Rakobowchuk, M, Harris, E, Taylor, A et al. (2 more authors) (2013) Moderate and heavy metabolic stress interval training improve arterial stiffness and heart rate dynamics in humans. European Journal of Applied Physiology, 113 (4). 839 - 849. ISSN 1439-6319
Abstract
Traditional continuous aerobic exercise training attenuates age-related increases of arterial stiffness, however, training studies have not determined whether metabolic stress impacts these favourable effects. Twenty untrained healthy participants (n = 11 heavy metabolic stress interval training, n = 9 moderate metabolic stress interval training) completed 6 weeks of moderate or heavy intensity interval training matched for total work and exercise duration. Carotid artery stiffness, blood pressure contour analysis, and linear and non-linear heart rate variability were assessed before and following training. Overall, carotid arterial stiffness was reduced (p < 0.01), but metabolic stress-specific alterations were not apparent. There was a trend for increased absolute high-frequency (HF) power (p = 0.10) whereas both absolute low-frequency (LF) power (p = 0.05) and overall power (p = 0.02) were increased to a similar degree following both training programmes. Non-linear heart rate dynamics such as detrended fluctuation analysis [Formula: see text] also improved (p > 0.05). This study demonstrates the effectiveness of interval training at improving arterial stiffness and autonomic function, however, the metabolic stress was not a mediator of this effect. In addition, these changes were also independent of improvements in aerobic capacity, which were only induced by training that involved a high metabolic stress.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | (c) The Author(s) 2012. This article is published with open access at Springerlink.com. This article is distributed under the terms of the Creative Commons Attribution License which permits any use, distribution, and reproduction in any medium, provided the original author(s) and the source are credited. |
Keywords: | Adult; Analysis of Variance; Autonomic Nervous System; Cardiovascular Diseases; Carotid Arteries; Carotid Intima-Media Thickness; Electrocardiography; England; Exercise; Female; Heart Rate; Humans; Linear Models; Male; Nonlinear Dynamics; Oxygen Consumption; Predictive Value of Tests; Pulse Wave Analysis; Stress, Physiological; Time Factors; Treatment Outcome; Vascular Stiffness; Young Adult |
Dates: |
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Institution: | The University of Leeds |
Academic Units: | The University of Leeds > Faculty of Biological Sciences (Leeds) The University of Leeds > Faculty of Medicine and Health (Leeds) > School of Medicine (Leeds) > Leeds Institute of Genetics, Health and Therapeutics (LIGHT) > Academic Unit of Cardiovascular Medicine (Leeds) The University of Leeds > Faculty of Medicine and Health (Leeds) > School of Medicine (Leeds) > Institute of Rheumatology & Musculoskeletal Medicine (LIRMM) (Leeds) > Experimental Musculoskeletal Medicine (Leeds) |
Depositing User: | Symplectic Publications |
Date Deposited: | 10 Nov 2015 10:47 |
Last Modified: | 10 Nov 2015 10:47 |
Published Version: | http://dx.doi.org/10.1007/s00421-012-2486-6 |
Status: | Published |
Publisher: | Springer |
Identification Number: | 10.1007/s00421-012-2486-6 |
Related URLs: | |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:86169 |