Walk2Bactive: A randomised controlled trial of a physical activity-focused behavioural intervention beyond pulmonary rehabilitation in chronic obstructive pulmonary disease

Joana Cruz, Dina Brooks, Alda Marques, Joana Cruz, Dina Brooks, Alda Marques

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.

Trial registration: ClinicalTrials.gov NCT02122614.

Keywords: Chronic obstructive pulmonary disease; daily activity; exercise; monitoring; pedometer social cognitive theory.

Conflict of interest statement

Declaration of Conflicting Interests: The author(s) declared no potential conflicts of interest with respect to the research, authorship, and/or publication of this article.

© The Author(s) 2015.

Figures

Figure 1.
Figure 1.
Flow diagram.
Figure 2.
Figure 2.
PA levels of participants in the EG (•) and CG (▾) at baseline, 3 and 6 months. Data are presented as mean and standard error of the mean. Significant differences between groups in each time point are identified with an *. (a) Time in MVPA. (b) Time in MVPA according to the international recommendations (i.e., ≥30 minutes of MVPA either continuous or in blocks of ≥10 minutes). (c) Time in total PA. (d) Number of daily steps. CG: control group; EG: experimental group; MVPA: moderate-to-vigorous physical activity; PA: physical activity.

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Source: PubMed

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