Julio Garganta
Universidade do Porto, Faculdade de Desporto, Faculty Member
Abstract This study aims to analyse the effect of different pitch surface, i.e. artificial turf (AT), natural turf (NT) and dirt field (DF) on running activity and technical demands of young soccer players (age:13.4 ± 0.5yrs; height:... more
Abstract This study aims to analyse the effect of different pitch surface, i.e. artificial turf (AT), natural turf (NT) and dirt field (DF) on running activity and technical demands of young soccer players (age:13.4 ± 0.5yrs; height: 161.82 ± 7.52cm; body mass; 50.79 ± 7.22kg; and playing experience: 3.5 ± 1.4 yrs). Running activity data were collected using GPS units which allowed the calculation time–motion variables. Technical performance data were registered filming soccer matches. Analysis of variance (ANOVA) with repeated measures was employed to assess differences among variables. Total distance covered; distance for low-intensity running and very high-intensity running were higher on AT than NT (TD: η2 = .09, p = .007); (LIR: η2 = .062, p ≤ .05); and (VHIR: η2 = .05, p ≤ .05), respectively. Significant differences were identified between pitch surfaces on successful passing (η2 = .052, p = .051); unsuccessful passing (η2 = .155, p < .001); and interceptions (η2 = .1087, p < .001). Results suggest that pitch surface influences running activity and technical actions of young players. This information contributes to understand the different demands imposed in each pitch surface and, provides to the coaches the opportunity to implement strategies that could optimise players’ performance.
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Goal scoring has been regarded as the ultimate indicator of offensive success in soccer. Research on patterns that characterize goal-scoring possessions have frequently employed reductionist approaches. This paper aimed to examine the... more
Goal scoring has been regarded as the ultimate indicator of offensive success in soccer. Research on patterns that characterize goal-scoring possessions have frequently employed reductionist approaches. This paper aimed to examine the patterns of numerical relations of open-play goal-scoring possessions of the 2014 FIFA™ World Cup winner team. We hypothesized that a more unstable distribution of players in goal-scoring possessions Germany would be generated in sub-areas of the effective play-space closer to opponents’ goal. We analysed 11 video sequences from 6 matches of the German team in this tournament. The uncertainty of teams’ numerical advantage within sub-areas of play was calculated for each offensive sequence through Shannon’s entropy. We observed higher entropy within Germany’s Central Offensive (opponents’ Central Defensive) sub-area in comparison with the other sub-areas of play. There is a tendency of the German team to generate numerical instability within locations closer to the opponents’ goal, possibly due to the shifting of positions, drawing of opposing defenders towards peripheral areas and the creation of spaces for teammates to exploit within this risky zone to the opposition.
Research Interests: Sociology, Soccer, German, Entropy, Football, and 4 moreTournament, Offensive Realism, Exploit, and Entropie
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We aimed to describe and compare the general morphological, somatotype and training background characteristics of Iberian waterpolo players (22 Portuguese and 22 Spanish National Teams players) considering their playing positions. The... more
We aimed to describe and compare the general morphological, somatotype and training background characteristics of Iberian waterpolo players (22 Portuguese and 22 Spanish National Teams players) considering their playing positions. The International Working Group of Kinanthropometry guidelines was herein followed, and a somatochart was obtained through specific software (Somatotype, Calculation and Analysis. (c)2001 SWEAT technologies). Spanish players train more hours per week (22.8 ±9.5 vs.12.2 ±5.6), are taller (187.4 cm ±6.6 vs.180.3 cm ±5.1), heavier (89.2 kg ±11.6 vs.79.1 kg ±10.0), show higher arm span (195.7 cm ±8.5 vs.185.2 cm ±7.4) and muscle mass percentage (49.0% ± 1.8 vs.46.0% ±6.0), and tend to be more mesomorphic (5.19 ±1.27 vs.4.26 ±1.32) than the Portuguese players. Concerning field positions, Spanish center forward players train more hours per week than the Portuguese (20.2 ±9.1 vs.12.2 ±3.8) and show higher arm span (204.4 cm ±7.3 vs.184.0 cm ±6.5). Spanish goal ke...
Research Interests: Physics and Portuguese
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In soccer, it seems relevant to understand the relationship between the ball recovering and the subsequent success or failure of attacking play. However, few studies have considered the links between the type of ball recovery in different... more
In soccer, it seems relevant to understand the relationship between the ball recovering and the subsequent success or failure of attacking play. However, few studies have considered the links between the type of ball recovery in different pitch zones, the competition stages and the overall teams success. The present study aims to analyze the attacks ( n = 1619) carried out by the semi-finalist teams in the 2010 FIFA World Cup in order to explore ball recovery patterns as a performance indicator. SoccerEye observational instrument, SoccerEye recording software, Sequential Data Interchange Standard-Generalized Sequential Querier (SDIS-GSEQ) and SPSS analytic software—one-way analysis of variance, two-way analysis of variance and regressions—were applied. Direct ball recovery, in specific by interception and defensive behavior followed by a pass, was the mostly frequent behavior, with the later inducing attacking play efficacy ( p<0.017). Differences were detected between the group ...
