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Clinical Trial Summary

Purpose: Exaggerated sympathetic nervous system (SNS) activity associated with low heart rate variability (HRV) is considered as a trigger of cardiac arrhythmias and sudden death. Regular exercise training is efficient to improve autonomic balance. In 2013, the investigators published that a single session of an optimized short-high intensity interval exercise with passive recovery (HIIT) protocol was efficient in chronic heart failure (CHF) patients for enhancing vagal tone and to decrease arrhythmias in the 24-h post exercise period when compared to a single session of moderate intensity continuous exercise (MICT). Nevertheless the effects of HIIT training performed on several weeks have never yet been studied on the parameters described by Coumel's triangle (the arrhythmogenic substrate, the trigger factor as premature ventricular contraction and the modulation factors of which the most common is the autonomic nervous system). The aim of this study was to verify the superiority of HIIT to enhance parasympathetic activity, cardiorespiratory fitness and cardiac function when compared to MICT in a short and intense cardiac rehabilitation program.


Clinical Trial Description

Before and after the Rehabilitation Program (RP), all patients underwent a 24-hour ECG recording, an echocardiography, a cardiopulmonary exercise test.

The RP consisted of 2 types of exercise training according to the randomization:

1. a short-high intensity interval exercise with passive recovery

2. a classical moderate and continuous exercise training at 60% of peak power output

The RP lasted 4 weeks. ;


Study Design


Related Conditions & MeSH terms


NCT number NCT03603743
Study type Interventional
Source Cardiovascular and Pulmonary Rehabilitation Center of Saint Orens
Contact
Status Completed
Phase N/A
Start date May 7, 2015
Completion date October 13, 2017

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