Discrimination of U-14 Soccer Players by Level and Position

Abstract

Adolescence is often viewed as a critical period for selection in youth soccer. The present study compared the characteristics of regionally selected and non-selected under-14 players (U-14) as a group and by position. Players were classified as local (n=69) and regional (n=45). Weight, height, skinfolds, functional capacities, soccer skills and goal orientation were measured and skeletal age was assessed with the Fels method. Factorial ANOVA was used to test the effect of selection, position and respective interaction terms, while discriminant analysis was used to identify the variables that contributed to selection. Selected players had an advanced maturity status (F=24.97, p<0.01), were heavier (F=30.67, p<0.01) and taller (F=35.07, p<0.01); performed better in explosive power (F=21.25, p<0.01), repeated sprints (F=20.04, p<0.01) and ball control (F=3.69, p<0.05); and were more ego oriented (F=13.29, p<0.01). The 2 competitive groups did not differ in agility, aerobic endurance, dribbling, shooting, passing, and task orientation. Position-related variation was negligible. The percentage of players who were correctly classified in the original groups was slightly lower when the analysis was performed for the total sample (86%) than by position (86–90%). Future research on talent identification and selection should adopt a multidimensional approach including variables related to the physiological, perceptual, cognitive and tactical demands.

Key words

young athletes - growth - maturation - sport selection - specialization - goal orientations

