title: Physical Activity of Patients with COPD from Regions with Different Climatic Variations.
abstract: Seasonal changes in physical activity in daily life (PADL) of patients with Chronic Obstructive Pulmonary Disease (COPD) living in regions of the world with contrasting (i.e., mild or marked) weather variations have not been yet investigated. We aimed to quantify PADL and compare its variability caused by seasonality in patients with COPD who live in world regions with different summer-winter climatic variations (i.e. Londrina, Brazil and Leuven, Belgium). In a longitudinal, prospective and observational study, patients with COPD from Brazil and Belgium wore the SenseWear Armband for 7 days in summer and 7 days in winter. Active time (≥2METs) was the primary outcome. PADL data were matched day-by-day with weather information. Regarding the two assessment moments, median (min;max) temperatures were 11 (-5.5;27.2)°C in Leuven and 21 (7;27)°C in Londrina. Patients in Brazil (n = 19, 69 ± 7 years, FEV147 ± 15%pred) and Belgium (n = 18, 69 ± 6 years, FEV150 ± 15%pred) decreased their active time in winter compared to summer (p < 0.05), and this reduction was more pronounced in Brazil (p = 0.01, between group). Mean, minimum and maximum temperature, daylight duration and relative humidity were significantly related to active time. Patients with COPD decrease their PADL in winter even in a region with milder climatic variation.
authors.affiliation: a Laboratory of Research in Respiratory Physiotherapy, Department of Physiotherapy , State University of Londrina , Londrina , Brazil.
authors.forename: Karina Couto
authors.initials: KC
authors.lastname: Furlanetto
authors.affiliation: b Department of Rehabilitation Sciences , KU Leuven , Leuven , Belgium.|c Department of Respiratory Diseases , University Hospitals Leuven , Leuven , Belgium.|d Centre for Research in Environmental Epidemiology (CREAL) , ISGlobal , Barcelona , Spain.
authors.forename: Heleen
authors.initials: H
authors.lastname: Demeyer
authors.affiliation: a Laboratory of Research in Respiratory Physiotherapy, Department of Physiotherapy , State University of Londrina , Londrina , Brazil.
authors.forename: Thais
authors.initials: T
authors.lastname: Sant'anna
authors.affiliation: a Laboratory of Research in Respiratory Physiotherapy, Department of Physiotherapy , State University of Londrina , Londrina , Brazil.
authors.forename: Nidia Aparecida
authors.initials: NA
authors.lastname: Hernandes
authors.affiliation: b Department of Rehabilitation Sciences , KU Leuven , Leuven , Belgium.|c Department of Respiratory Diseases , University Hospitals Leuven , Leuven , Belgium.
authors.forename: Carlos Augusto
authors.initials: CA
authors.lastname: Camillo
authors.affiliation: d Centre for Research in Environmental Epidemiology (CREAL) , ISGlobal , Barcelona , Spain.
authors.forename: Ignasi Serra
authors.initials: IS
authors.lastname: Pons
authors.affiliation: b Department of Rehabilitation Sciences , KU Leuven , Leuven , Belgium.|c Department of Respiratory Diseases , University Hospitals Leuven , Leuven , Belgium.
authors.forename: Rik
authors.initials: R
authors.lastname: Gosselink
authors.affiliation: b Department of Rehabilitation Sciences , KU Leuven , Leuven , Belgium.|c Department of Respiratory Diseases , University Hospitals Leuven , Leuven , Belgium.
authors.forename: Thierry
authors.initials: T
authors.lastname: Troosters
authors.affiliation: a Laboratory of Research in Respiratory Physiotherapy, Department of Physiotherapy , State University of Londrina , Londrina , Brazil.
authors.forename: Fabio
authors.initials: F
authors.lastname: Pitta
mesh_terms: D000203:Activities of Daily Living; D000368:Aged; D001530:Belgium; D001938:Brazil; D015444:Exercise; D005260:Female; D006801:Humans; D006813:Humidity; D008137:Longitudinal Studies; D008297:Male; D055686:Metabolic Equivalent; D008875:Middle Aged; D011446:Prospective Studies; D029424:Pulmonary Disease, Chronic Obstructive / Q000503:physiopathology*; D012621:Seasons; D013696:Temperature
keywords: Chronic obstructive pulmonary disease; motor activity; seasonal variation; weather