Usability of a novel eHealth tool for pulmonary rehabilitation- a randomized controlled pilot- and feasibility trial in people with COPD

<bold>Background:</bold> There is a growing interest in eHealth solutions to enhance access to and utilization of pulmonary rehabilitation (PR) for people with Chronic Obstructive Pulmonary Disease (COPD). <bold>Aim:</bold> To investigate feasibility of a novel eHealth tool for PR in terms of usability and study protocol design. <bold>Methods:</bold> This randomized controlled pilot-and feasibility trial included 22 participants (55% women) with mild to severe COPD, median(IQR) age 75 (65-77) years and 7 physiotherapists (PTs) in primary healthcare. Participants were randomised to the intervention group (IG, n=15) with access to Me & COPD for 3 months or to the control group (CG, n=7) receiving usual care. Me & COPD comprises audio-visual and written instructions for self-management strategies and an individually tailored, physical exercise program including interactions with PTs. The exercise program is regularly reviewed and progressed by PTs within the tool. At intervention completion, usability was assessed using the Swedish version of the mHealth App Usability Questionnaire (S-MAUQ) in IG and participating PTs. Additionally, usage data was exported from Me & COPD. Descriptive statistics were used for analysis. <bold>Results:</bold> Median (IQR) total S-MAUQ scores were 4.6 (3.1-5.8) for participants and 4.8 (3.4-5.4) for PTs out of 7 (highest possible usability). No severe adverse events were registered. Adherence and exercise intensity evaluation was limited by incomplete exercise session registration. <bold>Conclusion:</bold> Me & COPD seemed feasible in terms of safety and an acceptable usability. The process of digitally collecting data on adherence and exercise intensity requires further development.