Post-Exercise Hypotension After Aquatic Exercise in Older Women With Hypertension: A Randomized Crossover Clinical Trial.

Post-Exercise Hypotension After Aquatic Exercise in Older Women With Hypertension: A Randomized Crossover Clinical Trial.

Am J Hypertens. 2017 Sep 07;:

Authors: Cunha RM, Costa AM, Silva CNF, Rolim TI, Pescatello LS, Lehnen AM

Abstract
Background: Hypertension can be prevented and modified with lifestyle interventions that include regular exercise. Aquatic exercise is widely recommended for older adults for a variety of health benefits, but few studies have assessed the immediate ambulatory blood pressure (BP) response to aquatic exercise, a response termed post-exercise hypotension (PEH). Thus, we assessed PEH after a session of aquatic exercise in physically active, older women with hypertension.
Methods: Twenty-four women 70.0±3.9 years with a resting systolic (SBP)/diastolic (DBP) BP of 124.0/72.3 mmHg and body mass index (BMI) of 29.8±4.1 kg/m 2 were randomly assigned to participate in a 45 min session of moderate intensity, water-based exercise (WATER) and a 45 min land control session (CONTROL). All experimental sessions started at 9 am sharply with 7 days between them. Subjects left the experiments wearing an ambulatory BP monitor for the next 21 hr.
Results: SBP was lower by 5.1±1.0 mmHg after WATER than CONTROL over 21 hr (p<0.001), over awake hours by 5.7±1.1 mmHg (p<0.001), and sleep hours by 4.5±0.4 mmHg (p=0.004). DBP was lower following WATER compared to CONTROL: 1.2±0.3 mmHg over 21 hours (p=0.043); 0.9±0.6 mmHg over awake hours (p=0.101); and 1.4±0.9 mmHg over sleep hours (p=0.039).
Conclusions: Aquatic exercise elicited PEH (~5 mmHg) over 21 hr, BP reductions that are comparable in magnitude to land aerobic exercise. The immediate antihypertensive benefits of acute aquatic exercise should continue to be explored in future studies.

PMID: 28985278 [PubMed - as supplied by publisher]

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