Gibson Moreira Praça

Tactical Knowledge, Decision-Making, and Brain Activation Among Volleyball Coaches of Varied Experience

This study compared decision-making (DM) of experienced and novice volleyball coaches while measuring blood flow brain activation with functional near-infrared spectroscopy. We sampled 34 coaches (mean [M] age of 32.5, standard deviation [SD] = 9.4 years) divided into two experience groups: (a) novice (M = 2.8, SD = 1.9 years) and (b) experienced (M = 19, SD = 7.2 years). We evaluated coaches’ DM through their responses to video-based scenarios of attacks performed in the extremities of the net within the Declarative Tactical Knowledge Test in Volleyball. We found no significant DM differences between the two groups of coaches (p = .063), though novice (vs. experienced) coaches showed greater blood flow of the prefrontal cortex when visualizing the game situations. While experienced coaches may have better prefrontal neural efficiency during DM in these situations, further research is needed to evaluate other cerebral areas; since blood flow is an indirect measure of neural efficiency, and activity in remaining cortical components was unknown in this study.

Space Creation Dynamics in Basketball Small-Sided Games:

Space creation dynamics (SCDs) describe actions players perform to create a scoring opportunity. This study compared SCDs and types of offense during three different three versus three (3vs.3) basketball small-sided games (SSGs) played in half court: 3vs.3 with man-to-man defense in half playing area (3vs.3HALF), 3vs.3 with man-to-man defense in full playing area (3vs.3FULL), and 3vs.3 with reduced shot clock (3vs.3RT). We also investigated the efficacy of SCDs in all SSGs and the reliability of SCDs in 3vs.3HALF. While the efficacy of SCDs did not differ among these SSGs, 3vs.3RT presented significantly more “space creation with ball dribbled” and “shot clock violations,” and less “on ball screens.” 3vs.3FULL presented no differences in the SCDs and types of offense compared with 3vs.3HALF. Reliability within 3vs.3HALF was higher for “space creation with ball dribbled,” “space creation without the ball,” “set offenses,” “fast breaks,” and “loss of ball during passing or dribbling.” We concluded that 3vs.3 basketball SSGs with different rules can be used for training different tactical behaviors important to formal games, especially since the 3vs.3HALF presented good reliability for many variables related to tactical behavior.

Relação entre experiência e conhecimento tático processual em jovens jogadores de futebol

The study investigated the relationship between the Processual Tactical Knowledge (PTK) and experience. Soccer players from a top club from Belo Horizonte were evaluated and they answered a questionnaire about the variables of experience. The PTK was evaluated through the System of tactical assessment in Soccer (FUT-SAT). A Spearman’s correlation matrix was stablished for the data analysis using the software SPSS. 20.0 with a 0,05 level of significance. Results showed positive association between age and offensive tactical efficacy. Lastly, the variables as age, practice time and time in club didn’t showed impact about the PTK.

A INFLUÊNCIA DO 1º GOL NO RESULTADO FINAL DE PARTIDAS DO CAMPEONATO BRASILEIRO SÉRIES A E B

Estudo objetivou analisar a influencia de se marcar o primeiro gol da partida no resultado final do Campeonato Brasileiro series A e B. Analisou-se o resultado final e a marcacao do primeiro gol de jogos 2011 a 2014 nas series A e B. Nos resultados observou-se associacao significativa entre marcar o primeiro gol e vencer as partidas na serie A. Resultados similares foram observados na serie B, revelando a importância da marcacao do primeiro gol para a obtencao de vitorias em partidas de futebol. Conclui-se haver uma associacao significativa entre marcar o primeiro gol e vencer no campeonato brasileiro.

DESEMPENHO TÉCNICO DE JOGADORES DE FUTEBOL NOS ESCALÕES SUB-14 E SUB-15

Objetivou-se comparar o desempenho tecnico de jogadores de Futebol dos escaloes sub-14 e sub-15 quanto ao chute, passe e finalizacao. Utilizou-se o protocolo de Mor e Christian (1979) com adaptacoes para acessar o nivel de desempenho tecnico de 10 jogadores do escalao sub-14 e 16 do escalao sub-15 integrantes de uma equipe de futebol de Belo Horizonte que disputa competicoes em âmbito nacional. Utilizou-se o teste de Shapiro-Wilk para verificacao da normalidade, Mann-Whitney U para comparacao dos escores dos atletas dos diferentes escaloes e calculou-se o tamanho do efeito. Observaram-se diferencas significativas, entre as performances nos testes de conducao e chute, sendo o melhor desempenho em amos os fundamentos no escalao sub-15. Salienta-se a importância da avaliacao de variaveis tecnicas e taticas em jogadores de Futebol de forma que possibilite-se adequar o processo de ensino-aprendizagem-treinamento a necessidade de cada grupo especifico. Conclui-se haver diferencas significativas no desempenho tecnico de praticantes de Futebol dos escaloes sub-14 e sub-15.

CONHECIMENTO TÁTICO DECLARATIVO EM JOGADORES DE FUTEBOL SUB-14 E SUB-15

Este artigo comparou o Conhecimento Tatico Declarativo (CTD) de jogadoresde Futebol das categorias sub-14 e sub-15. Utilizou-se o teste de Mangas, com cenasde video previamente validadas, aplicando-o em 26 atletas do sexo masculino (16 atletassub-15 e 10 atletas sub-14). Os dados foram analisados atraves do Median Test. Atletasda categoria sub-15 apresentaram CTD significativamente superior aos atletas sub-14,revelando que o tempo de pratica apresenta-se como importante no desenvolvimento doCTD de jogadores de Futebol.