Analysis of the execution of core tactical principles and technical efficiency of primary school futsal players / Análise da execução de princípios táticos fundamentais ofensivos e eficácia técnica de escolares praticantes de futsal

Abstract The study aimed to analyze the core tactical offensive principles and technical efficiency of primary school futsal players. Thirty-three students from a school in Paraná participated in the study. The System of Tactical Assessment in Soccer (FUT-SAT) and the System of Notational Analysis in Small-sided Soccer Games were used for tactical-technical analysis. It was found that the tactical principle "offensive coverage" was most frequently executed by the primary school futsal players (p = 0.01), followed by "width and length" without ball (p < 0.01). Moderate and strong significant correlations were identified between the execution frequency of the core tactical principles "penetration", "offensive coverage", "width and length without ball", "offensive unity" and efficiency in technical skills (from r = 0.43 to r = 0.82, p < 0.05). It is concluded that there is a model of playing near the game center in the presented age group, and that the efficiency of executing technical skills is associated with tactical behavior in game situation.

Resumo O estudo objetivou analisar os princípios táticos fundamentais ofensivos e a eficácia técnica de escolares praticantes de futsal. Participaram do estudo 33 alunos de uma escola no Paraná. Utilizou-se o Sistema de Avaliação Tática no Futebol (FUT-SAT) e o Sistema de Análise Notacional em Jogos Reduzidos de Futebol para análise tático-técnica. Constatou-se que o princípio tático "cobertura ofensiva" foi executado com mais frequência pelos escolares praticantes de futsal (p = 0,01) seguido pelo princípio "espaço sem bola" (p < 0,01). Correlações significativas moderadas e fortes foram identificadas entre a frequência de execução dos princípios táticos fundamentais "penetração", "cobertura ofensiva", "espaço com bola", "unidade ofensiva" e a eficiência em habilidades técnicas (de r = 0,43 a r = 0,82, p < 0,05). Conclui-se que no grupo etário avaliado, existe um modelo de jogar próximo ao centro de jogo e que a eficiência de execução técnica está associada com o comportamento tático em situação de jogo.

Examining offensive tactical actions performed by youth soccer players with different competitive contexts / Examinando as ações táticas ofensivas realizadas por jovens futebolistas de diferentes contextos competitivos

ABSTRACT The study examined offensive tactical actions performed by U-15 soccer players with different competitive contexts. 34 matches played by three different contexts of U-15 soccer clubs were used; brazilian national (BN), brazilian regional (BR), and italian national (IN). Five categories where used to analyze the soccer offensive actions: "number of players involved" (NJ), "ball touches" (NT), "passes" (NP), "corridor changes" (NTC), and "duration of ball possession" (TRA); the results were coded using Match Vision Studio® software. The BN presented higher values in all five offensive categories (p < 0.05) when compared to the IN. Multinomial regression evidenced relative contributions of NJ and NP on the chances of results in the BN. The increase of one player involved in the offensive action decreases by 84% the chances of "total success" with respect to "unsuccessful" (p < 0.05). The performance of each additional pass increases 4.9 times the chance of the play ending in "total success" and 4.7 times (p < 0.05) in "partial success" when compared to the "unsuccessful" category. The NJ in the action and the NP have a direct influence on the outcome of the offensive actions of the BN.

RESUMO O estudo examinou ações táticas ofensivas realizadas por jogadores de futebol sub-15 em diferentes contextos competitivos. Foram analisados 34 jogos disputados por clubes sub-15 de três diferentes contextos competitivos, sendo estes: brasileiro nacional (BN), brasileiro regional (BR) e italiano nacional (IN). Cinco categorias foram utilizadas para analisar as ações futebolísticas ofensivas: "número de jogadores envolvidos" (NJ), "toques sobre a bola" (NT), "passes" (NP), "mudanças de corredor" (NTC) e "duração da posse de bola". "(TRA); os resultados foram codificados usando o software Match Vision Studio®. O BN apresentou valores maiores nas cinco categorias ofensivas (p <0,05) quando comparado ao IN. A regressão multinominal evidenciou contribuições relativas de NJ e NP nas chances de resultados no BN. O aumento de um jogador envolvido na ação ofensiva diminuiu em 84% as chances de "êxito total" em relação a "sem êxito" (p <0,05). O desempenho de cada passe adicional aumentou em 4,9 vezes a chance da jogada terminar em "êxito total" e 4,7 vezes (p <0,05) em "êxito parcial" quando comparado à categoria "sem êxito". O NJ na ação e o NP tiveram influência direta no resultado das ações ofensivas do BN.

