Targeting dyspnoea through exercise intensity: insights from pulmonary rehabilitation and beyond, a narrative review.
Christophe Romanet, Johan Wormser, François Philippart
Exercise training at a high enough intensity to challenge the person is the core of pulmonary rehabilitation for breathlessness, and the evidence now supports using it well beyond COPD — in long-COVID, interstitial lung disease, and other conditions.
Programme length matters less than intensity.
Key findings
1In the largest component network meta-analysis of pulmonary rehabilitation to date (337 randomised controlled trials, nearly 19,000 people with COPD), physiotherapist-supervised aerobic exercise training was the minimum effective intervention; commonly added components such as structured education, strength training, and nutritional support showed little or no independent effect.
2In post-acute COVID-19 syndrome, high-intensity exercise training alone produced significant improvements in dyspnoea (SMD −0.63, 95% CI −1.03 to −0.24), exercise capacity (6MWT +60.56 m, 95% CI 40.75 to 80.36), and fatigue (FSS −0.90, 95% CI −1.49 to −0.31).
3Neither programme duration nor total number of sessions influenced exercise capacity, breathlessness, or HRQOL; intensity and supervision, rather than volume, drive the benefit of exercise training.
Still to come
How it was doneWhat they foundWhat it means for PTs
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What it does not show
This is a narrative review, not a systematic review with formal quality assessment or risk-of-bias evaluation of included studies. The evidence for several populations (obesity, neurological conditions, ICU/post-ICU) is limited, heterogeneous, or inconclusive; the review presents these findings alongside the stronger COPD and PACS evidence, which may give a false impression of uniform benefit. The review was guided by the authors' specific clinical approach to dyspnoea (critical care, post-ICU, outpatient PR), which may shape which studies were selected and how findings were interpreted. Protocol heterogeneity across the included studies (intensity, modality, duration, frequency) makes it difficult to extract a single best prescription. The review includes ongoing trials and emerging evidence, some of which has not yet been confirmed by completed studies.
Declared interests
The authors declared that no financial support was received for this work or its publication.
The easy way to misread this
Do not assume the positive PACS and ILD findings apply to ICU or post-ICU patients — the Cochrane meta-analysis for post-ICU found no significant improvements in functional capacity, dyspnoea, or HRQOL, and ICU evidence remains inconclusive. The review presents these null findings alongside the positive ones, but a hurried reader may miss them and prescribe high-intensity training to a population where it has not been shown to help.
Summarised by AI from the full paper, without a clinician reviewing it. Check it against the source before it changes what you do. Read it on PubMed →