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https://www.readbyqxmd.com/read/29893834/competing-teammates-food-in-new-zealand-sports-settings
#1
Mary-Ann Carter, Louise N Signal, Richard Edwards, Janet Hoek
Despite the global popularity of sport, we know surprisingly little about food in sports settings. This two-phased study analysed the foods available in New Zealand sports settings. Phase one included a systematic literature review and 18 interviews with key informants from national and regional sporting organizations. Phase two involved 37 key informant interviews with stakeholders from two exemplar sports, rugby and netball and direct observations at netball and rugby venues. This study found most foods and beverages at New Zealand sports events were energy-dense and nutrient-poor...
June 9, 2018: Health Promotion International
https://www.readbyqxmd.com/read/29893600/muscle-glycogen-utilisation-during-an-australian-rules-football-game
#2
Harry E Routledge, Jill J Leckey, Matt J Lee, Andrew Garnham, Stuart Graham, Darren Burgess, Louise M Burke, Robert M Erskine, Graeme L Close, James P Morton
PURPOSE: To better understand the carbohydrate (CHO) requirement of Australian Football (AF) match play by quantifying muscle glycogen utilisation during an in-season AF match. METHODS: After a 24 h CHO loading protocol of 8 g/kg and 2 g/kg in the pre-match meal, two elite male forward players had biopsies sampled from m. vastus lateralis before and after participation in a South Australian Football League game. Player A (87.2kg) consumed water only during match play whereas player B (87...
June 12, 2018: International Journal of Sports Physiology and Performance
https://www.readbyqxmd.com/read/29893598/the-effect-of-speed-power-and-strength-training-and-a-group-motivational-presentation-on-physiological-markers-of-athlete-readiness-a-case-study-in-professional-rugby
#3
Benjamin G Serpell, Joshua Strahorn, Carmen Colomer, Andrew McKune, Christian Cook, Kate Pumpa
OBJECTIVE: This study examined the effect of a physical treatment (speed, power and strength training) and psychosocial treatment (group motivational presentation) on salivary testosterone (sal-T), salivary cortisol (sal-C), and sal-T to sal-C ratio (T:C) in professional rugby. METHODS: Fourteen male rugby players aged 25.9 ± 2.5 years, height 186.1 ± 6.7 cm, and body mass 104.1 ± 12.7 kg participated in this study. Testing occurred across two days on two separate occasions (week one and week two)...
June 12, 2018: International Journal of Sports Physiology and Performance
https://www.readbyqxmd.com/read/29889607/assessing-tackle-performance-using-a-novel-collision-sport-simulator-in-comparison-to-a-live-one-on-one-tackling-drill
#4
Nicholas Burger, Michael Ian Lambert, Harry Hall, Sharief Hendricks
It is necessary to study the rugby tackle as it is associated with successful performance outcomes and is responsible for the majority of contact injuries. A novel collision sport simulator was developed to study tackle performance. The main aim of this validation study was to assess tackle technique performance between two different conditions: simulator versus a standardised one-on-one tackle drill previously used to assess technique. Tackling proficiency was assessed using a list of technical criteria. Mean scores, standard deviations and Cohen's d effect sizes were calculated...
June 11, 2018: Journal of Sports Sciences
https://www.readbyqxmd.com/read/29878844/epidemiology-of-injury-in-elite-english-schoolboy-rugby-union-a-3-year-study-comparing-different-competitions
#5
Craig Barden, Keith Stokes
CONTEXT:   Injury risks in professional and community rugby union have been extensively described; however, less is known about injury epidemiology at the schoolboy level. OBJECTIVE:   To investigate the injury risk in English schoolboy rugby union matches, comparing an elite competition (Achieving Academic and Sporting Excellence [AASE]) with subelite matches (non-AASE). DESIGN:   Retrospective cohort study. SETTING:   Rugby union academy, consisting of 16- to 19-year-old males, based at an elite sports college in England...
