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https://www.readbyqxmd.com/read/29672644/the-relative-age-effect-is-larger-in-italian-soccer-top-level-youth-categories-and-smaller-in-serie-a
#1
Paolo Riccardo Brustio, Corrado Lupo, Alexandru Nicolae Ungureanu, Riccardo Frati, Alberto Rainoldi, Gennaro Boccia
The relative age effect (RAE; i.e., an asymmetry in the birth distribution) is a bias observed in sport competitions that may favour relatively older athletes in talent identification. Therefore, the aim of this study was to investigate the presence of RAE in elite soccer players competing in the Italian championships, even considering the discriminations of younger and older Serie A players (in relation to the median age of the sample), and different positional roles (i.e., goalkeeper, defender, midfielder, forward) for each observed category...
2018: PloS One
https://www.readbyqxmd.com/read/29667160/correction-to-relative-age-effects-across-and-within-female-sport-contexts-a-systematic-review-and-meta-analysis
#2
Kristy L Smith, Patricia L Weir, Kevin Till, Michael Romann, Stephen Cobley
An Online First version of this article was made available at https://link.springer.com/article/10.1007/s40279-018-0890-8 on 13 March 2018. Some errors were subsequently identified by the authors, particularly in regard to Table 4. Although the details pertained to in the table were correct in the original manuscript, it appears that errors were introduced during production of the article. The published article has now been updated with a corrected version of Table 4. This corrected version of the table is also shown below...
April 17, 2018: Sports Medicine
https://www.readbyqxmd.com/read/29622491/the-influence-of-age-policy-changes-on-the-relative-age-effect-across-the-australian-rules-football-talent-pathway
#3
Jade A Z Haycraft, Stephanie Kovalchik, David B Pyne, Paul Larkin, Sam Robertson
OBJECTIVES: To identify the influence of age-policy changes on the relative age effect (RAE) across the Australian Football League (AFL) talent pathway. DESIGN: Retrospective cross-sectional analysis of junior AFL players attending the National Draft (National), State, and State Under 16s (U16) combines between 1999-2016. METHODS: Birth-date data was obtained for players attending the AFL State U16 (n=663, age: 15.9±0.4years), State (n=803, age: 19...
March 21, 2018: Journal of Science and Medicine in Sport
https://www.readbyqxmd.com/read/29536262/relative-age-effects-across-and-within-female-sport-contexts-a-systematic-review-and-meta-analysis
#4
REVIEW
Kristy L Smith, Patricia L Weir, Kevin Till, Michael Romann, Stephen Cobley
BACKGROUND: Subtle differences in chronological age within sport (bi-) annual-age groupings can contribute to immediate participation and long-term attainment discrepancies; known as the relative age effect. Voluminous studies have examined relative age effects in male sport; however, their prevalence and context-specific magnitude in female sport remain undetermined. OBJECTIVE: The objective of this study was to determine the prevalence and magnitude of relative age effects in female sport via examination of published data spanning 1984-2016...
March 13, 2018: Sports Medicine
https://www.readbyqxmd.com/read/29513142/faster-higher-stronger-older-relative-age-effects-are-most-influential-during-the-youngest-age-grade-of-track-and-field-athletics-in-the-united-kingdom
#5
Philip E Kearney, Philip R Hayes, Alan Nevill
The relative age effect (RAE) is a common phenomenon in youth sport, whereby children born early in the selection year are more likely to experience success and to sustain participation. There is a lack of research investigating variables which influence RAEs within track and field athletics. Such information is vital to guide policies in relation to competition structure, youth development squads and coach education. A database of competition results was analysed to determine the extent to which RAEs were present in track and field athletics in the United Kingdom...
