Journal articles: 'Australian youth soccer players'

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Bennett, Kyle JM, Andrew R. Novak, Matthew A. Pluss, Aaron J. Coutts, and Job Fransen. "A multifactorial comparison of Australian youth soccer players’ performance characteristics." International Journal of Sports Science & Coaching 15, no. 1 (December 5, 2019): 17–25. http://dx.doi.org/10.1177/1747954119893174.

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The current study aimed to investigate the performance characteristics that discriminate Australian youth soccer players according to their academy status. A total of 165 youth soccer players participated in this study and were sub-divided into either an early adolescence ( n = 92, age = 13.0 ± 0.6 years) or mid-adolescence ( n = 73 age = 14.8 ± 0.6 years) group. Players completed multifactorial assessments of anthropometry, motor competence, physical fitness, decision-making and psychological traits. Statistical significance was set at p ≤ 0.05. Multivariate analysis of variance identified dynamic balancing ability (both age groups), object manipulation (mid-adolescence), lateral jumping ability (both age groups), linear speed over 5 m (both age groups), change of direction skill (mid-adolescence), intermittent aerobic endurance (mid-adolescence) and total response time on a decision-making assessment (early adolescence) to discriminate academy status. Interestingly, a binomial logistical regression showed that a 0.1 s decrease in sprint time (i.e. running faster) increased the odds of a player belonging to a tier one academy by 19% and 47% for early and mid-adolescent players, respectively. Overall, performance in the motor competence and physical fitness assessments were in favour of the tier one academy players. These findings are indicative of a potential selection bias in the Australian talent pool or a training effect whereby tier one academy programmes emphasise the development of physical attributes. However, future research is required to further substantiate this in a larger sample of youth soccer players from other playing regions within Australia.

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Keller, Brad S., Annette J. Raynor, Lyndell Bruce, and Fiona Iredale. "Technical attributes of Australian youth soccer players: Implications for talent identification." International Journal of Sports Science & Coaching 11, no. 6 (November 29, 2016): 819–24. http://dx.doi.org/10.1177/1747954116676108.

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Objectives To determine whether the technical ability of Australian youth soccer players could distinguish between various playing levels. Design A cross-sectional observational design was used with each player required to complete four technical tests. Methods Sixty-two participants were representatives of three cohorts of youth soccer in Australia: national elite ( n = 18), state elite ( n = 22) and sub-elite ( n = 22). The technical tests used were Loughborough Short Passing Test (LSPT), long passing test (LPT), shooting test and speed dribbling, with all players familiarised with the tests prior to data collection. Differences between cohorts were analysed using a multiple analysis of variance test with follow-up analyses of variance and Tukey Honest Significant Difference post-hoc test, which were subsequently used to inform a sensitivity analysis, more specifically a bootstrapped receiver operating curve to determine cut-off scores for each variable. Results The national elite cohort scored better than state- and sub-elite cohorts on the LSPT, however, the state elite produced the fastest time before penalties. The sub-elite cohort scored less points on the LPT compared to both national- and state-elite cohorts, on both feet. In regards to speed dribbling, national-elite players were faster than both the state- and sub-elite cohorts. Shooting accuracy and velocity were able to discriminate the national- and sub-elite cohorts on the dominant foot, with shooting velocity on the nondominant foot being faster for the national elite compared to both the state- and sub-elite cohorts. Conclusions A number of differences in technical ability were identified between varying levels of Australian youth soccer players. Youth soccer coaches and sports scientists should use the cut-off scores for the technical tests in the talent identification and development process, with aspiring players aiming to reach these levels.

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Keller, Brad S., Annette J. Raynor, Lyndell Bruce, and Fiona Iredale. "Physical and anthropometrical attributes of Australian youth soccer players." International Journal of Sports Science & Coaching 13, no. 5 (January 10, 2018): 787–93. http://dx.doi.org/10.1177/1747954117752904.

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Objectives To determine whether Australian youth soccer players of varying levels could be distinguished based on their anthropometrical and physical attributes. Design A cross-sectional observational design was used, involving six anthropometrical and physical tests for each player. Methods Participants represented three youth levels of competition, namely national elite (n = 18), state elite (n = 22) and sub-elite (n = 22). Anthropometrical and physical tests included standing height; body mass; 5, 10, 30 m sprint and 20 m ‘flying start’ sprint; zig-zag agility test; vertical jump and Yo-Yo Intermittent Recovery test level 1. A multiple analysis of variance for the main effect of cohort, with a follow-up ANOVA and Tukey's Honest Significant Difference were used to discern which attributes differed between each cohort. Receiver operating characteristic curves were calculated, providing cut-off values between cohorts. Results The national elite cohort was significantly taller than the state elite cohort (ES = 0.94) and faster than the sub-elite athletes across 30 m (ES = 0.79) and 20 m with a flying start (ES = 0.77) (P < 0.05). The national elite cohort had a significantly higher level of intermittent endurance, compared to the state elite athletes who also performed better than the sub-elite cohort. The discrepancy between groups in the Yo-Yo Intermittent Recovery test level 1 was exemplified by the receiver operating characteristic with 94.1% of national elite players running further than 1980 m, while 95.7% of state elite and 100% of sub-elite players failed to reach this distance (ES = 0.88–1.77). Conclusions It is evident that anthropometrical and physical attributes differ between youth cohorts, particularly intermittent endurance. It is important to use this knowledge to enhance the current processes used to identify future talent for success in Australian soccer.

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Keller, Brad S., Annette J. Raynor, Fiona Iredale, and Lyndell Bruce. "Tactical skill in Australian youth soccer: Does it discriminate age-match skill levels?" International Journal of Sports Science & Coaching 13, no. 6 (February 26, 2018): 1057–63. http://dx.doi.org/10.1177/1747954118760778.