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Shooting performance of globally ranked winning, drawing and losing water polo teams was compared, and technical and tactical success indicators were identified. In total, 886 shots from a world championship final round were videotaped... more
Shooting performance of globally ranked winning, drawing and losing water polo teams was compared, and technical and tactical success indicators were identified. In total, 886 shots from a world championship final round were videotaped and teams were clustered for a performance evaluation (considering differences between game outcomes). Shooting speeds were assessed by a radar, with higher values observed at further distances from the goal than in the central area close to the goal (p ≤ 0.00, ES: 2.54). Shots tended to be more frequent from the central corridor, with ≤50% and >75% relative shot efficacy attained from field areas 3 and 6; winning teams obtained better results. Furthermore, winners had greater success than losers when shooting from field area 2 (p ≤ 0.04, ES: 1.13) and towards the goal zone 2 (p < 0.03, ES: 1.10). They also attained better efficacy regarding shots towards goal zone 1, had better efficacy on the part of centre-forwards (p ≤ 0.05, ES: 0.85-1.27), ...
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Resumo O presente trabalho pretende analisar a abordagem de esporte coletivo proposta por Claude Bayer (O Ensino dos Desportos Colectivos, 1994), Oliveira & Graça (organizadores do livro O Ensino dos Jogos Desportivos, 1995) e Julio... more
Resumo O presente trabalho pretende analisar a abordagem de esporte coletivo proposta por Claude Bayer (O Ensino dos Desportos Colectivos, 1994), Oliveira & Graça (organizadores do livro O Ensino dos Jogos Desportivos, 1995) e Julio Garganta (Para uma Teoria dos Jogos Desportivos Colectivos, 1995), avançando na discussão da relevância, do lugar e do tempo do ensino dos gestos técnicos específicos de cada modalidade na citada proposta. Utilizando um conceito cultural de técnica corporal, a partir do qual deve ser considerado o significado de todo e qualquer movimento no seio de uma dada sociedade, pretende-se analisar o ensino dos gestos técnicos, não somente a partir da dimensão da eficiência, mas dentro de contextos culturais específicos, considerando-se também a eficácia simbólica. Para analisar o ensino dos esportes coletivos, este trabalho propõe uma estrutura pendular, que tem na sua base os princípios operacionais e na sua extremidade os gestos técnicos específicos de cada mod...
Water polo is a team sport that has been suffering rule changes aiming for a more attractive game. Our goal was to unveil whether different offensive playing styles or methods were adopted by elite national teams from Eastern Europe and... more
Water polo is a team sport that has been suffering rule changes aiming for a more attractive game. Our goal was to unveil whether different offensive playing styles or methods were adopted by elite national teams from Eastern Europe and from other world countries after the new rules framework was applied at the 2019 FINA World Championship. Additionally, we questioned whether those rules induced a more dynamic game. A total of 648 offensive sequences from games contested by the top-six ranked national squads were analysed. Descriptive statistics, parametric and nonparametric tests were computed, and the effect size was used. The eastern Europeans were the tallest (t (76) = −4.081; p < 0.001, d = 0.42) and the Hungarians were higher than Italians (p = 0.005, dz = −0.41). Offensive time length differed between teams (H (5) = 30.50, p < 0.001) with Serbia being the fastest (Mdn = 22 s). In successful attacks without extra time, Italy was quicker than Spain (17.5 vs. 25.0 s; p = 0...
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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... more
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'…
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Título: Influencia de la longitud del campo en los comportamientos inter e intra -equipo en jóvenes jugadores de fútbol. Resumen: El comportamiento táctico puede verse afectado por los cambios en los formatos de juegos reducidos (SSG). El... more
Título: Influencia de la longitud del campo en los comportamientos inter e intra -equipo en jóvenes jugadores de fútbol. Resumen: El comportamiento táctico puede verse afectado por los cambios en los formatos de juegos reducidos (SSG). El objetivo del presente estudio fue analizar la influencia de diferentes longitudes del terreno de juego en formatos SSG-de-7 jugadores en jóvenes futbolistas. 14 jugadores masculinos de fútbol en cada grupo de edad (13 y 14 años, U13 y U14, respectivamente) se dividieron en dos equipos de siete jugadores, quienes jugaron en cuatro SSGs de 7 minutos de duración, intercalados con 4 minutos de recuperación pasiva. La única modificación en el formato SSG fue longitud del terreno: 60 m (SSG60), 50 m (SSG50), 40 m (SSG40) y 30 m (SSG30), mientras que la anchura del campo de 40 m se mantuvo constante. Las variables utilizadas para caracterizar el comportamiento colectivo se agruparon en: a) variables intra-equipo, es decir, la longitud del equipo (L), anch...