March 7, 2018: Journal of Sports Sciences
https://www.readbyqxmd.com/read/29420576/relative-age-effect-in-elite-soccer-more-early-born-players-but-no-better-valued-and-no-paragon-clubs-or-countries
#6
John R Doyle, Paul A Bottomley
The paper analyses two datasets of elite soccer players (top 1000 professionals and UEFA Under-19 Youth League). In both, we find a Relative Age Effect (RAE) for frequency, but not for value. That is, while there are more players born at the start of the competition year, their transfer values are no higher, nor are they given more game time. We use Poisson regression to derive a transparent index of the discrimination present in RAE. Also, because Poisson is valid for small frequency counts, it supports analysis at the disaggregated levels of country and club...
2018: PloS One
https://www.readbyqxmd.com/read/29398369/transient-relative-age-effects-across-annual-age-groups-in-national-level-australian-swimming
#7
Stephen Cobley, Shaun Abbott, Sera Dogramaci, Adam Kable, James Salter, Mirjam Hintermann, Michael Romann
OBJECTIVES: To determine the prevalence, magnitude and transient patterning of Relative Age Effects (RAEs) according to sex and stroke event across all age-groups at the Australian National age swimming Championships. DESIGN: Repeated years of cross-sectional participation data were examined. METHODS: Participants were 6014 unique male (3185) and female (2829) swimmers (aged 12-18 years) who participated in Freestyle (50, 400m) and/or Breaststroke (100, 200m) at the National age swimming Championships between 2000-2014 (inclusive)...
December 29, 2017: Journal of Science and Medicine in Sport
https://www.readbyqxmd.com/read/29392997/relative-age-effects-in-swiss-talent-development-a-nationwide-analysis-of-all-sports
#8
Michael Romann, Roland Rössler, Marie Javet, Oliver Faude
Relative age effects (RAE) generate consistent participation inequalities and selection biases in sports. The study aimed to investigate RAE across all sports of the national Swiss talent development programme (STDP). In this study, 18 859 youth athletes (female N = 5353; mean age: 14.8 ± 2.5 y and male N = 13 506; mean age: 14.4 ± 2.4 y) in 70 sports who participated in the 2014 competitive season were evaluated. The sample was subdivided by sex and the national level selection (NLS, N = 2464)...
February 2, 2018: Journal of Sports Sciences
https://www.readbyqxmd.com/read/29339997/the-relative-age-effect-on-soccer-players-in-formative-stages-with-different-sport-expertise-levels
#9
Alba Práxedes, Alberto Moreno, Luis García-González, David Pizarro, Fernando Del Villar
The Relative Age Effect (RAE) in sport has been targeted by many research studies. The objective of this study was to analyze, in amateur clubs, the RAE of soccer players, according to the sport expertise level of the team (e.g., A, B, C and subsequent) that they belong to within the same game category. 1,098 soccer players in formative stages took part in the study, with ages varying between 6 and 18 years old (U8 to U19 categories). All of them were members of 4 Spanish federated clubs. The birth dates were classified into 4 quartiles (Q1 = Jan-Mar; Q2 = Apr-Jun; Q3 = Jul-Sept; Q4 = Oct-Dec)according to the team they belonged to...
December 2017: Journal of Human Kinetics
https://www.readbyqxmd.com/read/29299878/talent-identification-and-development-in-male-football-a-systematic-review
#10
REVIEW
Hugo Sarmento, M Teresa Anguera, Antonino Pereira, Duarte Araújo
BACKGROUND: Expertise has been extensively studied in several sports over recent years. The specificities of how excellence is achieved in Association Football, a sport practiced worldwide, are being repeatedly investigated by many researchers through a variety of approaches and scientific disciplines. OBJECTIVE: The aim of this review was to identify and synthesise the most significant literature addressing talent identification and development in football. We identified the most frequently researched topics and characterised their methodologies...