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Objectives Football Federation Australia (FFA) has identified that Australian athletes are proficient physically, however often lack the technical and tactical skills to excel internationally. The aim of the current study was to assess if a video-based decision-making test could discriminate different age-matched skill levels of talent in Australian soccer. Design Cross-sectional observational. Methods Sixty-two youth male soccer players completed a video-based decision-making test. Results An ANOVA test showed that the video-based test significantly discriminated between all three groups, with the national elite athletes selecting more correct responses than the state elite (65.3 ± 8.1%; 56.0 ± 9.1%, respectively). The state elite were more accurate than the sub-elite (45.9 ± 8.8%). Conclusions Results suggest that a video-based test may be a suitable tool to use in the selection of athletes as a measure of decision-making skill. The low accuracy scores, even for the national elite cohort, suggest that decision-making skill at the youth level has room for improvement and should be prioritised as an area for development.

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Lord, Cameron, Anthony J. Blazevich, Chris R. Abbiss, and Fadi Ma’ayah. "Reliability and Validity of Maximal Mean and Critical Speed and Metabolic Power in Australian Youth Soccer Players." Journal of Human Kinetics 73, no. 1 (July 21, 2020): 93–102. http://dx.doi.org/10.2478/hukin-2019-0135.

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AbstractThe reliability and validity of maximal mean speed (MMS), maximal mean metabolic power (MMPmet), critical speed (CS) and critical metabolic power (CPmet) were examined throughout the 2016-2017 soccer National Youth League competitions. Global positioning system (GPS) data were collected from 20 sub-elite soccer players during a battery of maximal running tests and four home matches. A symmetric moving average algorithm was applied to the instantaneous velocity data using specific time windows (1, 5, 10, 60, 300 and 600 s) and peak values were identified. Additionally, CS and CP¬met values calculated from match data were compared to CS and CPmet values determined from previously validated field tests to assess the validity of match values. Intra-class correlation (one-way random absolute agreement) scores ranged from 0.577 to 0.902 for speed, and from 0.701 to 0.863 for metabolic power values. Coefficients of variation (CV) ranged from good to moderate for speed (4-6%) and metabolic power (4-8%). Only CS and CPmet values were significantly correlated (r = 0.842; 0.700) and not statistically different (p = 0.066; 0.271) to values obtained in a shuttle-running critical test. While the present findings identified match-derived MMS, MMPmet, CS and CPmet to be reliable, only CS and CPmet derived from match play were validated to a CS field test that required changes in speed and direction rather than continuous running. This suggests that both maximal mean and critical speed and metabolic power analyses could be alternatives to absolute distance and speed in the assessment of match running performance during competitive matches.

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Schiff, Melissa A. "Soccer Injuries in Female Youth Players." Journal of Adolescent Health 40, no. 4 (April 2007): 369–71. http://dx.doi.org/10.1016/j.jadohealth.2006.10.012.

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Lee, Inje, Hee Seong Jeong, and Sae Yong Lee. "Injury Profiles in Korean Youth Soccer." International Journal of Environmental Research and Public Health 17, no. 14 (July 16, 2020): 5125. http://dx.doi.org/10.3390/ijerph17145125.

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We aimed to analyze injury profiles and injury severity in Korean youth soccer players. Data on all injuries that occurred in U-15 youth soccer players during the 2019 season were collected from 681 players of 22 teams through a medical questionnaire. The questionnaire was based on injury surveillance procedures of the Federation International de Football Association Medical and Research Centre and International Olympic Committee, and it comprised questions on demographic characteristics, training conditions, and injury information. Among all players, defenders accounted for 33.0%, followed by attackers (30.7%), midfielders (26.8%), and goalkeepers (7.9%). Most players played soccer on artificial grounds (97.4%). Injuries occurred more frequently during training (56.3%) than during matches (43.7%). Recurrent injury rate was 4.4% and average days to return to full activities were 22.58. The ankle (26.6%) and knee joints (14.1%) were the most common injury locations, and ligament sprains (21.0%), contusions (15.6%), and fractures (13.9%) were the most frequent injury types. In conclusion, Korean youth soccer players have a high injury risk. Therefore, researchers and coaching staff need to consider these results as a key to prevent injuries in youth soccer players and injury prevention programs may help decrease injury rate by providing injury management.

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Chrisman, Sara P., John W. O'Kane, Nayak L. Polissar, Allan F. Tencer, Christopher D. Mack, Marni R. Levy, and Melissa A. Schiff. "Strength and Jump Biomechanics of Elite and Recreational Female Youth Soccer Players." Journal of Athletic Training 47, no. 6 (November 1, 2012): 609–15. http://dx.doi.org/10.4085/1062-6050-47.6.01.

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Context Most researchers investigating soccer injuries have studied elite athletes because they have greater athletic-exposure hours than other athletes, but most youth participate at the recreational level. If risk factors for injury vary by soccer level, then recommendations generated using research with elite youth soccer players might not generalize to recreational players. Objective To examine injury risk factors of strength and jump biomechanics by soccer level in female youth athletes and to determine whether research recommendations based on elite youth athletes could be generalized to recreational players. Design Cross-sectional study. Setting Seattle Youth Soccer Association. Patients or Other Participants Female soccer players (N = 92) aged 11 to 14 years were recruited from 4 randomly selected elite (n = 50; age = 12.5 years, 95% confidence interval [95% CI]) = 12.3, 12.8 years; height = 157.8 cm, 95% CI = 155.2, 160.3 cm; mass = 49.9 kg, 95% CI = 47.3, 52.6 kg) and 4 randomly selected recreational (n = 42; age = 13.2 years, 95% CI = 13.0, 13.5 years; height = 161.1 cm, 95% CI = 159.2, 163.1 cm; mass = 50.6 kg, 95% CI = 48.3, 53.0 kg) soccer teams. Main Outcome Measure(s) Players completed a questionnaire about demographics, history of previous injury, and soccer experience. Physical therapists used dynamometry to measure hip strength (abduction, adduction, extension, flexion) and knee strength (flexion, extension) and Sportsmetrics to measure vertical jump height and jump biomechanics. We compared all measurements by soccer level using linear regression to adjust for age and mass. Results Elite players were similar to recreational players in all measures of hip and knee strength, vertical jump height, and normalized knee separation (a valgus estimate generated using Sportsmetrics). Conclusions Female elite youth players and recreational players had similar lower extremity strength and jump biomechanics. This suggests that recommendations generated from research with elite youth soccer players could be generalized to recreational players.

