Morning vs Evening Aerobic Training Effects on Blood Pressure in Treated Hypertension

Introduction The acute blood pressure (BP) decrease is greater after evening than morning exercise, suggesting that evening training may have a greater hypotensive effect. Objective To compare the hypotensive effect of aerobic training performed in the morning versus evening in treated hypertensives. Methods Fifty treated hypertensive men were randomly allocated to 3 groups: morning training (MT); evening training (ET); and control (C). Training groups cycled for 45min at moderate-intensity (progressing from the heart rate of the anaerobic threshold to 10% below the heart rate of the respiratory compensation point), while C stretched for 30 min. Interventions were conducted 3 times/week for 10 weeks. Clinic and ambulatory BP, hemodynamic, and autonomic mechanisms were evaluated before and after the interventions. Clinic assessments were performed in the morning (7-9a.m.) and evening (6-8p.m.). Between-within ANOVAs were used (P≤0.05). Results Only ET decreased clinic systolic BP differently from C and MT (morning assessment -5±6 mmHg and evening assessment -8±7 mmHg, P

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