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In patients with heart failure (HF), peak oxygen consumption (peak VO(2)), the relationship between minute ventilation and carbon dioxide production (VE/VCO(2) slope) and heart rate recovery (HRR) are established prognostic predictors. However, treadmill exercise has been shown to elicit higher peak VO(2) values than bicycle exercise. We sought to assess whether the VE/VCO(2) slope and HRR in HF also depend on the exercise mode.

Cardiopulmonary Exercise Testing in Mild Heart Failure: Impact of the Mode of Exercise on Established Prognostic Predictors