Key result
Inspiratory muscle training boosts 90-day walk distance by ~57 m after revascularization vs physical therapy alone.
Why the study?
Does inspiratory muscle training combined with conventional physical therapy improve exercise capacity and quality of life in patients undergoing coronary artery bypass grafting with cardiopulmonary bypass?
RCT (n=70)
Open-label
randomized sequence of simple allocations
No
Does inspiratory muscle training combined with conventional physical therapy improve exercise capacity and quality of life in patients undergoing coronary artery bypass grafting with cardiopulmonary bypass?
The addition of inspiratory muscle training to conventional physical therapy significantly improves exercise capacity and quality of life up to 90 days following coronary artery bypass grafting.
Answers are grounded in this paper and cite their sources.
Supports adding inspiratory muscle training to post-revascularization rehab; extends RCT evidence for combined approaches in CABG recovery.
OBJECTIVE: To evaluate the effects of inspiratory muscle training using POWERbreathe® in patients undergoing myocardial revascularization with extracorporeal circulation, focusing on respiratory and peripheral muscle strength, exercise capacity, functional independence, and quality of life, from hospitalization to a 30 and 90 day followup. METHODS: This randomized controlled clinical trial included 70 patients aged 44-78 years who were randomized into two groups. The Control Group underwent conventional physical therapy (Control Group, n=34), whereas the Intervention Group underwent conventional physical therapy combined with inspiratory muscle training using POWERbreathe® (Intervention Group, n=36). Respiratory and peripheral muscle strength, capacity, functional independence, and quality of life were evaluated preoperatively and 5, 30, and 90 days after surgery. RESULTS: A statistically significant increase in exercise capacity in the Intervention Group was observed 90 days after surgery (p=0.0192), as well as in the functional capacity domain of quality of life at 30 and 90 days after surgery (p=0.0079). The maximal inspiratory pressure and handgrip strength showed a negative correlation, ranging from weak to moderate intensity, in both groups over time. CONCLUSION: Inspiratory muscle training with the POWERBreathe combined with physical therapy improves exercise capacity and quality of life in patients undergoing myocardial revascularization.Prospero database registration: RBR-2p4mz5.
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Ribeiro et al. (2026) conducted an RCT in Coronary artery bypass grafting (CABG) with cardiopulmonary bypass (n=70). Inspiratory muscle training using POWERbreathe vs. Conventional physical therapy was evaluated on Exercise capacity (6-minute walk test distance in meters) at 90 days (p=0.0192). Inspiratory muscle training combined with conventional physical therapy improved exercise capacity at 90 days compared to physical therapy alone in patients undergoing myocardial revascularization.
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