The research process was guided by the CONSORT Statement for RCTs. The process involved registration, allocation, follow-up, and analysis. The recruitment process began with a feasibility assessment for potential respondents. This process was carried out when the patient conducted a phase 2 pulmonary rehabilitation evaluation.
Researchers initially reviewed patient data through medical records, reviewing ID, color code, age, gender, medical history, patient condition, and location of residence. Patients' communication skills were assessed during the evaluation.
The inclusion criteria for this study were patients aged 18-60 years, diagnosed with mild to moderate COPD, or with other medical conditions but a history of COPD, able and calm to follow instructions to inhale using the balloon blowing technique, and willing to be studied with informed consent. Exclusion criteria included patients with severe shortness of breath, patients on respiratory support, and abnormal hemoglobin levels. Dropout criteria included discontinuation of the study and respondents not undergoing the appropriate intervention. The collected respondents were then randomly assigned using envelopes, dividing them into two groups: 23 respondents in the intervention group and 23 respondents in the control group.