O objetivo do presente estudo foi analisar a produção científica referente aos aspectos tático-técnicos nos JEC publicada em periódicos brasileiros entre 2000 e 2015. Por meio da busca online em 14 revistas, foram selecionados 335... more
O objetivo do presente estudo foi analisar a produção científica referente aos aspectos tático-técnicos nos JEC publicada em periódicos brasileiros entre 2000 e 2015. Por meio da busca online em 14 revistas, foram selecionados 335 artigos. Os trabalhos foram classificados nas seguintes categorias temáticas: Análise do desempenho tático-técnico, Metodologias de ensino, Análise do desempenho energético-funcional, Formação de treinadores, Formação de atletas e Outros. A partir de 2009, verifica-se um aumento substancial no número de publicações. A maior frequência de publicações (60,9%) encontra-se entre as temáticas Análise do desempenho tático-técnico e Metodologias de ensino. Adicionalmente, das 16 modalidades esportivas exibidas nos artigos, o futebol e o futsal contemplam 50,7% das publicações. Conclui-se que a produção científica acerca dos aspectos tático-técnicos nos JEC ainda é pouco abrangente e plural, portanto, mais estudos são necessários, sobretudo na Formação de Treinado...
Research Interests: Psychology and Movimento
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Várias tentativas têm sido feitas para descrever a estrutura do rendimento no Futebol. No entanto, apesar de alguns factores poderem já ser reunidos, os catálogos de prioridades e as estruturas hierárquicas estabelecidas pouco mais têm... more
Várias tentativas têm sido feitas para descrever a estrutura do rendimento no Futebol. No entanto, apesar de alguns factores poderem já ser reunidos, os catálogos de prioridades e as estruturas hierárquicas estabelecidas pouco mais têm conseguido do que reproduzir pequenas e desarticuladas fracções do jogo. Todavia, a realidade tem demonstrado que a pertinência do estudo dos problemas inerentes ao jogo e ao jogador deverá situar-se mais ao nível da interacção dos factores do que em cada um deles per se. Diversas conclusões decorrentes de vários estudos realizados, fazem emergir a necessidade de encontrar métodos que permitam reunir e organizar os conhecimentos, a partir do reconhecimento da complexidade do jogo de Futebol e das propriedades de interacção dinâmica das equipas implicadas, enquanto conjuntos ou totalidades. No presente artigo pretendemos evidenciar que a abordagem sistêmica do jogo de Futebol constitui uma importante referência a considerar nos processos de ensino e tr...
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Aquino, R, Carling, C, Palucci Vieira, LH, Martins, G, Jabor, G, Machado, J, Santiago, P, Garganta, J, and Puggina, E. Influence of situational variables, team formation, and playing position on match running performance and social... more
Aquino, R, Carling, C, Palucci Vieira, LH, Martins, G, Jabor, G, Machado, J, Santiago, P, Garganta, J, and Puggina, E. Influence of situational variables, team formation, and playing position on match running performance and social network analysis of brazilian professional soccer players. J Strength Cond Res XX(X): 000-000, 2018-The purpose of this study was to investigate the independent and interactive effects of situational variables, opposition team formation, and playing position on running performance and network analysis in Brazilian professional soccer players (n = 22). Global positioning system technology was used to determine total distance covered, mean speed, maximum running speed, and distance covered in 6 speed ranges. Social network analysis was used to assess interpersonal coordination (team interactions characterized as successful passes [n = 3,033] between teammates). Observations of match running performance (n = 129) and network analysis (n = 108) were obtained....
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Información del artículo Comparaçao da percepçao do treinador e dos jogadores, face à prestaçao táctica em futebol: estudo de caso numa equipa de juniores A.
... | Ayuda. Análisis del juego en el fútbol. Autores: Julio Garganta; Localización: Training fútbol: Revista técnica profesional, ISSN 1577-7480, Nº 64, 2001 , pags. 14-27. © 2001-2010 Universidad de La Rioja · Todos los derechos... more
... | Ayuda. Análisis del juego en el fútbol. Autores: Julio Garganta; Localización: Training fútbol: Revista técnica profesional, ISSN 1577-7480, Nº 64, 2001 , pags. 14-27. © 2001-2010 Universidad de La Rioja · Todos los derechos reservados. XHTML 1.0; UTF‑8.