Postexercise Hypotension Is Delayed in Men With Obesity and Hypertension
FRONTIERS IN PHYSIOLOGY(2022)
Abstract
BackgroundPostexercise hypotension (PEH) can play a major role in the daily blood pressure management among individuals with hypertension. However, there are limited data on PEH in persons with obesity and hypertension, and no PEH data in this population beyond 90 min postexercise. PurposeThe purpose of this study was to determine if PEH could be elicited in men with obesity and hypertension during a 4-h postexercise measurement period. MethodsSeven men [age = 28 +/- 4 years; body mass index = 34.6 +/- 4.8 kg/m(2); brachial systolic blood pressure (SBP): 138 +/- 4 mmHg; brachial diastolic BP (DBP): 80 +/- 5 mmHg; central SBP: 125 +/- 4 mmHg; central DBP: 81 +/- 8 mmHg] performed two exercise sessions on a cycle ergometer, each on a separate day, for 45 min at similar to 65% VO2max. One exercise session was performed at a cadence of 45 RPM and one at 90 RPM. Blood pressure was monitored with a SunTech Oscar2 ambulatory blood pressure monitor for 4 h after both exercise sessions, and during a time-matched control condition. ResultsBoth brachial and central SBP were not changed during the first h postexercise but were reduced by similar to 5-11 mmHg between 2 and 4 h postexercise (p < 0.05) after both exercise sessions. Brachial and central DBP were elevated by similar to 5 mmHg at 1 h postexercise (p < 0.05) but were similar to 2-3 mmHg lower compared to control at 4 h postexercise, and similar to 2-4 mmHg lower at 3 h postexercise compared to baseline. Mean arterial pressure (MAP) was elevated compared to control at 1 h postexercise after both exercise sessions, but was similar to 2-3 mmHg lower compared to control at 2, 3, and 4 h postexercise, and similar to 4-7 mmHg lower at 3 h postexercise compared to baseline. ConclusionDespite the small sample size and preliminary nature of our results, we conclude that PEH is delayed in men with obesity and hypertension, but the magnitude and duration of PEH up to 4 h postexercise is similar to that reported in the literature for men without obesity and hypertension. The PEH is most pronounced for brachial and central SBP and MAP. The virtually identical pattern of PEH after both exercise trials indicates that the delayed PEH is a reproducible finding in men with obesity and hypertension.
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Key words
blood pressure, exercise, body mass index, obese, overweight
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