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https://www.readbyqxmd.com/read/29234662/surgical-treatment-of-rectus-femoris-injury-in-soccer-playing-athletes-report-of-two-cases
#1
Leandro Girardi Shimba, Gabriel Carmona Latorre, Alberto de Castro Pochini, Diego Costa Astur, Carlos Vicente Andreoli
Muscle injury is the most common injury during sport practice. It represents 31% of all lesions in soccer, 16% in track and field, 10.4% in rugby, 17.7% in basketball, and between 22% and 46% in American football. The cicatrization with the formation of fibrotic tissue can compromise the muscle function, resulting in a challenging problem for orthopedics. Although conservative treatment presents adequate functional results in the majority of the athletes who have muscle injury, the consequences of treatment failure can be dramatic, possibly compromising the return to sport practice...
November 2017: Revista Brasileira de Ortopedia
https://www.readbyqxmd.com/read/29234284/the-efficacy-of-wrestling-style-compression-suits-to-improve-maximum-isometric-force-and-movement-velocity-in-well-trained-male-rugby-athletes
#2
Daniel T McMaster, Christopher M Beaven, Brad Mayo, Nicholas Gill, Kim Hébert-Losier
Purpose: The prevalence of compression garment (CG) use is increasing with athletes striving to take advantage of the purported benefits to recovery and performance. Here, we investigated the effect of CG on muscle force and movement velocity performance in athletes. Methods: Ten well-trained male rugby athletes wore a wrestling-style CG suit applying 13-31 mmHg of compressive pressure during a training circuit in a repeated-measures crossover design. Force and velocity data were collected during a 5-s isometric mid-thigh pull (IMTP) and repeated countermovement jump (CMJ), respectively; and time to complete a 5-m horizontal loaded sled push was also measured...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/29210957/the-physiological-and-performance-effects-of-caffeine-gum-consumed-during-a-simulated-half-time-by-professional-academy-rugby-union-players
#3
Russell M, Reynolds N A, Crewther B T, Cook C J, Kilduff L
Despite the prevalence of caffeine as an ergogenic aid, few studies have examined the use of caffeinated gums, especially during half-time in team sports. The physiological (blood lactate, salivary hormone concentrations) and performance (repeated sprints, cognitive function) effects of consuming caffeine gum during a simulated half-time were examined. Professional academy rugby union players (n=14) completed this double-blind, randomized, counterbalanced study. Following pre-exercise measurements , players chewed a placebo (PL) gum for five min before a standardized warm-up and completing repeated sprint testing (RSSA1)...
November 27, 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/29205214/biomechanics-of-the-shoulder-girdle-a-case-study-on-the-effects-of-union-rugby-tackles
#4
Luís Faria, Bárbara Campos, Renato Natal Jorge
PURPOSE: The shoulder girdle is a complex system, comprised by a kinematic chain and stabilizers. Due to the delicate equilibrium and synchronism between mobility and stability, high external loads may compromise its physiology, increasing the risk of injuries. Thus, this study intends to fully characterize the effects of a rugby tackle on the shoulder's anatomy and physiology. METHODS: For the experimental procedures, a matrix of pressure sensors was used, based on the Teckscan® pressure in-soles, force plates, an isokinetic dynamometer and sEMG (surface electromyography)...
2017: Acta of Bioengineering and Biomechanics
https://www.readbyqxmd.com/read/29189933/cardiac-structure-and-function-in-elite-native-hawaiian-and-pacific-islander-rugby-football-league-athletes-an-exploratory-study
#5
Christopher Johnson, Lynsey Forsythe, John Somauroo, Michael Papadakis, Keith George, David Oxborough
The aim of this exploratory study was to define the Athletes Heart (AH) phenotype in Native Hawaiian & Pacific Islander (NH&PI) Rugby Football League (RFL) athletes. Specifically, (1) to describe conventional echocardiographic indices of left ventricle (LV) and right ventricle (RV) structure and function in NH&PI RFL players and matched RFL Caucasian controls (CC) and (2) to demonstrate LV and RV mechanics in these populations. Ethnicity is a contributory factor to the phenotypical expression of the AH. There are no data describing the cardiac phenotype in NH&PI athletes...
