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"relative age effect"

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https://www.readbyqxmd.com/read/27879175/identifying-talented-track-and-field-athletes-the-impact-of-relative-age-effect-on-selection-to-the-spanish-national-athletics-federation-training-camps
#1
Javier Brazo-Sayavera, María Asunción Martínez-Valencia, Lisa Müller, Georgios Andronikos, Russell J J Martindale
This study examined the impact of relative age effect (RAE) on selection to the Spanish National Athletics Federation (RFEA) training camps (TC) between 2006 and 2013. Overall, 1,334 selected athletes at U15 years (cadet) and U17 years (juvenile) were compared against 27,711 licensed but unselected athletes for the same age groups. The results highlighted the influential role of the RAE on selection to national level track and field training camp opportunities. Interestingly, this effect was mediated by age and gender, where effects were stronger for both males and younger athletes (U15), with no evidence of RAE for older (U17) female athletes...
November 23, 2016: Journal of Sports Sciences
https://www.readbyqxmd.com/read/27780175/player-selection-bias-in-national-football-league-draftees
#2
Kyle S Beyer, David H Fukuda, Michael J Redd, Jeffrey R Stout, Jay R Hoffman
Beyer, KS, Fukuda, DH, Redd, MJ, Stout, JR, and Hoffman, JR. Player selection bias in National Football League draftees. J Strength Cond Res 30(11): 2965-2971, 2016-Relative age effects (RAEs) have been studied as a potential factor associated with player selection bias in numerous sports. However, little research has examined the role of RAEs among National Football League (NFL) draftees. The purpose of the current study was to determine the existence of RAEs in NFL draftees from the last 10 NFL drafts. Draftee birth dates were collected and divided into calendar and scholastic quarters (SQ1-SQ4)...
November 2016: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/27747774/does-relative-age-affect-career-length-in-north-american-professional-sports
#3
C Steingröver, N Wattie, J Baker, J Schorer
BACKGROUND: Relative age effects (RAEs) typically favour older members within a cohort; however, research suggests that younger players may experience some long-term advantages, such as longer career length. The purposes of this study were to replicate previous findings on RAEs among National Hockey League (NHL) ice hockey players, National Basketball Association (NBA) basketball players and National Football League (NFL) football players and to investigate the influence of relative age on career length in all three sports...
December 2016: Sports Medicine—Open
https://www.readbyqxmd.com/read/27669191/influence-of-physical-maturity-status-on-sprinting-speed-among-youth-soccer-players
#4
Robert McCunn, Matthew Weston, John Ka Hill, Rich D Johnston, Neil V Gibson
The relative age effect is well documented with the maturation-selection hypothesis the most common explanation; however, conflicting evidence exists. We observed the birth-date distribution within an elite junior soccer academy. The influence of physical maturity status on anthropometric variables and sprinting ability was also investigated. Annual fitness testing was conducted over an eight-year period with a total of 306 players (age: 12.5 ± 1.7 y [range: 9.7 - 16.6 y]; stature: 156.9 ± 12.9 cm; mass: 46...
September 21, 2016: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/27504832/biological-maturity-status-strongly-intensifies-the-relative-age-effect-in-alpine-ski-racing
#5
Lisa Müller, Erich Müller, Carolin Hildebrandt, Christian Raschner
The relative age effect (RAE) is a well-documented phenomenon in youth sports. This effect exists when the relative age quarter distribution of selected athletes shows a biased distribution with an over-representation of relatively older athletes. In alpine ski racing, it exists in all age categories (national youth levels up to World Cup). Studies so far could demonstrate that selected ski racers are relatively older, taller and heavier. It could be hypothesized that relatively younger athletes nearly only have a chance for selection if they are early maturing...
2016: PloS One
https://www.readbyqxmd.com/read/27294320/are-the-world-junior-championship-finalists-for-middle-and-long-distance-events-currently-competing-at-international-level
#6
Federico Pizzuto, Matteo Bonato, Gialunca Vernillo, Antonio La Torre, Maria Francesca Piacentini
PURPOSE: The aim of the present study was to analyze how many finalists of the International Association of Athletics Federations (IAAF) World Junior Championships (WJC) in the middle and long-distance track events had dropped out from high-level competitions. METHODS: Starting from 2002, the eight male and the eight female finalists in the middle and long-distance events of six editions of the WJC were followed until 2015 to evaluate how many athletes missed from the IAAF rankings for two consecutive years starting from the year after WJC participation...
June 13, 2016: International Journal of Sports Physiology and Performance
https://www.readbyqxmd.com/read/27242593/relative-age-effects-in-mathematics-and-reading-investigating-the-generalizability-across-students-time-and-classes
#7
Katharina Thoren, Elisa Heinig, Martin Brunner
A child's age in comparison to the age of her or his classmates (relative age) has been found to be an influential factor on academic achievement, particularly but not exclusively at the beginning of formal schooling. However, few studies have focused on the generalizability of relative age effects. To close this gap, the present study analyzes the generalizability across students with and without immigrant backgrounds, across three student cohorts that entered school under a changing law of school enrollment, and across classes...
