Thema works: Comparison of physical demands of fifteens and sevens rugby Student: Jan Macháček Supervisor: Aleš Kaplan Aims: Outline the differences between rugby 7s and XVs based on a literature search. An analysis of the literature to find the terms that define the issue. Methodology: The method of literary research was used in the work, mainly from foreign sources. To meet the goal, concepts were chosen that helped to compile the idea of the structure of sports performance in rugby sevens and fifteens. Results: Over 250 electronic sources were acquired and researched as part of the fulfillment of the objectives of this work, based on the definitions of search keywords. All these sources were, with exceptions, in the English language. Of these, 60 articles covered men's sevens, 14 women's 7s, 68 men's and 7 women's XV, 32 youth rugby. Further 66 sources consisted of statistical yearbooks, periodization, talent identification articles, and coaching manuals. Three studies were identified, using a research method to compare aspects of different versions of rugby, but not in a systematic comprehensive form nor with the inclusion of both genders. Results of the research showed clear differences in per-minute running distances, higher frequency and length of sprints and high-intensity runs in the...

Title: Objectification and degree of association between indicators of game load and movement assumptions in elite rugby players Objectives: The aim was to objectify and measure the association between selected indicators of game load and selected movement assumptions in elite rugby players and measure the association between selected results of different fitness tests. Methods: The research group consisted of 31 players of the Czech rugby team of the senior category. Data were acquired using GPSports. The results from fitness testing provided by the Czech Rugby Union were used as indicators of movement assumptions. In total, three matches were measured. During the individual matches, the total distance covered was measured, the distance covered in individual speed zones (1st zone 0.0-1.8 km/h, 2nd zone 1.8-6.1 km/h, 3rd zone 6, 1-13.0 km/h, 4th zone 13.0-18.0 km/h, 5th zone 18.0-24.1 km/h, zone 6th >24.1 km/h), number of inputs to individual acceleration and deceleration zones (1st zone 1.2- 2.4 m/s/s, 2nd zone 2.4-3.6 m/s/s, 3rd zone 3.6-4.8 m/s/s). Results: The results of the work contain data that are unparalleled in Czech conditions. Tight forwards run 70.50 ± 7.09 m/min lose forwards 73.89 ± 4.25 m/min, inside backs 81.70 ± 11.71 m/min and outside backs 82.82 ± 12.71 m/min. In one match,...

Yes / Amid much recent interest we discuss a Variance Gamma model for Rugby Union matches (applications to other sports are possible). Our model emerges as a special case of the recently introduced Gamma Difference distribution though there is a rich history of applied work using the Variance Gamma distribution – particularly in finance. Restricting to this special case adds analytical tractability and computational ease. Our three-dimensional model extends classical two-dimensional Poisson models for soccer. Analytical results are obtained for match outcomes, total score and the awarding of bonus points. Model calibration is demonstrated using historical results, bookmakers’ data and tournament simulations.

Hyperlordosis or anterior pelvic tilt is a common non-neutral spinal posture associated with weak core stability, low back pain and altered lumbopelvic muscle activation patterns. Yet the effects of altered lumbopelvic posture and core stability on muscle activation patterns have not been evaluated during a functional movement. The main purpose of this study was to determine the relationship between pelvic tilt, core stability and muscle activation patterns during non-weighted squats in U/19 university-level rugby union players. A total of 49 rugby union players participated in this study. Pelvic tilt (dominant side) was measured from a digital photo with clear reflector markers on the anterior superior iliac spine (ASIS) and posterior superior iliac spine (PSIS) using the Kinovea video analysis software programme (version 0.8.15). Flexibility of the hamstrings, hip flexors and knee extensors was assessed with goniometry. Core stability was assessed using the pressure biofeedback unit and muscle onset times during the ascent phase of non-weighted squats. The onset times of the transverse abdominis (TrA), erector spinae (ES), gluteus maximus (GM) and biceps femoris (BF) muscles were measured using electromyography (EMG). Players were then grouped according to pelvic tilt (anterior and neutral) and by playing position (forwards and backs). The between group differences were evaluated for the abovementioned variables using p-value (statistical significance) and d-value (practical significance) measures. Muscle activation patterns and firing order were determined using descriptive statistics. The mean pelvic tilt of all participants (N=49) was an anterior tilt of 15.35°. When grouped by pelvic tilt, the anterior tilt group showed a mean pelvic tilt of 17.83° (n=27) and the neutral pelvic tilt group showed a mean pelvic tilt of 11.75° (n=22). Despite the differences in pelvic tilt, there was no significant difference in flexibility between the groups. Another controversial result is that the anterior tilt group showed practical significantly better core stability (d=0.54) than the neutral tilt group (46.93° vs 56.3°). During the double leg squat the muscle activation patterns were consistent between the groups. TrA activated first, followed by ES. Thereafter, the BF muscle activated, followed by the GM. The first place activation of TrA is consistent with the literature stating that the deep abdominal stabilisers of individuals with good core stability activate before the movement is initiated. The early onset of muscle activity of ES points to a focus on back extension during the ascent of the squat. Because the pelvic tilt was measured during static standing only, it is unclear whether the players in the neutral tilt group were able to hold the neutral pelvic tilt posture throughout the movement. Research has shown that there is an increased focus on trunk extension during the ascent phase of the squat which is not present during the descent. Future research should focus on assessing the pelvic tilt at the beginning of the ascent phase of the squat to ensure accurate results. The delay in GM activation during the ascent of the squat is concerning. GM acts as a lumbopelvic stabilizer, and its slow activation points to a decrease in lumbopelvic stability. This is very important in weight training, because weight training increases the strain on the lumbar spinal structures, which decreases performance and increases the risk of injury. / MSc (Biokinetics), North-West University, Potchefstroom Campus, 2014