November 30, 2017: International Journal of Cardiovascular Imaging
https://www.readbyqxmd.com/read/29189584/body-image-amongst-elite-rugby-union-players
#6
Claire Gibson, Chloe Hindle, Rebecca McLay-Cooke, Joanne Slater, Rachel Brown, Brett Smith, Dane Baker, Philip Healey, Katherine Black
There is limited information on the risk of eating disorders and body image of elite male athletes. However, research suggests there are some athletes who have poor body image and they may be at increased risk of developing eating disorders. Therefore, the current study investigated risk of eating disorders, body image, and the relationship with age, in elite rugby union players during their pre-season training period.This cross-sectional study was undertaken at the start of the pre-season amongst elite rugby union players in New Zealand...
November 16, 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/29189578/validity-of-an-isometric-midthigh-pull-dynamometer-in-male-youth-athletes
#7
Kevin Till, Rhys Morris, Keith Stokes, Grant Trewartha, Craig Twist, Nick Dobbin, Richard Hunwicks, Ben Jones
Till, K, Morris, R, Stokes, K, Trewartha, G, Twist, C, Dobbin, N, Hunwicks, R, and Jones, B. Validity of an isometric midthigh pull dynamometer in male youth athletes. J Strength Cond Res XX(X): 000-000, 2017-The purpose of this study was to investigate the validity of an isometric midthigh pull dynamometer against a criterion measure (i.e., 1,000-Hz force platform) for assessing muscle strength in male youth athletes. Twenty-two male adolescent (age 15.3 ± 0.5 years) rugby league players performed 4 isometric midthigh pull efforts (i...
November 16, 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/29172635/midterm-clinical-results-in-rugby-players-treated-with-the-bristow-procedure
#8
Takayuki Kawasaki, Yoshinori Hasegawa, Takefumi Kaketa, Yuki Shiota, Yoshinori Gonda, Shogo Sobue, Hideo Kobayashi, Jun Yamakawa, Yoshiaki Itoigawa, Kazuo Kaneko
BACKGROUND: Although surgical shoulder stabilization by coracoid transfer is effective for collision athletes and has a low reinjury rate, no reports have described the midterm results of this procedure in specific patient cohorts of sufficient number or provided subjective assessments of these patients. PURPOSE: To evaluate midterm results after treatment of shoulder instability with the Bristow procedure in a large cohort of rugby players. STUDY DESIGN: Case series; Level of evidence, 4...
November 1, 2017: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/29164565/a-naturally-inspired-curcumin-based-lecithin-formulation-meriva%C3%A2-formulated-as-the-finished-product-algocur%C3%A2-alleviates-the-osteo-muscular-pain-conditions-in-rugby-players
#9
F Di Pierro, P Zacconi, A Bertuccioli, S Togni, R Eggenhoffner, L Giacomelli, S Scaltrini
OBJECTIVE: Curcumin is one of the most investigated phytochemical products because of its low toxicity and its broad spectrum of bioactivity, including anti-inflammatory and analgesic properties. A new delivery form of curcumin, resorting to phosphatidylcholine (Meriva®, formulated as the finished product Algocur®) has been developed to increase its bioavailability. In this study, we tested the efficacy and safety of a Meriva®-based product in rugby players suffering by different osteo-muscular pain conditions PATIENTS AND METHODS: In this pilot study, 50 male rugby players with osteo-muscular pain due to traumatic injuries, physical overload or acute episode of chronic pain were recruited and treated with conventional analgesic drugs (n = 25) or Meriva®-based product (n = 25) for a maximum of 10 days...
November 2017: European Review for Medical and Pharmacological Sciences
https://www.readbyqxmd.com/read/29162618/tackler-s-head-position-relative-to-the-ball-carrier-is-highly-correlated-with-head-and-neck-injuries-in-rugby
#10
Shogo Sobue, Takayuki Kawasaki, Yoshinori Hasegawa, Yuki Shiota, Chihiro Ohta, Takeshi Yoneda, Shigeyuki Tahara, Nobukazu Maki, Takahiro Matsuura, Masahiro Sekiguchi, Yoshiaki Itoigawa, Tomohiko Tateishi, Kazuo Kaneko
OBJECTIVES: To characterise the tackler's head position during one-on-one tackling in rugby and to determine the incidence of head, neck and shoulder injuries through analysis of game videos, injury records and a questionnaire completed by the tacklers themselves. METHODS: We randomly selected 28 game videos featuring two university teams in competitions held in 2015 and 2016. Tackles were categorised according to tackler's head position. The 'pre-contact phase' was defined; its duration and the number of steps taken by the ball carrier prior to a tackle were evaluated...