June 7, 2018: Journal of Athletic Training
https://www.readbyqxmd.com/read/29877673/post-activation-potentiation-improves-athletic-performance-without-affecting-plasma-oxidative-level
#6
Tania Gamberi, Francesca Magherini, Tania Fiaschi, Pietro A Modesti, Massimo Gulisano, Mario Marella, Paolo Bosi, Paolo Spicuglia, Marta Radini, Alessandra Modesti
BACKGROUND: Several authors reported evidences for Post Activation Potentiation but so far, few studies suggested suitable methods for use it to improve performance. On the other hand, it is well known that a fatiguing exercise can leads to a temporary imbalance between the production of reactive oxygen species (ROS) and their disposal. The purpose of our research was to evaluate the effects on performance and plasma oxidative stress of a specific program of conditioning in replacement of traditional sequences of warm-up...
June 7, 2018: Journal of Sports Medicine and Physical Fitness
https://www.readbyqxmd.com/read/29874025/erratum-schuster-2018
#7
(no author information available yet)
In Schuster J, Howells D, Robineau J, et al, “Physical-preparation recommendations for elite rugby sevens performance,” Int J Sports Physiol Perform. 2018;13(3):255–267, https://doi.org/10.1123/ijspp.2016-0728, an error was introduced that changed the meaning of the first sentence of the abstract. The word over was changed to more than. The sentence should read “Rugby sevens, a sport new to the Olympics, features high-intensity intermittent running and contact efforts over short match durations, normally 6 times across 2 to 3 d in a tournament format...
April 1, 2018: International Journal of Sports Physiology and Performance
https://www.readbyqxmd.com/read/29870281/return-to-play-after-concussion-state-of-knowledge-frequency-of-use-and-application-barriers-of-guidelines-among-decision-makers-in-rugby
#8
Daniel Niederer, Tobias Engeroff, Kevin Lange, Lutz Vogt, Winfried Banzer
Validated strategies and guidelines for a safe and individualized diagnosis and return-to-play (RTP) after concussion in rugby are needed. Little is known about the state of knowledge, frequency of use and application barriers of state-of-the-art guidelines among decision-makers in professional or semi-professional rugby teams. Participants (n = 195) from the coaching team (head coach, assistance coach, athletic coach), the medical team (physiotherapist, physician, rehabilitation therapist, neuropsychologist), or from the officials of a professional or semi-professional rugby team (top three major leagues in Germany), filled in a questionnaire on their knowledge, frequency of use and application barriers of evidence-based guidelines (Graduated RTP protocol and The 5R)...
June 5, 2018: Brain Injury: [BI]
https://www.readbyqxmd.com/read/29864051/concurrent-validity-of-a-rugby-specific-yo-yo-intermittent-recovery-test-level-1-for-assessing-match-related-running-performance
#9
Nick Dobbin, Jamie Highton, Samantha L Moss, Richard Hunwicks, Craig Twist
Dobbin, N, Highton, J, Moss, SL, Hunwicks, R, and Twist, C. Concurrent validity of a rugby-specific Yo-Yo intermittent recovery test (level 1) for assessing match-related running performance. J Strength Cond Res XX(X): 000-000, 2018-This study investigated the concurrent validity of a rugby-specific high-intensity intermittent running test against the internal, external, and perceptual responses to simulated match play. Thirty-six rugby league players (age 18.5 ± 1.8 years; stature 181.4 ± 7.6 cm; body mass 83...
June 1, 2018: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/29845832/intensity-level-and-on-court-role-of-wheelchair-rugby-players-during-competition
#10
Benoit Borel, Justine Lacroix, Jean-Christophe Daviet, Stéphane Mandigout
BACKGROUND: This study aims at quantifying the level of physical activity of wheelchair rugby players during matches in order to compare defensives players (DP) and offensives players (OP) profiles. Our hypothesis is that OP would present a higher energy expenditure and intensity level values during matches than DP, due to specific actions according to the on- court role. METHODS: Fifty-two players, including 24 DP and 28 OP (mean age of 34 ± 9 years), from eight French teams involved in the national elite championship and in the French national cup, participated...
