The study aimed to determine the effect of an eight-week interval training method on lung function profile among Chronic Obstructive Pulmonary Disease patient in Mandaue City. The researchers used the repeated-measure as a research design. Ten (10) COPD patients were gathered from Barangay Guizo and were selected through purposive sampling technique. The pulmonary rehabilitation program was conducted in Cebu Doctors' University. The study utilized two (2) research instruments namely, Spirobank G and Pulmonary Rehabilitation equipment.
Based on the results, it showed that COPD patients exhibit a slight improvement on their lung function after an eight-week interval training method of pulmonary rehabilitation. Pre-test data showed a decreased in Forced Expiratory Volume in One Second (FEV1), Forced Vital Capacity (FVC), and Forced Expiratory Volume in One Second Ratio (FEV1/FVC%) which indicated a decreased lung volumes and compliance. Forced Expiratory Volume in One Second (FEV1) showed a slight increase in value from the baseline to 4th week post-test by 0.027 L and continued to increase by 0.033 L after the 8th week post treatment. Forced Vital Capacity (FVC) also showed a slight increase in value from the baseline to the 4th week post-test and after the 8th week post-test by 0.062 L and 0.018 L respectively. On the other hand, Forced Expiratory Volume in One Second Ratio (FEV1/FVC%) did not show an increase in value from the baseline to the 4th week post-test. However, the value has slightly increased from the 4th week up to the 8th week post-test by 0.866. Based on the data gathered through simple spirometry, there was a slight increase in Forced Expiratory Volume in One Second (FEV1), Forced Vital Capacity (FVC) and Forced Expiratory Volume in One Second Ratio (FEV1/FVC%) after an eight-week interval training method. Also, the study showed a significant difference across time points on the lung function profile which implied an exercise tolerance, muscle strength endurance and quality of life.
Majority of the COPD patients showed a minimal improvement on their lung function profile in terms of FEV1, FVC and FEV1/FVC%. Thus, it revealed a significant difference on pre-test to post-test (4th - 8th week) treatments. As for recommendations, the Department of Health and other local health agencies must provide quality care seminars among COPD patients. Furthermore, persons with chronic obstructive pulmonary disease should have a regular check-up to avoid further exacerbations. Lastly, pulmonary rehabilitation centers must be established within Cebu. For future recommendations, further studies are needed to know more on the impact of interval training method among COPD patients and also the effect it impose on persons with Restrictive Lung Diseases (RLD).