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Rugby AND (strength OR Speed)

Brendyn B Appleby, Harry Banyard, Prue Cormie, Stuart J Cormack, Robert U Newton
Appleby, BB, Banyard, H, Cormie, P, Cormack, SJ, and Newton, RU. Validity and reliability of methods to determine barbell displacement in heavy back squats: Implications for velocity-based training. J Strength Cond Res XX(X): 000-000, 2018-The purpose of this study was to investigate the validity and reliability of methods for determining barbell displacement during heavy back squats. Twelve well-trained rugby union players (mean ± SD 1 repetition maximum [1RM] 90° squat = 196.3 ± 29.2 kg) completed 2 sets of 2 repetitions at 70, 80, and 90% of 1RM squats...
August 8, 2018: Journal of Strength and Conditioning Research
Sarah Whitehead, Kevin Till, Dan Weaving, Ben Jones
BACKGROUND: Quantifying the peak match demands within the football codes is useful for the appropriate prescription of external training load. Wearable microtechnology devices can be used to identify the peak match demands, although various methodologies exist at present. OBJECTIVES: This systematic review aimed to identify the methodologies and microtechnology-derived variables used to determine the peak match demands, and to summarise current data on the peak match demands in the football codes...
August 7, 2018: Sports Medicine
Romain Dubois, Mark Lyons, Thierry Paillard, Olivier Maurelli, Jacques Prioux
Dubois, R, Lyons, M, Paillard, T, Maurelli, O, and Prioux, J. Influence of weekly workload on physical, biochemical and psychological characteristics in professional rugby union players over a competitive season. J Strength Cond Res XX(X): 000-000, 2018-This study aimed to (a) quantify the physical workload (P-WL) during training and games throughout the professional rugby season and (b) analyze the influence of the season period and weekly-WL, at short (acute) and moderate (chronic) terms, on physical, biochemical, and psychological responses during the season...
August 2, 2018: Journal of Strength and Conditioning Research
Ben Ashworth, Patrick Hogben, Navraj Singh, Laura Tulloch, Daniel D Cohen
Objectives: Lower limb isometric tests are used to assess strength and strength asymmetries and monitor reductions in muscle force that may contribute to loss of performance and increase injury risk. Isometric tests in the upper body may be appropriate to monitor neuromuscular performance of the shoulder joint in sports involving contact and overhead actions. The aim of this study was to determine the reliability of a novel upper body isometric strength test. Methods: Eighteen elite rugby players (age 22...
2018: BMJ Open Sport & Exercise Medicine
Barry S Mason, Riemer J K Vegter, Thomas A W Paulson, Dylan Morrissey, Jan W van der Scheer, Victoria L Goosey-Tolfrey
BACKGROUND: Shoulder pain is the most common complaint for wheelchair athletes. Scapular orientation and dyskinesia are thought to be associated with shoulder pathology, yet no previous studies have examined the bilateral scapula kinematics of wheelchair athletes during propulsion. RESEARCH QUESTION: To examine bilateral scapular kinematics of highly trained wheelchair rugby (WR) players and any associations with self-reported shoulder pain during everyday wheelchair propulsion...
July 20, 2018: Gait & Posture
Andrew A Flatt, Daniel Howells
OBJECTIVES: To evaluate weekly heart rate variability (HRV) responses to varying training load among an Olympic rugby sevens team and to assess whether HRV responses informed on training adaptation. DESIGN: Retrospective. METHODS: Natural logarithm of the root mean square of successive differences (LnRMSSD), psychometrics and training load from a rugby sevens team (n=12 males) over a 3-week period were retrospectively analyzed. Week 1 served as baseline while weeks 2 and 3 consisted of peak training loads from the 2016 Olympic preparatory period...
July 21, 2018: Journal of Science and Medicine in Sport
Dan Weaving, Thomas Sawczuk, Sean Williams, Tannath Scott, Kevin Till, Clive Beggs, Rich D Johnston, Ben Jones
Understanding the most demanding passages of European Super League competition can optimise training prescription. We established positional and match half differences in peak relative distances (m·min-1 ) across durations, and the number of collisions, high-speed- and very-high-speed-distance completed in the peak 10 min period. Moving-averages (10 s, 30 s, 1 min, 5 min, 10 min) of instantaneous speed (m·s-1 ) were calculated from 25 professional rugby league players during 25 matches via microtechnology...
July 19, 2018: Journal of Sports Sciences
Jonathon J S Weakley, Kevin Till, Dale B Read, Cedric Leduc, Gregory A B Roe, Padraic J Phibbs, Joshua Darrall-Jones, Ben Jones
Weakley, JJS, Till, K, Read, DB, Leduc, C, Roe, GAB, Phibbs, PJ, Darrall-Jones, J, and Jones, B. Jump training in rugby union players: barbell or hexagonal bar?. J Strength Cond Res XX(X): 000-000, 2018-The countermovement jump (CMJ) is an exercise that can develop athletic performance. Using the conventional barbell (BAR) and hexagonal barbell (HEX) while jumping, the intensity can be increased. However, the bar that provides greater adaptations is unknown. Therefore, this study aimed to assess changes in loaded and unloaded CMJ with either a BAR or HEX across a 4-week mesocycle in rugby union players...
