Prolonged heart rate recovery time after 6-minute walk test is an independent risk factor for cardiac events in heart failure: A prospective cohort study

Geisa Nascimento de Andrade, Tânia Rodrigues, Júlio Yoshio Takada, Lays Magalhães Braga, Iracema Ioco Kikuchi Umeda, Juliana Araújo Nascimento, Horacio Gomes Pereira-Filho, César Grupi, Vera Maria Cury Salemi, W. Jacob-Filho, Lawrence P. Cahalin, Antônio de Pádua Mansur, Edimar Alcides Bocchi, Naomi Kondo Nakagawa