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

Abstract

-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

Talent selection in youth football: Technical skills rather than general motor performance predict future player status of football talents

“…Apart from its prognostic validity, the higher reliability (r tt = .79) compared to other SMP tests in the current study (.31 ≤ r tt ≤ .68), and the substantial factor loading on the latent dimension technical skills, may be hints for the high value of juggling (Höner et al, 2015). Earlier results on its independence from biological maturation are confirmed in the current study, albeit this is also true for the other three SMP tests (Figueiredo, Goncalves, Silva, & Malina, 2009b;Matta, Figueiredo, Garcia, & Seabra, 2014). Following these results, the use of juggling tests within talent selection in youth football is highly recommended.…”

Body Composition in Elite Soccer Players from Youth to Senior Squad

“…It has been revealed that the mean body height, body weight, body mass index, skeletal muscle mass, percentage of body fat mass, fat-free mass, total body water and basal metabolic rate of the U-15 soccer players was significantly lower than in the remaining groups of soccer players, U-17, U-19, and seniors. The larger body size for U-17 compared to U-15 soccer players was also confirmed by Da Silva et al's, and Matta et al's research [16,18]. Lower total body water and basal metabolic rate in the younger competitive age-related category were also previously found in [19].…”

“…Small body composition differences between the aforementioned competitive age-related soccer categories may have not been significant. Meanwhile, in the U-15 group, the impact of biological development is the greatest compared to the remaining competitive age ranks [18], which could have influenced inconsistent, non-linear changes in morphological characteristics across agerelated soccer groups. In addition, the possible reason for failure to differentiate seniors' body composition from the body composition of U-17 and U-19 could be the smaller sample size and wider age range of senior soccer players relative to the U-17 and U-19 groups.…”

The Yo-Yo Intermittent Tests: A Systematic Review and Structured Compendium of Test Results

“…Computation of YYIE2 test global means, SDs and quantiles (Figure 4) included 48 studies/subgroups and 1,466 participants (median age = 23.0 years, IQR = 18.3–26.0 years) (Aziz et al, 2005; Rampinini et al, 2007; Bangsbo et al, 2010; Brito et al, 2010; Krustrup et al, 2010a,b,c, 2015; Randers et al, 2010, 2013; Ascensão et al, 2011; Bradley et al, 2011, 2013, 2014; Rebelo et al, 2011, 2013; Silva et al, 2011, 2013; Gibson et al, 2013; Dixon, 2014; Massuça et al, 2014; Massuca et al, 2015; Matta et al, 2014; Póvoas et al, 2014; Kvorning et al, 2017). …”