Tactical efficacy and offensive game processes adopted by Italian and Brazilian youth soccer players

Abstract Aim: To analyze success and failure of offensive sequences and the adopted offensive method in under-15 (U-15) and under-17 (U-17) soccer players. Methods: The sample was composed of 218 offensive sequences performed by U-15 and U-17 players selected from 28 matches, being 18 matches of an Italian team and 10 matches of a Brazilian team. All offensive sequences which ended in finalization were selected for the analysis. Using observational methodology, an adapted ad hoc observational instrument was built with the variables "number of players involved", "ball touches", "passing", "duration", and "corridor changes". Next, offensive actions were classified into three offensive game methods: counter-attack, quick attack, and positional attack. Results: Results revealed that teams which use positional attack expend more time constructing an offensive play, involve extra players, and change the ball corridor more often during offensive actions when compared to counter-attack and quick attack (p<0.01). Moreover, offensive efficacy did not present an association with the offensive method employed (X2=0.47; p=0.78). Sequences that finished in success presented significantly higher values of the number of touches (p=0.02), passes (p=0.003), and duration (p=0.01) in comparison to failure. Conclusion: The findings suggest that all offensive methods adopted can be used to reach success during a game of U-15 and U-17 soccer players.

Análise das sequencias táticas ofensivas das categorias sub-15 e sub-17 de um clube profissional de futebol brasileiro / Offensive tactical sequences analysis of u-15 and u-17 categories of a professional brazilian football club / Análisis de las secuencias tácticas ofensivas de categorias sub- 15 y sub-17 de un club profesional de fútbol brasileño

O estudo investigou as sequências táticas ofensivas das categorias sub-15 e sub-17 de um clube de futebol profissional. A análise de 147 sequências foi feita por meio do software Match Vision Studio Premium®, utilizando as variáveis propostas por Garganta (1997) e Almeida (2010). Não foram identificadas diferenças significativas nos comportamentos táticos das duas categorias. Foram verificadas correlações significativas entre o tempo de realização do ataque e o número de passes, número de jogadores, número de contatos com a bola e número de trocas de corredores (r > 0,81). Os resultados sugerem que há coerência do clube quanto às ideias de jogo trabalhadas com as categorias e que o tempo de realização do ataque está relacionado com o modelo de jogo destas.

The study investigated the offensive tactical sequences of the under-15 and under-17 categories of a professional football club. The analysis of 147 sequences was done through the software Match Vision Studio Premium®, using the variables proposed by Garganta (1997) and Almeida (2010). No significant differences were identified in tactical behaviors of the two categories. Significant correlations were verified between the time duration of attack and the number of passes, number of players, number of contacts with the ball and number of corridor changes (r > 0.81). The results suggest that there is coherence of the club regarding the game ideas worked with the categories and that time duration of attack is related to their game model.

El estudio investigó las secuencias tácticas ofensivas de las categorías sub-15 y sub-17 de un club de fútbol profesional. El análisis de 147 secuencias fue realizado por medio del software Match Vision Studio Premium®, utilizando las variables propuestas por Garganta (1997) y Almeida (2010). No se identificaron diferencias significativas en los comportamientos tácticos de las dos categorías. Se verificaron correlaciones significativas entre el tiempo de realización del ataque y el número de pases, número de jugadores, número de contactos con la bola y número de cambios de corredores (r> 0,81). Los resultados sugieren que hay coherencia del club en cuanto a las ideas de juego trabajadas con las categorías y qué tiempo de realización del ataque está relacionado con el modelo de juego de estas.