Effects of Caffeine Ingestion on Anaerobic Capacity in a Single Supramaximal Cycling Test

Autor(es)

Miyagi, Willian E. ^{[1, 2]} ; Bertuzzi, Romulo C. ^[3] ; Nakamura, Fabio Y. ^[4] ; de Poli, Rodrigo A. B. ^{[1, 2]} ; Zagatto, Alessandro M. ^{[1, 2]}

Afiliação do(s) autor(es)

^[1] Lab Physiol & Sport Performance LAFIDE, Bauru - Brazil

^[2] Sao Paulo State Univ UNESP, Sch Sci, Postgrad Program Movement Sci, Bauru - Brazil

^[3] Univ Sao Paulo, Sch Phys Educ & Sport, Sao Paulo - Brazil

^[4] G dAnnunzio Univ Chieti Pescara, Dept Med & Aging Sci, Pescara - Italy

• Tipo de documento: Artigo Científico
• Fonte: FRONTIERS IN NUTRITION; v. 5, SEP 20 2018.
• Citações Web of Science: 1

Resumo

The aim of this study was to verify the effects of caffeine on anaerobic capacity estimated by the sum of the estimated glycolytic {[}E-{[}La]] and phosphagen {[}E-PCr] metabolism based on blood lactate and excess post-oxygen consumption responses (AC({[}La-]+EPOCfast)). Fourteenmale cyclists were submitted to a graded exercise test to determine themaximal oxygen uptake ((V)over dotO(2max)) and intensity associated with. (V)over dotO(2max) (i(V)over dotO(2max)). Subsequently, the participants performed two supramaximal efforts at 115% of i(V)over dotO(2max) to determine the AC({[}La-]+EPOCfast), after previous supplementation with caffeine (6 mg.kg(-1)) or a placebo (dextrose), in a cross over, randomized, double blind, and placebo-controlled design. The time to exhaustion was higher in the caffeine (186.6 +/- 29.8 s) than in the placebo condition (173.3 +/- 25.3 s) (p = 0.006) and a signi fi cant correlation was found between them (r = 0.86; P = 0.00008). Significant differences were not found between AC({[}La-] + EPOCfast) values from the placebo (4.06 +/- 0.83 L and 55.2 +/- 5.7 mL.kg(-1)) and caffeine condition (4.00 +/- 0.76 L and 54.6 +/- 5.4 mL.kg(-1)); however, a significant correlation was observed only for AC({[}La-]+EPOCfast) expressed in absolute values (r = 0.74; p < 0.002). The E-{[}La] and E-PCr also presented no significant differences and they were signi fi cantly correlated (r = 0.82 and r = 0.55, respectively; p < 0.05). We conclude based on the overall comparison of mean values between two treatments that acute caffeine ingestion improves the time to exhaustion but does not affect anaerobic capacity estimation. (AU)

• Processo FAPESP: 14/02829-5 - Determinação do máximo déficit acumulado de oxigênio utilizando apenas uma sessão de exercício supramáximo em cicloergômetro
• Beneficiário: Willian Eiji Miyagi
• Modalidade de apoio: Bolsas no Brasil - Mestrado
• Processo FAPESP: 13/12940-8 - Determinação do déficit máximo de oxigênio acumulado por meio de uma única sessão de esforço supramáximo: análise da reprodutibilidade, influência do ergômetro e intensidade de esforço
• Beneficiário: Alessandro Moura Zagatto
• Modalidade de apoio: Auxílio à Pesquisa - Regular
• Processo FAPESP: 16/17836-2 - Efeitos da pós ativação neuromuscular induzida por saltos na capacidade anaeróbia em cicloergômetro
• Beneficiário: Rodrigo de Araujo Bonetti de Poli
• Modalidade de apoio: Bolsas no Brasil - Mestrado