Inspiratory Muscle Training in Patients With Heart Failure and Inspiratory Muscle Weakness
A Randomized Trial
Pedro Dall'Ago, PT, ScD*, ,
Gaspar R.S. Chiappa, PT, MSc ,
Henrique Guths, PT, MSc ,
Ricardo Stein, MD, ScD and
Jorge P. Ribeiro, MD, ScD , ,*
* Department of Physiological Sciences, Fundação Faculdade Federal de Ciências Médicas de Porto Alegre, Porto Alegre, Brazil
School of Physical Therapy, UNILASALLE, Canoas, Brazil
Cardiology Division, Hospital de Clínicas de Porto Alegre, Porto Alegre, Brazil
Department of Medicine, Faculty of Medicine, UFRGS, Porto Alegre, Brazil

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Figure 1 Weekly values of maximal inspiratory pressure (PImax, mean ± SD) for the placebo-inspiratory muscle training group (P-IMT) and for the inspiratory muscle training group (IMT). After 12 weeks in the program, all training was stopped, and 11 patients from each group were re-evaluated at 48 weeks. *Two-way ANOVA for repeated measures: p < 0.01 for group, training, and interaction effects. Significantly (p < 0.05) different from baseline evaluation by the Tukey test.
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Figure 3 Values of the oxygen uptake kinetics during the first 3 min of recovery (mean ± SD) after maximal cardiopulmonary exercise test before (A) and after (B) intervention for the placebo inspiratory muscle training group (P-IMT) and the inspiratory muscle training group (IMT). Overall two-way ANOVA for repeated measures: p < 0.001 for group, training, and interaction effects. *Significantly different between groups (p < 0.05) by the Tukey test.
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