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Güllich, Arne, Robin Cronauer, Johannes Diehl, Luca Gard, and Christopher Miller. "Coach-assessed skill learning progress of youth soccer players correlates with earlier childhood practice in other sports." International Journal of Sports Science & Coaching 15, no. 3 (April 1, 2020): 285–96. http://dx.doi.org/10.1177/1747954120912351.

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The hypothesis that sport-specific skill learning is correlated with earlier childhood multi-sport practice experiences was empirically studied among youth soccer players. Fourteen youth soccer coaches (38.1 ± 12.0 years) evaluated 100 youth players (11.8 ± 0.7 years) regarding their progress in soccer-specific skill learning through the course of a one-year season. The players completed a questionnaire recording their earlier and current participation in coach-led practice and youth-led play in soccer and in other sports. Reliability of the coach rating and of players’ reported sport activities ranged 0.83 ≤ rtt ≤ 1.00. Analyses revealed that the progress of the youth players in soccer-specific skill learning was not significantly correlated with their earlier or current amounts of coach-led soccer practice (–0.07 ≤ rs ≤ 0.07), youth-led soccer play (0.01 ≤ rs ≤ 0.08), or youth-led play in other sports (0.13 ≤ rs ≤ 0.22). Progress in soccer-specific skill learning was significantly correlated with the accumulated years and hours of earlier (but not current) coach-led practice in other sports (0.54 ≤ rs ≤ 0.57). A binary logistic regression accurately classified 83% of players with better and poorer learning progress based on earlier years and hours of practice in other sports. The observations suggest that earlier practice experiences in other sports had a lagged effect in interaction with later soccer practice and facilitated skill learning in soccer-specific practice.

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Pfirrmann, Daniel, Mark Herbst, Patrick Ingelfinger, Perikles Simon, and Suzan Tug. "Analysis of Injury Incidences in Male Professional Adult and Elite Youth Soccer Players: A Systematic Review." Journal of Athletic Training 51, no. 5 (May 1, 2016): 410–24. http://dx.doi.org/10.4085/1062-6050-51.6.03.

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Context: The incidence of injury for elite youth and professional adult soccer players is an important concern, but the risk factors for these groups are different. Objective: To summarize and compare the injury incidences and injury characteristics of male professional adult and elite youth soccer players. Data Sources: We searched MEDLINE and Web of Science using the search terms elite, international, European, soccer, football, injury, injuries, epidemiology, incidence, prevalence, not female, not American football, and not rugby. We also used the search terms professional for studies on professional adult soccer players and high-level, soccer academy, youth, adolescent, and young for studies on elite youth soccer players. Study Selection: Eligible studies were published in English, had a prospective cohort design, and had a minimum study period of 6 months. To ensure that injury data were assessed in relationship to the athlete's individual exposure, we included only studies that reported on injuries and documented exposure volume. Data Extraction: Two independent reviewers applied the selection criteria and assessed the quality of the studies. Data Synthesis: A total of 676 studies were retrieved from the literature search. Eighteen articles met the inclusion criteria: 6 for elite youth and 12 for professional adult soccer players. Conclusions: Injury rates were higher for matches than for training for both youth and adult players. Youth players had a higher incidence of training injuries than professionals. Efforts must be made to reduce the overall injury rate in matches. Therefore, preventive interventions, such as adequately enforcing rules and focusing on fair play, must be analyzed and developed to reduce match-related injury incidences. Reducing training injuries should be a particular focus for youth soccer players.

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Wilson, P. M. "PREDICTING COGNITIVE ANXIETY IN YOUTH SOCCER PLAYERS." Medicine & Science in Sports & Exercise 31, Supplement (May 1999): S216. http://dx.doi.org/10.1097/00005768-199905001-01009.

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Salinas, Christine M., Frank M. Webbe, and Trent T. Devore. "The Epidemiology of Soccer Heading in Competitive Youth Players." Journal of Clinical Sport Psychology 3, no. 1 (March 2009): 15–33. http://dx.doi.org/10.1123/jcsp.3.1.15.

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We administered neurocognitive batteries to 49 youth soccer athletes (9–15 yr), who were selected from competitive soccer teams in Central Florida. We collected observational data on soccer heading, self-reported soccer heading, as well as demographics, including school, medical, and soccer history. Both the frequency and intensity of heading the ball in soccer was low in comparison with adolescents and adults. In our sample, the vast majority of soccer headings were of low to moderate intensity and direct (i.e., the incoming flight of the ball was perpendicular to the forehead). Age significantly correlated with frequent heading. Parents were reliable observers of their children’s soccer heading behavior and other at-risk behaviors during games. The majority of soccer headings were direct rather than flicks. Almost half of our participants reported headache and one-fourth reported dizziness after instances of heading the ball. Frequency of soccer heading was not related to neuropsychological score data.

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Fidelix, Yara Lucy, Juliane Berria, Elisa Pinheiro Ferrari, Jaelson Gonçalves Ortiz, Tiago Cetolin, and Edio Luiz Petroski. "Somatotype of Competitive Youth Soccer Players From Brazil." Journal of Human Kinetics 42, no. 1 (October 1, 2014): 259–66. http://dx.doi.org/10.2478/hukin-2014-0079.

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Abstract The aim of this study was to identify the morphological configuration of youth athletes from professional soccer clubs and to verify their differences according to the tactical position on the field. Overall, 67 male players aged 15 to 17 years were evaluated. The examined anthropometric measurements included body mass, body height, skinfolds (triceps, subscapular, supraspinal and medial calf), girths (flexed and tensed arm and calf) and breadths (humerus and femur). For statistical purposes, analysis of variance and post hoc Bonferroni and Kruskal-Wallis tests were used. We concluded that goalkeepers were heavier and taller than center backs (p = 0.015 and p = 0.001), midfielders (p = 0.005 and p <0.001) and center forward players (p = 0.024 and p <0.001). The average somatotype for defense, forward and goalkeeper positions was a balanced mesomorph. Midfield players showed ectomorphic-mesomorph characteristics. It was concluded that goalkeepers were characterized as being taller and heavier and that somatotype features of athletes were similar between positions, except for midfield players

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Costa, I., J. Garganta, P. Greco, I. Mesquita, B. Silva, E. Muller, D. Castelao, A. Rebelo, and A. Seabra. "Analysis of Tactical Performance of Youth Soccer Players." Open Sports Sciences Journal 3, no. 1 (March 7, 2014): 70–72. http://dx.doi.org/10.2174/1875399x010030100070.

