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António Natal Campos Rebelo, Pedro Silva, Vincenzo Rago, Daniel Barreira, Peter Krustrup
The aims of this study were (i) to characterise the acceleration demands of two different formats of small-sided game (SSG), i.e., 4v4 + goalkeepers (4v4 + GK) and 8v8 + goalkeepers (8v8 + GK); (ii) to analyse the correlation between performance in power-based tests and acceleration-based physical loading during the two different SSG formats and (iii) to analyse the neuromuscular-induced fatigue. Eighteen adult male footballers participated in the study (20.7 ± 1.0 years, 178 ± 5 cm and 71.4 ± 2...
December 2016: Journal of Sports Sciences
Pedro Silva, Ricardo Duarte, Jaime Sampaio, Paulo Aguiar, Keith Davids, Duarte Araújo, Júlio Garganta
Abstract This study analysed the influence of field dimension and players' skill level on collective tactical behaviours during small-sided and conditioned games (SSCGs). Positioning and displacement data were collected using global positioning systems (15 Hz) during SSCGs (Gk+4 v. 4+Gk) played by two groups of participants (NLP- national-level and RLP-regional-level players) on different field dimensions (small: 36.8 × 23.8 m; intermediate: 47.3 × 30.6 and large: 57.8 × 37.4 m). Team tactical performance was assessed through established dynamic team variables (effective playing space, playing length per width ratio and team separateness) and nonlinear signal processing techniques (sample entropy of distances to nearest opponents and the teams' centroids' mutual information)...
December 2014: Journal of Sports Sciences
Angel Ric, Carlota Torrents, Bruno Gonçalves, Jaime Sampaio, Robert Hristovski
This study aimed to identify the tactical patterns and the timescales of variables during a soccer match, allowing understanding the multilevel organization of tactical behaviors, and to determine the similarity of patterns performed by different groups of teammates during the first and second halves. Positional data from 20 professional male soccer players from the same team were collected using high frequency global positioning systems (5 Hz). Twenty-nine categories of tactical behaviors were determined from eight positioning-derived variables creating multivariate binary (Boolean) time-series matrices...
2016: Frontiers in Psychology
Daniel Link, Michael F de Lorenzo
This research explores the influence of match importance on player activity in professional soccer. Therefore, we used an observational approach and analyzed 1,211 matches of German Bundesliga and 2nd Bundesliga. The importance measurement employed is based on post season consequences of teams involved in a match. This means, if a match result could potentially influence the final rank, and this rank would lead to different consequences for a team, such as qualification for Champions League opposed to qualification for Europe League, then this match is classified as important; otherwise not...
2016: PloS One
Austyn L Nealer, Dustin D Dunnick, Kylie K Malyszek, Megan A Wong, Pablo B Costa, Jared W Coburn, Lee E Brown
Nealer, AL, Dunnick, DD, Malyszek, KK, Wong, MA, Costa, PB, Coburn, JW, and Brown, LE. Influence of rest intervals after assisted sprinting on bodyweight sprint times in female collegiate soccer players. J Strength Cond Res 31(1): 88-94, 2017-Speed is a crucial element an athlete must possess to be successful. In soccer, the ability to accelerate faster than your opponent can result in being first to reach a ball on a breakaway or stopping a counter attack. A unique way to train explosive movements is to evoke postactivation potentiation (PAP) in the working muscles...
January 2017: Journal of Strength and Conditioning Research
Robert Rein, Daniel Memmert
Until recently tactical analysis in elite soccer were based on observational data using variables which discard most contextual information. Analyses of team tactics require however detailed data from various sources including technical skill, individual physiological performance, and team formations among others to represent the complex processes underlying team tactical behavior. Accordingly, little is known about how these different factors influence team tactical behavior in elite soccer. In parts, this has also been due to the lack of available data...
2016: SpringerPlus
Corrado Lupo, Antonio Tessitore
In a recent study, Lago-Penas and Gomez-Lopez (2014) demonstrated that during elite English soccer matches, the percentages of ball possession, entries into the final one-third of the pitch, and shots on goal were lower for the teams with a 1 goal up game status compared to those with 1 goal down condition. In addition, clubs with higher budgets preferred to control the match by dictating the play, primarily through ball possession. Elite soccer coaches may benefit from considering training protocols coherent with the financial budget of their clubs, but these considerations may be valuable also for non-elite soccer clubs...
February 2016: Perceptual and Motor Skills
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