Article

OBJECTIVES: To assess physical activity and sitting time in patients with chronic
obstructive pulmonary disease (COPD) and to investigate which physical and
psychosocial factors are associated with physical activity and sitting time.
DESIGN: Cross-sectional study. SETTING: Patients were recruited at outpatient
clinics of general hospitals and from general practitioners. PARTICIPANTS:
Patients (N=113) with mild to very severe COPD. INTERVENTIONS: Not applicable.
MAIN OUTCOME MEASURES: Physical activity and sitting time were measured with a
triaxial accelerometer (24h/d). RESULTS: Mean locomotion time per 24 hours was
6.8% (range, 0.7%-20.4%). Elevated physical activity was independently associated
with higher self-efficacy, higher functional exercise capacity, and lower lung
hyperinflation. Decreased physical activity was strongest in more severe stages
of COPD, in which the patients were mainly limited by physical disease-specific
factors (higher lung hyperinflation, worse dyspnea severity, worse leg muscle
function, and oxygen use). In less severe patients, physical activity was
independently associated with more generic factors (higher self-efficacy and the
spring/summer season). Sitting time did not differ between severity stages, and
longer sitting time in the total group was independently associated with more
positive perception of treatment control, less autonomous motivation to exercise,
not using sleep medication, and oxygen use. CONCLUSIONS: Both physical and
psychosocial factors were associated with physical activity in patients with
COPD. The factors associated with physical activity differed between disease
severity stages, raising the question of whether physical activity enhancement
programs should differ as well. Sitting time should be investigated further.
CI - Copyright (c) 2013 American Congress of Rehabilitation Medicine. Published by
Elsevier Inc. All rights reserved.

Langue : ANGLAIS