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Zago, Matteo, Andrea Gianluca Piovan, Isabella Annoni, Daniela Ciprandi, F. Marcello Iaia, and Chiarella Sforza. "Dribbling determinants in sub-elite youth soccer players." Journal of Sports Sciences 34, no. 5 (June 11, 2015): 411–19. http://dx.doi.org/10.1080/02640414.2015.1057210.

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Gledhill, Adam, and Chris Harwood. "Developmental experiences of elite female youth soccer players." International Journal of Sport and Exercise Psychology 12, no. 2 (January 24, 2014): 150–65. http://dx.doi.org/10.1080/1612197x.2014.880259.

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Visscher, C., M. T. Elferink-Gemser, and K. A. P. M. Lemmink. "Interval Endurance Capacity of Talented Youth Soccer Players." Perceptual and Motor Skills 102, no. 1 (February 2006): 81–86. http://dx.doi.org/10.2466/pms.102.1.81-86.

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Read, Paul, Jon L. Oliver, Mark B. A. De Ste Croix, Gregory D. Myer, and Rhodri S. Lloyd. "Injury Risk Factors in Male Youth Soccer Players." Strength and Conditioning Journal 37, no. 5 (October 2015): 1–7. http://dx.doi.org/10.1519/ssc.0000000000000171.

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Hoff, Gerald L., and Theresa A. Martin. "Outdoor and indoor soccer: Injuries among youth players." American Journal of Sports Medicine 14, no. 3 (May 1986): 231–33. http://dx.doi.org/10.1177/036354658601400309.

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Lopez-Roman, Luis R., and Yarimar I. Diaz-Rodriguez. "Are Subconcussive Impacts Harmless in Youth Soccer Players?" Medicine & Science in Sports & Exercise 50, no. 5S (May 2018): 475. http://dx.doi.org/10.1249/01.mss.0000536644.03929.cd.

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Lopez-Roman, Luis R., and Yarimar I. Diaz-Rodriguez. "Are Subconcussive Impacts Harmless in Youth Soccer Players?" Medicine & Science in Sports & Exercise 50, no. 5S (May 2018): 495. http://dx.doi.org/10.1249/01.mss.0000536707.27280.c6.

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Wong, Del P., and Stephen HS Wong. "Physiological Profile of Asian Elite Youth Soccer Players." Journal of Strength and Conditioning Research 23, no. 5 (August 2009): 1383–90. http://dx.doi.org/10.1519/jsc.0b013e3181a4f074.

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Baláková, Veronika, Petr Boschek, and Lucie Skalíková. "Selected Cognitive Abilities in Elite Youth Soccer Players." Journal of Human Kinetics 49, no. 1 (December 1, 2015): 267–76. http://dx.doi.org/10.1515/hukin-2015-0129.

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Abstract The identification of talent in soccer is critical to various programs. Although many research findings have been presented, there have been only a few attempts to assess their validity. The aim of this study was to determine the relationship between talent and achievement variables in the Vienna Test System. The participants were 91 Czech soccer players, representing four youth soccer teams, who were born in the year 2000. These boys were divided into two groups according to their coaches’ assessments using a TALENT questionnaire. A two-factor model (component 1: “kinetic finesse”; component 2: “mental strength”) was designed to interpret the responses of the coaches on the questionnaire. The Vienna Test System was used to determine the level of players’ cognitive abilities. In total, the subjects performed seven tests in the following order: Raven’s Standard Progressive Matrices (SPM), a reaction test (RT), a determination test (DT), a visual pursuit test (LVT), a Corsi Block-Tapping Test (CORSI), a time/movement anticipation test (ZBA), and a peripheral perception test (PP). To analyze the relationship between talent and achievement variables within the Vienna Test System, correlation analyses were performed. The results revealed that the talented group attained significantly better results on only 1 of the 16 variables, which was ZBA2: movement anticipation - deviation of movement median (r = .217, p = .019). A comparison of the two talent components showed that component 1 (“kinetic finesse”) was a more significant factor than component 2 (“mental strength”). Although we observed statistically significant correlations, their actual significance remains questionable; thus, further research is required.

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Rebelo-Gonçalves, Ricardo, Manuel João Coelho-e-Silva, Vítor Severino, Antonio Tessitore, and António José Barata Figueiredo. "Anthropometric and Physiological Profiling of Youth Soccer Goalkeepers." International Journal of Sports Physiology and Performance 10, no. 2 (March 2015): 224–31. http://dx.doi.org/10.1123/ijspp.2014-0181.

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Studies focused on position-related characteristics of young soccer players often ignore the goalkeepers. The aim of this study was to examine the effect of playing position on anthropometry, physiological attributes, soccer skills, and goal orientation across adolescence. One hundred forty-five soccer players age 11–19 y were assessed in training experience, body size, maturation, physiological parameters, soccer skills, and goal orientation. Factorial ANOVA was used to test the effect of age group, playing position, and respective interaction terms, while analysis of variance was used to compare goalkeepers vs outfielders in middle (under 13 [U-13] and U-15) and late (U-17 and U-19) adolescence. Discriminant analysis was used to identify the variables that contributed to explaining playing positions. Age group was a consistent source of variation for all variables except task and ego orientations. Fat mass, agility, endurance, dribbling speed, shooting accuracy, and passing were affected by the gradient derived from the classification between goalkeepers and outfielders. It was possible to correctly classify the playing position based on fat-free mass and 3 manipulative skills in younger players and on 4 skills in U-17 and U-19 soccer players. Future research should include longitudinal information to improve our understanding of the factors that contribute to distinguish goalkeepers from outfielders.

