A suplementação de cafeí­na pode fazer corredores correrem mais e melhorar estratégia de ritmo

  • Elias de França GEPAME - Metabolism of Exercise Research and Study Group - São Judas University
  • Ana Paula Xavier Laboratory of Exercise and Movement Sciences, Mackenzie Presbiterian University, São Paulo, SP, Brazil
  • Igor Roberto Dias GEPAME - Metabolism of Exercise Research and Study Group - São Judas University
  • Romeu Rodrigues de Souza Professor, Post-graduate Course on Physical Education, São Judas Tadeu University, São Paulo, Brazil
  • Sônia Cavalcanti Corrêa Laboratory of Exercise and Movement Sciences, Mackenzie Presbiterian University, São Paulo, SP, Brazil
  • Marco Antônio Rabelo da Silva Faculty of Sport Sciences and Physical Education, University of Coimbra, Portugal
  • Cezar Antônio Rabelo da Silva School of Integrative and Global Majors (SIGMA), University of Tsukuba, Japan
  • Raul Agostinho Simões Martins Faculty of Sport Sciences and Physical Education, University of Coimbra, Portugal
  • Vinicius Barroso Hirota Laboratory of Exercise and Movement Sciences, Mackenzie Presbiterian University, São Paulo, SP, Brazil
  • Ronaldo Vagner Thomatieli dos Santos Centro de Estudos em Psicobiologia e Exercí­cio (CEPE), São Paulo, SP, Brasil
  • Érico Chagas Caperuto GEPAME - Metabolism of exercise Research and Study group - São Judas University
Palavras-chave: Tempo de Exaustão, Estratégia de Ritmo, Auxílio Ergogênico, Percepção Subjetiva de Esforço

Resumo

A cafeí­na pode estimular o sistema nervoso central e aumentar a tolerância ao exercí­cio por meio de mudanças na percepção subjetiva de esforço (PSE), isso pode mudar a estratégia de ritmo (ER) durante uma corrida. Nosso objetivo foi verificar se a suplementação de cafeí­na promove mudanças na ER durante um teste de corrida de laboratório (TCL). De modo duplo-cego, cruzado, randomizado e contrabalançado, quinze homens saudáveis (idade: 24 ± 4,4 anos, VO2max. 53 ± 5 ml.Kg-1.min-1) ingeriram 6 mg/kg-1 de cafeí­na ou placebo, 60 minutos antes do TCL. O TCL consistiu de séries de três minutos (velocidade fixada à 1 km/h acima do "Onset Blood Lactate Accumulation") até fadiga volicional; O Intervalo de Tempo de Descanso (ITD) entre as séries foi escolhido pelos participantes no primeiro teste (entre 30 a 60s). PSE, frequência cardí­aca (FC) e lactato ([La]p) foram coletados em repouso, imediatamente após cada série e ao final do teste. O tempo de exaustão foi maior na situação cafeí­na (p= 0,014); o ITD foi significativamente menor na situação cafeí­na (p= 0,048), isso fez diminuir significativamente o tempo para realizar uma mesma distância (p= 0,034). A FC e [La]p foram semelhantes para ambas as condições (p= 0,252, p= 0,129, respectivamente). Apesar da semelhança da PSE ao longo do teste (p= 0,380), na situação cafeí­na não houve um aumento abrupto ao longo do teste como ocorreu na situação placebo. A suplementação de cafeí­na pode influenciar positivamente a ER durante uma corrida, além de aumentar a capacidade de correr mais (no mesmo evento).

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Publicado
2018-02-06
Como Citar
de França, E., Xavier, A. P., Dias, I. R., de Souza, R. R., Corrêa, S. C., Rabelo da Silva, M. A., Rabelo da Silva, C. A., Martins, R. A. S., Hirota, V. B., dos Santos, R. V. T., & Caperuto, Érico C. (2018). A suplementação de cafeí­na pode fazer corredores correrem mais e melhorar estratégia de ritmo. RBNE - Revista Brasileira De Nutrição Esportiva, 11(67), 813-825. Obtido de https://www.rbne.com.br/index.php/rbne/article/view/907
Secção
Artigos Científicos - Original