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A retrospective study on anthropometrical, physical fitness, and motor coordination characteristics that influence dropout, contract status, and first-team playing time in high-level soccer players aged eight to eighteen years

Dieter Deprez (UGent) , Job Fransen (UGent) , Matthieu Lenoir (UGent) , Renaat Philippaerts (UGent) and Roel Vaeyens (UGent)
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Abstract
The goal of this article was twofold, and a 2-study approach was conducted. The first study aimed to expose the anthropometrical, physical performance, and motor coordination characteristics that influence dropout from a high-level soccer training program in players aged 8-16 years. The mixed-longitudinal sample included 388 Belgian youth soccer players who were assigned to either a "club group" or a "dropout group." In the second study, cross-sectional data of anthropometry, physical performance, and motor coordination were retrospectively explored to investigate which characteristics influence future contract status (contract vs. no contract group) and first-team playing time for 72 high-level youth soccer players (mean age = 16.2 years). Generally, club players outperformed their dropout peers for motor coordination, soccer-specific aerobic endurance, and speed. Anthropometry and estimated maturity status did not discriminate between club and dropout players. Contract players jumped further (p = 0.011) and had faster times for a 5-m sprint (p = 0.041) than no contract players. The following prediction equation explains 16.7% of the variance in future playing minutes in adolescent youth male soccer players: 22,869.3 + 14.6 x standing broad jump. Practitioners should include the evaluation of motor coordination, aerobic endurance, and speed performances to distinguish high-level soccer players further succeeding a talent development program and future dropout players, between 8 and 16 years. From the age of 16 years, measures of explosivity are supportive when selecting players into a future professional soccer career.
Keywords
ELITE, PARTICIPATION, football, CHILDREN, PERFORMANCE, SPORT, TALENT IDENTIFICATION, RELATIVE AGE, YOUTH SOCCER, MATURITY-ASSOCIATED VARIATION, performance, maturity, selection, development, talent, COMPETITION

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Chicago
Deprez, Dieter, Job Fransen, Matthieu Lenoir, Renaat Philippaerts, and Roel Vaeyens. 2015. “A Retrospective Study on Anthropometrical, Physical Fitness, and Motor Coordination Characteristics That Influence Dropout, Contract Status, and First-team Playing Time in High-level Soccer Players Aged Eight to Eighteen Years.” Journal of Strength and Conditioning Research 29 (6): 1692–1704.
APA
Deprez, D., Fransen, J., Lenoir, M., Philippaerts, R., & Vaeyens, R. (2015). A retrospective study on anthropometrical, physical fitness, and motor coordination characteristics that influence dropout, contract status, and first-team playing time in high-level soccer players aged eight to eighteen years. JOURNAL OF STRENGTH AND CONDITIONING RESEARCH, 29(6), 1692–1704.
Vancouver
1.
Deprez D, Fransen J, Lenoir M, Philippaerts R, Vaeyens R. A retrospective study on anthropometrical, physical fitness, and motor coordination characteristics that influence dropout, contract status, and first-team playing time in high-level soccer players aged eight to eighteen years. JOURNAL OF STRENGTH AND CONDITIONING RESEARCH. 2015;29(6):1692–704.
MLA
Deprez, Dieter, Job Fransen, Matthieu Lenoir, et al. “A Retrospective Study on Anthropometrical, Physical Fitness, and Motor Coordination Characteristics That Influence Dropout, Contract Status, and First-team Playing Time in High-level Soccer Players Aged Eight to Eighteen Years.” JOURNAL OF STRENGTH AND CONDITIONING RESEARCH 29.6 (2015): 1692–1704. Print.
@article{6868472,
  abstract     = {The goal of this article was twofold, and a 2-study approach was conducted. The first study aimed to expose the anthropometrical, physical performance, and motor coordination characteristics that influence dropout from a high-level soccer training program in players aged 8-16 years. The mixed-longitudinal sample included 388 Belgian youth soccer players who were assigned to either a {\textacutedbl}club group{\textacutedbl} or a {\textacutedbl}dropout group.{\textacutedbl} In the second study, cross-sectional data of anthropometry, physical performance, and motor coordination were retrospectively explored to investigate which characteristics influence future contract status (contract vs. no contract group) and first-team playing time for 72 high-level youth soccer players (mean age = 16.2 years). Generally, club players outperformed their dropout peers for motor coordination, soccer-specific aerobic endurance, and speed. Anthropometry and estimated maturity status did not discriminate between club and dropout players. Contract players jumped further (p = 0.011) and had faster times for a 5-m sprint (p = 0.041) than no contract players. The following prediction equation explains 16.7\% of the variance in future playing minutes in adolescent youth male soccer players: 22,869.3 + 14.6 x standing broad jump. Practitioners should include the evaluation of motor coordination, aerobic endurance, and speed performances to distinguish high-level soccer players further succeeding a talent development program and future dropout players, between 8 and 16 years. From the age of 16 years, measures of explosivity are supportive when selecting players into a future professional soccer career.},
  author       = {Deprez, Dieter and Fransen, Job and Lenoir, Matthieu and Philippaerts, Renaat and Vaeyens, Roel},
  issn         = {1064-8011},
  journal      = {JOURNAL OF STRENGTH AND CONDITIONING RESEARCH},
  keyword      = {ELITE,PARTICIPATION,football,CHILDREN,PERFORMANCE,SPORT,TALENT IDENTIFICATION,RELATIVE AGE,YOUTH SOCCER,MATURITY-ASSOCIATED VARIATION,performance,maturity,selection,development,talent,COMPETITION},
  language     = {eng},
  number       = {6},
  pages        = {1692--1704},
  title        = {A retrospective study on anthropometrical, physical fitness, and motor coordination characteristics that influence dropout, contract status, and first-team playing time in high-level soccer players aged eight to eighteen years},
  url          = {http://dx.doi.org/10.1519/JSC.0000000000000806},
  volume       = {29},
  year         = {2015},
}

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