Background: Regular physical activity is known to reduce arterial pressure (BP). In a previous investigation we could prove, that even a single bout of moderate- ...
Influence of a high-intensity interval training session on peripheral and central blood pressure at rest and during stress testing in healthy individuals
High intensity training and hemodynamics Ketelhut S1, Milatz F2, Heise W3, 4, Ketelhut RG3, 5 1
Martin-Luther-Universität Halle-Wittenberg, Halle, GERMANY Deutsches Rheumaforschungszentrum, Berlin, GERMANY 3 Charité Universitätsmedizin Berlin, Campus Mitte, Berlin, GERMANY 4 Evangesliscches Krankenhaus Königin Elisabeth Herzberge GmbH, Berlin, GERMANY 5 Medical Center Berlin, Berlin, GERMANY 2
Keywords: High intensity interval training, post-exercise hypotension, cold pressor test, stress testing, blood pressure after exercise, central blood pressure
Abstract Background: Regular physical activity is known to reduce arterial pressure (BP). In a previous investigation we could prove, that even a single bout of moderate-intensity continuous exercise (MICE) causes a prolonged BP reduction. Whether a high-intensity interval training (HIIT) has a favorable influence on BP, and therefore may be followed by a prolonged BP reduction should be examined based on blood pressure response after exercise and during a following stress test. Patients and Methods: In 39 healthy men (aged 34 ± 8 years, BMI 24 ± 2) peripheral and central BP were measured noninvasively at rest and at the end of a 2 minute cold pressor test (CPT) using Mobil-O-Graph (24 PWA monitor, IEM). Following a HIIT (6 x 1 minute with 98% of the previously determined maximum wattage, 4 minutes rest between intervals) BP was measured again throughout 60 minutes of rest and thereafter during a CPT. The results where compared with those before HIIT. Results: Similar to MICE, peripheral and central BPs were significantly (p0.001) and diastolic (p=0.008) pressures were established after HIIT. This was true for systolic (p=0.002) and diastolic (p=0.006) central BP as well. Despite there were no more significant differences between pressures at rest before and 60 minutes after exercise, increase in peripheral systolic pressure due to CPT was significantly lower after HIIT (p=0.019) when compared with BP during CPT before exercise. This was true for central systolic BP as well (p=0.017). Conclusion: HIIT leads to a BP reduction, which can still be detected until 45min after completion of the training. Even 60 minutes after exercise, pressures during a CPT showed a reduced augmentation indicating attenuated hemodynamic response to stress testing after HIIT.
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Table I: Subjects' characteristics Values are means ± SD for 39 subjects. ________________________________________________________ Table II: Blood pressure measurements pre-and post-exercise Values are means ± SD for 39 subjects. *P
