Cervical Nags Effect on Accessory Muscles

This study is testing a manual therapy technique called "cervical NAGs" — gentle movements applied to the neck joints — to see if it helps reduce the effort required by breathing muscles in people with moderate to severe COPD (a chronic lung disease). **You may be eligible if...** - You have been diagnosed with moderate (Grade II) or severe (Grade III) COPD for at least 1 year - Your condition is currently stable (no active flare-up) **You may NOT be eligible if...** - You have a pre-existing neck or cervical spine problem - You have heart disease - You have other respiratory conditions in addition to COPD - You experience severe dizziness or persistent coughing Talk to your doctor to see if this trial is right for you.