Inclusion Criteria:  Volunteer to participate in the study Be over 18 years old Being clinically stable Not having a COPD attack in the last 3 months at least  Exclusion Criteria:  Refusing to participate in the research Having had spinal surgery Presence of back and shoulder pain Idiopathic scoliosis Ankylosing spondylitis Presence of respiratory disease other than COPD Difficulty understanding verbal commands