Inspiratory Muscle Training Improves Intercostal and Forearm Muscle Oxygenation in Patients With Chronic Heart Failure: Evidence of the Origin of the Respiratory Metaboreflex

Journal of Cardiac Failure
Adalgiza M MorenoA C L Nóbrega

Abstract

The impact of inspiratory muscle training (IMT) on respiratory and peripheral muscle oxygenation and perfusion during inspiratory muscle fatigue in patients with chronic heart failure (HF) has not been established. Twenty-six patients with chronic HF were randomly assigned to either 8 weeks of IMT or a control group. Inspiratory fatigue was induced by means of a progressive inspiratory resistive loading protocol until there was an inability to sustain inspiratory pressure, when the inspiratory muscle metaboreflex should be activated. The main outcomes were intercostal and forearm muscle oxygen saturation and deoxygenation as measured by means of near-infrared spectroscopy (NIRS) and blood lactate levels. Inspiratory muscle strength was increased by 78% (P <.001) after 8 weeks of participation in the IMT group. IMT attenuated the reduction of oxygen saturation in intercostal and forearm muscles and the increase in blood lactate during respiratory fatigue (P <.001 and P <.05, respectively). These changes were different from the control group (P <.01, P <.05, and P <.05, respectively). After 8 weeks, similar increases in oxygen consumption, mean arterial pressure, heart rate, stroke volume, and cardiac output were observed in both...Continue Reading

Citations

May 17, 2018·European Journal of Preventive Cardiology·Ioannis D Laoutaris
Nov 20, 2019·Journal of Cachexia, Sarcopenia and Muscle·Ligia M Antunes-CorreaCarlos Eduardo Negrão
Aug 21, 2019·Japan Journal of Nursing Science : JJNS·Amir Hossein Hossein PourMehdi Birjandi
Jun 6, 2020·Journal of Clinical Medicine·Hugo Fernandez-RubioJ L Chicharro
Sep 17, 2020·Physical Therapy·Aline de Cassia Meine AzambujaGraciele Sbruzzi
Feb 14, 2021·International Journal of Environmental Research and Public Health·Hugo Fernández-RubioJose López Chicharro
Apr 19, 2021·Respiratory Physiology & Neurobiology·Gabriel Dias RodriguesPedro Paulo da Silva Soares
Aug 28, 2021·International Journal of Environmental Research and Public Health·Felipe Contreras-BriceñoGinés Viscor
Oct 24, 2021·Annals of Physical and Rehabilitation Medicine·Raúl Fabero-GarridoIbai López-de-Uralde-Villanueva

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