Yazar "Akinci, Yasin" seçeneğine göre listele

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    Born early, perform better: The impact of relative age on performance in Turkish youth basketball
    (Sage Publications Ltd, 2025) Akinci, Yasin; Yapar, Ahmet; Kaki, Baris
    This study investigated the relative age effect (RAE) and its impact on performance in male basketball players participating in Turkish youth championships across U14, U16, and U18 age categories between 2017 and 2023 except 2020-2021 because of COVID-19 pandemics. An archival data model was employed, analysing data from 3113 players between 2017 and 2023. The months of birth were divided into four three-month periods and called Q1 to Q4. Statistical analyses included Chi-square tests with odds ratios, Welch ANOVA, and principal component analysis (PCA) used to visualize performance variable structures. Results indicated a significant RAE across all age groups, with Q1-born players consistently overrepresented and demonstrating superior performance in key metrics such as playing time, points, field goals, and efficiency score. The RAE was most pronounced in the U14 category, peaked at U16, and, while still present, was less prominent in U18, suggesting a convergence of biological maturity and the increasing influence of technical-tactical skills at older ages. PCA further revealed that early-born players were more likely to occupy central and productive roles on the court. These findings emphasize that coaches and policy-makers should consider RAE in their selection processes to ensure that long-term potential is not overlooked due to initial age-related disparities.
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    Evidence for the reversal of the relative age effect in European professional basketball
    (Routledge Journals, Taylor & Francis Ltd, 2025) Akinci, Yasin; Yapar, Ahmet
    The Relative Age Effect (RAE) refers to how the selection process based on birthdates can influence athletic success and development. This study investigates the RAE in European professional basketball, focusing on its effects on roster composition, player performance, and team efficiency. Data from 2,571 male players across the top 10 European leagues in the 2022/23 season were analysed. The analysis utilised chi-square tests to evaluate birth quartile distribution, ANOVA for assessing playing time and efficiency scores, and correlation analyses to explore the relationship between birth quartile distribution and team success in league level. The findings confirm the existence of RAE, revealing an over-representation of players born in the first quarter of the year. However, contrary to expectations, players born in the last quarter received more playing time and had higher efficiency scores, particularly in the Turkish and Italian leagues. Additionally, a weak negative correlation was found between team success and RAE, suggesting that teams with a higher proportion of first quarter-born players performed worse. The study highlights the limitations of age-based selection and calls for alternative talent identification methods that could be beneficial for long-term career outcomes in professional basketball.
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    Regional Differences in Game-Related Statistics Across to Top European Basketball Leagues
    (Natl Cave Research & Protection Organization, India, 2020) Akinci, Yasin; Yapar, Ahmet
    The analysis was performed on all matches (n = 1239) in the five national leagues (France, Greece, Italy, Spain, and Turkey) of the 2018-2019 season. A one-way welch analys is of variance followed by a Games-Howell post hoc test was performed to assess differences in game-related statistics between the leagues. Game-related statistics that discriminate among the leagues were assessed by factorial discriminant analysis. France and Spain, most similar leagues but Italy and Turkey most differed leagues regarding GRS. Fouls and assists were the most distinguished among the leagues and demonstrated the most significant effect size. The discriminant analysis yielded four significant functions. The results of this study suggest that professional basketball games were played differently in each designated leagues of Europe.