Gastroesophageal reflux (GER) is a risk factor for the acute exacerbation of chronic obstructive pulmonary disease (AECOPD) among COPD patients with comorbid GER symptom. However, studies investigating the efficacy of rehabilitate exercises on improving GER symptoms in this population are lacking. This study's aim was to explore the effectiveness of walking exercise and diaphragmatic training on improving GER symptoms, exercise endurance, and breathing difficulty in daily lives among COPD patients with comorbid GER symptoms. This study adopted parallel random controlled trial methodology and used block randomization to assign 38 study subjects to three study arms: walking exercise group, diaphragmatic training group or control group prior to conducting an eight-week intervention. Following the intervention, one group pre-post analysis indicated that the diaphragmatic training group and the walking exercise group experienced substantially improved GER symptoms. The walking exercise group experienced both improved exercise endurance and COPD health-related quality of life. Furthermore, after adjusting for confounding variables, the walking exercise group's GER symptom value was shown to have decreased by 5.828 points, which was significantly greater than the reference group (p＜0.05). The results of this study suggested that walking exercise was more efficient on the improvement of GER symptoms in COPD patient comorbid GER symptoms.
- walking exercise
- diaphragmatic training
- chronic obstructive pulmonary disease
- reflux symptoms