title: Quantifying physical activity in COPD: different measures for different purposes.
authors.forename: D
authors.initials: D
authors.lastname: Langer
authors.forename: F
authors.initials: F
authors.lastname: Pitta
authors.forename: T
authors.initials: T
authors.lastname: Troosters
authors.forename: C
authors.initials: C
authors.lastname: Burtin
authors.forename: M
authors.initials: M
authors.lastname: Decramer
authors.forename: R
authors.initials: R
authors.lastname: Gosselink
mesh_terms: D015444:Exercise / Q000502:physiology*; D006801:Humans; D007866:Leg / Q000502:physiology*; D029424:Pulmonary Disease, Chronic Obstructive / Q000503:physiopathology*