ABSTRACT
Chronic obstructive pulmonary disease (COPD) is a major global health problem and has an impact on increasing healthcare costs and decreasing productivity. The use of natural therapy in the treatment of chronic diseases is an opportunity for Indonesia as a tropical country that has many variations of plants that have the potential to become herbal medicines. Infusion red ginger (Zingiber officinale var. rubrum) is one of the most widely consumed medicinal plants in Indonesia. This study at to determine the effectiveness of improving lung function in red ginger infusion in increasing the value of forced expiratory volume in 1 second (FEV1) and forced vital capacity (FVC) in COPD patients. The research method used was pre-post design in May until September 2021. Respondents were adult COPD patients domiciled in Mojoanyar districts, Mojokerto City. The study was conducted by examining lung function, then continued with 250 grams of red ginger steeping therapy for 4 months. Data analysis to examine the effectiveness of improving lung function in red ginger infusion in increasing the value of FEV1/FVC in COPD patients using t-test. Respondents used in this study were 21 people. The average age of the respondents was 53.24 years. The normality test showed that the average per month all data were normally distributed (Pvalue>0.05). Then continued with the t-test showing that there is a significant change every month (P value=0.000). Infusion of red ginger for 4 months was proven to be effective in increasing lung function from the parameter values of FEV1/FVC significantly. © 2021 Teikyo University School of Medicine. All rights reserved.