Addition of inspiratory muscle training to aerobic training improves cardiorespiratory responses to exercise in patients with heart failure and inspiratory muscle weakness.

  • Winkelmann E
  • Chiappa G
  • Lima C
 et al. 
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Abstract

BACKGROUND: This small clinical trial tested the hypothesis that the addition of inspiratory muscle training (IMT) to aerobic exercise training (AE) results in further improvement in cardiorespiratory responses to exercise than those obtained with AE in patients with chronic heart failure (CHF) and inspiratory muscle weakness (IMW).

METHODS: Twenty-four patients with CHF and IMW (maximal inspiratory pressure
RESULTS: Compared to AE, AE + IMT resulted in additional significant improvement in PI(max) (110{%} vs 72{%}), Vo(2)peak (40{%} vs 21{%}), circulatory power, oxygen uptake efficiency slope, ventilatory efficiency, ventilatory oscillation, and T(1/2)Vo(2). Six-minute walk distance and quality of life scores improved similarly in the 2 groups.

CONCLUSION: This randomized trial demonstrates that the addition of IMT to AE results in improvement in cardiorespiratory responses to exercise in selected patients with CHF and IMW. The clinical significance of these findings should be addressed by larger randomized trials.

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Authors

  • Eliane R Winkelmann

  • Gaspar R Chiappa

  • Camila O C Lima

  • Paulo R N Viecili

  • Ricardo Stein

  • Jorge P Ribeiro

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