Physiological Acute Response to High-Intensity Intermittent and Moderate-Intensity Continuous 5 km Running Performance: Implications for Training Prescription

Autor(es)

Cabral-Santos, Carolina ; Gerosa-Neto, Jose ; Inoue, Daniela S. ; Rossi, Fabricio E. ; Cholewa, Jason M. ; Campos, Eduardo Z. ; Panissa, Valeria L. G. ; Lira, Fabio S.

• Tipo de documento: Artigo Científico
• Fonte: Journal of Human Kinetics; v. 56, n. 1, p. 127-137, FEB 2017.
• Citações Web of Science: 3

Resumo

The aim of this study was to investigate the physiological responses to moderate-intensity continuous and high-intensity intermittent exercise. Twelve physically active male subjects were recruited and completed a 5-km run on a treadmill in two experimental sessions in randomized order: continuously (70% sVO(2max)) and intermittently (1: 1 min at sVO2max). Oxygen uptake, excess post-exercise oxygen consumption, lactate concentration, heart rate and rating of perceived exertion data were recorded during and after each session. The lactate levels exhibited higher values immediately post-exercise than at rest (High-Intensity: 1.43 +/- 0.25 to 7.36 +/- 2.78; Moderate-Intensity: 1.64 +/- 1.01 to 4.05 +/- 1.52 mmol.L-1, p = 0.0004), but High-Intensity promoted higher values (p = 0.001) than Moderate-Intensity. There was a difference across time on oxygen uptake at all moments tested in both groups (High-Intensity: 100.19 +/- 8.15L; Moderate-Intensity: 88.35 +/- 11.46, p < 0.001). Both exercise conditions promoted increases in excess post-exercise oxygen consumption (High-Intensity: 6.61 +/- 1.85 L; Moderate-Intensity: 5.32 +/- 2.39 L, p < 0.005), but higher values were observed in the High-Intensity exercise protocol. High-Intensity was more effective at modifying the heart rate and rating of perceived exertion (High-Intensity: 183 +/- 12.54 and 19; Moderate-Intensity: 172 +/- 8.5 and 16, respectively, p < 0.05). In conclusion, over the same distance, Moderate-Intensity and High-Intensity exercise exhibited different lactate concentrations, heart rate and rating of perceived exertion. As expected, the metabolic contribution also differed, and High-Intensity induced higher energy expenditure, however, the total duration of the session may have to be taken into account. Moreover, when following moderate-intensity training, the percentage of sVO2max and the anaerobic threshold might influence exercise and training responses. (AU)

• Processo FAPESP: 13/25310-2 - Avaliação da resposta imuno-metabólica em células sanguíneas em indivíduos obesos: papel do exercício físico e do PPAR-gama
• Beneficiário: Fábio Santos de Lira
• Modalidade de apoio: Auxílio à Pesquisa - Regular