The fundamental tactical principles of the game of soccer represent a set of action rules that guide behaviours related to the management of game space. The aim of this study was to compare the performance of fundamental offensive and defensive tactical principles among youth soccer players from 12 to 17 years old. The sample consisted of 3689 tactical actions performed by 48 soccer players in ...

A recent set of studies has investigated the selective effects of particular physical activities that require full-body rotations, such as gymnastics and wrestling (Moreau, Clerc, Mansy-Dannay, & Guerrien, 2012; Steggemann, Engbert, & Weigelt, 2011), and demonstrated that practicing these activities imparts a clear advantage in in-plane body rotation performance. Other athletes, such as handbal...

Plyometric training (PT) is a widely used method to improve muscles' ability to generate explosive power. Plyometric may improved skill performance of soccer players; however it is not clear. The aim of this study was to investigate the effect of PT on skill performance in soccer players. Twenty soccer players participated in this study as the subject. The subjects were randomly assigned to PT ...

Recently, many meta-heuristic algorithms are proposed for optimization of various problems. Some of them originally are presented for continuous optimization problems and some others are just applicable for discrete ones. In the literature, sizing optimization of truss structures is one of the discrete optimization problems which is solved by many meta-heuristic algorithms. In this paper, in or...

The EA Sports Player Performance Index is a rating system for soccer players used in the top two tiers of soccer in England—the Premier League and the Championship. Its development was a collaboration among professional soccer leagues, a news media association, and academia. In this paper, we describe the index and its construction. The novelty of the index lies in its attempts to rate all play...

The aim of the study was to determine whether there was a difference in anaerobic endurance between soccer, handball and basketball players. One hundred fifty players (mean age: 22.35±4.31 years), 50 from each sport (mean age: soccer, handball and basketball players 23.54±4.19, 20.42±4.48, 23.10±3.63 years, respectively), pertained to the highest level of their sport in Croatia; some were even ...

The purpose of this study was to analyze the leadership power perceptions of soccer coaches and soccer players according to their educational levels. Data were collected from 165 male soccer coaches and 870 male soccer players. Adapted versions of the "Power in Soccer Questionnaire-Other", the "Power in Soccer Questionnaire-Self" and an "information form" were used for data collection, and coll...