Longitudinal Study of the Influence of the Relative Age Effect (RAE) on Czech Tennis Players Aged 10 - 12.

Koloničný, Roman; Bozděch, Michal; Zháněl, Jiří

doi:10.5817/sts2018-1-14

Cited by 3 publications

(2 citation statements)

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“…The results of our study demonstrate that the majority of male professional tennis players that ranked among the best 100 tennis players in the ATP Rankings in the years 2016-2018 were born in Q 2 , though this finding is not in agreement with the results of studies concerning the influence of RAE in junior categories. The majority of these studies found a predominance of players born in Q 1 with a falling trend of the frequency of players born in the individual quarters up to Q 4 (Agricola et al, 2017;Bozděch et al, 2017;Koloničný et al, 2018;Ulbricht et al, 2015). As an example, we give the results of Bozděch et al (2017) who studied the influence of RAE at the World Junior Tennis Finals (WJTF, male, n=240) in the years 2012-2016.…”

Section: Discussionmentioning

confidence: 99%

A Comparative Study of primary school teachers’ attitudes and opinions towards inclusive education in the South Moravian Region and Split-Dalmatian County

Stračárová¹

2020

Proceedings of the 12th International Conference on Kinanthropology

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The research is focused on teachers‘ approaches, opinions, and visions concerning inclusive education in the South Moravian Region and the Split-Dalmatian County. Further to that, it analyses the degree of Inclusion in these areas. The relationship of pedagogues towards Inclusion, due to a steep increase of specific disorders, is extremely important. The research was made in the year when the inclusive education bill was passed in the Czech Republic. Data was collected in the first school year when schools in Czech Republic functioned as in-clusive. Data collection took place in Split-Dalmatian county in 2016 and the South Moravian Region in 2017. The research is qualitative, an open-question questionnaire was made, and a non-structured interview was made when visiting schools. We set the following hypothe-ses. We assume that teachers of selected schools of the Split-Dalmatia County evaluate Inclusion more negatively than teachers of selected primary schools in the South Moravian Region. This hypothesis is not confirmed. We expect that Inclusion will take place in selected elementary schools in the South Moravian Region more than in selected elementary schools in Split-Dalmatia County. This hypothesis is not confirmed. This research is based on the methodology and data from the diploma thesis of Nikola Stračárová 2017 (Stračárová, 2017).

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Section: Discussionmentioning

confidence: 99%

A Comparative Study of primary school teachers’ attitudes and opinions towards inclusive education in the South Moravian Region and Split-Dalmatian County

Stračárová¹

2020

Proceedings of the 12th International Conference on Kinanthropology

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“…Ulbricht et al (2015) showed that the effect of RAE was stronger with increasing performance level and age category. Also, a longitudinal study of a large cohort of Czech male tennis players (U12, n = 1500) showed a significant existence of RAE (Koloničný, Bozděch, & Zháněl, 2018).…”

Section: Introductionmentioning

confidence: 97%

Talent identification among elite Czech male junior tennis players (U12) according to their future tennis performance and birthdate

