The prognostic value of the cardiorespiratory optimal point during submaximal exercise testing in heart failure João Ferreira Reis, António Gonçalves, Pedro Brás, Rita Moreira, Tiago Pereira-da-Silva, Ana Teresa Timóteo, Rui Soares, Rui Cruz Ferreira

Cardiorespiratory optimal point during exercise testing as a predictor of all-cause mortality Plínio S. Ramos, Claudio Gil S. Araújo

Prognostic value of a new cardiopulmonary exercise testing parameter in chronic heart failure: oxygen uptake efficiency at peak exercise — comparison with oxygen uptake efficiency slope Alexandra Toste, Rui Soares, Joana Feliciano, Valeska Andreozzi, Sofia Silva, Ana Abreu, Ruben Ramos, Ninel Santos, Lurdes Ferreira, Rui Cruz Ferreira