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Effect of sitting and lying Liuzijue exercise for pulmonary rehabilitation in acute exacerbation of chronic obstructive pulmonary disease patients with non-invasive ventilation: a randomized controlled trial.

BACKGROUND
Acute exacerbation of chronic obstructive pulmonary disease (AECOPD) will lead to the aggravation of respiratory symptoms and accelerate the progression of the disease. So early pulmonary rehabilitation is essential for patients with AECOPD. We aimed to investigate the effect of sitting and lying Liuzijue in AECOPD patients with non-invasive ventilation.


METHODS
A total of 80 AECOPD patients with non-invasive ventilation were randomly divided into two groups. The controlled group (CG) (n=40) received AECOPD conventional treatment and nursing, and the sitting and lying Liuzijue exercise group (LG) (n=40) received sitting and lying Liuzijue therapy. Participants in the LG were required to take this training for 3 months, 30 minutes once every morning and evening. Pulmonary function test, 6-minute walking test (6MWT), Modified Medical Research Council Dyspnea Scales (mMRC), and the St George's Respiratory Questionnaire (SGRQ) were evaluated before and after the intervention. Blood gas was measured before treatment, 3 days, and 5 days after treatment. In addition, the length of hospital stay, the duration of non-invasive ventilation, and the frequency of acute exacerbation within 6 months after the intervention were compared.


RESULTS
Seventy patients completed the study. The pulmonary function, 6MWT, mMRC scores, SGRQ, and pH, were significantly improved in the LG. Meanwhile, the 6MWT of the CG was improved. The comparison between the groups showed that the improvement of the pulmonary function, 6MWD, mMRC scores, SGRQ, the duration of non-invasive ventilation, and the frequency of acute exacerbation within 6 months of the LG group differed significantly from the CG.


CONCLUSIONS
Sitting and lying Liuzijue exercise methods significantly improved lung function, exercise endurance, and quality of life in AECOPD patients with non-invasive ventilation.


TRIAL REGISTRATION
Chinese Clinical Trial Registry ChiCTR2000034530.