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Postexercise blood pressure reduction in elderly hypertensive patients
Maria Urbana P Brandão Rondon1, Maria Janieire N N Alves, Ana Maria F W Braga
1Unit of Cardiovascular Rehabilitation and Exercise Physiology, Heart Institute (InCor), University of São Paulo Medical School, São Paulo, Brazil.
Journal of the American College of Cardiology
|February 19, 2002
Summary
Low-intensity exercise significantly reduces blood pressure in elderly hypertensive patients for up to 22 hours. This effect is linked to decreased stroke volume and left ventricular end-diastolic volume, showing clinical relevance.
Area of Science:
- Cardiovascular Physiology
- Exercise Science
- Geriatric Medicine
Background:
- Mechanisms of postexercise blood pressure reduction are not fully understood.
- The clinical relevance of sustained blood pressure reduction in elderly hypertensive patients after exercise is unclear.
Purpose of the Study:
- To investigate the impact of hemodynamic and left ventricular function on short-term postexercise blood pressure reduction in elderly hypertensive patients.
- To assess the 22-hour ambulatory blood pressure effects following exercise in elderly hypertensive patients.
Main Methods:
- Studied 24 elderly hypertensive patients and 18 age-matched controls.
- Measured cardiac output, blood pressure, and left ventricular function at rest and post-exercise.
- Utilized 45-minute low-intensity bicycle exercise (50% maximal oxygen uptake) and 22-hour ambulatory blood pressure monitoring.
Main Results:
- Exercise induced significant reductions in blood pressure, cardiac output, stroke volume, and left ventricular end-diastolic volume in hypertensive patients.
- A significant 22-hour reduction in systolic, mean, and diastolic blood pressure was observed during both daytime and nighttime.
- Short-term postexercise hypotension was associated with decreased stroke volume and left ventricular end-diastolic volume.
Conclusions:
- Short-term postexercise blood pressure reduction in elderly hypertensive patients is associated with decreased stroke volume and left ventricular end-diastolic volume.
- The 22-hour postexercise blood pressure reduction highlights the clinical significance of low-intensity exercise for this population.