High-intensity vs. sham inspiratory muscle training in patients with chronic heart failure: a prospective randomized trial.

Aims: The purpose of this study was to evaluate the effectiveness, feasibility, and safety of a 4-week high-intensity inspiratory muscle training (hi-IMT) in patients with chronic heart failure (CHF).

Methods And Results: A double-blind randomized clinical trial was carried out in 22 patients with CHF. Participants were assigned to the hi-IMT or sham-IMT group.