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Munguia-Izquierdo, Diego, Luis Suarez-Arrones, Valter Di Salvo, Victor Paredes-Hernandez, Julian Alcazar, Ignacio Ara, Richard Kreider, and Alberto Mendez-Villanueva. "Validation of Field Methods to Assess Body Fat Percentage in Elite Youth Soccer Players." International Journal of Sports Medicine 39, no. 05 (March 21, 2018): 349–54. http://dx.doi.org/10.1055/s-0044-101145.

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AbstractThis study determined the most effective field method for quantifying body fat percentage in male elite youth soccer players and developed prediction equations based on anthropometric variables. Forty-four male elite-standard youth soccer players aged 16.3–18.0 years underwent body fat percentage assessments, including bioelectrical impedance analysis and the calculation of various skinfold-based prediction equations. Dual X-ray absorptiometry provided a criterion measure of body fat percentage. Correlation coefficients, bias, limits of agreement, and differences were used as validity measures, and regression analyses were used to develop soccer-specific prediction equations. The equations from Sarria et al. (1998) and Durnin & Rahaman (1967) reached very large correlations and the lowest biases, and they reached neither the practically worthwhile difference nor the substantial difference between methods. The new youth soccer-specific skinfold equation included a combination of triceps and supraspinale skinfolds. None of the practical methods compared in this study are adequate for estimating body fat percentage in male elite youth soccer players, except for the equations from Sarria et al. (1998) and Durnin & Rahaman (1967). The new youth soccer-specific equation calculated in this investigation is the only field method specifically developed and validated in elite male players, and it shows potentially good predictive power.

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Gioldasis, Aristotelis, Evangelos Bekris, and Ioannis Gissis. "Playing Position: Anthropometric and Fitness Demands in Youth Soccer." Sport Science Review 23, no. 3-4 (August 1, 2014): 151–68. http://dx.doi.org/10.2478/ssr-2014-0009.

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Abstract The aim of this study was to examine the anthropometric and fitness characteristics of soccer players with different positional role. Although, players’ skills are not equally distributed in each position, at elite soccer they have to perform each skill at a sufficient level. However, coaches expertise those from an early age in specific positions without giving them an holistic individualized training. In the study participated 312 Greek players aged 6 to 17 (M= 11.89; SD= 2.33) of 5 age groups (group U7-U8; group U9-U10; group U11-U12; group U13-U14; group U15-U16; group U17). Anthropometric (height, weight, body mass index and body fat) and fitness characteristics (flexibility, vertical jump, running speed, agility and VO2max) of participants were measured. The study showed that goalkeepers and central defenders tend to perform worse than players of the other positional groups in most of their fitness characteristics for almost all the age groups. Furthermore, many tendencies were observed in anthropometric and fitness characteristics between players with different positional roles. This study provides suggestions to coaches regarding their practice of positioning players according to their anthropometric and fitness characteristics for a short term success.

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Joksimović, Aleksandar, Daniel Stanković, Dragan Ilić, Ivana Joksimović, and Milorad Jerkan. "Hematological Profile of Serbian Youth National Soccer Teams." Journal of Human Kinetics 22, no. 1 (January 1, 2009): 51–59. http://dx.doi.org/10.2478/v10078-009-0023-4.

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Hematological Profile of Serbian Youth National Soccer TeamsSoccer is one of the most widely played and complex sports in the world, where players need technical, tactical, and physical skills to succeed. Technical and tactical skills in soccer are highly dependent on the player's physical capacity. The selection, development and professional guidance of young players is a priority for many top soccer clubs in order to maintain their sporting and financial status. The aim of the present study was to determine hematological profile of youth national soccer teams and to compare the values of fifteen hematological parameters between 3 Serbian youth national teams (under 14, 15 and 16 years old), as well as between soccer players and nonathletes. 80 young soccer players and 30 non-athletes participated in the study. 15 hematologic parameters (WBC, RBC, HGB, HCT, PLT, MCV, MCH, MCHC, PDW, LYM%, MON%, GRAN%, LYM, MON, GRAN) were measured. In order to determine the significance of differences between the groups on a multivariate level a multivariate analysis of variance (MANOVA) was administered, and to test the differences between the groups on an univariate level a univariate analysis of variance (ANOVA) was applied. It was concluded that there is no significant difference in all the variables (WBC, Ly, Mo, Gr, PLT, HGB, HCT, etc), except RBC, probably due to age, androgen affection on erythropoesis, field positoning and diet. From a practical point of view, the clinician has to take into account not only age, but also training status of individuals when evaluating their blood tests.

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Mitchell, Tom, Adam Gledhill, Mark Nesti, Dave Richardson, and Martin Littlewood. "Practitioner Perspectives on the Barriers Associated With Youth-to-Senior Transition in Elite Youth Soccer Academy Players." International Sport Coaching Journal 7, no. 3 (September 1, 2020): 273–82. http://dx.doi.org/10.1123/iscj.2019-0015.

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There are concerns surrounding the lack of players making the transition from youth to professional status within English professional soccer. Stakeholders, such as coaches, have been largely overlooked by researchers often focussing on player experiences. The authors aimed to explore soccer practitioner perceptions of the debilitating factors associated with youth-to-senior progression. Practitioners were chosen as they inform the working practices and are the cultural architects of the environment in which players operate. Interviews were conducted with 18 soccer practitioners (male = 17 and female = 1). These included coaches (n = 6), academy managers (n = 8), and staff involved with education and welfare (n = 4). The data were thematically analysed, and four themes were identified (cultural climate, working practices, occupational hazards, and social challenges). The analysis provided a clear picture of the transition landscape faced by players seeking to make the youth-to-senior transition through the eyes of soccer practitioners. The findings present a novel viewpoint to facilitate reflection around their own practice when managing youth-to-senior transitions. Further research is needed to triangulate player experiences and operational aspects of facilitating transitions, which could lead to the creation of best practice guidance.

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Ambe, Hisataka, Koji Murase, Masaru Ochiai, Misaki Iteya, and Naoki Suzuki. "The Effect of Coach Feedback on Soccer Competence in Youth Soccer Players." Taiikugaku kenkyu (Japan Journal of Physical Education, Health and Sport Sciences) 63, no. 1 (June 10, 2018): 87–102. http://dx.doi.org/10.5432/jjpehss.17025.

