Inspiratory muscle training using an incremental endurance test alleviates dyspnea and improves functional status in patients with chronic heart failure

Research output: Contribution to journalArticle


  • Yannis Laoutaris
  • A Dritsas
  • A Manginas
  • P Alivizatos
  • D Cokkinas

Colleges, School and Institutes


Background The benefits of inspiratory muscle training (IMT) in patients with chronic heart failure (CHF) have been inadequately studied. Design and Methods Using a prospective, age and sex-matched controlled study, we investigated 35 patients with moderate to severe CHF (NYHA class II-III and left ventricular ejection fraction 24.4 +/- 1.3% [mean +/- SEM]). An incremental respiratory endurance test using a fixed respiratory workload was provided by software with an electronic mouth pressure manometer interfaced with a computer. The training group (n=20) exercised at 60% of individual sustained maximal inspiratory pressure (SMIP) and the control group (n=15) at 15% of SMIP. All patients exercised three times weekly for 10 weeks. Pulmonary function, exercise capacity, dyspnea and quality of life were assessed, pre- and post-training. Results The training group significantly increased both maximum inspiratory pressure (Pimax), (111 +/- 6.8 versus 83 +/- 5.7cmH(2)O, P


Original languageEnglish
Pages (from-to)489-496
Number of pages8
JournalEuropean Journal of Cardiovascular Prevention & Rehabilitation
Publication statusPublished - 1 Jan 2004


  • exercise, heart failure, respiratory muscles