November 21, 2017: British Journal of Sports Medicine
https://www.readbyqxmd.com/read/29161094/the-effect-of-resistance-training-in-a-hypoxic-chamber-on-physical-performance-in-elite-rugby-athletes
#11
Brad Mayo, Cory Miles, Stacy Sims, Matthew Driller
Mayo, Brad, Cory Miles, Stacy Sims, and Matthew Driller. The effect of resistance training in a hypoxic chamber on physical performance in elite rugby athletes. High Alt Med Biol 00:000-000, 2017.-Limited research suggests that muscle adaptations may be enhanced through resistance training in a hypoxic environment. Seventeen professional rugby union athletes (age [mean ± SD], 24 ± 3 years; body mass, 98.7 ± 12.8 kg; and height, 188.9 ± 7.9 cm), performed 12 resistance training sessions over a 3-week period...
November 21, 2017: High Altitude Medicine & Biology
https://www.readbyqxmd.com/read/29158725/nutritional-supplement-practices-of-professional-ugandan-athletes-a-cross-sectional-study
#12
Haruna Muwonge, Robert Zavuga, Peninnah Aligawesa Kabenge, Timothy Makubuya
Background: The use of nutritional supplements (NS) places athletes at great risk for inadvertent doping. Due to the paucity of data on supplement use, this study aimed to determine the proportion of Ugandan athletes using nutritional supplements and to investigate the athletes' motivation to use these supplements. Methods: A cross-sectional study was conducted in which an interviewer-administered questionnaire was used to collect data from 359 professional athletes participating in individual (boxing, cycling, athletics) and team (basketball, rugby, football, netball, and volleyball) sports...
2017: Journal of the International Society of Sports Nutrition
https://www.readbyqxmd.com/read/29143592/col5a1-gene-variants-previously-associated-with-reduced-soft-tissue-injury-risk-are-associated-with-elite-athlete-status-in-rugby
#13
Shane M Heffernan, Liam P Kilduff, Robert M Erskine, Stephen H Day, Georgina K Stebbings, Christian J Cook, Stuart M Raleigh, Mark A Bennett, Guan Wang, Malcolm Collins, Yannis P Pitsiladis, Alun G Williams
BACKGROUND: Two common single nucleotide polymorphisms within the COL5A1 gene (SNPs; rs12722 C/T and rs3196378 C/A) have previously been associated with tendon and ligament pathologies. Given the high incidence of tendon and ligament injuries in elite rugby athletes, we hypothesised that both SNPs would be associated with career success. RESULTS: In 1105 participants (RugbyGene project), comprising 460 elite rugby union (RU), 88 elite rugby league athletes and 565 non-athlete controls, DNA was collected and genotyped for the COL5A1 rs12722 and rs3196378 variants using real-time PCR...
November 14, 2017: BMC Genomics
https://www.readbyqxmd.com/read/29140912/reliable-testing-battery-for-assessing-physical-qualities-of-elite-academy-rugby-league-players
#14
Nick Dobbin, Richard Hunwicks, Jamie Highton, Craig Twist
Dobbin, N, Hunwicks, R, Highton, J, and Twist, C. Reliable testing battery for assessing physical qualities of elite academy rugby league players. J Strength Cond Res XX(X): 000-000, 2017-This study assessed the interday reliability of a testing battery for the assessment of physical qualities of rugby league players. Fifty players (age 17.1 ± 1.1 years; stature 181.3 ± 6.3 cm; and body mass 89.0 ± 11.6 kg) from 3 Super League academies participated in this study. Tests of countermovement jump performance, 10- and 20-m sprint performance, change of direction, medicine ball throw, and a modified Yo-Yo Intermittent Recovery Test Level 1 (prone Yo-Yo IR1) were completed on 3 separate occasions...
November 14, 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/29140179/relationship-between-two-standardized-tackling-proficiency-tests-and-rugby-league-match-play-tackle-performance
#15
Michael Speranza, Tim Gabbett, David A Greene, Richard D Johnston, Andrew D Townshend
This study investigated the relationship between two different assessments of tackling ability, physical qualities, and match-play performance in semi-professional rugby league players. Eighteen semi-professional rugby league players (mean ± SD age, 23.1 ± 2.0 yrs; mass 98.8 ± 11.8 kg) underwent tests of upper- and lower-body strength and power. Tackling ability was assessed using video analysis under-the-ball and over-the-ball tackle drills. A total of 2,360 tackles were analyzed from match-play. Over-the-ball tackle ability was positively related to the proportion of dominant tackles (rs = 0...
