Anaerobic capacity estimated by the sum of both oxygen equivalents from the glycolytic and phosphagen pathways is dependent on exercise mode: Running versus cycling

Autor(es)

Redkva, Paulo Eduardo ^{[1, 2]} ; Miyagi, Willian Eiji ^{[1, 2]} ; Milioni, Fabio ^{[1, 2]} ; Zagatto, Alessandro Moura ^[2]

Afiliação do(s) autor(es)

^[1] Sao Paulo State Univ UNESP, Postgrad Program Movement Sci, Bauru, SP - Brazil

^[2] Sao Paulo State Univ UNESP, Sch Sci, Dept Phys Educ, Lab Physiol & Sports Performance LAFIDE, Bauru, SP - Brazil

• Tipo de documento: Artigo Científico
• Fonte: PLoS One; v. 13, n. 9 SEP 13 2018.
• Citações Web of Science: 3

Resumo

The purpose of this study was to verify whether the exercise modality (i.e., running and cycling) alters the magnitude of ``anaerobic{''} capacity estimated by a single supramaximal effort (AC({[}La]+EPOCfast)). Fourteen healthy men (age: 26 +/- 9 years) underwent a maximum incremental test and a supramaximal effort to exhaustion at 115% of the intensity associated with maximal oxygen uptake to determine the AC({[}La]+EPOCfast) (i.e., the sum of both oxygen equivalents from the glycolytic and phosphagen pathways), performed on both a treadmill and cycle ergometer. The maximal oxygen uptake during running was higher (p = 0.001; large effect size) vs. cycling (48.9 +/- 3.9mL.kg(-1).min(-1) vs. 44.8 +/- 5.5mL.kg(-1).min(-1) respectively). Contrarily, the oxygen equivalent from the glycolytic metabolism was not different between exercise modalities (p = 0.133; small effect size; running = 2.35 +/- 0.48 L and cycling = 2.18 +/- 0.58 L). Furthermore, the ``anaerobic{''} capacity was likely meaning fully (3.65 +/- 0.70 L) and very likely meaningfully (949.1 +/- 5.7 mL.kg(-1)) greater in running than cycling (3.81 +/- 0.71 L and 52.0 +/- 8.1 mL.kg(-1)). Additionally, the contribution of the phosphagen metabolism was higher (p = 0.001; large effect size) for running compared to cycling (1.6 +/- 0.3 L vs. 1.3 +/- 0.3 L respectively). Therefore, the ``anaerobic{''} capacity estimated by the sum of both oxygen equivalents from the glycolytic and phosphagen pathways during a supramaximal effort is influenced by exercise modality and is able to identify the difference in phosphagen metabolic contribution, based on the methodological conditions of this study. (AU)

• Processo FAPESP: 16/02683-6 - Influência da suplementação de beta-alanina associado ao treinamento intervalado de alta intensidade no desempenho de sprints repetidos.
• Beneficiário: Fabio Milioni
• Linha de fomento: Bolsas no Brasil - Doutorado
• 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
• Linha de fomento: Auxílio à Pesquisa - Regular
• 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
• Linha de fomento: Bolsas no Brasil - Mestrado