- Design
- Bayesian network meta-analysis of 111 randomised trials
- Population
- 9,240 adults with stable COPD
- Primary outcome
- Lung function, 6-minute walk distance and quality of life
- Effect
- Benefits on walking and quality of life across exercises; Wu Qin Xi ranked highest for 6-minute walk
This Bayesian network meta-analysis pooled 111 randomised trials with 9,240 adults with stable COPD, comparing six mind-body exercises — yoga, tai chi, Ba Duan Jin, Yi Jin Jing, Liu Zi Jue and Wu Qin Xi — with usual care.
All showed potential benefits on walking distance and quality of life, with different exercises ranking highest for different outcomes. Reported gains in lung function were larger than exercise usually produces, which, together with mostly Chinese trials, small samples and few head-to-head comparisons, points to bias.
Pulmonary rehabilitation is underused, especially in India, and these exercises need no equipment. They may be a useful option for patients who cannot reach a rehabilitation programme.
- Consider suggesting yoga or tai chi to patients with stable COPD who cannot access pulmonary rehabilitation.
- Refer to formal pulmonary rehabilitation where available, as the established standard.
- Do not expect meaningful improvement in spirometry from these exercises.
- Let patient preference guide the choice of exercise, since no single type is clearly best.
Why it matters
It offers low-cost exercise options where rehabilitation services are scarce.
Don't overread it
Low-certainty evidence; the lung function gains are unlikely to be real at the reported size.
The statistics, in plain English
Bayesian rankings show which option is most likely best, but with few direct comparisons they are unstable. Credible intervals play the role of confidence intervals.
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