Material and methods: This study was a quasi-experiment conducted from August to November 2020 involving 10 COPD stable patients. In the first meeting at the hospital, patients were taught breathing techniques and upper-limb exercise movements which subsequently had to be done and recorded at home. Patients then sent the videos to the research team via whatsapp to be evaluated. Prior to starting the 4-week with twice-a-week frequency home-based rehabilitation, and again at the end of it, patients' conditions were evaluated based on the following factors: lung functional capacity was measured by 6MWD (6 Minutes Walking Distance), Perceived Exertion Scale by mMRC (modified Medical Research Council) and Borg, the quality of life by SGRQ (St. George's Respiratory Questionnaire) index, the severity of symptoms by CAT (COPD Assessment Test) and changes in muscle mass. Statistical analysis was conducted using the Wilcoxon and paired t-test.
Results: After 4 weeks of home training with twice-a-week frequency, the results showed significant improvement, with p-value < 0.05, in the increased 6MWD value (16.4 ± 4.45 to 19.8 ± 3.64), mMRC (1.90 ± 1.10 to 0.90 ± 0.87), Borg (3.05 ± 1.53 to 1.40 ± 1.42), CAT (15.7 ± 6.63 to 11.8 ± 5.24) and muscle mass (28.36 ± 2.89 to 31.86 ± 3.97).
Conclusion: The method produced positive outcomes in patients' lung function capacity, severity of symptoms, exertion scale, muscle mass, and general quality of life. Accordingly, the home-based rehabilitation programme was as effective as the programme conducted at health-care centers.
Keywords: COPD; breathing exercise; home-based pulmonary rehabilitation; upper limb exercise.