Fig. 4From: The therapeutic effects of qigong in patients with chronic obstructive pulmonary disease in the stable stage: a meta-analysisEffects of Qigong on the forced vital capacity rate of 1 s/forced vital capacity (FEV1/FVC). Subgroup meta-analysis was used to assess the effects of different types of Qigong on the FEV1/FVC with a fixed effects modelBack to article page