THE RELATIVE AGE EFFECT IN THE WORLD JUNIOR TENNIS FINALS 2012–2016 (MALE)

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F62690094%3A18440%2F17%3A50014554" target="_blank" >RIV/62690094:18440/17:50014554 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/00216224:14510/17:00102553

Výsledek na webu

<a href="http://conference.fsps.muni.cz/media/3065171/proceedings-of-the-11th-conference-on-kinanthropology.pdf" target="_blank" >http://conference.fsps.muni.cz/media/3065171/proceedings-of-the-11th-conference-on-kinanthropology.pdf</a>

DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

THE RELATIVE AGE EFFECT IN THE WORLD JUNIOR TENNIS FINALS 2012–2016 (MALE)

Popis výsledku v původním jazyce

The issue of the Relative Age Effect (RAE) deals with the differences between the chronological age and the degree of the biological development of individuals. Mainly in the period of pubescence, big differences have been noticed in various areas (mental, anthropometric, strength, etc.) between individuals born in the beginning and in the end of the year/season. Biological acceleration resulting from earlier birth date tends to be confused with sports talent; the influence of RAE shows itself most often in junior categories. This fact has been confirmed by research in a number of collective and individual sports, especially in soccer, ice hockey and tennis. The results of research studies of RAE in tennis have shown that the influence of RAE is more evident in boys than in girls. The aim of the study was to verify the influence of RAE in players of the World Junior Tennis Finals (WJTF) in 2012-2016 (n=240). They were grouped in three-member teams of individual countries, which means 48 players in the age 13-14 years took part each year. The research data (birth dates, results of WJTF matches) has been taken from the official tournament materials of the ITF. The data has been analyzed according to selected criteria (the whole observed period, individual years, semi-final matches, and ranking of players in team nominations). Verification of specific distribution was done by means of the Kolmogorov-Smirnov test (variations on goodness-of-fit) and the chi-squared test (variations on goodness-of-fit). A significant influence of RAE has been statistically proven in the whole sample (n=240) in the observed period 2012-2016 (c2 =108.6, p=0.00) and in individual years too. A significantinfluence of RAE has been proven in the players of the semi-final matches (c2 =42.06, p=0.00) in the whole observed period (2012–2016), however, it was lower than in the players of the whole observed sample. The influence of RAE has been proven in years 2012 (Dmax=0.51, CV=0.375) and 2016 (Dmax=0.59, CV=0.375) of semi-final matches in individual years. The influence of RAE has been proven according to the criterion‘ ranking of players in team nominations’ (1st, 2nd or 3rd player); the higher influence of RAE was observed in the first nominated players c2 =44.68, p=0.00) than in the second nominated players (c2 =38.14, p=0.00) or the third ones (c2 =29.37, p=0.00). It can be stated that in the observed sample of tennis players, the influence of RAE has been confirmed in the whole observed period; a lower influence has been found in the players of semi-final matches. Further, it has been found that the influence of RAE shows itself also in players’ nominations of individual national teams. The mentioned conclusions can be considered important for sports practice, especially for coaches, athletes and also parents.

Název v anglickém jazyce

THE RELATIVE AGE EFFECT IN THE WORLD JUNIOR TENNIS FINALS 2012–2016 (MALE)

Popis výsledku anglicky

The issue of the Relative Age Effect (RAE) deals with the differences between the chronological age and the degree of the biological development of individuals. Mainly in the period of pubescence, big differences have been noticed in various areas (mental, anthropometric, strength, etc.) between individuals born in the beginning and in the end of the year/season. Biological acceleration resulting from earlier birth date tends to be confused with sports talent; the influence of RAE shows itself most often in junior categories. This fact has been confirmed by research in a number of collective and individual sports, especially in soccer, ice hockey and tennis. The results of research studies of RAE in tennis have shown that the influence of RAE is more evident in boys than in girls. The aim of the study was to verify the influence of RAE in players of the World Junior Tennis Finals (WJTF) in 2012-2016 (n=240). They were grouped in three-member teams of individual countries, which means 48 players in the age 13-14 years took part each year. The research data (birth dates, results of WJTF matches) has been taken from the official tournament materials of the ITF. The data has been analyzed according to selected criteria (the whole observed period, individual years, semi-final matches, and ranking of players in team nominations). Verification of specific distribution was done by means of the Kolmogorov-Smirnov test (variations on goodness-of-fit) and the chi-squared test (variations on goodness-of-fit). A significant influence of RAE has been statistically proven in the whole sample (n=240) in the observed period 2012-2016 (c2 =108.6, p=0.00) and in individual years too. A significantinfluence of RAE has been proven in the players of the semi-final matches (c2 =42.06, p=0.00) in the whole observed period (2012–2016), however, it was lower than in the players of the whole observed sample. The influence of RAE has been proven in years 2012 (Dmax=0.51, CV=0.375) and 2016 (Dmax=0.59, CV=0.375) of semi-final matches in individual years. The influence of RAE has been proven according to the criterion‘ ranking of players in team nominations’ (1st, 2nd or 3rd player); the higher influence of RAE was observed in the first nominated players c2 =44.68, p=0.00) than in the second nominated players (c2 =38.14, p=0.00) or the third ones (c2 =29.37, p=0.00). It can be stated that in the observed sample of tennis players, the influence of RAE has been confirmed in the whole observed period; a lower influence has been found in the players of semi-final matches. Further, it has been found that the influence of RAE shows itself also in players’ nominations of individual national teams. The mentioned conclusions can be considered important for sports practice, especially for coaches, athletes and also parents.

Druh

D - Stať ve sborníku

CEP obor

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OECD FORD obor

50901 - Other social sciences

Projekt

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Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2017

Kód důvěrnosti údajů

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

Název statě ve sborníku

Proceedings of the 11th International Conference on Kinanthropology

ISBN

978-80-210-8917-4

ISSN

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e-ISSN

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Počet stran výsledku

9

Strana od-do

322-330

Název nakladatele

Fakulta sportovních studií, Masarykova Univerzita, Česká republika

Místo vydání

Brno, Česká republika

Místo konání akce

Brno, Česká Republika

Datum konání akce

29. 11. 2017

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

000467203700033