Hyperlordosis or anterior pelvic tilt is a common non-neutral spinal posture associated with weak core stability, low back pain and altered lumbopelvic muscle activation patterns. Yet the effects of altered lumbopelvic posture and core stability on muscle activation patterns have not been evaluated during a functional movement. The main purpose of this study was to determine the relationship between pelvic tilt, core stability and muscle activation patterns during non-weighted squats in U/19 university-level rugby union players. A total of 49 rugby union players participated in this study. Pelvic tilt (dominant side) was measured from a digital photo with clear reflector markers on the anterior superior iliac spine (ASIS) and posterior superior iliac spine (PSIS) using the Kinovea video analysis software programme (version 0.8.15). Flexibility of the hamstrings, hip flexors and knee extensors was assessed with goniometry. Core stability was assessed using the pressure biofeedback unit and muscle onset times during the ascent phase of non-weighted squats. The onset times of the transverse abdominis (TrA), erector spinae (ES), gluteus maximus (GM) and biceps femoris (BF) muscles were measured using electromyography (EMG). Players were then grouped according to pelvic tilt (anterior and neutral) and by playing position (forwards and backs). The between group differences were evaluated for the abovementioned variables using p-value (statistical significance) and d-value (practical significance) measures. Muscle activation patterns and firing order were determined using descriptive statistics. The mean pelvic tilt of all participants (N=49) was an anterior tilt of 15.35°. When grouped by pelvic tilt, the anterior tilt group showed a mean pelvic tilt of 17.83° (n=27) and the neutral pelvic tilt group showed a mean pelvic tilt of 11.75° (n=22). Despite the differences in pelvic tilt, there was no significant difference in flexibility between the groups. Another controversial result is that the anterior tilt group showed practical significantly better core stability (d=0.54) than the neutral tilt group (46.93° vs 56.3°). During the double leg squat the muscle activation patterns were consistent between the groups. TrA activated first, followed by ES. Thereafter, the BF muscle activated, followed by the GM. The first place activation of TrA is consistent with the literature stating that the deep abdominal stabilisers of individuals with good core stability activate before the movement is initiated. The early onset of muscle activity of ES points to a focus on back extension during the ascent of the squat. Because the pelvic tilt was measured during static standing only, it is unclear whether the players in the neutral tilt group were able to hold the neutral pelvic tilt posture throughout the movement. Research has shown that there is an increased focus on trunk extension during the ascent phase of the squat which is not present during the descent. Future research should focus on assessing the pelvic tilt at the beginning of the ascent phase of the squat to ensure accurate results. The delay in GM activation during the ascent of the squat is concerning. GM acts as a lumbopelvic stabilizer, and its slow activation points to a decrease in lumbopelvic stability. This is very important in weight training, because weight training increases the strain on the lumbar spinal structures, which decreases performance and increases the risk of injury. / MSc (Biokinetics), North-West University, Potchefstroom Campus, 2014

