Inclusion Criteria:  Subjects with COPD or IPF.  Exclusion Criteria:  Subjects who have been hospitalized for exacerbation of respiratory failure within 1 month of study participation Subjects who have already been diagnosed with sarcopenia or cognitive dysfunction Subjects receiving long-term oxygen therapy (LTOT) or non-invasive ventilation therapy (NIV) Subjects with obstructive sleep apnea who are indicated for continuous positive airway pressure (CPAP) Subjects with severe complications such as cardiovascular disease, liver disease, renal disease, malignancy, and neurological disease.