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McMillan, K. "Physiological adaptations to soccer specific endurance training in professional youth soccer players." British Journal of Sports Medicine 39, no. 5 (May 1, 2005): 273–77. http://dx.doi.org/10.1136/bjsm.2004.012526.

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De Ridder, Roel, Erik Witvrouw, Mieke Dolphens, Philip Roosen, and Ans Van Ginckel. "Hip Strength as an Intrinsic Risk Factor for Lateral Ankle Sprains in Youth Soccer Players: A 3-Season Prospective Study." American Journal of Sports Medicine 45, no. 2 (November 19, 2016): 410–16. http://dx.doi.org/10.1177/0363546516672650.

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Background: Numerous epidemiological studies have emphasized the burden of lateral ankle sprains in youth soccer players. However, no prospective study has identified intrinsic physical and modifiable risk factors for these injuries in this particular population. Although injury prevention programs in soccer incorporate proximal hip and core stability exercises, it is striking that the relationship between impaired proximal hip function and ankle sprains has not yet been prospectively investigated in youth soccer players. Hypothesis: This prospective study aimed to examine whether hip muscle strength is a risk factor for sustaining a lateral ankle sprain in youth soccer players. We hypothesized that decreased hip muscle strength would predispose youth soccer players to an increased risk of lateral ankle sprains. Study Design: Case-control study; Level of evidence, 3. Methods: This study included a total of 133 male youth soccer players (age divisions U11-U17) for analysis. At the beginning of the season, anthropometric characteristics were collected and hip muscle strength was assessed using a handheld dynamometer. Injury registration was performed by the team medical staff during 3 consecutive seasons. A principal-component, multivariate Cox regression analysis was performed to identify potential risk factors for sustaining a lateral ankle sprain. Results: Twelve participants (18% of all reported injuries) sustained a lateral ankle sprain (0.36 per 1000 athletic-exposure hours). After adjustment for body size dependencies and other hip muscle forces, an increase in hip muscle extension force was associated with a significant decrease in the hazard of the injury (hazard ratio, 0.3; 95% confidence interval, 0.1-0.9; P = .028). No other study variable could be identified as a risk factor for lateral ankle sprains. Conclusion: Reduced hip extension muscle strength is an independent risk factor for lateral ankle sprains in male youth soccer players. Other hip muscle strength outcomes were not identified as risk factors. Replication in larger samples with more injured cases is warranted to further ascertain the importance of this risk factor.

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Salvatore, Anthony, and Yarimar Díaz-Rodríguez. "Impact of Sports-Related Subconcussive Injuries in Soccer Players." Seminars in Speech and Language 40, no. 01 (January 7, 2019): 057–64. http://dx.doi.org/10.1055/s-0038-1676365.

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AbstractSports-related subconcussive impacts to the head are receiving increased interest. Recent evidence indicates that subconcussive impacts will have greater relevance across time because of the number of repetitive impacts. Soccer players are at risk of receiving at least one impact during a soccer game. The authors review the cognitive-communication functioning following subconcussive head injuries in youth and recommendations for baseline assessments and cognitive-communication dysfunctions after subconcussive impacts in youth. The review is followed by a description and discussion of a study that assessed the cognitive-communicative dysfunction in young soccer players prior to and following a series of soccer matches and recommendations for monitoring recovery of cognitive-communication.

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Salci, Yasar. "Landing Error Scoring System for Screening Risk Scores among Elite-Youth Soccer Players." Journal of Educational Issues 7, no. 1 (May 14, 2021): 351. http://dx.doi.org/10.5296/jei.v7i1.18485.

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Identifying the risk of anterior cruciate ligament injury is very important for the careers of elite players. When identifying risk factors, effective, easy, valid, reliable methods applicable to a large number of participants should be used. The purpose of this study was to compare the landing pattern of elite-youth soccer players using the landing error scoring system (LESS) which is a valid and reliable qualitative screening method. 95 volunteer elite-youth soccer players (U19, U17, U16 & U15) between the ages of 14 and 18 participated in this study. Jump-landings were recorded by two camcorders from sagittal and frontal planes. These records were replayed and scored by a trained rater on LESS score sheets. There were statistically significant differences in LESS scores among the soccer age groups (p = 0.00). Post-hoc analysis demonstrated significant differences between U19 and U17 (p = 0.00), U17 and U15 (p = 0.00) and U16 and U15 (p = 0.01) soccer players. The best LESS score was found in U17 players and U15 players had the weakest score. The higher LESS score of the U15 players may be related to the neuromuscular control ability however, more evidence is needed to confirm the potential influence of age categories on LESS scores.

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Smith, Esmie P., Andrew P. Hill, and Howard K. Hall. "Perfectionism, Burnout, and Depression in Youth Soccer Players: A Longitudinal Study." Journal of Clinical Sport Psychology 12, no. 2 (June 1, 2018): 179–200. http://dx.doi.org/10.1123/jcsp.2017-0015.

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The relationship between perfectionism, burnout and depression among youth soccer players is of interest due to the competitive academy environments that must be navigated in order to become a professional soccer player. Three alternative theoretical models have been proposed to explain the relationship between perfectionism, burnout and depression. These models state that perfectionism is (a) a vulnerability factor for burnout and depression (vulnerability model), (b) a consequence of burnout and depression (complication/scar model), or (c) that the relationships are reciprocal (reciprocal relations model). The purpose of this study was to test these three models in youth soccer players. One hundred and eight male soccer players (M = 16.15 years, SD = 1.84) from professional clubs completed measures of perfectionism, burnout symptoms, and depressive symptoms twice, three months apart. Cross-lagged panel analysis provided support for a reciprocal relations model for burnout symptoms and a complication/scar model for depressive symptoms.

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Peñailillo, Luis, Francisco Espíldora, Sebastián Jannas-Vela, Iñigo Mujika, and Hermann Zbinden-Foncea. "Muscle Strength and Speed Performance in Youth Soccer Players." Journal of Human Kinetics 50, no. 1 (April 1, 2016): 203–10. http://dx.doi.org/10.1515/hukin-2015-0157.