Rugby league was introduced to New Zealand in 1908 by players desirous of playing a game generally considered to be faster and more skillful than rugby union. Even before its introduction, there were fears within the rugby union community that league would replace union unless steps were taken to make that game more attractive to both play and watch. In the early years of the twentieth century disputes within the New Zealand Rugby Union as to whether to introduce rule changes to make the game more attractive, or to stay with the status quo, had led to division and disharmony. This situation led the promoters of rugby league to be optimistic that their game, once introduced, would quickly replace rugby union as New Zealand's premier winter sport, but they greatly underestimated the hostility they would encounter from rugby union authorities, and this never happened. Investigated in this thesis are the reasons why the high hopes of rugby league's promoters were not fulfilled but how, nevertheless, in the years 1908 to 1920, the game did become established as a working-class sport in parts of the country, particularly the cities of Auckland and Christchurch. Newspapers of the period are used to show where and when league was introduced, where it was, and was not, successful, and to provide evidence of the efforts of rugby union authorities to brand league a professional sport, to threaten its players with banishment from rugby union, to deny league the use of Council owned playing fields, and to deny schoolboys the right to play rugby league at school. Occupations of league players and officials, found from electoral rolls, are used to show that league was an overwhelmingly working-class sport, shunned by the middle-class. The difficulties of establishing the game in small New Zealand towns are related to the geographic and demographic features of the country, and finally, the recovery from the effects of the Great War, which forced most leagues into recess, is shown to owe much to the highly successful postwar tours by international teams from Britain and Australia. Five periods in the development of rugby league are postulated; its introduction in 1908, its near collapse in 1909 and 1910, its expansion during the years 1911 to 1914, the difficulties experienced in the war years 1915 to 1918, and its post-war recovery in 1919 and 1920. The Great War put paid to the real possibility that league would rival union as New Zealand's premier winter team sport, but by 1920 it had recovered sufficiently to become firmly established on the New Zealand sporting scene with its own constituency of players and supporters.

Epidemiological studies consistently report that muscular strains are a primary injury type in rugby union with the majority of the strains occurring to the quadricep and hamstring musculature. Recently it has been suggested that poor eccentric muscular strength is a precursor to hamstring and quadriceps strains during intermittent sports that require rapid acceleration and deceleration. Despite the high incidence of these muscle injuries in Rugby Union there has been little research into the possible mechanisms involved. Thus, the purpose of this study was to measure the physiological and perceptual responses during a simulated Rugby Union laboratory protocol and further, to identify changes in muscle recruitment patterns and muscle strength over time by comparing this protocol to a continuous, constant load protocol covering the same distance. The experimental condition (EXP) required university level players to perform 80 minutes of simulated rugby union play in a laboratory setting (on a walkway of 22m) which was compared to that of a control condition (CON) which involved subjects covering the same distance, at a constant speed of 4.2km.h-1 on a treadmill. Physiological, biophysical and perceptual responses were measured pre-, at half-time and post-protocol. Heart rate was significantly (p<0.01) greater as a result of EXP in comparison to the CON. Electromyography (EMG) of the vastus medialis was significantly (p<0.01) greater during the CON protocol. The EXP condition elicited higher iEMG activity in the hamstring musculature at all time intervals. In addition the iEMG of the semitendinosus decreased significantly (p<0.01) as a result of the EXP protocol. Peak eccentric knee extensors (EXT) (-13.19%) and flexors (FLEX) (-12.81%) torque decreased significantly during the experimental protocol. After passive half-time (236.67 + 56.27Nm (EXT) and 173.89 + 33.3NM (FLEX)) and at the end of the protocol (220.39 + 55.16Nm and 162.89 + 30.66Nm) reduced relative to pre protocol (253.89 + 54.54Nm and 186.83 + 33.3Nm). Peak eccentric knee extensors did not change during the control protocol. „Central‟ and ‟Local” Rating of Perceived Exertion values were significantly (P<0.01) greater during the EXP protocol with an increased incidence of hamstring discomfort and perceived pain (5 out of 10). The EXP protocol resulted in significantly (p<0.01) increased incidence of delayed onset muscle soreness (DOMS). In conclusion, a stop-start laboratory protocol elicited increased heart rate, negatively impacted on muscle activity of the hamstrings, decreased eccentric strength in the lower limb musculature, resulted in increased ratings of „Central‟ and „Local‟ exertion and increased pain perception and increased incidence of DOMS. Thus, a stop-start rugby specific laboratory protocol has a negative impact on performance. Due to the specificity of the protocol being designed to match the demands of competitive match play it is expected that these changes in heart rate, muscle activity and strength, particularly eccentric strength, will impact negativity on performance during rugby match play and increase the likelihood of injury

