Cited by 299Heart Rate Variability and Autonomic ControlCardiovascular and exercise physiologyBlood Pressure and Hypertension Studies

Exercise training restores baroreflex sensitivity in never-treated hypertensive patients

Laterza, Mateus C., de Matos, Luciana D.N.J., Trombetta, Ivani C., Braga, Ana M.W., Roveda, Fabiana, Alves, Maria J.N.N., Krieger, Eduardo M., Negrão, Carlos E. +1 more·2007·Hypertension

Abstract

The effects of exercise training on baroreflex control of sympathetic nerve activity in human hypertension are unknown. We hypothesized that exercise training would improve baroreflex control of muscle sympathetic nerve activity (MSNA) and heart rate (HR) in patients with hypertension and that exercise training would reduce MSNA and blood pressure (BP) in hypertensive patients. Twenty never-treated hypertensive patients were randomly divided into 2 groups: exercise-trained (n=11; age: 46+/-2 years) and untrained (n=9; age: 42+/-2 years) patients. An age-matched normotensive exercise-trained group (n=12; age: 42+/-2 years) was also studied. Baroreflex control of MSNA (microneurography) and HR (ECG) was assessed by stepwise intravenous infusions of phenylephrine and sodium nitroprusside and analyzed by linear regression. BP was monitored on a beat-to-beat basis. Exercise training consisted of three 60-minute exercise sessions per week for 4 months. Under baseline conditions (before training), BP and MSNA were similar between hypertensive groups but significantly increased when compared with the normotensive group. Baroreflex control of MSNA and HR was similar between hypertensive groups but significantly decreased when compared with the normotensive group. In hypertensive patients, exercise training significantly reduced BP (P<0.01) and MSNA (P<0.01) levels and significantly increased baroreflex control of MSNA and HR during increases (P<0.01 and P<0.03, respectively) and decreases (P<0.01 and P<0.03, respectively) in BP. The baseline (preintervention) difference in baroreflex sensitivity between hypertensive patients and normotensive individuals was no longer observed after exercise training. No significant changes were found in untrained hypertensive patients. In conclusion, exercise training restores the baroreflex control of MSNA and HR in hypertensive patients. In addition, exercise training normalizes MSNA and decreases BP levels in these patients.

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Crossref · 10.1161/hypertensionaha.106.085548

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Authors
Laterza, M. C., de Matos, L. D. N. J., Trombetta, I. C., Braga, A. M. W., Roveda, F., Alves, M. J. N. N., Krieger, E. M., Negrão, C. E., & Rondon, M. U. P. B.
Affiliations
  • Universidade de São Paulo (BR)
  • From the Heart Institute (InCor) (M.C.L., L.D.N.J.d.M., I.C.T., A.M.W.B., F.R., M.J.N.N.A., E.M.K., C.E.N., M.U.P.B.R.), University of São Paulo Medical School, São Paulo, Brazil; and the School of Physical Education and Sports (C.E.N.), University of São Paulo, São Paulo, Brazil.
Venue
Hypertension
Published
2007-06
Volume
49
Issue
6
Pages
1298-1306
ISSN
  • 0194-911X (ISSN-L)
  • 1524-4563
OpenAlex
W2119216309
Cited by
299
References
64
Citations by year
2026: 6 · 2025: 14 · 2024: 15 · 2023: 14 · 2022: 17 · 2021: 17 · 2020: 17 · 2019: 14 · 2018: 20 · 2017: 30 · 2016: 17 · 2015: 16 · 2014: 14 · 2013: 19 · 2012: 20
FWCI
7.26
Type
journal article
Language
en
Open access
closed
Locations
  • Hypertension (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Health Sciences › Medicine › Cardiology and Cardiovascular Medicine › Heart Rate Variability and Autonomic Control
  • Health Sciences › Medicine › Complementary and alternative medicine › Cardiovascular and exercise physiology
  • Health Sciences › Medicine › Cardiology and Cardiovascular Medicine › Blood Pressure and Hypertension Studies
Keywords
exercise training, baroreflex sensitivity, muscle sympathetic nerve activity, heart rate, blood pressure, autonomic nervous system, phenylephrine, sodium nitroprusside, microneurography
MeSH terms
Adult, Blood Pressure, Exercise Therapy, Female, Heart Rate, Humans, Hypertension, Male, Middle Aged, Sympathetic Nervous System, Linear Models, Baroreflex, Muscle, Skeletal

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