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AbstractThis study aimed to examine the relationship between maximum leg extension strength and sprinting performance in youth elite male soccer players. Sixty-three youth players (12.5 ± 1.3 years) performed 5 m, flying 15 m and 20 m sprint tests and a zigzag agility test on a grass field using timing gates. Two days later, subjects performed a one-repetition maximum leg extension test (79.3 ± 26.9 kg). Weak to strong correlations were found between leg extension strength and the time to perform 5 m (r = -0.39, p = 0.001), flying 15 m (r = -0.72, p < 0.001) and 20 m (r = -0.67, p < 0.001) sprints; between body mass and 5 m (r = -0.43, p < 0.001), flying 15 m (r = -0.75, p < 0.001), 20 m (r = -0.65, p < 0.001) sprints and agility (r =-0.29, p < 0.001); and between height and 5 m (r = -0.33, p < 0.01) and flying 15 m (r = -0.74, p < 0.001) sprints. Our results show that leg muscle strength and anthropometric variables strongly correlate with sprinting ability. This suggests that anthropometric characteristics should be considered to compare among youth players, and that youth players should undergo strength training to improve running speed.

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Jordan, J. Bradley, Ajit Korgaokar, Richard S. Farley, John M. Coons, and Jennifer L. Caputo. "Caffeine Supplementation and Reactive Agility in Elite Youth Soccer Players." Pediatric Exercise Science 26, no. 2 (May 2014): 168–76. http://dx.doi.org/10.1123/pes.2013-0134.

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This study examined the effects of caffeine supplementation (6 mg·kg−1) on performance of a reactive agility test (RAT) in 17 elite, male, youth (M = 14 y) soccer players. Using a double-blind, repeated-measures design, players completed 4 days of testing on the RAT after a standardized warm-up. On day 1, anthropometric measurements were taken and players were accommodated to the RAT. On day 2, baseline performance was established. Caffeine or placebo conditions were randomly assigned on day 3 and the condition was reversed on day 4. Players completed 3 randomized trials of the RAT on days 2, 3, and 4 with at least 1 trial to the players’ dominant and nondominant sides. There were no significant differences among conditions in reaction time (RT) to the dominant side, heart rates at any point of measurement, or ratings of perceived exertion (RPE) after completion of the warm-up. Caffeine produced faster RT to the nondominant side (P = .041) and higher RPE at the conclusion of the RAT (P = .013). The effect on the total time (TT) to complete the agility test to the nondominant side approached significance (P = .051). Sprint time and TT to either side did not differ. Caffeine supplementation may provide ergogenic benefit to elite, male, youth soccer players.

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Junge, Astrid, Dieter Rösch, Lars Peterson, Toni Graf-Baumann, and Jiri Dvorak. "Prevention of Soccer Injuries: A Prospective Intervention Study in Youth Amateur Players." American Journal of Sports Medicine 30, no. 5 (September 2002): 652–59. http://dx.doi.org/10.1177/03635465020300050401.

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Background: Risk factors for soccer injuries and possibilities for prevention have been discussed by several authors, but only a few have investigated the effectiveness of preventive interventions. Purpose: The aim of the present study was to evaluate the effects of a prevention program on the incidence of soccer injuries in male youth amateur players. Study Design: Prospective controlled intervention study. Methods: Seven soccer teams took part in a prevention program that focused on education and supervision of coaches and players, while seven other teams were instructed to train and play soccer as usual. Over 1 year all injuries were documented weekly by physicians. Complete weekly injury reports were available for 194 players. Results: The incidence of injury per 1000 hours of training and playing soccer was 6.7 in the intervention group and 8.5 in the control group, which equates to 21% fewer injuries in the intervention group. The greatest effects were observed for mild injuries, overuse injuries, and injuries incurred during training. The prevention program had greater effects in low-skill than in high-skill teams. Conclusions: The incidence of soccer injuries can be reduced by preventive interventions, especially in low skill level youth teams. Coaches and players need better education regarding injury prevention strategies and should include such interventions as part of their regular training.

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Joo, Chang-Hwa. "Analysis of Match Performance in Elite Youth Soccer Players." Korea Journal of Sport 18, no. 4 (December 31, 2020): 981–88. http://dx.doi.org/10.46669/kss.2020.18.4.088.

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Hopper, Chris, Gerald D. Guthrie, and Tim Kelly. "Self-Concept and Skill Development in Youth Soccer Players." Perceptual and Motor Skills 72, no. 1 (February 1991): 275–85. http://dx.doi.org/10.2466/pms.1991.72.1.275.

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Haag, Thore-Björn, H. Michael Mayer, Alexandra S. Schneider, Michael C. Rumpf, Martin Handel, and Christian Schneider. "Risk assessment of back pain in youth soccer players." Research in Sports Medicine 24, no. 4 (August 18, 2016): 395–406. http://dx.doi.org/10.1080/15438627.2016.1222275.

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Li, Li, Jia Han, Gordon Waddington, and Roger Adams. "Ankle Proprioception And Soccer Skills in Youth Recreational Players." Medicine & Science in Sports & Exercise 49, no. 5S (May 2017): 1029–30. http://dx.doi.org/10.1249/01.mss.0000519826.17330.62.

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Malina, Robert M. "Maturity Status and Injury Risk in Youth Soccer Players." Clinical Journal of Sport Medicine 20, no. 2 (March 2010): 132. http://dx.doi.org/10.1097/01.jsm.0000369404.77182.60.

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Le Gall, Franck, Christopher Carling, Thomas Reilly, Henry Vandewalle, Julia Church, and Pierre Rochcongar. "Incidence of Injuries in Elite French Youth Soccer Players." American Journal of Sports Medicine 34, no. 6 (June 2006): 928–38. http://dx.doi.org/10.1177/0363546505283271.

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Johnson, Adam C., Mark A. Shaman, and Thomas G. Ryan. "Femoroacetabular Impingement in Former High-Level Youth Soccer Players." American Journal of Sports Medicine 40, no. 6 (March 22, 2012): 1342–46. http://dx.doi.org/10.1177/0363546512439287.

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Malina, Robert M., António J. Figueiredo, and Manuel J. Coelho-e-Silva. "Body Size of Male Youth Soccer Players: 1978–2015." Sports Medicine 47, no. 10 (May 18, 2017): 1983–92. http://dx.doi.org/10.1007/s40279-017-0743-x.