Research studies indicate that, by determining the physiological load placed on athletes during competitions, it can aid in the development of strength and conditioning programmes, according to the specific demands placed on athletes (Deutch et al., 1998; Kay&Gill, 2004). Physiological data, specifically on rugby union players, are furthermore limited and more information is needed (Banfi et al., 2006; Deutch et al., 2007). The aim of the study was to investigate the physiological demands of South African male U/21 club rugby players and to establish the correlation between physiological demands experienced during rugby games and practice sessions. Scientific methods to describe physiological demands in sport that are used are heart-rates and blood-lactate measurements (Eniseler, 2005). A group of U/21 rugby players (n=15) of the University of Pretoria (Tuks) rugby club participated in this study. Components that were tested included blood-lactate concentrations and heart-rates during rugby match and practice sessions. The data of the Tuks U/21 team was statistically analysed with descriptive statistics (means and standard deviations). Significant differences between match and practice sessions, at a p-value of P < 0.05, were determined by a dependent t-test. An independent t-test was used to determine significant differences between the forward and backs group (Thomas&Nelson, 2005). The results showed that statistically significant differences (p<0.05) were found between mean heart-rate in the rugby match (154.40 ±13.53) and practice sessions (138.33±4.81). No significant differences were found between peak lactate measurements in the match (5.39 ±2.44) and practice sessions (4.93±1.83). Between the forward and backs group no statistical significance could be found for average heart-rate and blood-lactate levels in practice sessions and the match. The findings of the present study indicate that rugby union matches for club level U/21 players are an intermittent type of activity, with both the use of aerobic and anaerobic energy systems. Additional research on more amateur rugby clubs is needed to extend the knowledge of club level coaches. / Dissertation (MA)--University of Pretoria, 2012. / Biokinetics, Sport and Leisure Sciences / unrestricted

Existing research shows that increasing numbers of young men are dissatisfied with the appearance of their bodies. Research has found that men will use sport and health-related sports acts to conceal these concerns from others. Accordingly, men s body dissatisfactions are documented less frequently because the practices drawn upon to conceal them are perceived as routine forms of masculine behaviour. Rugby union is one of the most popular sports played by young men in England. Historically, the male rugby player is culturally perceived as strong, tough and unemotionally articulate. Existing research draws attention to health issues, such as performance stress and injury that arise through participation in this sport. Research also shows that rugby union players are likely to experience concerns about gaining weight, yet these are disguised within the requirements of training for the sport. Although, there are studies that examine the constitution of masculinities, the experience of pain and injury and career transitions among rugby union players there are no studies, as yet, that examine how rugby union men experience body concerns and manage these experiences through their sport. The research discussed in this thesis examines how a group of rugby union men (25) aged 18-25, of varied racial identity, ethnic and social backgrounds, participating in an elite university rugby union 1st XV team, experience concerns about the appearance and performance of their bodies and the ways in which such concerns develop. It also examines if and how these men used the sport and health-related sports acts, to overcome their concerns and conceal them from others. A theoretical framework, which draws on the concepts of the three theorists: Connell (1995, 2008) Goffman (1959; 1961; 1979) and Bourdieu (1978; 1979; 1984), is developed. As part of this, a new concept has been created from Goffman s dramaturgical approach: that of the intimate dimension. In this dimension intimate relationships occur. It is located away from the front region, (the public), and the back region (semi-public spaces) where less formal relationships occur. It includes the research interview, with a woman researcher, and some other women such as girlfriends, sisters or female friends and also one or two other rugby men with whom the rugby men demonstrated a close bond. Within this dimension the rugby men are more forthcoming about the personal elements of their rugby lives. The theoretical framework is used to examine these men s concerns, how they are developed, experienced and managed. Recognising that cultural assumptions of a tough and less expressive masculinity assigned to this sport can potentially make it difficult for men to express these concerns, a combination of visual research methods and ethnography are used to examine these men s body concerns and their management. This includes collaborative collection of photography and photo-elicitation interviews. The research shows that embodied experiences of discomfort, associated with pain, injury, concerns about height, being overweight or out of shape, and social experiences of exclusion led to the development of the rugby men s body concerns. For these rugby men, their rugby masculinities are influential to the management and concealment of their body concerns. They suppress and conceal their body concerns in the front and back regions of the sport and reveal them in more intimate dimensions. The rugby men s relationships with each other, in the back regions of the sport, were the most influential to this identity, but more importantly, to the management and reinforcement of these concerns. This thesis contributes to filling the gap in existing academic research by examining body concerns and its management amongst rugby union men. It also extends existing research that has found men conceal their body concerns in sport, because it looks at how these men manage these concerns differently in different regions of their sport. Furthermore, a theoretical framework that combines interactionism and phenomenology is used to study sociologically men s body concerns in these different contexts. The combination of visual methods and ethnography goes beyond some of the existing methods used in clinical and sociological research that have examined men's body concerns. They can be used to enhance understanding of clinical forms of body concern and other emotional concerns rugby union men and other sportsmen, of all ages, have about performance, pain and injury. The incorporation of visual methods is potentially widely applicable because they have increasing precedence in sportsmen s lives to analyse performance and to represent them.

