Physiological Profile of Asian Elite Youth Soccer Players

Wong, Del P.; Wong, Seng Kai

doi:10.1519/jsc.0b013e3181a4f074

Cited by 46 publications

(24 citation statements)

References 23 publications

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“…With respect to stature of under-17 soccer players (170.9 cm), taller statures have been reported by Silva et al 23 in a review of Brazilian soccer players and in studies involving samples from Europe 7 and Asia 24 . The body mass of the under-15 soccer players was similar to that reported for Portugues 21 , French 22 , and Belgian 7 soccer players.…”

Section: Discussionmentioning

confidence: 73%

Perfil morfológico, maturacional, funcional e técnico de jovens futebolistas Brasileiro

Matta

Figueiredo

Garcia

et al. 2014

Rev. Bras. Cineantropom. Desempenho Hum.

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-The objectives of this study were to describe and compare the anthropometric profile, physical fitness and soccer-specific skills between under-15 and under-17 Brazilian soccer players, as well as to evaluate possible differences in these variables according to biological maturation in the age categories. The sample consisted of 245 male soccer players (under-15: n=161; under-17: n=84). Anthropometric measures included weight, height and skinfolds. Biological maturation was assessed based on pubic hair development. The following tests were used for functional assessment: static and countermovement jump, Yo-Yo intermittent endurance test (level 2), RAST, 5-and 30-meter running speed, and agility T-test. Soccer-specific skills were assessed using three tests: ball control, dribbling, and kick accuracy. Descriptive statistics, t-test and analysis of variance (ANOVA) were used for statistical analysis. The results showed a larger body size (stature and body mass), longer sports experience (years of formal training) and better performance in most of the functional tests for under-17 soccer players compared to under-15 players. There were no significant differences in adiposity or soccer-specific skills between levels of competition. Significant differences as a function of maturation stage were observed in anthropometric and functional variables only in the under-15 category. In conclusion, the under-17 category differs from the under-15 category in terms of anthropometric and physical fitness characteristics. However, no difference was observed in two of the three soccer-specific skills. Physical fitness components and soccer-specific skills were associated with maturity only in the under-15 category. Key words: Anthropometry; Functional capacity; Specific motor skills; Maturation; Soccer. (sub-15, n=161; sub-17, n=84 Resumo -Foram objetivos deste estudo caracterizar e comparar o perfil antropométrico, funcional e das habilidades motoras específicas (HME) de jovens futebolistas Brasileiros brasileiros sub-15 e sub-17, assim como verificar possíveis diferenças nas variáveis referenciadas em função da maturação biológica nas categorias etárias. O efetivo da amostra foi constituído por 245 futebolistas do sexo masculino

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Section: Discussionmentioning

confidence: 73%

Perfil morfológico, maturacional, funcional e técnico de jovens futebolistas Brasileiro

Matta

Figueiredo

Garcia

et al. 2014

Rev. Bras. Cineantropom. Desempenho Hum.

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“…A similar time (1.09 ± 0.07 s) was also reported (Alves et al, 2010) in youth elite Portuguese players (n = 9, age = 17.4 ± 0.06 years). Superior results (1.07 ± 0.05 s) were reported by Wong and Wong (2009) in youth Chinese national team players (n = 16, age = 16.2 ± 0.06 years) and in elite 16-year-old English soccer players (1.04 ± 0.03 s) (Reilly et al, 2000b). …”

Section: Discussionmentioning

confidence: 76%

Profile, Correlation and Structure of Speed in Youth Elite Soccer Players

Malý

Zahálka

Malá

et al. 2014

Journal of Human Kinetics

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Speed, power and agility are important components of fitness and determine the level of success and performance in soccer. The aim of this study was to identify speed variables and to determine their mutual correlation and structure in youth elite soccer players. The research group consisted of players from the Czech U16 national team (n = 22, age = 15.6 ± 0.4 years). Speed variables were assessed using the following tests: a) linear speed: 5 m sprint (S5), 10 m sprint (S10) and 20 m flying sprint (F20); b) the agility: agility test 505 with turning on the dominant (A505D) and non-dominant legs (A505N) and the K-test (K) and c) ball velocity after an instep kick with the dominant (IKD) and non-dominant (IKN) legs. Significant dependence was found for S5 compared with S10, F20 vs. A505N, K vs. A505N (p < 0.01) and S10 vs. F20 (p < 0.05). The factor analysis revealed three components of the latent variable – speed. The first component consisted of linear sprint (S10, S20) and also partially consisted of maximum speed (F20). The second component was primarily composed of agility (A505D, A505N, K) and also included maximum speed (F20). The third independent component represented ball velocity after an instep kick (IKD, IKN). The speed variables in youth elite players exhibited significant heterogeneity from the perspective of performance, as determined by the monitored tests. The structure of the speed predisposition indicated that there were three components of speed. The results of our studies support the notion that each component of speed must be considered independently when designing training programmes.

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“…Among these, hamstrings-to-quadriceps peak torque ratio (H:Q ratio) is one of the most commonly evaluated. This ratio of strength of agonist to antagonist knee muscles has been used to examine the functional ability, knee joint stability and muscle balance between hamstrings and quadriceps during velocity dependent movements (Aagaard et al, 1995; Clanton and Coupe, 1998; Hewett et al, 1996; 1999; Li et al, 1996; Orchard et al, 1997; Wong and Wong, 2009). Injury may occur during a rapid knee extension if the hamstrings fail to generate effective eccentric counteraction to decelerate the movement (Croisier et al, 2008).…”

Section: Introductionmentioning

confidence: 99%

H:Q Ratios and Bilateral Leg Strength in College Field and Court Sports Players

Cheung

Smith

Wong

2012

Journal of Human Kinetics

100

119

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One of the key components in sports injury prevention is the identification of imbalances in leg muscle strength. However, different leg muscle characteristics may occur in large playing area (field) sports and small playing area (court) sports, which should be considered in regular injury prevention assessment. This study examined the isokinetic hamstrings-to-quadriceps (H:Q) ratio and bilateral leg strength balance in 40 male college (age: 23.4 ± 2.5 yrs) team sport players (field sport = 23, soccer players; court sport = 17, volleyball and basketball players). Five repetitions of maximal knee concentric flexion and concentric extension were performed on an isokinetic dynamometer at two speeds (slow: 60°·s−1 and fast: 300°·s−1) with 3 minutes rest between tests. Both legs were measured in counterbalanced order with the dominant leg being determined as the leg used to kick a ball. The highest concentric peak torque values (Nm) of the hamstrings and quadriceps of each leg were analyzed after body mass normalization (Nm·kg−1). Court sport players showed significantly weaker dominant leg hamstrings muscles at both contraction speeds (P < 0.05). The H:Q ratio was significantly larger in field players in their dominant leg at 60°·s−1 (P < 0.001), and their non-dominant leg at 300°·s−1 (P < 0.001) respectively. Sport-specific leg muscle strength was evident in college players from field and court sports. These results suggest the need for different muscle strength training and rehabilitation protocols for college players according to the musculature requirements in their respective sports.

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Physiological Profile of Asian Elite Youth Soccer Players

Cited by 46 publications

References 23 publications

Perfil morfológico, maturacional, funcional e técnico de jovens futebolistas Brasileiro

Perfil morfológico, maturacional, funcional e técnico de jovens futebolistas Brasileiro

Profile, Correlation and Structure of Speed in Youth Elite Soccer Players

H:Q Ratios and Bilateral Leg Strength in College Field and Court Sports Players

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