Abstract
In patients with chronic heart failure (CHF) blood pressure (BP) control, represents a relevant target of management. This study evaluated the effect of different intensities exercise training on 24-h ambulatory BP profile and insulin resistance in patients with CHF. Thirty-six CHF patients with left ventricular ejection fraction <40 %, were randomized to high-intensity interval training (HIT) or moderate continuous training (MIT) for 12 weeks. HIT consisted in treadmill exercise at ~75–80 % of heart rate reserve (HRR), alternated with active pauses at 45–50 % of HRR. MIT consisted in continuous treadmill at ~45–60 % of HRR. Peak VO2 and anaerobic threshold increased significantly with both HIT and MIT, without significant differences between the two training programs. 24-h, systolic and diastolic BP decreased with both HIT and MIT. The same occurred for day-time and night-time systolic and diastolic BP. The decrease in day-time diastolic BP was slightly but significantly greater in HIT. Both HIT and MIT induced a significant decrease in fasting glucose and insulin, whereas HOMA-IR decreased significantly only after HIT. In patients with CHF exercise training reduces BP throughout the day, without substantial differences between moderate and more vigorous exercise intensity, with a small exception for day-time diastolic BP. HIT was more effective in improving insulin resistance.
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Iellamo, F., Caminiti, G., Sposato, B. et al. Effect of High-Intensity interval training versus moderate continuous training on 24-h blood pressure profile and insulin resistance in patients with chronic heart failure. Intern Emerg Med 9, 547–552 (2014). https://doi.org/10.1007/s11739-013-0980-4
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DOI: https://doi.org/10.1007/s11739-013-0980-4