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Postexercise hypotension is not sustained in normal and hypertensive humans
V K Somers1, J Conway, A Coats
1Cardiac Department, John Radcliffe Hospital, Headington, Oxford.
Hypertension (Dallas, Tex. : 1979)
|August 1, 1991
Summary
A single exercise session temporarily lowers blood pressure for up to an hour. However, this post-exercise hypotension is not sustained throughout the day in either hypertensive or normotensive individuals.
Area of Science:
- Exercise physiology
- Cardiovascular health
Background:
- Blood pressure reduction following exercise is well-documented.
- The duration of this hypotensive effect after a single exercise bout remains unclear.
- Sustained hypotension post-exercise could benefit mild hypertension treatment.
Purpose of the Study:
- To determine the duration of blood pressure reduction after a single exercise session.
- To assess if exercise-induced hypotension is sustained in mild hypertensive and normotensive individuals.
Main Methods:
- 24 subjects (12 mild hypertensive, 12 normotensive) underwent graded maximal bicycle exercise.
- Laboratory blood pressure was measured pre- and post-exercise (1 hour).
- Home blood pressure was monitored for 8-12 hours post-exercise and compared to a control day.
Main Results:
- Blood pressure significantly decreased 30 minutes post-exercise in both groups (hypertensive: 142/93 to 124/79 mmHg; normotensive: 117/70 to 109/62 mmHg).
- Home blood pressure measurements showed no significant difference between exercise and control days for either group.
- The immediate post-exercise blood pressure reduction was not sustained throughout the day.
Conclusions:
- A single bout of exercise induces a short-term (approx. 1 hour) reduction in blood pressure.
- This exercise-induced hypotension is transient and not sustained for longer durations.
- The findings suggest limited benefit for treating mild hypertension with single exercise sessions based on sustained hypotension.