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Amy E Mendham, Rob Duffield, Aaron J Coutts, Frank E Marino, Andriy Boyko, Andrew J McAinch, David John Bishop
PURPOSE: This study assessed the mitochondrial related signaling responses to a single bout of non-contact, modified football (touch rugby), played as small-sided games (SSG), or cycling (CYC) exercise in sedentary, obese, middle-aged men. METHOD: In a randomized, cross-over design, nine middle-aged, sedentary, obese men completed two, 40-min exercise conditions (CYC and SSG) separated by a 21-d recovery period. Heart rate (HR) and Ratings of Perceived Exertion were collected during each bout...
October 14, 2016: Journal of Applied Physiology
Antonio Miguel Cruz-Ferreira, Eduardo Miguel Cruz-Ferreira, Luiz Miguel Santiago, Luis Taborda Barata
OBJECTIVES: In 2016 the Rugby Union variant of sevens will enter the official Olympic Programme. Until now, most of injury surveillance studies in Rugby Union focus on elite 15-a-side cohorts, with reported injury incidence rates reaching 96 per 1000 player-match-hours, and mean severity set at 20 days. Sparse data is available regarding rugby sevens. The aim of this study was to systematically review available data regarding the epidemiology of injuries in senior male rugby sevens. METHODS: Electronic databases (Pubmed, Google Scholar, SCOPUS, Scielo and IndexRMP) were searched in September 2015, complemented by manual searches of bibliographies and relevant 'grey literature'...
October 14, 2016: Physician and Sportsmedicine
A J Gardner, R M N Kohler, C R Levi, G L Iverson
A new concussion interchange rule (CIR) was introduced in 2014 for the National Rugby League and National Youth Competition (NYC). The CIR allows a player suspected of having sustained a concussion to be removed from play and assessed without an interchange being tallied against the player's team. Participants included all NYC players who used the CIR during the 2014 season. 2 raters completed video analysis of 131 (of a total of 156 reported) uses of the CIR, describing injury characteristics, situational factors, and concussion signs...
October 13, 2016: International Journal of Sports Medicine
Gregory Roe, Joshua Darrall-Jones, Christopher Black, William Shaw, Kevin Till, Ben Jones
PURPOSE: The purpose of this study was to investigate the validity of timing gates and 10 Hz GPS units (Catapult Optimeye S5) against a criterion measure (50 Hz radar gun) for assessing maximum sprint velocity (Vmax). METHODS: Nine male professional rugby union players performed three maximal 40 m sprints with three minutes rest between each effort with Vmax assessed simultaneously via timing gates, 10 Hz GPSOpen (Openfield software), GPSSprint (Sprint software) and radar gun...
October 13, 2016: International Journal of Sports Physiology and Performance
Gregory Roe, Joshua Darrall-Jones, Kevin Till, Padraic Phibbs, Dale Read, Jonathon Weakley, Ben Jones
PURPOSE: The purpose of this study was to evaluate changes in performance of a 6-second cycle ergometer test (CET) and countermovement jump (CMJ) during a 6-week training block in professional rugby union players. METHODS: Twelve young professional rugby union players performed two CET and CMJ on the first and fourth morning of every week prior to the commencement of daily training during a 6-week training block. Standardised changes in the highest score of two CET and CMJ efforts were assessed using linear mixed modelling and magnitude-based inferences...
October 13, 2016: International Journal of Sports Physiology and Performance
Jamie S Allsop, Tomas Vaitkus, Dannette Marie, Lynden K Miles
Whether it be a rugby team or a rescue crew, ensuring peak group performance is a primary goal during collective activities. In reality, however, groups often suffer from productivity losses that can lead to less than optimal outputs. Where researchers have focused on this problem, inefficiencies in the way team members coordinate their efforts has been identified as one potent source of productivity decrements. Here, we set out to explore whether performance on a simple object movement task is shaped by the spontaneous emergence of interpersonally coordinated behavior...