Polách,

Jiří,

Agricola

et al. 2023

sportk

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Talent identification (TI) in sport, which is the selection of individuals disposed to achieve elite performance in adulthood, is often based on physical fitness testing. TI is linked to the phenomenon called the Relative Age Effect (RAE), referring to the influence of birthdate on sports performance. This retrospective study is based on the assumption that elite adult athletes possessed indicators predictive of a successful career already at a young age. The study aimed to assess the differences among Czech male tennis players according to 1) their tennis performance in adulthood, 2) their birthdate in each semester (S). The participants were players U12 who were later among top 1000 in the ATP Singles Rankings (SR). The research data was obtained during regular testing of the Czech Tennis Association (1998–2019). Significant differences between subgroups R1 (SR 1st - 500th) and R2 (SR 501st - 1000th) were found, surprisingly in favor of R2 in 4 variables. Significant differences were found in favor of B1 (born in S1) in 2 variables, and in favor of B2 (born in S2) in 2 variables. La identificación de talentos (IT) en el deporte, que es la selección de individuos dispuestos a lograr un rendimiento de élite en la edad adulta, a menudo se basa en pruebas de aptitud física. La IT está relacionada con el fenómeno llamado Efecto de la Edad Relativa (EER), que se refiere a la influencia de la fecha de nacimiento en el rendimiento deportivo. Este estudio retrospectivo se basa en la suposición de que los atletas adultos de élite poseían indicadores predictivos de una carrera exitosa desde una edad temprana. El estudio tuvo como objetivo evaluar las diferencias entre los tenistas masculinos checos según 1) su rendimiento en el tenis en la edad adulta, 2) su fecha de nacimiento en cada semestre (S). Los participantes fueron jugadores sub-12 que más tarde se ubicaron entre los 1000 mejores en el Ranking ATP de Individuales. Los datos de la investigación se obtuvieron durante las pruebas periódicas de la Asociación Checa de Tenis (1998-2019). Se encontraron diferencias significativas entre los subgrupos R1 (ranking 1 - 500) y R2 (ranking 501 - 1000), sorprendentemente favorables a R2 en 4 variables. Se encontraron diferencias significativas favorables a B1 (nacidos en S1) en 2 variables, y favorables a B2 (nacidos en S2) en 2 variables.

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The Relative Age Effect in the Top 100 ATP Tennis Players 2016–2018

Bozděch¹,

Agricola²,

Nykodým³

et al. 2020

Proceedings of the 12th International Conference on Kinanthropology

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The issue of the Relative Age Effect (RAE) has been monitored in the field of sports for more than 30 years. Its theoretical framework is based on the premise that during the pubescent period athletes born at the beginning of the year experience earlier biological acceleration re-sulting in a higher level of physiological, mental, morphological and psychological attributes than their later-born peers. A number of publications show that this temporary advantage often manifests itself in elite competitions at the junior level, but gradually disappears during the transition to professional senior competitions. The aim of this work was to determine the level of the RAE in the elite 100 ATP tennis players (ATP Rankings) in 2016–2018. To assess the influence of the RAE, the Chi-Squared (ꭕ2) test in the variant of Goodness of Fit was used for the assessment of the conformity of expected and observed frequency distribution due to the categorical character of the research data and the large sample size. The Cohen’s w val-ue calculation was used to assess the effect size (ES, since it is not a random representative selection of elements of the research set) of the ꭕ2 test values. The odds ratio (OR) was used to assess the chance of players from the Q individual quarters to get among the best 100 players. The results show that, in terms of effect size (ES), the effect of birth date in all the Top 100 players is small (w = .22) during the entire observed period 2016–2018; the influence of RAE is therefore dismissed. The ES in the individual years is again small (w = .21–.25); the influence of RAE is also dismissed. In analysing the effect of birth date, the mean rate of effect size was found in tennis players in positions 1 to 25 (w = .46) as well as in tennis play-ers in positions 51 to 75 (w = .37); the RAE influence is therefore not rejected. Only a small measure of effect size was found between positions 26 to 50 and 76 to 100 (w = .21–.25); the RAE influence is rejected. No statistically significant difference has been found between the observed and expected distribution of birth date between the observed quarters of the year (odds ratio test, p > .05) and it has not, therefore, been proven that tennis players from any of the quarters Q –Q had a better chance of getting among the Top 100 tennis players. It can be concluded that professional senior tennis had not shown the RAE influence to the extent usual in junior categories during the observed period of 2016–2018.

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Longitudinal Study of the Influence of the Relative Age Effect (RAE) on Czech Tennis Players Aged 10 - 12.

Cited by 3 publications

References 10 publications

A Comparative Study of primary school teachers’ attitudes and opinions towards inclusive education in the South Moravian Region and Split-Dalmatian County

A Comparative Study of primary school teachers’ attitudes and opinions towards inclusive education in the South Moravian Region and Split-Dalmatian County

Talent identification among elite Czech male junior tennis players (U12) according to their future tennis performance and birthdate

The Relative Age Effect in the Top 100 ATP Tennis Players 2016–2018

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