Hemodynamics and cardiac autonomic modulation after an acute concurrent exercise circuit in older individuals with pre- to established hypertension

Authors

  • Ricardo Cordeiro Universidade Salgado de Oliveira. Programa de Graduação em Ciências da Atividade Fisica
  • Pedro Augusto Mira Universidade Federal Fluminense. Departamento de Fisiologia e Farmacologia
  • Walace Monteiro Universidade Salgado de Oliveira. Programa de Graduação em Ciências da Atividade Fisica
  • Felipe Cunha Universidade do Estado do Rio de Janeiro. Instituto de Educacao Fisica e Desportos
  • Mateus C. Laterza Universidade Federal de Juiz de Fora. Hospital Universitario e Faculdade de Educacao Fisica e Desportos. Unidade de Investigação Cardiovascular e Fisiologia do Exercicio
  • Linda S. Pescatello University of Connecticut. Department of Kinesiology
  • Daniel G. Martinez Universidade Federal de Juiz de Fora. Hospital Universitario e Faculdade de Educacao Fisica e Desportos. Unidade de Investigação Cardiovascular e Fisiologia do Exercicio
  • Paulo Farinatti Universidade Salgado de Oliveira. Programa de Graduação em Ciências da Atividade Fisica

DOI:

https://doi.org/10.6061/clinics/2021/e1971

Keywords:

Blood Pressure, Cardiac Output, Systemic Vascular Resistance, Autonomic Nervous System, Elderly

Abstract

OBJECTIVES: Few studies have investigated whether post-exercise hypotension (PEH) after concurrent exercise (CEX) is related to changes in cardiac output (Q) and systemic vascular resistance (SVR) in older individuals. We tested whether PEH after a single bout of CEX circuits performed in open-access facilities at the Third Age Academies (TAA) in Rio de Janeiro City (Brazil) would be concomitant with decreased Q and SVR in individuals aged X60 years with prehypertension. Moreover, we assessed autonomic modulation as a potential mechanism underlying PEH. METHODS: Fourteen individuals (age, 65.8±0.9 y; systolic/diastolic blood pressure [SBP/DBP], 132.4±12.1/72.8± 10.8 mmHg; with half of the patients taking antihypertensive medications) had their blood pressure (BP), heart rate (HR), Q, SVR, HR variability (HRV), and spontaneous baroreflex sensitivity (BRS) recorded before and 50 min after CEX (40-min circuit, including seven stations of alternate aerobic/resistance exercises at 60–70% HR reserve) and non-exercise control (CONT) sessions. The study protocol was registered in a World Health Organization-accredited office (Trial registration RBR-7BWVPJ). RESULTS: SBP (D= 14.2±13.1 mmHg, p=0.0001), DBP (D= 5.2±8.2 mmHg, p= 0.04), Q (D= 2.2±1.5 L/min, p=0.0001), and BRS (D= 3.5±2.6 ms/mmHg; p=0.05) decreased after CEX as compared with the CONT session. By contrast, the HR increased (D=9.4±7.2 bpm, po0.0001), and SVR remained stable throughout the postexercise period as compared with the CONT session (D=0.10±0.22 AU, p=0.14). We found no significant difference between the CEX and CONT with respect to the HRV indexes reflecting autonomic modulation. CONCLUSION: CEX induced PEH in the older individuals with prehypertension status. At least in the first 50 min, PEH occurred parallel to the decreased Q and increased HR, while SVR was not different. The changes in autonomic outflow appeared to be unrelated to the acute cardiac and hemodynamic responses.

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Published

2021-11-09

Issue

Vol. 76 (2021)

Section

Original Articles

How to Cite

Hemodynamics and cardiac autonomic modulation after an acute concurrent exercise circuit in older individuals with pre- to established hypertension. (2021). Clinics, 76, e1971. https://doi.org/10.6061/clinics/2021/e1971