1. Postgraduate Studies Program in Pulmonology; School of Medicine; Federal University of Rio Grande do Sul; Porto Alegre Brazil
2. Cardiology; School of Medicine; Federal University of Rio Grande do Sul; Porto Alegre Brazil
3. Exercise Pathophysiology Research Laboratory; Hospital de Clínicas de Porto Alegre; Porto Alegre RS Brazil
4. Department of Cardiology; Hospital de Clínicas de Porto Alegre; Brazil
5. Federal University of Health Sciences of Porto Alegre and Feevale University; Porto Alegre Brazil
6. Respiratory Division; Hospital de Clínicas de Porto Alegre; Porto Alegre RS Brazil