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Effects of interval training on risk markers for arrhythmic death: a randomized controlled trial.

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Title: Effects of interval training on risk markers for arrhythmic death: a randomized controlled trial.
Authors: Boidin, Maxime, Gayda, Mathieu, Henri, Christine, Hayami, Doug, Trachsel, Lukas D, Besnier, Florent, Lalongé, Julie, Juneau, Martin, Nigam, Anil
Source: Clinical Rehabilitation. Aug2019, Vol. 33 Issue 8, p1320-1330. 11p. 1 Diagram, 4 Charts, 1 Graph.
Subjects: Academic medical centers, Ambulatory electrocardiography, Analysis of variance, Arrhythmia, Cardiopulmonary system, Comparative studies, Exercise physiology, Exercise tests, Medical screening, Research funding, Statistics, Sample size (Statistics), Data analysis, Cooldown, Warmup, Randomized controlled trials, Pre-tests & post-tests, Repeated measures design, Oxygen consumption, Blind experiment, Exercise intensity, Data analysis software, Acute coronary syndrome, Descriptive statistics, Routine diagnostic tests, Ventricular arrhythmia, Computer-aided diagnosis, Mann Whitney U Test, High-intensity interval training, Disease complications, Disease risk factors
Geographic Terms: Canada
Abstract: Objective: To compare the effects of high-intensity interval training versus moderate-intensity continuous training on risk markers of arrhythmic death in patients who recently suffered from an acute coronary syndrome. Design: Double-blind (patient and evaluator) randomized controlled trial. Setting: Cardiovascular Prevention and Rehabilitation Centre (EPIC Centre) of the Montreal Heart Institute, Montreal, Canada. Subjects: A total of 43 patients were randomized following an acute coronary syndrome. Interventions: Patients were assigned to either high-intensity interval training (n = 18) or isocaloric moderate-intensity continuous training (n = 19), three times a week for a total of 36 sessions. Main measures: Heart rate recovery for 5 minutes, heart rate variability for 24 hours, occurrence of ventricular arrhythmias, and QT dispersion were measured before and after the 36 sessions of training. Results: Among the 43 patients randomized, 6 participants in the high-intensity interval training group stopped training for reasons unrelated to exercise training and were excluded from the analyses. Heart rate recovery improved solely in the high-intensity interval training group, particularly at the end of recovery period (p < 0.05). There were no differences in heart rate variability, occurrence of ventricular arrhythmias, or QT dispersion parameters between the groups at study end. Conclusion: Despite the lack of power to detect any large difference between the two interventions with respect to risk markers of arrhythmic death, high-intensity interval training appears safe and may be more effective at improving heart rate recovery relative to moderate-intensity continuous training in our patients following acute coronary syndrome. [ABSTRACT FROM AUTHOR]
Copyright of Clinical Rehabilitation is the property of Sage Publications Inc. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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  Data: Effects of interval training on risk markers for arrhythmic death: a randomized controlled trial.
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  Data: &lt;searchLink fieldCode=&quot;JN&quot; term=&quot;%22Clinical+Rehabilitation%22&quot;&gt;Clinical Rehabilitation&lt;/searchLink&gt;. Aug2019, Vol. 33 Issue 8, p1320-1330. 11p. 1 Diagram, 4 Charts, 1 Graph.
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  Data: Objective: To compare the effects of high-intensity interval training versus moderate-intensity continuous training on risk markers of arrhythmic death in patients who recently suffered from an acute coronary syndrome. Design: Double-blind (patient and evaluator) randomized controlled trial. Setting: Cardiovascular Prevention and Rehabilitation Centre (EPIC Centre) of the Montreal Heart Institute, Montreal, Canada. Subjects: A total of 43 patients were randomized following an acute coronary syndrome. Interventions: Patients were assigned to either high-intensity interval training (n = 18) or isocaloric moderate-intensity continuous training (n = 19), three times a week for a total of 36 sessions. Main measures: Heart rate recovery for 5 minutes, heart rate variability for 24 hours, occurrence of ventricular arrhythmias, and QT dispersion were measured before and after the 36 sessions of training. Results: Among the 43 patients randomized, 6 participants in the high-intensity interval training group stopped training for reasons unrelated to exercise training and were excluded from the analyses. Heart rate recovery improved solely in the high-intensity interval training group, particularly at the end of recovery period (p &lt; 0.05). There were no differences in heart rate variability, occurrence of ventricular arrhythmias, or QT dispersion parameters between the groups at study end. Conclusion: Despite the lack of power to detect any large difference between the two interventions with respect to risk markers of arrhythmic death, high-intensity interval training appears safe and may be more effective at improving heart rate recovery relative to moderate-intensity continuous training in our patients following acute coronary syndrome. [ABSTRACT FROM AUTHOR]
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  Data: &lt;i&gt;Copyright of Clinical Rehabilitation is the property of Sage Publications Inc. and its content may not be copied or emailed to multiple sites without the copyright holder&#39;s express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.&lt;/i&gt; (Copyright applies to all Abstracts.)
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        Value: 10.1177/0269215519840388
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        Text: English
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        Type: general
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      – SubjectFull: Cooldown
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      – SubjectFull: Warmup
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      – SubjectFull: High-intensity interval training
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      – SubjectFull: Disease complications
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      – SubjectFull: Disease risk factors
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      – SubjectFull: Canada
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      – TitleFull: Effects of interval training on risk markers for arrhythmic death: a randomized controlled trial.
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              M: 08
              Text: Aug2019
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