THE RELATIVE AGE EFFECT IN THE TOP 100 ATP TENNIS PLAYERS 2016-2018

Kód výsledku v IS VaVaI

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RIV/62690094:18440/20:50018139

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

THE RELATIVE AGE EFFECT IN THE TOP 100 ATP TENNIS PLAYERS 2016-2018

Popis výsledku v původním jazyce

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 resulting 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 (X-2) 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 value 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 X-2 test values. The odds ratio (OR) was used to assess the chance of players from the Q(i) 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 players 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 &gt;.05) and it has not, therefore, been proven that tennis players from any of the quarters Q(1)-Q(4) 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.

Název v anglickém jazyce

THE RELATIVE AGE EFFECT IN THE TOP 100 ATP TENNIS PLAYERS 2016-2018

Popis výsledku anglicky

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 resulting 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 (X-2) 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 value 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 X-2 test values. The odds ratio (OR) was used to assess the chance of players from the Q(i) 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 players 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 &gt;.05) and it has not, therefore, been proven that tennis players from any of the quarters Q(1)-Q(4) 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.

Druh

D - Stať ve sborníku

CEP obor

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OECD FORD obor

30306 - Sport and fitness sciences

Projekt

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Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2020

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název statě ve sborníku

12th International Conference on Kinanthropology - Sport and Quality of Life

ISBN

9788021096318

ISSN

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e-ISSN

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Počet stran výsledku

8

Strana od-do

240-247

Název nakladatele

MASARYK UNIVERSITY-UNIVERSITY PRESS

Místo vydání

Brno

Místo konání akce

Brno

Datum konání akce

1. 1. 2019

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

000618047200031