2016: Frontiers in Psychology
Matthew Tredrea, Ben Dascombe, Colin E Sanctuary, Aaron Terrence Scanlan
This study aimed to identify attributes that discriminate selected from non-selected players and predict selection into a rugby league development programme in older adolescent players. Anthropometric, performance and psychological attributes were measured in under-16 (N = 100) and under-18 (N = 60) rugby league players trialling for selection into a development programme with a professional Australian club. Sprint times (P < 0.001), predicted VO2max (P = 0.002) and push-ups1 min (P = 0.004) were superior in selected under-16 players, and sprint times (P ≤ 0...
October 11, 2016: Journal of Sports Sciences
Gregory J Tierney, John Lawler, Karl Denvir, Kurt McQuilkin, Ciaran K Simms
PRIMARY OBJECTIVES: To conduct video and statistical analysis on Rugby Union play, focusing mainly on the tackle, to establish the player to player configurations for significant direct head impacts and non-direct head impacts. RESEARCH DESIGN: Quantitative, observational cohort study. METHODS AND PROCEDURES: Video analysis of 52 significant direct head impacts (31 Tackle, 10 Ruck, 7 Dive and 4 Ground) and 40 non-direct head impact tackles from 2014/15 International Rugby Union matches...
August 11, 2016: Brain Injury: [BI]
Pamela J Magee, Alison M Gallagher, Jacqueline M McCormack
Although dehydration of ≥2% body weight (BW) loss significantly impairs endurance performance, dehydration remains prevalent among athletes and may be owing to a lack of knowledge in relation to fluid requirements. The aim of this study was to assess the hydration status of university/club level athletes (n=430) from a range of sports/activities (army officer cadet training; bootcamp training; cycling; Gaelic Athletic Association camogie, football and hurling; golf; hockey; netball; rugby; running (sprinting and endurance); Shotokan karate and soccer) immediately before and after training/competition and to assess their nutritional knowledge...
October 6, 2016: International Journal of Sport Nutrition and Exercise Metabolism
F Javier Núñez, Luis J Suarez-Arrones, Paul Cater, Alberto Mendez-Villanueva
The aim of this study was to examine the kinematics and kinetics (force, velocity and acceleration) and blood lactate concentration of the Versapulley (VP) device in comparison with free weight (FW) exercise at a similar external load. Fifteen rugby players randomly performed two training sessions of 6 sets of 6 repetitions with 20 s of recovery in between sets of the high pull exercise with the VP and the FW. Both training sessions were separated by 72 h. Barbell displacement (cm.), peak velocity (m/s), peak acceleration (m/s(2)), mean propulsive velocity (m/s), mean propulsive acceleration (m/s(2)), propulsive phase (%), mean and maximal force (Newtons) were continuously recorded during each repetition...
September 6, 2016: International Journal of Sports Physiology and Performance
V C Altmann, B E Groen, A L Hart, Y C Vanlandewijck, J van Limbeek, N L W Keijsers
In Paralympic sport, classification of impairment is needed to prevent a one-sided and predictable outcome of competition, in which the least impaired athlete has the best chance to win. To develop evidence-based classification in wheelchair rugby, the impact of trunk impairment, measured by the Trunk Impairment Classification (TIC), on performance-determining activities was assessed. Arm impairment was analyzed as a covariant. Fifty-five athletes, 21 with TIC score 0, 13 with TIC score 0.5, 11 with TIC score 1...
October 2, 2016: Scandinavian Journal of Medicine & Science in Sports
Ardalan Akbari, Manraj K S Heran, Kourosh Afshar
This case report explores the efficacy of simultaneous use of endourological and radiological methods to assess and manage high-grade renal trauma. A male rugby player was diagnosed with Grade 4 blunt renal trauma. A segment of the patient's kidney was isolated from the main renal pelvis with intact perfusion. This resulted in urinary extravasation. Ureteral stenting and angioembolization were used to treat the patient's severe symptoms. Angioembolization ablated functional tissue that was causing a persistent urinary leak...