July 4, 2018: Journal of Strength and Conditioning Research
Nicholas E Dalton-Barron, Shaun J McLaren, Christopher J Black, Michael Gray, Ben Jones, Gregory Roe
Dalton-Barron, NE, McLaren, SJ, Black, CJ, Gray, M, Jones, B, and Roe, G. Identifying contextual influences on training load: an example in professional rugby union. J Strength Cond Res XX(X): 000-000, 2018-We aimed to investigate the contextual factors influencing training load (TL), as determined by session rating of perceived exertion (sRPE-TL), accumulated within a match-to-match microcycle in rugby union players. Session rating of perceived exertion-TL data were collected daily from 35 professional rugby union players from the same team in the English Championship over the course of an in-season period...
July 2, 2018: Journal of Strength and Conditioning Research
Alessandro Piras, Francesco Campa, Stefania Toselli, Rocco Di Michele, Milena Raffi
This investigation examined the effect of partial-body cryostimulation (PBC) performed in the recovery time between a strength training and an interval running (IR). Nine rugby players [age 23.7±3.6, BMI 28.0±2.6 kg/m2] were randomly exposed to two different conditions: i) PBC: 3-min at -160°C; ii) passive recovery at 21°C. We recorded the bioelectrical impedance analysis (BIA), temperature, and cardiac autonomic variables in three moments: at baseline, after strength training (R0) and after 90-min of recovery (R90)...
July 3, 2018: Applied Physiology, Nutrition, and Metabolism, Physiologie Appliquée, Nutrition et Métabolisme
Samuel T Orange, James W Metcalfe, Phil Marshall, Rebecca V Vince, Leigh A Madden, Andreas Liefeith
Orange, ST, Metcalfe, JW, Marshall, P, Vince, RV, Madden, LA, and Liefeith, A. Test-retest reliability of a commercial linear position transducer (GymAware PowerTool) to measure velocity and power in the back squat and bench press. J Strength Cond Res XX(X): 000-000, 2018-This study examined the test-retest reliability of the GymAware PowerTool (GYM) to measure velocity and power in the free-weight back squat and bench press. Twenty-nine academy rugby league players (age: 17.6 ± 1.0 years; body mass: 87.3 ± 20...
June 25, 2018: Journal of Strength and Conditioning Research
Bruno Marrier, Yann Le Meur, Cédric Leduc, Julien Piscione, Mathieu Lacome, Germain Igarza, Christophe Hausswirth, Jean-Benoît Morin, Julien Robineau
PURPOSE: To describe the training periodization in Rugby-7s players competing in the Sevens World Series during a non-Olympic season. METHODS: Workload data were collected over a 33-week period in twelve male players participating in a full competitive season. Workload was quantified using session RPE and GPS-derived data during training and competition. Self-reported wellbeing was assessed using a questionnaire. Each variable was analysed weekly and through 5 mesocycles (Pre-season, In-season 1-4), each of which ended with competition blocks...
June 28, 2018: International Journal of Sports Physiology and Performance
Darryl J Cochrane, Daniel Monaghan
Cochrane, DJ and Monaghan, D. Using sprint velocity decrement to enhance acute sprint performance. J Strength Cond Res XX(X): 000-000, 2018-Acute sled towing has the capability to elicit a potentiation. Currently, sled loading is determined from body mass (BM) percent. However, it may be more relevant to use a percentage of maximal sprint reduction to determine an individual's load. The purpose of this study was to determine if individualizing sled loads at 35 and 55% reduction in velocity would improve 20-m sprint performance...
June 20, 2018: Journal of Strength and Conditioning Research
Shane Malone, Marian Earls, Aidan Shovlin, Anthony Eddy, Nick Winkelman
Malone, S, Earls, M, Shovlin, A, Eddy, A, and Winkleman, N. Match-play running performance and exercise intensity in elite international women's rugby sevens. J Strength Cond Res XX(X): 000-000, 2018-The aim of the current investigation was to describe the running and physiological performance demands of elite women's rugby sevens match-play. Twenty-seven (n = 27) rugby seven's players (24.4 ± 2.1 years; 168 ± 7.1 cm; 67.9 ± 4.3 kg) were recruited for the current investigation. Across the observational period, 36 games were analyzed; during these games, players wore global positioning system technology (10-Hz, Statsports Viper Pod; STATSports, Newry, Northern Ireland, United Kingdom) and heart rate monitors (Polar Team System, Polar Electro Oy, Kempele, Finland)...
June 14, 2018: Journal of Strength and Conditioning Research
Frank A Bourgeois, Paul Gamble, Nic D Gill, Mike R McGuigan
This study investigated the effects of eccentric phase-emphasis strength training (EPE) on unilateral strength and performance in 180- and 45-degree change of direction (COD) tasks in rugby union players. A 12-week cross-over design was used to compare the efficacy of resistance training executed with 3 s eccentric duration (EPE, n = 12) against conventional strength training, with no constraints on tempo (CON, n = 6). Players in each condition were categorised as 'fast' (FAST) or 'slow' (SLOW) using median trial times from baseline testing...
October 24, 2017: Sports
Rodney A Kennedy, David Drake
A countermovement jump (CMJ) represents one of the most frequently used performance tests for monitoring neuromuscular function in athletes. An often-overlooked feature that may provide some useful diagnostic information is the actual shape of the force-time curve. The aim of this study was therefore to consider how the shape of the force-time curve influences jump performance. Thirty-three male rugby union players performed two CMJs on a force plate, with discrete variables and continuous curve analysis used...
April 18, 2018: Sports
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
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
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
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
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