How can barriers regarding a healthy diet and active lifestyle for patients with COPD or asthma be overcome by developing eHealth app features?

This study aimed to develop app features that support patients to be physically active and follow a healthy diet. Using the behavioural design thinking approach with stakeholder participation, six app features with persuasive technologies and BCTs were developed to support behaviour change. The app features focus on helping to prioritise PA and HN in daily life. Low-fi prototypes were used to test the features. Based on patient feedback, further iterations on prototyping and testing should take place.