Abstract
BackgroundIn adults with asthma, physical activity has been associated with several asthma outcomes. However, it is unclear whether changes in physical activity, measured via an accelerometer, have an effect on asthma control. The objective of the present study is, in adults with moderate-to-severe asthma, to investigate the effects of a behaviour change intervention, which aims to increase participation in physical activity, on asthma clinical control.MethodsThis is a single-blind (outcome assessor), two-arm, randomised controlled trial (RCT). Fifty-five participants with moderate-to-severe asthma, receiving optimized pharmacological treatment, will be randomly assigned (computer-generated) into either a Control Group (CG) or an Intervention Group (IG). Both groups will receive usual care (pharmacological treatment) and similar educational programmes. In addition to these, participants in the IG will undergo the behaviour change intervention based on feedback, which aims to increase participation in physical activity. This intervention will be delivered over eight sessions as weekly one-on-one, face-to-face 40-min consultations. Both before and following the completion of the intervention period, data will be collected on asthma clinical control, levels of physical activity, health-related quality of life, asthma exacerbation and levels of anxiety and depression symptoms. Anthropometric measurements will also be collected. Information on comorbidities, lung function and the use of asthma medications will be extracted from the participant’s medical records.DiscussionIf successful, this study will demonstrate that, in adults with asthma, a behavioural change intervention which aims to increase participation in physical activity also affects asthma control.Trial registrationClinical Trials.gov PRS (Protocol registration and Results System): NCT-03705702 (04/10/2018).
Highlights
In adults with asthma, physical activity has been associated with several asthma outcomes
In the recent years, there is a growing scientific interest about the benefits of physical activity and sedentary behaviour, especially in regard to chronic respiratory diseases [18, 46]. This interest has been driven, at least in part, by several studies in people with chronic obstructive pulmonary disease (COPD) that have shown an association between low levels of physical activity and poor health outcomes [18]
Studies investigating interventions aimed at increasing levels of physical activity remain less explored in patients with asthma
Summary
Physical activity has been associated with several asthma outcomes. Several studies have reported the benefits of supervised exercise training on a broad range of outcomes in people with asthma such as disease exacerbation, clinical control, airway inflammation, psychosocial symptoms and exercise capacity [6,7,8,9,10,11]. These well-resourced studies may have limited application in regions that do not offer a program of supervised exercise training to people with asthma. The current study plans to explore an alternative approach in which participants with asthma will engage in a behaviour change program which aims to increase participation in physical activity to produce health benefits and to improve asthma control
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