scholarly journals Prevalência de ações táticas ofensivas de grupo no Campeonato Brasileiro de Futebol Série A (2018 e 2019)

2021 ◽  
Vol 19 (2) ◽  
pp. 1-5
Author(s):  
Allan Gabriel Silva Nascimento ◽  
João Marcelo Niquini Caríssimo ◽  
César Milagres Silva ◽  
Siomara Aparecida Silva

INTRODUÇÃO: O futebol é um dos esportes mais populares, sendo a tática um dos quesitos fundamentais para o sucesso. OBJETIVO: Identificar a associação entre os quantitativos das ações táticas ofensivas de grupo e os parâmetros de resultados das equipes mais bem colocadas no Campeonato Brasileiro Série A, temporadas 2018 e 2019.  MÉTODOS: Analisaram-se as seis equipes primeiras colocadas do Campeonato Brasileiro de Futebol Série A 2018 e 2019. O instrumento utilizado foi o Footstats. Foi realizada a análise descritiva das ações táticas ofensivas de grupo e a correlação de Spearman rho entre as variáveis das ações táticas com gols pró e pontos por meio do SPSS™ v. 23. RESULTADOS: A ação tática ofensiva de grupo “virada de bola” obteve associações significativas com “pontos” (r=0,829; p=0,042) e “gols pró” (r=0,943; p=0,005) no campeonato de 2018. No campeonato de 2019, as ações táticas ofensivas de grupo “assistências” e “cruzamentos” evidenciaram associação significativa com “pontos” (r=0,812; p=0,050 e r=0,928; p=0,008, respectivamente), “gols pró” com “virada de bola” (r=0,943; p=0,005) e “pontos” (r=0,812; p=0,050). CONCLUSÃO: As ações táticas ofensivas de grupo associaram-se com gols pró e pontos na classificação final das primeiras equipes em ambos os anos. Destaca-se a “virada de bola” no campeonato de 2018, além de “assistências” e “cruzamento” na edição de 2019, como ações que podem ser relevantes para a conquista dos pontos e por consequência melhores resultados dentro de tais competições.ABSTRACT. Prevalence of offensive tactical group actions in the Brazilian Football Championship A Series (2018-2019)BACKGROUND: Soccer is one of the most popular sports worldwide, with tactics being one of the fundamental requirements for teams to succeed in this sport. OBJECTIVE: o identify the association between the quantitative of the group’s offensive tactical actions and the parameters of result of the top six teams of the A-Series Brazilian Football Championship, seasons 2018 and 2019. METHODS: The top six teams of the two seasons were analyzed. The instrument employed was the software Footstats. Descriptive and correlation analyzes were carried out, together with Spearman rho correlation test between the variables of the group’s offensive tactical actions and the parameters of goals pro and points. RESULTS: The offensive tactical action “switch sides” obtained significant associations with “points” (r=0.829; p=0.042) and “goals for” (r=0.943; p=0.005) in the 2018 season. In 2019, the offensive tactical actions “assistances” and “crosses” evidenced significant associations with “points” (r=0.812; p=0.050 and r=0.928; p=0.008, respectively), as well as “goals for” with “switch sides” (R=0.943; p=0.005) and “points” (r=0.812; p=0.050). CONCLUSION: The number of groups offensive tactical actions were associated with the number of goals pro and points in the final classification of the top teams of both seasons. The actions “switch sides” in season 2018, besides “assistances” and “crosses” in season 2019 appeared as relevant for the achievements of points and, consequently, better results in such competitions.

1977 ◽  
Author(s):  
John P. Alexander ◽  
Pierre E. Conner ◽  
Gary C. Hamrick
Keyword(s):  

1986 ◽  
Vol 99 (2) ◽  
pp. 233-238 ◽  
Author(s):  
Charles Livingston

An action of a group, G, on a surface, F, consists of a homomorphismø: G → Homeo (F).We will restrict our discussion to finite groups acting on closed, connected, orientable surfaces, with ø(g) orientation-preserving for all g ε G. In addition we will consider only effective (ø is injective) free actions. Free means that ø(g) is fixed-point-free for all g ε G, g ≠ 1. This paper addresses the classification of such actions.


1985 ◽  
Vol 32 (2) ◽  
pp. 299-308 ◽  
Author(s):  
Geoff Prince

This paper deals with the interaction between the invariance group of a second order differential equation and its variational formulation. In particular I construct equivalent Lagrangians from all such group actions, thereby successfully completing an earlier attempt of mine which dealt with some traditionally important classes of actions.


2005 ◽  
Vol 04 (05) ◽  
pp. 517-538 ◽  
Author(s):  
ERNST DIETERICH

The category of all 2-dimensional real division algebras is shown to split into four full subcategories, each of which is given by the natural action of a Coxeter group of type 𝔸1 or 𝔸2 on the set of all pairs of ellipses in ℝ2, which are centred in the origin and have reciprocal axis lengths. Cross-sections for the orbit sets of these group actions are being determined. They yield a classification of all 2-dimensional real division algebras. Moreover all morphisms between the objects in this classifying list are described, and thus an explicit and geometric picture of the category of all 2-dimensional real division algebras is obtained. This elementary and self-contained exposition extends Darpö and Dieterich's recent description [14] of the category of all 2-dimensional commutative real division algebras, which in turn is based on Benkart, Britten and Osborn's investigation [4] of the isotopes of ℂ. It also supplements earlier contributions of Althoen and Kugler [2], Burdujan [9], Gottschling [25], Petersson [33], Hübner and Petersson [29], and Doković and Zhao [23] to the problem of classifying all 2-dimensional real division algebras.


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