High-intensity interval training irrespective of its intensity improves markers of blood fluidity in hypertensive patients. (18th May 2020)

• Record Type: Journal Article
• Authors: Soltani, Mohammad; Aghaei Bahmanbeglou, Neda; Ahmadizad, Sajad
• Is Part Of: Clinical and experimental hypertension. Volume 42:Number 4(2020)
• Page Start: 309
• Page End: 314
• Publication Date: 2020-05-18
• Subjects: Interval training -- exercise intensity -- hypertension -- red blood cell -- blood viscosity; Hypertension -- Chemotherapy -- Periodicals; Hypotensive agents -- Periodicals; 616.132
• DOI: 10.1080/10641963.2019.1649687
• Languages: English
• ISSNs: 1064-1963

Abstract

ABSTRACT: Aim : The present study examined and compared the effects of two different HIIT (High-intensity interval training) protocols on markers of blood fluidity in hypertensive patients. Methods : Thirty hypertensive (stage 1, systolic BP >140 and diastolic BP>90 mmHg) patients (age, 47.96 ± 3.20 yrs), were randomly allocated to short-duration HIIT (SDHIIT, n = 10), long-duration HIIT (LDHIIT, n = 10), and control (n = 10) groups. After 2 weeks of continuous mild training, patients in SDHIIT group performed 8 weeks of HIIT included 27 min HIIT that encompassed 27 repetitions of 30 s activity at 80%-100% of VO2 peak interspersed by 30 s passive/active (10%-20% of VO2 peak) recovery, while, patients in LDHIIT group performed 8 weeks of HIIT (32 min per session) included 4 repetitions of 4 min activity at 75%-90% of VO2 peak interspersed by 4 min passive/active (15%-30% of VO2 peak) recovery. Two blood samples were taken before and after training and were analyzed for hemorheological variables. Results : Significant ( P < .05) reductions in systolic blood pressure (SBP), blood and plasma viscosity, fibrinogen concentration and red blood cell (RBC) aggregation (8–12%) were found following two training protocols ( P < .05), though, the differences between adaptations were not statistically significant ( P > .05). In addition, HIIT protocols increased RBC deformability significantly ( P < .05), with no significant differences being observed between two protocols. Conclusion : It is concluded that HIIT training reduces SBP and markers of blood fluidity in patients with stage 1 hypertension irrespective of the HIIT intensity and duration. Therefore, this type of exercise training could be prescribed for improving the blood fluidity markers in hypertensive patients.