Acute hypotension after high-intensity interval exercise in metabolic syndrome patients
Morales Palomo, Felix Alberto
Ortega, Juan Fernando
G. Pallares, Jesus
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The purpose of this study was to compare the magnitude of post-exercise hypotension (PEH) after a bout of cycling exercise using high-intensity interval training (HIIT) in comparison to an isocaloric bout of traditional moderate-intensity continuous exercise (CE). After supine rest 14 obese (31 ± 1 kg · m − 2) middle-age (57 ± 2 y) metabolic syndrome patients (50 % hypertensive) underwent a bout of HIIT and CE in a random order and then returned to supine recovery for another 45 min. Exercise trials were isocaloric and compared to a no-exercise trial (CONT) of continuous supine rest for a total of 160 min. Before and after exercise we assessed blood pressure (BP), heart rate (HR), cardiac output (Q), systemic vascular resistance (SVR), intestinal temperature (TINT), forearm skin blood flow (SKBF) and percent dehydration. HIIT produced a larger reduction in systolic blood pressure than CE ( − 20 ± 6 vs. − 5 ± 3 mmHg in the hypertensive group and − 8 ± 3 vs. − 3 ± 2 mmHg in the normotensive group) and larger increases in resting HR (P < 0.005). Percent dehydration was larger after HIIT, and post-exercise TINT and SKBF increased only after HIIT (P < 0.05). Our findings suggest that HIIT is a superior exercise method to CE to transiently reduce blood pressure in MSyn subjects.