Evaluation of nutritional status in COPD according to the GOLD-2015 staging system: a prospective observational study

This study aimed to assess nutritional statuses of chronic obstructive pulmonary disease (COPD) patients in four categories of the Global Initiative for Chronic Obstructive Lung Disease (GOLD) 2015 classification and to evaluate associations of body mass index (BMI) and fat-free mass index with respiratory and skeletal muscle strengths. This prospective observational study included COPD patients (≥40 years old) who were followed-up for at least...