September 2016: Canadian Urological Association Journal, Journal de L'Association des Urologues du Canada
Dinesh Sirisena, Joy Walter, Joanne Probert
No abstract text is available yet for this article.
September 28, 2016: British Journal of Sports Medicine
Thierry Weissland, Pierre-Marie Leprêtre, Steven Bruere, Gwendal Troadec, Michel Terrefond
OBJECTIVE: Evaluations of physical fitness and efficiency to wheelchair propulsion are common in rehabilitation center. The multistage field test (MFT) was developed for wheelchair users and predicts the peak value of oxygen consumption [Formula: see text] , independently of their impairment [1]. In an earlier study, we did not find significant difference between VO2peak estimated by the Vanderthommen's formula and measured VO2peak [2] of trained wheelchair basketball players. MATERIAL/PATIENTS AND METHODS: Comparatively to wheelchair basketball, the athlete's cardio-respiratory and muscular limitations are greater higher in wheelchair rugby...
September 2016: Annals of Physical and Rehabilitation Medicine
Martin Sullivan, Ethan J Fraser, James Linklater, Craig Harris, Kieran Morgan
: Background Talar osteochondral lesions represent challenging clinical entities, particularly in high-demand athletes. Surgical treatment of large lesions often requires a 2-step procedure, or the use of osteotomy in the case of autologous osteochondral transfer, which can delay return to sport. Methods A professional rugby league player underwent surgery for a complex injury to the ankle. A talar osteochondral lesion with a maximal diameter of 15 mm was treated in an arthroscopic fashion using the cartilage taken from the completely displaced osteochondral fragment...
September 22, 2016: Foot & Ankle Specialist
Osman Hassan Ahmed, Eric E Hall
BACKGROUND/AIMS: Concussion is widely discussed in online sports news articles, but the terms used to report this injury vary. This study aimed to use a systematic search strategy and explore the description of sports concussion in online sports news articles. METHODS: A systematic approach was employed to obtain online articles related to sports concussion from four sports associated with concussion (hockey, football, soccer, and rugby). Included articles were evaluated for the descriptors used in relation to concussion and possible consequences associated with concussion...
July 15, 2016: Physical Therapy in Sport
Joe Piggin, Allyson Pollock
No abstract text is available yet for this article.
September 15, 2016: British Journal of Sports Medicine
Scott Cheatham, Morey J Kolber, Kathryn Kumagai Shimamura
: Clinical Scenario: The differential diagnosis of groin pain can be very challenging due to the many causative pathologies. Osteitis pubis is one pathology that is becoming more recognized in athletes who participate in sports such as soccer, ice hockey, rugby, and football.(1) Conservative non-operative treatment is often prescribed first prior to surgical intervention. Of particular interest, are the outcomes of non-operative rehabilitation programs and their effectiveness to return athletes to pre-injury levels of participation...
August 24, 2016: Journal of Sport Rehabilitation
Thomas Dos'Santos, Christopher Thomas, Paul A Jones, Paul Comfort
PURPOSE: The purpose of this study was to investigate the within-session reliability of bilateral and unilateral stance isometric mid-thigh pull (IMTP) force-time characteristics including peak force (PF), relative PF and impulse at time bands (0-100, 0-200, 0-250 and 0-300 ms); and to compare isometric force-time characteristics between right and left and dominant (D) and non-dominant (ND) limbs. METHODS: Professional male Rugby league and multi-sport collegiate male athletes (n=54, age 23...
September 6, 2016: International Journal of Sports Physiology and Performance
Jason C Tee, Mike I Lambert, Yoga Coopoo
PURPOSE: In team sports, fatigue is manifested by a self-regulated decrease in movement distance and intensity. There is currently limited information on the effect of fatigue on movement patterns in rugby union match play, particularly for players in different position groups (backs vs. forwards). This study investigated the effect of different match periods on movement patterns of professional rugby union players. METHODS: Global positioning system (GPS) data were collected from 46 professional match participations to determine temporal effects on movement patterns...
September 6, 2016: International Journal of Sports Physiology and Performance
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