use notational data describing match events to assess their team's performance and to devise strategic plans for upcoming matches. However, given the volume and complexity of the data available, it is difficult for them to recognize high-dimensional relationships among the available performance variables. A nonlinear approach using self-organizing maps (SOM) can help visualize the performance of a team and its opponents as well as the subsequent suitability of certain game styles, given the style of the opponent...
November 2016: IEEE Computer Graphics and Applications
https://www.readbyqxmd.com/read/27888213/coach-directed-education-is-associated-with-injury-prevention-behaviour-in-players-an-ecological-cross-sectional-study
#12
James C Brown, Sugnet Gardner-Lubbe, Michael Ian Lambert, Willem van Mechelen, Evert Verhagen
BACKGROUND/AIM: Rugby union ('rugby') presents an above-average risk of injury to participants. BokSmart is a South African nationwide intervention that aims to reduce rugby-related injuries in players. This is achieved by educating coaches and referees to improve injury behaviour of players. Thus, the aim of this study was to assess if the receipt of injury-prevention education was associated with player behaviour. METHODS: Junior (n=2279) and senior (n=1642) players, who attended merit-based South African Rugby tournaments (2008-2012), completed an anonymous questionnaire...
November 25, 2016: British Journal of Sports Medicine
https://www.readbyqxmd.com/read/27886831/finger-injuries-in-football-and-rugby
#13
REVIEW
Kate E Elzinga, Kevin C Chung
Football and rugby athletes are at increased risk of finger injuries given the full-contact nature of these sports. Some players may return to play early with protective taping, splinting, and casting. Others require a longer rehabilitation period and prolonged time away from the field. The treating hand surgeon must weigh the benefits of early return to play for the current season and future playing career against the risks of reinjury and long-term morbidity, including post-traumatic arthritis and decreased range of motion and strength...
February 2017: Hand Clinics
https://www.readbyqxmd.com/read/27880073/an-interprofessional-health-assessment-program-in-rural-amateur-sport
#14
Sandra Grace, Rosanne Coutts
Effective interprofessional learning (IPL) in multisectoral collaborations such as those linking health services within communities can provide an authentic experience for students and also appears to be the most effective way to achieve health changes in targeted population groups. The aim of this study was to facilitate the IPL of students at a rural university in a multisectoral health assessment programme and to promote health in players of rural amateur sport. Two rural rugby league teams took part in three pre-season health assessments conducted by general medical practitioners, practice nurses, and nursing, osteopathy, and exercise science students...
November 23, 2016: Journal of Interprofessional Care
https://www.readbyqxmd.com/read/27870696/strength-and-conditioning-and-concurrent-training-practices-in-elite-rugby-union
#15
Thomas W Jones, Andrew Smith, Lindsay S Macnaughton, Duncan N French
Jones, TW, Smith, A, Macnaughton, LS, and French, DN. Strength and Conditioning and Concurrent Training Practices in Elite Rugby Union. J Strength Cond Res 30(12): 3354-3366, 2016-There is limited published research on strength and conditioning (S&C) practices in elite rugby union (RU). Information regarding testing batteries and programme design would provide valuable information to both applied practitioners and researchers investigating the influence of training interventions or preperformance strategies...
December 2016: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/27868475/collision-count-in-rugby-union-a-comparison-of-micro-technology-and-video-analysis-methods
#16
Cillian Reardon, Daniel P Tobin, Peter Tierney, Eamonn Delahunt
The aim of our study was to determine if there is a role for manipulation of g force thresholds acquired via micro-technology for accurately detecting collisions in rugby union. In total, 36 players were recruited from an elite Guinness Pro12 rugby union team. Player movement profiles and collisions were acquired via individual global positioning system (GPS) micro-technology units. Players were assigned to a sub-category of positions in order to determine positional collision demands. The coding of collisions by micro-technology at g force thresholds between 2 and 5...
November 21, 2016: Journal of Sports Sciences
https://www.readbyqxmd.com/read/27868309/an-examination-of-how-alcohol-brands-use-sport-to-engage-consumers-on-social-media
#17
Kate Westberg, Constantino Stavros, Aaron C T Smith, Geoff Munro, Kevin Argus
INTRODUCTION AND AIMS: To examine how alcohol brands use sport in their communication activities on social media. Despite extensive research exploring alcohol advertising and sponsorship through sport, minimal attention has been given to digital platforms. DESIGN AND METHODS: This study undertakes a qualitative content analysis to examine the social media activity of alcohol brands sponsoring the three largest spectator sports in Australia: Australian rules football, rugby league and cricket...
November 20, 2016: Drug and Alcohol Review
https://www.readbyqxmd.com/read/27863454/sensory-organisation-and-reactive-balance-control-of-amateur-rugby-players-a-cross-sectional-study
#18
Gary C C Chow, Joanne W Y Chung, Ada W W Ma, Duncan J Macfarlane, Shirley S M Fong
PURPOSE: This study compared the sensory organisation and reactive balance control of amateur rugby players and a control group. METHODS: Forty-one amateur rugby players (22 males: 19 females; mean height ± SD = 168.8 ± 8.8 cm; mean weight ± SD = 63.9 ± 12.5 kg) and 31 control participants (22 males: 9 females; mean height ± SD = 171.5 ± 10.3 cm; mean weight ± SD = 63.8 ± 10.3 kg) completed the study...
November 18, 2016: European Journal of Sport Science
https://www.readbyqxmd.com/read/27862527/prevalence-of-head-injury-and-medically-diagnosed-concussion-in-junior-level-community-based-australian-rules-football
#19
Mark D Hecimovich, Doug King
AIM: For junior-level Australian Rules Football there is a paucity of head injury and concussion surveillance data; thus, the primary aim was to document head injury and concussion incidence in participants aged 9-17 years with a secondary aim to identify the mechanism-of-injury. METHODS: A prospective cohort study in which a designated representative for each of the 41 teams recorded on a weekly basis the number of head injuries suspected of being a concussion, diagnosed concussions and the mechanism-of-injury during competition games over the course of a 12-game season...
November 10, 2016: Journal of Paediatrics and Child Health
https://www.readbyqxmd.com/read/27855701/left-ventricular-remodeling-and-the-athlete-s-heart-irrespective-of-quality-load-training
#20
Giorgio Galanti, Laura Stefani, Gabriele Mascherini, Valentina Di Tante, Loira Toncelli
BACKGROUND: Regular physical exercise determines a progressive increase of the cardiac mass known as adaptive hypertrophy. Up to now, two morphological echocardiographic heart patterns of athletes have been described by Morganroth in 1975: predominant augmentation of wall thickness, and major cavity size in chamber dimensions in the case of prevalent static or dynamic components. The aim of the study was to follow up the impact of physical training on heart morphology and function in a group of elite soccer and rugby players for at least five years...
November 17, 2016: Cardiovascular Ultrasound
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