Background: In this study, we aimed at comparing the effects of three different exercise modalities on post-exercise hypotension (PEH) in elderly hypertensive patients and at investigating whether PEH responses to the same exercises are affected by their training status.
Methods: Thirty-six male sedentary hypertensive patients over 60 years old, were included. They were divided into three groups each one corresponding to a different exercise modality, i.e., aerobic continuous exercise (ACE), high-intensive interval exercise (HIIE), and combined (aerobic and resistance) exercise (CE). PEH was assessed in each group by ambulatory blood pressure monitoring (ABPM) in two different conditions as follows: (1) sedentary status and (2) trained status, at the end of a 12 week of ACE training program. A cardiopulmonary test was performed before and at the end of the training program.
Results: In the sedentary status, 24-h and nocturnal systolic and diastolic blood pressure (BP) decreased in all groups as compared with top pre-exercise, with a greater but not significant reduction in the ACE and CE groups as compared with HIIE. ACE and HIIE groups presented a more sustained PEH than CE. In the trained status, 24-h and nighttime systolic and diastolic BP decreased significantly only after HIIE, but were unchanged as compared with pre-exercise in the ACE and CE groups.
Conclusions: ACE and CE produced greater PEH than HIIE in sedentary elderly hypertensive patients. However, after training, HIIE produced the greater and more sustained PEH. The training status appears to exert significant effects on PEH produced by different exercise modalities.
Keywords: exercise: exercise training; hypertension; post-exercise hypotension.