<![CDATA[Chronic Obstructive Pulmonary Disease (COPD) is a chronic respiratory disorder characterized by shortness of breath, reduced lung capacity, and limitations in functional activities. This case study was conducted on a 74-year-old male patient diagnosed with COPD due to chronic bronchitis, who underwent four physiotherapy sessions using interventions such as pursed lip breathing, diaphragmatic breathing, Active Cycle Breathing Technique (ACBT), and static bicycle exercise. Evaluation showed a reduction in dyspnea based on the Borg Scale from a score of 4 to 3, improvement in lung capacity measured by spirometry (FVC from 33.3% to 42.8%; FEV1 from 28.7% to 31.3%; FEV1/FVC ratio from 65.79% to 69.37%), and enhanced thoracic expansion in the upper, middle, and lower regions. Static bicycle exercise also improved endurance, as indicated by an increase in the 6-Minute Walk Test (6MWT) distance from 306 meters to 330 meters, VO2Max from 13.16 to 13.88 cc/kg, and METs from 3.76 to 3.96. Furthermore, the COPD Assessment Test (CAT) score decreased from 13 to 10, reflecting better functional status and quality of life. Despite temporary exacerbation due to influenza infection, the overall evaluation demonstrated that the combination of physiotherapy interventions contributed positively to symptom reduction, improved respiratory function, endurance, and functional activity in COPD patients with chronic bronchitis.]]>
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