2016: Frontiers in Psychology
https://www.readbyqxmd.com/read/27238077/age-ordered-shirt-numbering-reduces-the-selection-bias-associated-with-the-relative-age-effect
#8
David L Mann, Pleun J M A van Ginneken
When placed into age groups for junior sporting competition, the relative differences in age between children leads to a bias in who is evaluated as being talented. While the impact of this relative age effect (RAE) is clear, until now there has been no evidence to show how to reduce it. The aim of this study was to determine whether the selection bias associated with the RAE could be reduced. Talent scouts from an elite football club watched junior games and ranked players on the basis of their potential. Scouts were allocated to one of three groups provided with contrasting information about the age of the players: (1) no age information, (2) players' birthdates or (3) knowledge that the numbers on the playing shirts corresponded to the relative age of the players...
May 30, 2016: Journal of Sports Sciences
https://www.readbyqxmd.com/read/27166343/the-role-of-a-relative-age-effect-in-the-12th-winter-european-youth-olympic-festival-in-2015
#9
Lisa Müller, Carolin Hildebrandt, Martin Schnitzer, Christian Raschner
The aim of this study was to define the role of the relative age effect in the 12th Winter European Youth Olympic Festival 2015. The birth dates of all 899 participants and anthropometric data of 655 participants were analyzed. A significant relative age effect was present in the total sample and among the male athletes but not in the female athletes. Additionally, a significant relative age effect was present in strength- and endurance-related sports but not in technique-related sports. Statistically significantly more older athletes won medals...
April 2016: Perceptual and Motor Skills
https://www.readbyqxmd.com/read/27166336/relative-age-effect-in-mind-games-the-evidence-from-elite-chess
#10
Kristijan Breznik, Kris M Y Law
Numerous studies have attempted to investigate the factors affecting superior intellectual performance, and it has been proposed that a possible biological marker for superior intellectual performance is the month of birth. In this study, birth details of chess players were obtained from the official international chess federation website. The rating lists of top junior female chess players ("Girls" category), top junior male chess players ("Boys"), top female chess players ("Female"), and top male chess players ("Male") were collected between July 2000 and August 2015...
April 2016: Perceptual and Motor Skills
https://www.readbyqxmd.com/read/26992834/the-interaction-between-constituent-year-and-within-1-year-effects-in-elite-german-youth-basketball
#11
C Steingröver, N Wattie, J Baker, W F Helsen, J Schorer
The current state of research on relative age effects in basketball shows an uneven picture. These mixed results might be caused by the interaction of constituent year and within-year effects. Our aim was to examine constituent and within-1-year effects in elite German youth basketball. The sample (n = 4400) included players competing in the JBBL (Under-16 first division) and the NBBL (Under-19 first division) from 2011/2012 until 2013/2014. A multi-way frequency analysis revealed an interaction of constituent year effects and within-1-year effects for the JBBL, χ(2) (6, 2590) = 12...
March 19, 2016: Scandinavian Journal of Medicine & Science in Sports
https://www.readbyqxmd.com/read/26807348/does-relative-age-affect-career-length-in-north-american-professional-sports
#12
C Steingröver, N Wattie, J Baker, J Schorer
BACKGROUND: Relative age effects (RAEs) typically favour older members within a cohort; however, research suggests that younger players may experience some long-term advantages, such as longer career length. The purposes of this study were to replicate previous findings on RAEs among National Hockey League (NHL) ice hockey players, National Basketball Association (NBA) basketball players and National Football League (NFL) football players and to investigate the influence of relative age on career length in all three sports...
2016: Sports Medicine—Open
https://www.readbyqxmd.com/read/26765629/the-relative-age-effect-on-youth-sports-injuries
#13
Andrea Stracciolini, Hilary Levey Friedman, Rebecca Casciano, David Howell, Dai Sugimoto, Lyle J Micheli
INTRODUCTION/PURPOSE: The relative age effect (RAE) has been described as the consequence of differences in ages between individuals within the same age group. In youth sports, relatively older children may have a physical and developmental advantage over younger children. The purpose of this study was to determine the relationship between relative age and sports injury in a cohort of pediatric athletes. METHODS: A probability sample (n = 1997) of children between 5 and 17 yr of age with sports injuries were extracted from a regional hospital database...
