Cardiovascular and autonomic responses after exercise sessions with different intensities and durations

Authors

  • Juliano Casonatto Universidade Norte do Paraná; Centro de Ciências Biológicas e da Saúde; Departamento de Educação Física
  • Taís Tinucci Universidade de São Paulo; Escola de Educação Física e Esportes; Departamento de Biodinâmica do Movimento do Corpo Humano
  • Antônio Carlos Dourado Universidade Estadual de Londrina; Centro de Educação Física e Esportes
  • Marcos Polito Universidade Estadual de Londrina; Centro de Educação Física e Esportes

DOI:

https://doi.org/10.1590/S1807-59322011000300016

Keywords:

Blood Pressure, Heart Rate Variability, Exercise, Post-Exercise Hypotension, Cardiovascular Physiology

Abstract

BACKGROUND: Several studies have reported the phenomenon of post-exercise hypotension. However, the factors that cause this drop in blood pressure after a single exercise session are still unknown. OBJECTIVE: To investigate the effects of aerobic exercise on the acute blood pressure response and to investigate the indicators of autonomic activity after exercise. METHODS: Ten male subjects (aged 25 ± 1 years) underwent four experimental exercise sessions and a control session on a cycle ergometer. The blood pressure and heart rate variability of each subject were measured at rest and at 60 min after the end of the sessions. RESULTS: Post-exercise hypotension was not observed in any experimental sessions (P > 0.05). The index of parasympathetic neural activity, the RMSSD, only remained lower than that during the pre-exercise session after the high-intensity session (Δ = -19 ± 3.7 for 15-20 min post-exercise). In addition, this value varied significantly (P < 0.05) between the high- and low-intensity sessions (Δ = -30.7 ± 4.0 for the high intensity session, and Δ = -9.9 ± 2.5 for the low intensity session). CONCLUSION: The present study did not find a reduction in blood pressure after exercise in normotensive, physically active young adults. However, the measurements of the indicators of autonomic neural activity revealed that in exercise of greater intensity the parasympathetic recovery tends to be slower and that sympathetic withdrawal can apparently compensate for this delay in recovery.

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Published

2011-01-01

Issue

Section

Clinical Sciences

How to Cite

Casonatto, J., Tinucci, T., Dourado, A. C., & Polito, M. (2011). Cardiovascular and autonomic responses after exercise sessions with different intensities and durations . Clinics, 66(3), 453-458. https://doi.org/10.1590/S1807-59322011000300016