Le rugby à XV est un sport collectif qui se caractérise en match par des courses et des collisions de hauteintensité très variables selon les positions. La première partie des travaux, qui s’est centrée sur l’analyse del’activité par centrale d’analyse cinématique, a mis en évidence une activité de haute intensité plus importante enCoupe d’Europe qu’en TOP14 qui varie selon les cinq postes de jeu en termes de répétitions d’efforts et dedistances parcourues à haute intensité notamment chez les avants. De plus, ces activités de haute intensitédiminuent en première et deuxième mi-temps et sont différentes selon les positions. En effet, une diminution plusprécoce est observée chez les avants et les trois-quarts ailes, qui est majorée au niveau des accélérations entre lesdeux dernières périodes d’un match pour les avants démontrant un impact de la fatigue. A l’inverse, les arrièresarrivent globalement à maintenir une intensité élevée. Ainsi, au regard des résultats de la première partie, ladeuxième partie des travaux a consisté en la mise en place d’un entraînement par répétition de sprints en hypoxieinduite par hypoventilation à bas volume pulmonaire. Celui-ci a permis une amélioration significative de lacapacité à répéter des sprints après sept séances d’entraînement par hypoventilation chez les joueurs très entraînés,alors qu’aucun changement n’a été observé dans le groupe normoxie. L’entraînement en rugby à XV se caractérisepar la répétition d’efforts de haute intensité à dominante dynamique (courses) et statique (musculation, phases decombat) qui vont impacter le remodelage du ventricule gauche de manière spécifique. La troisième partie a montré,à partir d’échocardiographies de repos en mode 2D-strain, une hypertrophie physiologique majorée chez les avantscomparativement aux arrières. Cette hypertrophie s’accompagne d’une augmentation des pressions de remplissageet une diminution de la relaxation lors de la diastole, notamment chez les avants. Enfin, malgré une torsionventriculaire inchangée, les rotations et les vitesses de rotation sont plus grandes au niveau basal et plus faibles auniveau apical chez les joueurs de rugby à XV. Ainsi, cette thèse CIFRE apporte de nouvelles données au niveaude l’analyse de l’activité, des méthodes d’entraînement facilement applicables pour l’entraîneur, ainsi que desdonnées plus spécifiques à l’évaluation cardiaque de repos pour le clinicien. / Rugby union is a team sport characterized by high-intensity collisions and running efforts during gameswhich are position-dependent. Accounting for the five different positional groups, the first part of this thesisdemonstrated greater high-intensity activity in European cup when compared to the TOP14 rugby unioncompetition; with position-dependent variations in the frequency of repeated high-intensity efforts and the relativedistance of high-speed movements in forwards. A decrease in high-intensity movement parameters was observedduring the first and second halves of a competitive rugby union match. Indeed, the decrease in high-intensitymovements was earlier in forwards and outside backs who peaked in high-intensity accelerations between the lasttwo periods of the game, while backs were able to maintain their high-intensity activity throughout the match.Collectively, the capacity for a player to repeat high-intensity efforts during a rugby union game varied by thelevel of competition and was influenced by the onset of fatigue. In this context, the second part of this thesis was to conduct a repeated-sprint training in hypoxia. Hypoxia was induced by voluntary hypoventilation at low lungvolume. This training protocol has largely improved the repeated-sprint ability performance in highly-trainedrugby union players after seven training sessions of hypoventilation, whereas it was unaltered in the controlnormoxic group. Such training demands in rugby union (characterised by repeated high-intensity efforts indynamic (running) and static (weightlifting, fighting)) have a specific impact on left ventricular remodelling. Thelast part of this thesis, using 2D-speckle-tracking resting echocardiography, demonstrated that LV hypertrophywas greater in forwards when compared to backs and to control group. Systolic function remained unchanged, butdiastolic function was altered, mainly in forwards, with an increase in filling pressures and a decrease in leftventricular relaxation. Finally, left ventricular twisting was similar while rugby union players exhibited lowerapical and higher basal rotations velocities compared to controls. Collectively, this CIFRE research programprovided new data in activity analysis and training methods that are widely applicable to a range of rugby unionprograms and data on left ventricular morphology, function and mechanics for the clinician.