April 2018: Sports Medicine
https://www.readbyqxmd.com/read/29036387/uncovering-exposures-responsible-for-birth-season-disease-effects-a-global-study
#11
Mary Regina Boland, Pradipta Parhi, Li Li, Riccardo Miotto, Robert Carroll, Usman Iqbal, Phung-Anh Alex Nguyen, Martijn Schuemie, Seng Chan You, Donahue Smith, Sean Mooney, Patrick Ryan, Yu-Chuan Jack Li, Rae Woong Park, Josh Denny, Joel T Dudley, George Hripcsak, Pierre Gentine, Nicholas P Tatonetti
Objective: Birth month and climate impact lifetime disease risk, while the underlying exposures remain largely elusive. We seek to uncover distal risk factors underlying these relationships by probing the relationship between global exposure variance and disease risk variance by birth season. Material and Methods: This study utilizes electronic health record data from 6 sites representing 10.5 million individuals in 3 countries (United States, South Korea, and Taiwan)...
September 28, 2017: Journal of the American Medical Informatics Association: JAMIA
https://www.readbyqxmd.com/read/29033006/relative-age-within-the-school-year-and-diagnosis-of-attention-deficit-hyperactivity-disorder-a-nationwide-population-based-study
#12
Kapil Sayal, Roshan Chudal, Susanna Hinkka-Yli-Salomäki, Petteri Joelsson, Andre Sourander
BACKGROUND: Findings are mixed on the relationship between attention-deficit hyperactivity disorder (ADHD) and younger relative age in the school year. We aimed to investigate whether relative age is associated with ADHD diagnosis in a country where prescribing rates are low and whether any such association has changed over time or relates to comorbid disorders (eg, conduct disorder [CD], oppositional defiant disorder [ODD], or learning disorder [LD]). METHODS: We used nationwide population-based registers to identify all Finnish children born between Jan 1, 1991, and Dec 31, 2004, who were diagnosed with ADHD from age 7 years onwards (age of starting school)...
November 2017: Lancet Psychiatry
https://www.readbyqxmd.com/read/28806751/the-relative-age-effect-reversal-among-the-national-hockey-league-elite
#13
Luca Fumarco, Benjamin G Gibbs, Jonathan A Jarvis, Giambattista Rossi
Like many sports in adolescence, junior hockey is organized by age groups. Typically, players born after December 31st are placed in the subsequent age cohort and as a result, will have an age advantage over those players born closer to the end of the year. While this relative age effect (RAE) has been well-established in junior hockey and other professional sports, the long-term impact of this phenomenon is not well understood. Using roster data on North American National Hockey League (NHL) players from the 2008-2009 season to the 2015-2016 season, we document a RAE reversal-players born in the last quarter of the year (October-December) score more and command higher salaries than those born in the first quarter of the year...
2017: PloS One
https://www.readbyqxmd.com/read/28792297/relative-age-effect-and-academic-timing-in-american-junior-college-baseball
#14
Thomas C Beals, Ovande Furtado, Fabio E Fontana
Previous research has shown that older athletes within age groupings are often perceived to be more talented simply due to advanced maturity, leading to biased selection in higher levels of sports competition, now commonly termed relative age effect (RAE). This study's goals were to determine whether (a) RAE influenced the selection of junior college baseball participants and (b) academic timing ( Glamser & Marciani, 1992 ), in which academic status determines age groupings more than strict age guidelines for college sports, influenced the formation of RAE...
February 2018: Perceptual and Motor Skills
https://www.readbyqxmd.com/read/28769849/an-inverse-relative-age-effect-in-male-alpine-skiers-at-the-absolute-top-level
#15
Øyvind Bjerke, Arve Vorland Pedersen, Tore K Aune, Håvard Lorås
The Relative Age Effect (RAE) can be described as the advantage of being born early after a certain cut-off date within a group of selection. The effect has been found across a wide range of sports and is particularly evident in pre-elite sports and team sports with a high selection pressure. At the absolute top level in team elite sports, the advantage of being relatively older has been reported to disappear, and even reverse, so that the relatively younger athletes are advantaged. In order to further examine such a reversal of the RAE, we investigated the performance of the overall top 50 skiers each year in the alpine World Cup, over a period of 20 years, among men (N = 234) and women (N = 235)...
