Fig. 3

Changes of FEV1, 6MWD, CAT, mMRC, diaphragmatic mobility during deep/rest breathing, SGRQ, HAMA and HAMD in patients with COPD. A Changes of FEV1, 6MWD, CAT, mMRC, SGRQ, diaphragmatic mobility during deep/rest breathing, HAMA and HAMD in patients with COPD before and after pulmonary rehabilitation as well as between control group and PR-1/2/3/4 groups. *P < 0.05, **P < 0.01, compared to the control group. #P < 0.05, ##P < 0.01, compared with before pulmonary rehabilitation. B Changes of FEV1, 6MWD, CAT, mMRC, diaphragmatic mobility during deep/rest breathing, SGRQ, HAMA and HAMD between PR3 and PR4 groups. FEV1 = Forced expiratory volume in one second; 6MWD = 6-min walk distance; CAT = COPD assessment test; mMRC = modified Medical Research Council dyspnea score; SGRQ = St. George’s Respiratory Questionnaire; HAMA = Hamilton anxiety rating scale; HAMD = Hamilton depression scale