References

• 1 Bangsbo J. Fitness Training in Football: A Scientific Approach. Copenhagen: August Krogh Institute; 1994
• 2 Bosco C, Luhtanen P, Komi PV. A simple method for measurement of mechanical power in jumping.  Eur J Appl Physiol. 1983;  50 273-282
• 3 Coelho e Silva MJ, Figueiredo AJ, Carvalho HM, Malina RM. Functional capacities and sport-specific skills of 14- to 15-year-old male basketball players.  Eur J Sport Sci. 2008;  8 277-285
• 4 Duda JL. Achievement Goal Research in Sport: Pushing the Boundaries and Clarifying some Misunderstandings. In: Roberts GC, (ed) Advances in motivation in sport and exercise. Champaign, Illinois: Human Kinetics; 2001: 129-182
• 5 Figueiredo AJ, Goncalves CE, Coelho e Silva MJ, Malina RM. Characteristics of youth soccer players who drop out, persist or move up.  J Sports Sci. 2009;  27 883-891
• 6 Figueiredo AJ, Goncalves CE, Coelho e Silva MJ, Malina RM. Youth soccer players, 11–14 years: maturity, size, function, skill and goal orientation.  Ann Hum Biol. 2009;  36 60-73
• 7 Fonseca AM, Biddle SJ. Estudo inicial para a adaptação do Task and Ego Orientation in Sport Questionnaire (TEOSQ) à realidade portuguesa. IVth International Conference on Psychological Assessment: Development and Contexts; 1996
• 8 Gil S, Ruiz F, Irazusta A, Gil J, Irazusta J. Selection of young soccer players in terms of anthropometric and physiological factors.  J Sports Med Phys Fitness. 2007;  47 25-32
• 9 Gil SM, Gil J, Ruiz F, Irazusta A, Irazusta J. Physiological and anthropometric characteristics of young soccer players according to their playing position: relevance for the selection process.  J Strength Cond Res. 2007;  21 438-445
• 10 Harriss DJ, Atkinson G. International Journal of Sports Medicine – Ethical Standards in Sport and Exercise Science Research.  Int J Sports Med. 2009;  30 701-702
• 11 Kirkendall DT, Gruber J, Johnson R. Measurement and Evaluation in Physical Education. Champaign, Illinois: Human Kinetics; 1987
• 12 Kuczmarski RJ, Ogden CL, Grummer-Strawn LM, Felgal KM, Guo SS, Wei R, Mei Z, Curtin LR, Roche AF, Johnson CL. 2000 CDC growth charts for the United States: methods and development: Vital Health Stat 11.  2002;  246 1-190
• 13 Lohman TG, Roche AF, Martorell R. Anthropometric Standardization Reference Manual. Champaign, Illinois: Human Kinetics; 1988
• 14 Malina RM. Physical growth and maturation of young athletes.  Exerc Sport Sci Rev. 1994;  22 389-433
• 15 Malina RM. Anthropometry. In: Maud PJ, Foster C, (eds) Physiological assessment of human fitness. Champaign, Illinois: Human Kinetics; 1995: 205-220
• 16 Malina RM, Bouchard C, Bar-Or O. Growth, Maturation and Physical Activity. Champaign, Illinois: Human Kinetics; 2004
• 17 Malina RM, Chamorro M, Serratosa L, Morate F. TW3 and Fels skeletal ages in elite youth soccer players.  Ann Hum Biol. 2007;  34 265-272
• 18 Malina RM, Cumming SP, Kontos AP, Eisenmann JC, Ribeiro B, Aroso J. Maturity-associated variation in sport-specific skills of youth soccer players aged 13–15 years.  J Sports Sci. 2005;  23 515-522
• 19 Malina RM, Eisenmann JC, Cumming SP, Ribeiro B, Aroso J. Maturity-associated variation in the growth and functional capacities of youth football (soccer) players 13–15 years.  Eur J Appl Physiol. 2004;  91 555-562
• 20 Malina RM, Pena Reyes ME, Eisenmann JC, Horta L, Rodrigues J, Miller R. Height, mass and skeletal maturity of elite Portuguese soccer players aged 11–16 years.  J Sports Sci. 2000;  18 685-693
• 21 Malina RM, Ribeiro B, Aroso J, Cumming SP. Characteristics of youth soccer players aged 13–15 years classified by skill level.  Br J Sports Med. 2007;  41 290-295
• 22 Mallet CJ, Hanrahan SJ. Elite athletes: Why does the fire burn so brightly.  Psychol Sport Exerc. 2004;  5 183-200
• 23 Ommundsen Y, Roberts GC, Lemyre PN, Miller BW. Peer relationships in adolescent competitive soccer: Associations to perceived motivational climate, achievement goals and perfectionism.  J Sports Sci. 2005;  23 977-989
• 24 Rampinini E, Bishop D, Marcora SM, Ferrari Bravo D, Sassi R, Impellizzeri FM. Validity of simple field tests as indicators of match-related physical performance in top-level professional soccer players.  Int J Sports Med. 2007;  28 228-235
• 25 Reilly T. Assessment of performance in team games. In: Eston RG, Reilly T (eds) Kinanthropometry and Exercise Physiology Laboratory Manual: Tests, Procedures and Data. London: Routledge; 2001: 171-182
• 26 Reilly T, Doran D. Fitness assessment. In:, Reilly T, Williams AM, (eds) Science and Soccer. London: Routledge; 2003: 21-46
• 27 Reilly T, Williams AM, Nevill A, Franks A. A multidisciplinary approach to talent identification in soccer.  J Sports Sci. 2000;  18 695-702
• 28 Roche A, Chumlea W, Thissen D. Assessing the skeletal maturity of the hand wrist – FELS method. Springfield, Illinois: C. C. Thomas; 1988
• 29 Roescher CR, Elferink-Gemser MT, Huijgen BC, Visscher C. Soccer endurance development in professionals.  Int J Sports Med. 2010;  31 174-179
• 30 Smith RE, Smoll FL, Cumming SP. Motivational climate and changes in young athletes’ achievement goal orientations.  Motiv Emot. 2009;  3 173-183
• 31 Stornes R, Ommundsen Y. Achievement goals, motivational climate and sportspersonship: a study of young handball players.  Scand J Educ Res. 2004;  48 205-221
• 32 Vaeyens R, Malina RM, Janssens M, Van Renterghem B, Bourgois J, Vrijens J, Philippaerts RM. A multidisciplinary selection model for youth soccer: the Ghent Youth Soccer Project.  Br J Sports Med. 2006;  40 928-934
• 33 Van-Yperen NW, Duda JL. Goal orientations, beliefs about success, and performance improvement among young elite Dutch soccer players.  Scand J Med Sci Sports. 1999;  9 358-364
• 34 Williams AM, Reilly T. Talent identification and development in soccer.  J Sports Sci. 2000;  18 657-667

Correspondence