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

Authors
  • Cordeiro, Ricardo1, 2
  • Mira, Pedro Augusto3, 4
  • Monteiro, Walace1, 2
  • Cunha, Felipe2
  • Laterza, Mateus C.4
  • Pescatello, Linda S.5
  • Martinez, Daniel G.4
  • Farinatti, Paulo1, 2
  • 1 Programa de Graduacao em Ciencias da Atividade Fisica, Universidade Salgado de Oliveira, Niteroi, RJ, BR
  • 2 Laboratorio de Atividade Fisica e Promocao da Saude (LABSAU), Instituto de Educacao Fisica e Desportos, Universidade do Estado do Rio de Janeiro, Rio de Janeiro, RJ, BR
  • 3 Departamento de Fisiologia e Farmacologia, Laboratorio de Ciencia do Exercicio, Universidade Federal Fluminense, Niteroi, RJ, BR
  • 4 Unidade de Investigacao Cardiovascular e Fisiologia do Exercicio, Hospital Universitario e Faculdade de Educacao Fisica e Desportos, Universidade Federal de Juiz de Fora, Juiz de Fora, MG, BR
  • 5 Department of Kinesiology, University of Connecticut, CT, USA
Type
Published Article
Journal
Clinics
Publisher
Faculdade de Medicina / USP
Publication Date
Jan 11, 2021
Volume
76
Identifiers
DOI: 10.6061/clinics/2021/e1971
PMID: 33503175
PMCID: PMC7798120
Source
PubMed Central
Keywords
Disciplines
  • Original Article
License
Green

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 ≥60 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 (Δ=−14.2±13.1 mmHg, p =0.0001), DBP (Δ=−5.2±8.2 mmHg, p = 0.04), Q (Δ=−2.2±1.5 L/min, p =0.0001), and BRS (Δ=−3.5±2.6 ms/mmHg; p =0.05) decreased after CEX as compared with the CONT session. By contrast, the HR increased (Δ=9.4±7.2 bpm, p <0.0001), and SVR remained stable throughout the postexercise period as compared with the CONT session (Δ=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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