Evaluate the Effect of Dietary Supplement Combined Exercise Among Patients With Sarcopenia Comorbid With Lung Disease

This study looks at whether combining a dietary supplement with exercise can improve muscle strength and function in people with lung disease (COPD or interstitial lung disease) who also have sarcopenia — a condition where muscles become weak and shrink with age. **You may be eligible if...** - You are an outpatient with COPD (chronic obstructive pulmonary disease) or ILD (interstitial lung disease) and your doctor says you don't need hospitalization - You have been diagnosed with sarcopenia (low muscle mass/strength) by your doctor - You are 20 years old or older **You may NOT be eligible if...** - You are unwilling to sign a consent form - You are under 20 years old - You are bedridden or cannot walk due to a physical disability - You have terminal cancer or HIV/AIDS - You have significant leg or body swelling (pitting edema grade +2 or higher) Talk to your doctor to see if this trial is right for you.