Resumen de Influência de diferentes sistemas táticos sobre a intensidade de esforço e a fadiga de jogadores de futebol da categoria sub-17

Kevin Silva Araujo, Daniel dos Santos, Leonardo Ribeiro da Costa, Eliane Aparecida Castro, Carlos Eduardo Pimenta, Luciana Moreira Motta Raiz, Belmar Ramos Junior, André Luiz Berzoti Ribeiro, Matheus Silva Queiroz

• English

  The football game is characterized as a high intensity sport with short recovery intervals, thus, parameters of load measurement during the game have been analyzed to evolve the performance of athletes. The objective of this study was to evaluate the influence of different tactical systems on the intensity of effort (IE), power and fatigue in 10 players, with mean age of 16.6 ± 0.5 years. Heart rate (HR) was monitored through cardiac monitors (Firstbeat®) during two simulated games using the tactical systems 1-4-4-2 (S-1) and 1-4-3-3 (S-2). In order to quantify the values of maximum power (Pmáx) and minimum power (Pmin), the RAST (Running-based anaerobic sprint test) anaerobic running test was used in three moments: T1- baseline test, T2- ), T3 – post- test (S-2). The EI recorded in the games did not show significant differences when compared to 1-4-4-2 x 1-4-3-3 (HRmax S-1 189.4 ± 8.18 and 193.6 ± 5.13 bpm S-2) (p 0,151). The mean HR recorded in S-1 was 162.6 ± 7.23 and 164.3 ± 9.64 bpm S-2 (p 0,711). The power values did not present significant changes when compared in the three moments (T1, T2, T2). There was a significant increase in the values of the fatigue index between moments T1 and T2 (* p <0.05). The results obtained in this research demonstrate that both tactical systems studied presented similar responses of the HR and were not able to change the values of maximum and minimum power in the players.

• português

  O jogo de futebol é caracterizado como um esporte de alta intensidade com curtos intervalos de recuperação, sendo assim, parâmetros de mensuração de carga durante o jogo vem sendo analisados para evoluir o desempenho dos atletas. O objetivo deste estudo foi avaliar a influência de diferentes sistemas táticos sobre a intensidade de esforço (IE), potência e fadiga em 10 jogadores, com média de idade de 16,6 ± 0,5 anos. A frequência cardíaca (FC) foi monitorada através de monitores cardíacos (Firstbeat®) durante dois jogos simulados utilizando os sistemas táticos 1-4-4-2 (S-1) e 1-4-3-3 (S-2). Para quantificar os valores de potência máxima (Pmáx.) e potência mínima (Pmín) foi utilizado o teste de corrida anaeróbia RAST (Running-based anaerobic sprint test) em três momentos: T1– teste basal, T2 – teste pós (S-1), T3 – teste pós (S-2). Os valores de FC registrada nos jogos não demonstraram diferenças significativas quando comparado 1-4-4-2 x 1-4-3-3 (FCmáx S-1= 189.4 ± 8.18 e S-2= 193.6 ± 5.13 bpm) (p 0,151).  A FC média registrada no S-1 foi 162.6 ± 7.23 e S-2 = 164.3 ± 9.64 bpm (p 0,711). Os valores de potência não apresentaram alterações significativas quando comparadas nos três momentos (T1, T2, T2). Houve um aumento significativo nos valores do índice de fadiga entre os momentos T1 e T2 (*p < 0,05). Os resultados obtidos nesta pesquisa demonstram que ambos os sistemas táticos estudados apresentaram respostas semelhantes da FC e não foram capazes de alterar os valores de potência máxima e mínima nos jogadores. ABSTRACT Influence of different tactical systems on the intensity of effort and fatigue of football players of the sub-17 categoryThe football game is characterized as a high intensity sport with short recovery intervals, thus, parameters of load measurement during the game have been analyzed to evolve the performance of athletes. The objective of this study was to evaluate the influence of different tactical systems on the intensity of effort (IE), power and fatigue in 10 players, with mean age of 16.6 ± 0.5 years. Heart rate (HR) was monitored through cardiac monitors (Firstbeat®) during two simulated games using the tactical systems 1-4-4-2 (S-1) and 1-4-3-3 (S-2). In order to quantify the values of maximum power (Pmáx) and minimum power (Pmin), the RAST (Running-based anaerobic sprint test) anaerobic running test was used in three moments: T1- baseline test, T2- ), T3 – post- test (S-2). The EI recorded in the games did not show significant differences when compared to 1-4-4-2 x 1-4-3-3 (HRmax S-1 189.4 ± 8.18 and 193.6 ± 5.13 bpm S-2) (p 0,151). The mean HR recorded in S-1 was 162.6 ± 7.23 and 164.3 ± 9.64 bpm S-2 (p 0,711). The power values did not present significant changes when compared in the three moments (T1, T2, T2). There was a significant increase in the values of the fatigue index between moments T1 and T2 (* p <0.05). The results obtained in this research demonstrate that both tactical systems studied presented similar responses of the HR and were not able to change the values of maximum and minimum power in the players.