1. Exercise Pathophysiology Research Laboratory, Hospital de Clínicas de Porto Alegre, Porto Alegre, Brazil
2. Post-Graduate Program in Health Science, Cardiology and Cardiovascular Sciences, Federal University of Rio Grande do Sul, Porto Alegre, Brazil
3. Cardiology Division, Hospital de Clínicas de Porto Alegre, Porto Alegre, Brazil
4. Department of Internal Medicine, Faculty of Medicine, Federal University of Rio Grande do Sul, Porto Alegre, Brazil
5. Cardiology Division, Research Center of University of Montreal Hospital Centre, Montreal, Canada