Chronic obstructive pulmonary disease(COPD)is the fourth most common cause of death world.wide;more than three million people died of COPDin 201 2.1 Risk factors of COPD include exposure tosmoke,occupationaI dust,or fumes;recurrent respiratOry infections;low socioeconomic status;poor nutrition:and asthma.2 COPD has a significant impact onindividuals’health and frequently involves numerouscomplications,including hip fracture,male hypogcnadIsm,sarcopenm,osteoporosis,cognitive impairment,malnutrition。and decreased awareness of hypoxia.3