This study aimed to investigate the impact of 12 weeks of high-intensity interval training (HIIT) on hemodynamic variables at rest and during exercise in patients with obstructive sleep apnoea. Twenty-six obese adults with moderate-to-severe OSA (AHI = 42 ± 22.9 e/h) were randomly assigned to HIIT or a control group. Sleep parameters, ambulatorial, aortic, and during-exercise SBP and DBP were assessed at baseline and after 12 weeks. Generalized estimated equations assessed differences between groups over time. When compared with control group, HIIT reduced AHI (17.1 ± 6.2; e/h, P < 0.01), SBP nighttime (10.2 ± 5.0 mmHg; P = 0.034), DBP nighttime (7.9 ± 4.0 mmHg; P = 0.038), DBP aortic (5.5 ± 2.9 mmHg; P = 0.048), and SBP max (29.6 ± 11.8 mmHg; P = 0.045). In patients with OSA, 12 weeks of HIIT decreases sleep apnoea severity and blood pressure in rest and during exercise.
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