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Exercise effects on autonomic/vascular systems in coronary trained patients: A pilot study
Session:
Posters 2 - Écran 03 - Ciência Básica
Speaker:
Vitor G. Angarten
Congress:
CPC 2018
Topic:
J. Preventive Cardiology
Theme:
29. Rehabilitation and Sports Cardiology
Subtheme:
29.2 Cardiovascular Rehabilitation
Session Type:
Posters
FP Number:
---
Authors:
Vitor G. Angarten; Rita Pinto; Vanessa Santos; Xavier Melo; Paula Sousa ; Jose Machado Rodrigues; Helena Santa Clara
Abstract
<h1>INTRODUCTION</h1> <p>Cardiac autonomic imbalance is a common complication in coronary artery diseases (CAD) and has been considered one of the major elements involved in the regulation of vascular properties. Exercise training is an important component of continuum care for CAD patients. Long-term programs have vacation periods that may use alternative training methods, such as home-based training (HbT), to maintain the health benefits. Thus, autonomic function and arterial stiffness may serve as important physiological targets for exercise interventions.</p> <h1>PURPOSE</h1> <p>In this pilot study, we examined whether a short-term HbT (aerobic exercise) could interfere on autonomic control and arterial stiffness in trained patients with CAD.</p> <h1>METHODS</h1> <p>Thirteen trained patients with CAD (10 males; 63±8.24 years old) enrolled a long-term supervised cardiac rehabilitation program (combined guidelines exercise training) setting for at least 6 months. Cardiopulmonary exercise test, Pulse Wave Velocity (PWV) and Heart Rate Variability (HRV) were evaluated at baseline and following 6 weeks of HbT (3d/week, 30min walking at ventilatory threshold 1). The heart rate recovery at 1 min (HRR1´) was assessed after CPET (no-load active recovery).</p> <h1>RESULTS</h1> <p>Low/High Frequency Ratio of HRV decreased significantly with the HbT (2.524±1.685 vs 1.582±1.067 ms<sup>2</sup>; p=0.003). However, no significant differences were observed in peak oxygen consumption (20.76±5.25 vs 21.44±6.23 ml/kg/min), load peak (135.46±41.25 vs 132.36±42.44 W), aortic PWV (8.20±1.29 vs 7.98±1.70 m/s), augmentation index (19.1±11.03 vs 15.46±8.24%), Root Mean Square of the Successive Differences (19.29±9.63 vs 20.10±11.36 ms), approximate entropy (0.821±0.162 vs 0.867±0.072) and HRR1´ (17.78± 5.36 vs 18.71±10.82 bpm).</p> <h1>CONCLUSION</h1> <p>The major clinical relevance of short-term aerobic exercise HbT has positive effects on cardiac autonomic balance in patients with CAD and maintain the aerobic fitness and arterial stiffness. Thus, this kind of training should be encouraged to be performed during transition periods. </p>
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