Sequential NIPPV + IMT intervention significantly improved the quality of life in COPD patients
COPD
COPD
Compared to OT group, IMT, NIPPV and sequential NIPPV + IMT treatment remarkably enhanced the score of health-related quality (Fig. 
Sequential NIPPV + IMT intervention significantly improved the quality of life in COPD patients. A total of 100 COPD patients were enrolled and randomly divided into OT group, NIPPV group, IMT group and NIPPV + IMT group. After 8 weeks of treatment, SRI questionnaire was carried out to assess the quality of life of COPD patients. *P < 0.05, **P < 0.01