May 29, 2018: Journal of Sports Medicine and Physical Fitness
https://www.readbyqxmd.com/read/29809104/ankle-sprain-has-higher-occurrence-during-the-later-parts-of-matches-systematic-review-with-meta-analysis
#11
Marcos de Noronha, Eleisha K Lay, Madelyn R McPhee, George Mnatzaganian, Guilherme S Nunes
CONTEXT: Ankle sprains are common injuries in sports, however it is unclear whether they are more likely to occur in a specific period of a sporting game. OBJECTIVES: To systematically review the literature investigating when in a match ankle sprains most likely occurred. EVIDENCE ACQUISITION: The databases CINAHL, EMBASE, MEDLINE and SPORTDiscus were searched up to August 2016, with no restriction of date or language. The search targeted studies that presented data on the time of occurrence of ankle sprains during sports matches...
May 29, 2018: Journal of Sport Rehabilitation
https://www.readbyqxmd.com/read/29809068/1rm-measures-or-maximum-bar-power-output-which-is-more-related-to-sport-performance
#12
Irineu Loturco, Timothy Suchomel, Chris Bishop, Ronaldo Kobal, Lucas A Pereira, Michael McGuigan
PURPOSE: This study compared the associations between optimum power loads and 1-repetition maximum (1RM) values (assessed in half-squat [HS] and jump squat [JS] exercises) and multiple performance measures in elite athletes. METHODS: Sixty-one elite athletes (fifteen Olympians) from four different sports (track and field [sprinters and jumpers], rugby sevens, bobsled, and soccer) performed squat and countermovement jumps, HS exercise (for assessing 1RM), HS and JS exercises (for assessing bar-power output), and sprint tests (60-m for sprinters and jumpers and 40-m for the other athletes)...
May 29, 2018: International Journal of Sports Physiology and Performance
https://www.readbyqxmd.com/read/29809056/effects-of-athlete-dependent-traits-on-joint-and-system-countermovement-jump-power
#13
Kym J Williams, Dale W Chapman, Elissa J Phillips, Nick Ball
PURPOSE: To establish the influence of athlete-dependent characteristics on the generation and timing of system and individual joint powers during a countermovement jump (CMJ). METHODS: Male national representative athletes from Volleyball ([VB] n=7), Basketball ([BB], n=6) and Rugby Union ([RU] n=7) performed a set of three CMJ's at relative barbell loads of 0, 10, 20, 30, and 40% of absolute back squat strength. Ground reaction forces and joint kinematics were captured using a 16 camera motion capture system integrated with two in-ground force plates...
May 29, 2018: International Journal of Sports Physiology and Performance
https://www.readbyqxmd.com/read/29806987/body-mass-changes-during-training-in-elite-rugby-union-is-a-single-test-of-hydration-indices-reliable
#14
Katherine Elizabeth Black, Alistair David Black, Dane Baker, Kirsty Fairbairn
There is limited research studying fluid and electrolyte balance in rugby union players, and a paucity of information regarding the test-retest reliability. This study describes the fluid balance of elite rugby union players across multiple squads and the reliability of fluid balance measures between two equivalent training sessions. Sixty-one elite rugby players completed a single fluid balance testing session during a game simulation training session. A subsample of 21 players completed a second fluid balance testing session during an equivalent training session...
May 28, 2018: European Journal of Sport Science
https://www.readbyqxmd.com/read/29804653/entropy-measures-detect-increased-movement-variability-in-resistance-training-when-elite-rugby-players-use-the-ball
#15
Gerard Moras, Bruno Fernández-Valdés, Jairo Vázquez-Guerrero, Julio Tous-Fajardo, Juliana Exel, Jaime Sampaio
OBJECTIVES: This study described the variability in acceleration during a resistance training task, performed in horizontal inertial flywheels without (NOBALL) or with the constraint of catching and throwing a rugby ball (BALL). DESIGN AND METHODS: Twelve elite rugby players (mean±SD: age 25.6±3.0years, height 1.82±0.07m, weight 94.0±9.9kg) performed a resistance training task in both conditions (NOBALL AND BALL). Players had five minutes of a standardized warm-up, followed by two series of six repetitions of both conditions: at the first three repetitions the intensity was progressively increased while the last three were performed at maximal voluntary effort...