November 15, 2017: International Journal of Sports Physiology and Performance
https://www.readbyqxmd.com/read/29140145/monitoring-rugby-players-for-fitness-and-fatigue-what-do-coaches-want
#16
Lindsay T Starling, Michael I Lambert
PURPOSE: The advantages of monitoring players in a team are well documented. However, barriers associated with lack of resources and time prevents teams from implementing systematic monitoring programs. This study aims to identify 1) the methods rugby teams use to monitor the training load and associated response to the training load, and 2) prerequisites of a monitoring protocol that are scientifically suitable and practically applicable for monitoring fitness and fatigue of rugby players...
November 15, 2017: International Journal of Sports Physiology and Performance
https://www.readbyqxmd.com/read/29136039/exposure-time-running-and-skill-related-performance-in-international-u20-rugby-union-players-during-an-intensified-tournament
#17
Christopher J Carling, Mathieu Lacome, Eamon Flanagan, Pearse O'Doherty, Julien Piscione
PURPOSE: This study investigated exposure time, running and skill-related performance in two international u20 rugby union teams during an intensified tournament: the 2015 Junior World Rugby Championship. METHOD: Both teams played 5 matches in 19 days. Analyses were conducted using global positioning system (GPS) tracking (Viper 2™, Statsports Technologies Ltd) and event coding (Opta Pro®). RESULTS: Of the 62 players monitored, 36 (57.1%) participated in 4 matches and 23 (36...
2017: PloS One
https://www.readbyqxmd.com/read/29127516/vision-and-visual-history-in-elite-near-elite-level-cricketers-and-rugby-league-players
#18
Brendan T Barrett, Jonathan C Flavell, Simon J Bennett, Alice G Cruickshank, Alex Mankowska, Julie M Harris, John G Buckley
BACKGROUND: The importance of optimal and/or superior vision for participation in high-level sports remains the subject of considerable clinical research interest. Here, we examine the vision and visual history of elite/near-elite cricketers and rugby-league players. METHODS: Stereoacuity (TNO), colour vision, and distance (with/without pinhole) and near visual acuity (VA) were measured in two cricket squads (elite/international-level, female, n = 16; near-elite, male, n = 23) and one professional rugby-league squad (male, n = 20)...
November 10, 2017: Sports Medicine—Open
https://www.readbyqxmd.com/read/29122475/head-impact-exposure-from-match-participation-in-women-s-rugby-league-over-one-season-of-domestic-competition
#19
Doug A King, Patria A Hume, Conor Gissane, David C Kieser, Trevor N Clark
OBJECTIVES: To quantify the magnitude, frequency, duration and distribution of head impact exposure in a women's rugby league competition. DESIGN: Prospective cohort study. METHODS: Twenty-one players had a wireless impact measuring device (X2Biosystems XPatch) behind their right ear during match participation. Head impact data were collected and downloaded for analysis. Median peak linear and rotational accelerations and impact locations between player positions were assessed using a Friedman repeated measures ANOVA on ranks with a Wilcoxon signed-rank test for post hoc analysis with a Bonferroni correction...
October 28, 2017: Journal of Science and Medicine in Sport
https://www.readbyqxmd.com/read/29122204/insights-on-the-apparel-needs-and-limitations-for-athletes-with-disabilities-the-design-of-wheelchair-rugby-sports-wear
#20
Sara Bragança, Ignacio Castellucci, Simeon Gill, Pascal Matthias, Miguel Carvalho, Pedro Arezes
Wheelchair rugby is a sport that has been gaining popularity with athletes with disabilities. However, as it is relatively new and not played by the masses, market specific sports-wear is not available for this sport, which impacts directly on performance and clothing satisfaction of the athletes. Therefore, the main objective of this research was to identify the problems that wheelchair rugby players face with the sports-wear they use for playing the game. The data was collected using a focus group and a questionnaire with 61 wheelchair rugby players in the United Kingdom...
February 2018: Applied Ergonomics
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