title: Physical activity in people with COPD, using the National Health and Nutrition Evaluation Survey dataset (2003-2006).
abstract: BACKGROUND
  People with chronic obstructive pulmonary disease (COPD) are sedentary but the extent of the problem is not fully understood.
  
  
  OBJECTIVE
  This study examines sedentary time and physical activity (PA) and the relative effects of demographic and clinical characteristics on sedentary time and PA in a population-based sample of people with COPD and a comparison group from the general population.
  
  
  METHODS
  Subjects were drawn from the National Health and Nutrition Examination Survey dataset (2003-2006). Physical activity was measured by accelerometry.
  
  
  RESULTS
  People with COPD were sedentary and spent less time in most levels of PA. Age, gender, race, level of education, working status, shortness of breath, self-reported health, and body mass index were significantly associated with sedentary time or level of PA.
  
  
  CONCLUSIONS
  Findings emphasize the need to decrease sedentary time and increase PA in people with COPD.
authors.affiliation: College of Nursing, Korea University, 145 Anam-Ro, Seongbuk-gu, Seoul, Republic of Korea. sookyung.park7@gmail.com
authors.forename: Soo Kyung
authors.initials: SK
authors.lastname: Park
authors.forename: Caroline R
authors.initials: CR
authors.lastname: Richardson
authors.forename: Robert G
authors.initials: RG
authors.lastname: Holleman
authors.forename: Janet L
authors.initials: JL
authors.lastname: Larson
mesh_terms: D000368:Aged; D015992:Body Mass Index; D003430:Cross-Sectional Studies; D015444:Exercise; D005260:Female; D015438:Health Behavior; D006304:Health Status; D006801:Humans; D008297:Male; D008875:Middle Aged; D009749:Nutrition Surveys; D029424:Pulmonary Disease, Chronic Obstructive / Q000453:epidemiology; D057185:Sedentary Behavior; D057566:Self Report; D012959:Socioeconomic Factors
keywords: ActiGraph accelerometry; COPD; Physical activity; Sedentary time