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Alex Ross, Nicholas D. Gill, and John B. Cronin

Anthropometrical and physical characteristics have been used to distinguish players of different competition levels and position groups; however, there is no literature on rugby sevens.

Purpose:

To compare the anthropometrical and physical characteristics of international and provincial rugby sevens players and between forwards and backs.

Methods:

To assess whether differences exist, 65 rugby sevens players including 22 international players and 43 provincial-level players were assessed for height, mass, body composition, speed, repeated-sprint ability, lower-body power, upper-body strength, and maximal aerobic endurance during in-season preparation for tournaments.

Results:

Clear differences (2.8−32%; small to very large effect sizes) were observed in all anthropometrical and physical measures between international and provincial players, with the largest differences observed in repeated-sprint ability (5.7%; very large effect size), 40-m-sprint time (4.4%; large effect size), 50-kg squat-jump peak power (32%; large effect size), and multistage fitness-test performance (19%; large effect size). Fewer and smaller differences (0.7−14%; trivial to large effect sizes) were found when comparing forwards and backs, with body height being the most discriminant characteristic (3.5%; large effect size).

Conclusions:

Lower-level rugby sevens players should seek to improve their overall physical profile, particularly their repeated-sprint ability, to reach higher levels in rugby sevens. Furthermore, positional status may have little importance when preparing for rugby sevens.

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Tatiane Gorski, Thomas Rosser, Hans Hoppeler, and Michael Vogt

Purpose:

To describe the development of anthropometric and physical characteristics of young Swiss alpine skiers between 2004 and 2011, to compare them between age and performance-level groups, and to identify age- and sex-dependent reference values for the tests performed.

Methods:

The Swiss-Ski Power Test includes anthropometric measures and physical tests for coordination and speed, strength, anaerobic capacity, and endurance. The authors analyzed the results of 8176 tests performed by 1579 male and 1109 female alpine skiers between 2004 and 2011. Subjects ranged between regional and national level of performance and were grouped according to their competition age groups (U12, 11 y; U14, 12–13 y; U16, 14–15 y; U18, 16–17 y; U21, 18–20 y) and performance level.

Results:

A progressive increase in anthropometric measures and improvements in tests results with increasing age were found. For all tests, male athletes had better results than female athletes. Minor differences were observed in anthropometric characteristics between 2004 and 2011 (mostly <5%), while results of physical and coordinative tests showed significant improvements (up to more than 50% enhancement) or stability over the years. Differences between higher- and lower-level athletes were more pronounced in tests for lower-limb strength and anaerobic capacity.

Conclusions:

The presented profile of young Swiss alpine skiers highlights the improvements in different physical aspects along the maturation process and chronologically over a period of 7 y. Furthermore, reference values are provided for comparisons with alpine skiers or athletes from other sports.

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Jan Boone, Kevin Caen, Maarten Lievens, Gil Bourgois, Alessandro L. Colosio, and Jan G. Bourgois

nearly equal weight of all rowing crews, it can be assumed that the technical skills and synchronicity in the boat will play an important role in the outcome of the race, especially compared with heavy weight rowing. Current studies have only focused on the physical profile (eg, maximal oxygen uptake: 6

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Emily Nicol, Simon Pearson, David Saxby, Clare Minahan, and Elaine Tor

investigation into the anthropometric attributes of elite breaststroke swimmers is of importance given the unique physiological and technical requirements of the stroke. The present study aimed to address identified gaps within the literature through the development of a physical profile of elite breaststroke

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Grant M. Duthie

Increased professionalism in rugby has resulted in national unions developing high-performance models for elite player development, of which physical preparation is an important component, to ensure success in future years. This article presents a 5-step framework for the physical preparation of elite players in a development program. Competition movement patterns and the physical profiles of elite players are used as the basis of the framework and reinforce the repeated high-intensity nature of Rugby Union. Physical profiling highlights a player’s strengths and weaknesses in the areas of strength, speed, endurance, and body composition. These qualities need to be managed with an understanding of their interaction. This framework should be implemented within the yearly plan to ensure that benefits are maximized from the training undertaken. The success of the framework in developing elite players’ progression can be evaluated using standardized physical, performance, and competency tests.

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Jordan Milsom, Paulo Barreira, Darren J. Burgess, Zafar Iqbal, and James P. Morton

The onset of injury and subsequent period of immobilization and disuse present major challenges to maintenance of skeletal muscle mass and function. Although the characteristics of immobilization-induced muscle atrophy are well documented in laboratory studies, comparable data from elite athletes in free-living conditions are not readily available. We present a 6-month case-study account from a professional soccer player of the English Premier League characterizing rates of muscle atrophy and hypertrophy (as assessed by DXA) during immobilization and rehabilitation after ACL injury. During 8 weeks of inactivity and immobilization, where the athlete adhered to a low carbohydrate-high protein diet, total body mass decreased by 5 kg attributable to 5.8 kg loss and 0.8 kg gain in lean and fat mass, respectively. Changes in whole-body lean mass was attributable to comparable relative decreases in the trunk (12%, 3.8 kg) and immobilized limb (13%, 1.4 kg) whereas the nonimmobilized limb exhibited smaller declines (7%, 0.8 kg). In Weeks 8 to 24, the athlete adhered to a moderate carbohydrate-high protein diet combined with structured resistance and field based training for both the lower and upper-body that resulted in whole-body muscle hypertrophy (varying from 0.5 to 1 kg per week). Regional hypertrophy was particularly pronounced in the trunk and nonimmobilized limb during weeks 8 to 12 (2.6 kg) and 13 to 16 (1.3 kg), respectively, whereas the previously immobilized limb exhibited slower but progressive increases in lean mass from Week 12 to 24 (1.2 kg). The athlete presented after the totality of the injured period with an improved anthropometrical and physical profile.

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Niall Casserly, Ross Neville, Massimiliano Ditroilo, and Adam Grainger

the demands of senior rugby, through improved performance and a reduction in the incidence of injury. 7 Existing research shows that there are substantial differences in the physical profiles of elite junior and senior rugby players. 8 Senior players have previously demonstrated superior performance

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Felipe Guimarães Teixeira, Paulo Tadeu Cardozo Ribeiro Rosa, Roger Gomes Tavares Mello, and Jurandir Nadal

An evaluation of physical profiles could influence performance in different sports. 1 However, few studies have explored this using multivariable analysis in combat sports such as judo. 2 , 3 Preceding studies have proposed identifying the primary biomechanical, 4 anthropometric, 5

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Luke Hogarth, Mark McKean, Max McKenzie, and Tyler Collings

PA , Dos’Santos T . Physical profiles of female academy netball players by position . J Strength Cond Res . 2019 ; 33 ( 6 ): 1601 – 1608 . PubMed ID: 28426516 doi:10.1519/JSC.0000000000001949 10.1519/JSC.0000000000001949 28426516 4. McKenzie CR , Whatman C , Brughelli M . Performance

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Fabian Otte, Tim Dittmer, and Julia West

characteristics and general GK profiles (see West, 2018 , and White et al., 2018 , for detailed reviews). Here, research provides evidence for GKs to commonly show a different physical profile compared with outfield players (e.g.,  Gil et al., 2007 , 2014 ; Mala et al., 2015 ). Body mass can be a