Key result
Respiratory biofeedback training integrated into pulmonary rehabilitation did not significantly improve dyspnea or physical performance compared to rehabilitation alone, but it yielded greater improvements in cognitive performance and depressive symptoms in patients with severe COPD.
Why the study?
Residual symptoms often remain after pulmonary rehabilitation in advanced COPD, and respiratory biofeedback training may help modulate autonomic and emotional responses to dyspnea.
Does respiratory biofeedback training improve dyspnea, functional performance, cognitive function, and mood in hospitalized patients with very severe COPD undergoing pulmonary rehabilitation?
RCT (n=30)
Open-label
Computer-generated randomization
No
Does respiratory biofeedback training improve dyspnea, functional performance, cognitive function, and mood in hospitalized patients with very severe COPD undergoing pulmonary rehabilitation?
Respiratory biofeedback training as an adjunct to pulmonary rehabilitation in severe COPD does not improve physical outcomes more than standard care but provides clinically meaningful benefits in cognitive function and depressive symptoms.
Answers are grounded in this paper and cite their sources.
RBT may aid cognition and mood in severe COPD rehab without physical gains; extends biofeedback evidence but leaves effects on dyspnea open pending larger trials.
Chronic obstructive pulmonary disease (COPD) is associated with persistent dyspnea, reduced functional capacity, and significant cognitive and affective impairments. Pulmonary rehabilitation improves the physical and psychological condition, however residual symptoms often remain, especially in patients with advanced disease. Respiratory biofeedback training (RBT) may help modulate autonomic and emotional responses to dyspnea, offering a potential adjunctive intervention. This pilot study investigated the effects of RBT integrated into a standard program of pulmonary rehabilitation for hospitalized patients with very severe COPD (GOLD stage 4 and an mMRC dyspnea score of ≥ 3 despite maximal pharmacological therapy). Thirty patients were randomized to receive either standard pulmonary rehabilitation alone (control group) or in combination with daily RBT sessions for three weeks (biofeedback group). Pre- and post-treatment assessments included measures of dyspnea, functional performance, quality of life, cognitive function and mood. Data were analyzed using Bayesian repeated-measures ANOVA, and results were normalized using Minimal Clinically Important Differences (MCIDs). Both groups showed significant improvements in respiratory and functional outcomes (e.g., mMRC, 6MWT), with no group differences. However, the biofeedback group demonstrated greater improvements in cognitive performance (MoCA) and depressive symptoms (HADS-D). While RBT did not enhance dyspnea or physical performance in patients receiving inpatient pulmonary rehabilitation, it was associated with significant gains in cognitive and emotional outcomes. These findings suggest that RBT may serve as a valuable neuropsychological adjunct in the management of late-stage COPD.
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Lagravinese et al. (2026) conducted an RCT in Late-Stage Chronic Obstructive Pulmonary Disease (COPD) (n=30). Respiratory biofeedback training vs. Standard pulmonary rehabilitation alone was evaluated on mMRC dyspnea score. Respiratory biofeedback training integrated into pulmonary rehabilitation did not significantly improve dyspnea or physical performance compared to rehabilitation alone, but it yielded greater improvements in cognitive performance and depressive symptoms in patients with severe COPD.
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