Sixto González-Víllora

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Relative age effect (RAE) describes the long-lived performance effects associated with systematic age differences of athletes in sports where competition is organized according to age cohorts. This phenomenon has been studied in many different sports, across widely varying samples and other factors such as anthropometric and fitness characteristics, career(More)
This study tested the use of two pedagogical principles of Game-based approaches, representation and exaggeration, in the context of game performance of U10 soccer players. Twenty-one players participated in two 3 vs. 3 small-sided games. The first small-sided game was modified by representation. The second small-sided game was modified by enhancing the(More)
Relative Age Effect (RAE) is the breakdown by both age grouping and dates of birth of athletes. In the past 20 years the existence of this effect has been shown with higher or smaller impact in multiple sports, including soccer. The purpose of this study was to identify the existence of RAE in European soccer players. The sample included 841 elite soccer(More)
For sports assessment to be comprehensive, it must address all variables of sports development, such as psychological, social-emotional, physical and physiological, technical and tactical. Tactical assessment has been a neglected variable until the 1980s or 1990s. In the last two decades (1995-2015), the evolution of tactical assessment has grown(More)
González-Víllora S, García-López LM, Gutiérrez-Díaz D, Pastor-Vicedo JC. Tactical awareness, decision making and skill In youth soccer players (under-14 years). J. Hum. Sport Exerc. Vol.8, No. 2, pp. 412-426, 2013. The purpose of this study is to assess the technical-tactical knowledge of high performance soccer players. The sport performance of sixteen(More)
Most studies on the identification and development of soccer talent have been one-dimensional in nature. Although some multi-dimensional analyses have been conducted, few research studies have assessed in any depth the socio-spatial factors influencing talent development. The aim of this particular study was to analyse variations in the international(More)
García-López LM, Gutiérrez D, Abellán J, González-Víllora S, Webb LA. Expert-novice differences in procedural knowledge in young soccer players from local to international level. J. Hum. Sport Exerc. Vol. 5, No. 3, pp. 444-452, 2010. Expert and novice soccer players (N=140) from five different competition levels (inexperienced, provincial, regional,(More)
Grouping people according to chronological age is popular in fields such as education and sport. Athletes who are born in the first months of the year usually have cognitive and physical development differences in contrast to those born in the last months of the same year. That is why competitive teams tend to select older players more often than(More)
At the last World Conference on Sport and Physical Therapy celebrated in Bern (Switzerland, 2015), it was confirmed that the functional skills of an athlete are a very important variable to be considered in the recovery of an injury. On the other hand, its use as a predictive risk tool still lacks solid evidence. The purpose of this study was to determine(More)