title: Walk2Bactive: A randomised controlled trial of a physical activity-focused behavioural intervention beyond pulmonary rehabilitation in chronic obstructive pulmonary disease.
abstract: The aim of this study was to investigate the impact of a physical activity (PA)-focused behavioural intervention during and after pulmonary rehabilitation (PR) on PA levels (primary aim), health-related outcomes and self-efficacy (secondary aims) of patients with COPD. Thirty-two patients were randomly assigned to an experimental group (EG) or control group (CG). The EG received a PA-focused behavioural intervention during PR (3 months) and follow-up support (3 months). The CG received PR (3 months). Daily PA was collected: number of steps; time spent in moderate-to-vigorous PA (MVPA), total PA and sedentary activities (SA). Secondary outcomes comprised exercise capacity, muscle strength, health-related quality of life (HRQOL) and self-efficacy. Measures were collected at baseline, 3 and 6 months. Compared with the CG, the EG improved the number of steps (p = 0.006) and time spent in MVPA (p = 0.007), total PA (p = 0.014) and SA (p = 0.018) at 3 months. Differences were maintained after follow-up support (0.025 ≤ p ≤ 0.040), except for SA (p = 0.781). Exercise capacity, muscle strength and HRQOL were increased at 3 and 6 months (p ≤ 0.002) with no between-group differences (0.148 ≤ p ≤ 0.987). No changes were observed in self-efficacy (p = 0.899). A PA-focused behavioural intervention during and after PR may improve patients' PA levels. Further research is warranted to assess the sustainability of the findings.
authors.affiliation: Respiratory Research and Rehabilitation Laboratory (Lab 3R), School of Health Sciences, University of Aveiro (ESSUA), Campus Universitário de Santiago, Aveiro, Portugal Center for Health Technology and Services Research (CINTESIS), School of Health Sciences, University of Aveiro (ESSUA), Campus Universitário de Santiago, Aveiro, Portugal.
authors.forename: Joana
authors.initials: J
authors.lastname: Cruz
authors.affiliation: Rehabilitation Science Institute and Department of Physical Therapy, University of Toronto, Toronto, ON, Canada.
authors.forename: Dina
authors.initials: D
authors.lastname: Brooks
authors.affiliation: Respiratory Research and Rehabilitation Laboratory (Lab 3R), School of Health Sciences, University of Aveiro (ESSUA), Campus Universitário de Santiago, Aveiro, Portugal Center for Health Technology and Services Research (CINTESIS), School of Health Sciences, University of Aveiro (ESSUA), Campus Universitário de Santiago, Aveiro, Portugal amarques@ua.pt.
authors.forename: Alda
authors.initials: A
authors.lastname: Marques
mesh_terms: D001521:Behavior Therapy / Q000379:methods*; D006801:Humans; D009043:Motor Activity; D053580:Muscle Strength / Q000502:physiology; D029424:Pulmonary Disease, Chronic Obstructive / Q000534:rehabilitation*; D011788:Quality of Life; D020377:Self Efficacy
keywords: Chronic obstructive pulmonary disease; daily activity; exercise; monitoring; pedometer social cognitive theory