2017: Frontiers in Psychology
https://www.readbyqxmd.com/read/28759890/maturity-status-influences-the-relative-age-effect-in-national-top-level-youth-alpine-ski-racing-and-soccer
#16
Lisa Müller, Christoph Gonaus, Christoph Perner, Erich Müller, Christian Raschner
Since the relative age effect (RAE) characterizes a problem in all age categories of alpine ski racing and soccer and the fact that, yet, to date the underlying factors have not been well investigated, the aim of the present study was to assess the influence of the biological maturity status on the RAE among youth alpine ski racers (YSR) and soccer players (SP). In total, 183 male and female YSR selected for national final races and 423 male SP selected for Elite Youth Development Centres were investigated...
2017: PloS One
https://www.readbyqxmd.com/read/28756733/relative-age-effect-in-physical-fitness-among-elementary-and-junior-high-school-students
#17
Hiroki Nakata, Miki Akido, Kumi Naruse, Motoko Fujiwara
The present study investigated characteristics of the relative age effect (RAE) among a general sample of Japanese elementary and junior high school students. Japan applies a unique annual age-grouping by birthdates between April 1 and March 31 of the following year for sport and education. Anthropometric and physical fitness data were obtained from 3,610 Japanese students, including height, weight, the 50-m sprint, standing long jump, grip strength, bent-leg sit-ups, sit and reach, side steps, 20-m shuttle run, and ball throw...
January 1, 2017: Perceptual and Motor Skills
https://www.readbyqxmd.com/read/28630582/doubly-disadvantaged-the-relative-age-effect-in-poland-s-basketball-players
#18
Krystian Rubajczyk, Kamil Świerzko, Andrzej Rokita
The aim of this study was to identify the relative age effect (RAE) in young Polish male (n = 3849) and female (n = 3419) basketball players aged 14 to 22 years competing in the elite games of the Polish Youth Championships. The distribution of birth dates, body height, players' match statistics, and the results of teams participating in championships were identified. The RAE was observed in male and female group, regardless of players age. Nevertheless, the greatest disproportion in the distribution of dates of birth was found in U16 group of boys (V = 0...
June 2017: Journal of Sports Science & Medicine
https://www.readbyqxmd.com/read/28630572/the-role-of-a-relative-age-effect-in-the-7-th-international-children-s-winter-games-2016-and-the-influence-of-biological-maturity-status-on-selection
#19
Lisa Müller, Carolin Hildebrandt, Christian Raschner
The aim of this study was to analyse the role of a relative age effect (RAE) and to investigate the influence of biological maturity status on the RAE at the 7(th) International Children`s Winter Games. The birth dates of all 572 participants (365 males, 207 females) were analysed, and the biological maturity status of 384 athletes (243 males, 141 females) was assessed by the age at peak height velocity (APHV) method. A RAE was present in the total sample (χ(2) = 67.81; p < 0.001), and among both male (χ(2) = 49...
June 2017: Journal of Sports Science & Medicine
https://www.readbyqxmd.com/read/28627293/new-evidence-of-relative-age-effects-in-super-elite-sportsmen-a-case-for-the-survival-and-evolution-of-the-fittest
#20
Benjamin D Jones, Gavin P Lawrence, Lew Hardy
The relative age effect (RAE) describes an overrepresentation of players born early (Q1) in a selection year and is highly prevalent within youth sport pathways. However, a dearth of research has investigated the RAE at the "super-elite" level. The present research assessed the presence of RAE in super-elite performers. Study 1 investigated RAEs in the world's best international Test cricketers (N = 262) over a 20-year period according to a robust and stringent "super-elite" criteria. Results revealed the RAE (Q1) when all disciplines were combined...
March 2018: Journal of Sports Sciences
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