May 24, 2018: Journal of Science and Medicine in Sport
https://www.readbyqxmd.com/read/29803736/tackle-technique-of-rugby-union-players-during-head-impact-tackles-compared-to-injury-free-tackles
#16
Demi Davidow, Ken Quarrie, Wayne Viljoen, Nicholas Burger, Clint Readhead, Mike Lambert, Ben Jones, Sharief Hendricks
OBJECTIVES: The majority of head injuries in rugby union occur during tackles in which the head receives an impact. Head impacted tackles may be a result of poor tackle technique. Therefore, the purpose of this study was to analyse ball-carrier and tackler technique proficiency in head impacted tackles and compare the technique proficiency to successfully completed tackles in real-match situations. DESIGN: Retrospective video analysis. METHODS: Video footage of head impacts with the 'head impacted player' (n=157) and the opposing player 'impacting player' (n=156) were scored for contact technique using a list of technical criteria and compared to contact technique scores of role and tackle-type matched injury-free, successful tackles (n=170)...
April 20, 2018: Journal of Science and Medicine in Sport
https://www.readbyqxmd.com/read/29801755/can-tackle-height-influence-head-injury-assessment-risk-in-elite-rugby-union
#17
Gregory J Tierney, Ciaran K Simms
OBJECTIVES: Tackle height laws are an area of controversy in rugby union. It is reported that the tackler is at most risk of a Head Injury Assessment (HIA). Therefore, the aim of this study was to use match video evidence of tackles in elite level rugby union to examine the effect of tackle heights on HIA risk for the tackler. DESIGN: Qualitative observational case-control study. METHODS: Each HIA (n=74) and control tackle (n=965) was categorised based on tackle direction (front- or side-on), tackle type (arm, shoulder or smother) and tackle height (upper trunk, mid-trunk, lower trunk, upper leg or lower leg)...
May 22, 2018: Journal of Science and Medicine in Sport
https://www.readbyqxmd.com/read/29797099/the-use-of-sideline-video-review-to-facilitate-management-decisions-following-head-trauma-in-super-rugby
#18
Andrew J Gardner, Ryan Kohler, Warren McDonald, Gordon W Fuller, Ross Tucker, Michael Makdissi
BACKGROUND: Sideline video review has been increasingly used to evaluate risk of concussive injury during match play of a number of collision sports, with the view to reducing the incidence of match play concussion injuries. The purpose of this study was to evaluate the effectiveness of sideline video review for identifying and evaluating head impact events in Rugby Union. METHODS: All Australian teams' 2015 Super Rugby season matches were studied. Meaningful head impact events (HIEs) were identified, comprising events identified and acted upon during matches and events identified through a post-season retrospective review...
May 24, 2018: Sports Medicine—Open
https://www.readbyqxmd.com/read/29796108/arthroscopic-repair-of-bony-bankart-lesions-in-collision-athletes
#19
Nasir Shah, Muhammed Nasir Nadiri, Emma Torrance, Lennard Funk
Background: The present study aimed to report the outcomes of acute and subacute arthroscopic bony Bankart repairs in collision athletes. Methods: We reviewed 22 consecutive rugby players with traumatic anterior glenohumeral instability who underwent arthroscopic bony Bankart repair within 4 months of injury over a 2-year period. All lesions were less than 25% of the glenoid bony area. Results: A significant improvement was noted at three months and was maintained at 28 months postoperatively...
July 2018: Shoulder & Elbow
https://www.readbyqxmd.com/read/29793123/the-beighton-score-as-a-predictor-of-brighton-criteria-in-sport-and-dance
#20
Ross Armstrong, Dr Matt Greig
OBJECTIVES: To determine the efficacy of using the Beighton joint hypermobility score as a predictor of Brighton criteria components, considering the influence of gender and sports participation. DESIGN: Cross sectional study design. SETTING: A University. PARTICIPANTS: Sixty-five female rugby players, 38 male rugby players, 61 netball players, 42 female dancers, 40 male controls and 40 female controls. MAIN OUTCOME MEASURES: The Beighton score was assessed using the Beighton and Horan Joint Mobility Index...
April 20, 2018: Physical Therapy in Sport
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