1 Graduate Program in Cardiology and Cardiovascular Sciences, School of Medicine, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brazil.
2 Exercise Cardiology Research Group (CardioEx), Universidade Federal do Rio Grande do Sul, Hospital de Clínicas de Porto Alegre, Porto Alegre, RS, Brazil.
3 Science, Health and Performance Department, Grêmio Foot-Ball Porto Alegrense, Porto Alegre, RS, Brazil.
4 Stanford University, Department of Cardiovascular Medicine, Palo Alto, CA, United States of America.
5 Universidade Federal do Rio Grande do Sul, Internal Medicine Department, Porto Alegre, RS, Brazil.