June 2016: Medicine and Science in Sports and Exercise
https://www.readbyqxmd.com/read/26756717/age-and-active-navigation-effects-on-episodic-memory-a-virtual-reality-study
#14
Hélène Sauzéon, Bernard N'Kaoua, Prashant Arvind Pala, Mathieu Taillade, Pascal Guitton
We investigated the navigation-related age effects on learning, proactive interference semantic clustering, recognition hits, and false recognitions in a naturalistic situation using a virtual apartment-based task. We also examined the neuropsychological correlates (executive functioning [EF] and episodic memory) of navigation-related age effects on memory. Younger and older adults either actively navigated or passively followed the computer-guided tour of an apartment. The results indicated that active navigation increased recognition hits compared with passive navigation, but it did not influence other memory measures (learning, proactive interference, and semantic clustering) to a similar extent in either age group...
February 2016: British Journal of Psychology
https://www.readbyqxmd.com/read/26731533/relative-age-effects-in-women-s-rugby-union-from-developmental-leagues-to-world-cup-tournaments
#15
Srdjan Lemez, Clare MacMahon, Patricia Weir
UNLABELLED: Annual age cohort groupings promote relative age effects (RAEs), which often, inadvertently, create participation and attainment biases between relatively older and younger players within the same age cohort. In a globally evolving sport, women's rugby team selection practices may potentially bypass qualified players as a result of maturational differences. PURPOSE: Our study examined the prevalence of RAEs in women's rugby union. METHOD: Player data (age range = 4-21+ years) were gathered from the 2006 and 2010 Rugby World Cups (n = 498) and from Canadian (n = 1,497) and New Zealand (NZ; n = 13,899) developmental rugby leagues...
2016: Research Quarterly for Exercise and Sport
https://www.readbyqxmd.com/read/26704794/risk-factors-for-acute-knee-injury-in-female-youth-football
#16
RANDOMIZED CONTROLLED TRIAL
Martin Hägglund, Markus Waldén
PURPOSE: To prospectively evaluate risk factors for acute time-loss knee injury, in particular ACL injury, in female youth football players. METHODS: Risk factors were studied in 4556 players aged 12-17 years from a randomised controlled trial during the 2009 season. Covariates were both intrinsic (body mass index, age, relative age effect, onset of menarche, previous acute knee injury or ACL injury, current knee complaints, and familial disposition of ACL injury) and extrinsic (no...
March 2016: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
https://www.readbyqxmd.com/read/26666180/relative-age-effect-and-performance-in-the-u16-u18-and-u20-european-basketball-championships
#17
Haritz Arrieta, Jon Torres-Unda, Susana María Gil, Jon Irazusta
This study sought to determine the association of relative age and performance of young elite basketball players. The distribution of the birth dates, heights, positions, classification and performance of the male and female participants (n = 2395) of the U16, U18 and U20 European Basketball Championships were analysed. We found an over-representation of players born during the initial months of the year in all groups, with the relative age effect being more evident in players of the U16 and U18 groups, than of the U20 teams, particularly in male squads...
August 2016: Journal of Sports Sciences
https://www.readbyqxmd.com/read/26651240/start-hard-finish-better-further-evidence-for-the-reversal-of-the-rae-advantage
#18
Neil McCarthy, Dave Collins, David Court
The relative age effect (RAE) has been highlighted extensively within literature as influencing selection and identification within sports. However, this initial bias appears to not be systemic in some talent development systems. Accordingly, we report an investigation into the initial identification, selection and conversion of academy players from professional Rugby Union and Cricket at national level. Reflecting previous studies, data again demonstrated a reversal of RAE advantage whereby relatively young players from both sports were less likely to be selected into their respective national academy systems but were more likely to transition into senior national squads...
August 2016: Journal of Sports Sciences
https://www.readbyqxmd.com/read/26557207/relative-age-effect-in-uefa-championship-soccer-players
#19
Sixto González-Víllora, Juan C Pastor-Vicedo, David Cordente
Relative Age Effect (RAE) is the breakdown by both age grouping and dates of birth of athletes. In the past 20 years the existence of this effect has been shown with higher or smaller impact in multiple sports, including soccer. The purpose of this study was to identify the existence of RAE in European soccer players. The sample included 841 elite soccer players who were participants in the UEFA European Soccer Championship in different categories. The professional category (n = 368), U-19 (n = 144) and U-17 (n = 145) were in 2012, and U-21 was in 2011 (n = 184)...
September 29, 2015: Journal of Human Kinetics
https://www.readbyqxmd.com/read/26517552/the-relative-age-effect-and-its-influence-on-academic-performance
#20
Juan-José Navarro, Javier García-Rubio, Pedro R Olivares
INTRODUCTION AND PURPOSE: The policy of school organisation for grouping students in the same academic year is based on date of birth. The differences in the experiences and maturation of older students involve a relatively better performance in academic settings, which is known as the relative age effect (RAE). This effect is more important the younger the student is. The goal of this study is to identify the connections of influence that RAE, socioeconomic status (SES), and type of institution have on academic performance in a school population of eighth graders...
2015: PloS One
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