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46

Joo, Chang-Hwa. "Analysis of Match Performance in Elite Youth Soccer Players." Korea Journal of Sport 18, no. 4 (December 31, 2020): 981–88. http://dx.doi.org/10.46669/kss.2020.18.4.088.

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Jalal, Nadhim Jabbar. "Mechanical Energy and Its Relationship with Some Kinematical Variables and Scoring Accuracy Indicator in Youth Soccer Players." Journal of Physical Education 32, no. 3 (September 28, 2020): 131–40. http://dx.doi.org/10.37359/jope.v32(3)2020.1029.

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The research aimed at identifying the mechanical, motor, and potential energy values as well as for kinematical variables, scoring accuracy indicator values in youth soccer players. In addition to that, the research aimed at identifying the relationship between the mechanical, motor, and potential energy values, kinematical variables, scoring accuracy indicator values in youth soccer players. The researcher used the descriptive method on (7) youth players from Newroz youth soccer club. He used (2) specialized video cameras for analyses and programing using Kinovea. He also conducted scoring accuracy to collect the data that was treated using SPSS. Five views were used from a total of six makings (35) for analyzing mechanical variables and scoring accuracy to conclude a relationship between mechanical, motor, and potential energy with many variables. Finally, he recommended that coaches should pay attention to mechanical and motion energy for their direct relationship with working muscle group development.

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Spehnjak, Marijan, Marko Gušić, Slavko Molnar, Mario Baić, Slobodan Andrašić, Musa Selimi, Draženka Mačak, et al. "Body Composition in Elite Soccer Players from Youth to Senior Squad." International Journal of Environmental Research and Public Health 18, no. 9 (May 7, 2021): 4982. http://dx.doi.org/10.3390/ijerph18094982.

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There is a strong relationship between body composition and performance in male soccer players. This study aimed to display an optimal body height and weight, and body composition profile of male soccer players for four competitive age groups. This cross-sectional study included four groups: U-15 (n = 152), U-17 (n = 154), U-19 (n = 61), and seniors (n = 27). Body height and weight were measured under standard conditions, and the bioelectrical impedance analyzer (BIA) analyzed body composition. On average, soccer players in the U-15 group had significantly lower body height, weight, body mass index, skeletal muscle mass, fat-free mass, total body water and basal metabolic rate than U-17, U-19 and seniors, but a higher percentage of body fat than U-17 and U-19, p < 0.05. In addition, the results show significant non-linear increases in body height, weight and body composition as the age of soccer players increases, with the exception of the percentage of body fat mass, which tends to significantly decrease with age. The main findings of this study are that body fat mass remains stable and similar across all age groups, including in the senior squad.

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Isla, Elena, Blanca Romero-Moraleda, José María Moya, Francisco Esparza-Ros, and Javier Mallo. "Effects of a Neuromuscular Warm-Up Program in Youth Female Soccer Players." Journal of Human Kinetics 79, no. 1 (July 10, 2021): 29–40. http://dx.doi.org/10.2478/hukin-2021-0080.

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Abstract The protective effects of different warm-up injury prevention routines in youth female soccer players have been demonstrated in the literature, however, there is a paucity of information regarding the effects that these kinds of programs have on soccer-specific physical performance variables. The purpose of this study was to assess the effectiveness of a 12-week neuromuscular warm-up program on physical performance in youth female soccer players. Players (age: 13.94 ± 0.82 years) were divided into two groups. One group performed a neuromuscular activation program (n = 21) twice per week whereas the other group (control, n = 17) continued with their habitual warm-up routine for the same duration. Both groups of players performed strength, jumping and balance tests before and after the intervention period. Substantially greater improvements were detected in the mean velocity for the squat (p < 0.001; Effect Size = 0.95) and the hip thrust (p < 0.001; Effect Size = 0.51) in the experimental group in comparison to the control group. In addition, after the intervention period players in the experimental group showed an increase in the jumping height in the unloaded double-leg and single-leg counter-movement jumps (p = 0.003-0.012; Effect Size = 0.42-0.46). The results of this study provide evidence that a 12-week neuromuscular warm-up program can be effective to improve different physical performance variables in youth female soccer players.

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Souza, Jullian Josnei de, Juliana Squizatto Leite, Ricardo Bahls, Rodrigo Stanislawczuk Grande, and Fabio André Santos. "Clinical and behavioral conditions in oral health of volleyball and soccer athletes." Brazilian Journal of Oral Sciences 20 (February 10, 2021): e213400. http://dx.doi.org/10.20396/bjos.v20i00.8663400.

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Aim: In this cross-sectional study, we evaluated the oral hygiene habits, oral health conditions, and the perception about the influence of oral health conditions on the physical performance of youth and professional volleyball and soccer athletes. Methods: A total of 96 male athletes participated: 48 volleyball players (25 youth and 23 professional players); and 48 soccer players, of whom 22 were youth, and 26 were professional players. We analyzed the oral hygiene and oral health condition (daily toothbrush, flossing, mouthwash, dental plaque, orthodontic treatment, dental/facial trauma, temporomandibular dysfunction, malocclusion, and the athletes’ perception about the influence of oral health conditions on the physical performance (yes or no)). Comparisons were made between the youth and professional athletes for each sport (volleyball and soccer). According to each variable, we applied the Chi-square, Fisher’s Exact, and Mann-Whitney tests. Results: For soccer athletes, we found significant differences between youth and professionals for: flossing (p=0.014), orthodontic treatment (p=0.028), dental/facial trauma (p=0.041), and the athletes’ perception about oral health and physical performance (p<0.001). Considering the category (youth and professional) regardless of the type of sport, we found significant differences for dental plaque (p=0.024) and dental/facial trauma (p=0.005). According to the sport (volleyball and soccer), independent of the category, we found significant differences for daily brushing, dental/facial trauma (p=0.005), and the athletes’ perception about oral health and physical performance (p=0.006). Conclusion: We concluded that the surveyed athletes had good oral health and believed that oral health can influence sports performance.

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Journal articles on the topic 'Australian youth soccer players'

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