Open AccessThe exercise in pulmonary arterial hypertension (ExPAH) study: A randomized controlled pilot of exercise training and multidisciplinary rehabilitation in pulmonary arterial hypertension
Author(s) -
Chia Karen S. W.,
Shiner Christine T.,
Brown Karen,
Holloway Cameron J.,
Moreyra Camila,
Bart Nicole,
Wong Peter K. K.,
Faux Steven G.,
Kotlyar Eugene
Publication year - 2022
Publication title -
pulmonary circulation
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.791
H-Index - 40
ISSN - 2045-8940
DOI - 10.1002/pul2.12069
Subject(s) - medicine , pulmonary rehabilitation , physical therapy , ejection fraction , heart failure , stroke volume , cardiac index , cardiology , randomized controlled trial , hemodynamics , pulmonary wedge pressure , pulmonary hypertension , rehabilitation , stroke (engine) , quality of life (healthcare) , cardiac output , mechanical engineering , nursing , engineering
Abstract Pulmonary hypertension (PH) is characterized by progressive dyspnea, fatigue, and reduced exercise capacity. Despite medical treatment, outcomes remain poor. While exercise training is well established in patients with heart failure, it is less established in patients with PH. This single‐blind, randomized controlled pilot study examined the feasibility and effect of 12‐week outpatient exercise (multidisciplinary rehabilitation or home walking program) on hemodynamics using cardiac magnetic resonance imaging (cMRI) and right heart catheterization (RHC) in patients with pulmonary arterial hypertension (PAH), a subset of PH. Sixteen participants were randomized to either multidisciplinary outpatient rehabilitation or a home walking program for 12 weeks. Primary outcome measures were changes in right ventricular ejection fraction and stroke volume index on cMRI. Secondary outcome measures included hemodynamics on RHC, quality of life (QOL), muscle strength (handgrip and vital capacity) and 6‐min walk test. This preliminary, pilot study suggests that outpatient exercise interventions may be associated with improved hemodynamic function (mean pulmonary artery wedge pressure, stroke volume, and stroke volume index), QOL (PH symptoms, depression, and anxiety), and muscular strength (vital capacity and handgrip strength) for people with PAH, but was not adequately powered to make any formal conclusions. However, our outpatient programs were feasible, safe, and acceptable to participants. Future studies are required to further explore the potential hemodynamic benefits of exercise in PAH.