Darcy Ummels

162 | Addendum privacy, use, and interest in feedback. Although the tracker motivated the participants to be more active, participants experienced the standard step count goal of the activity trackers as ‘too high’ and the tracker itself as too complex. They reported that they would have liked more guidance from their physiotherapists regarding the use of the trackers. Furthermore, the participants experienced some technical failures, were willing to share data with their physiotherapists, and wanted to spend an average of maximum fifty euros on an activity tracker. If activity trackers are to be embedded in physiotherapy, more attention should be paid to their integration into treatment and to helping (older) adults with a chronic disease use and interpret their data. The developed framework offered insight into each of the key concepts reported by patients with a chronic disease and can be used to guide further research and practices. Chapter Four presents the results of a study, which had two purposes: to (re)design the user interface of an existing activity tracker (so ‐ called MOX), considering the input of older adults with or without chronic diseases living independently, and to assess the daily use of and experiences with the adapted activity tracker the so ‐ called ‘Measure It Super Simple’ (MISS) Activity tracker. The double diamond method was used to (re)design the user interface. As a departure point, this study used a list of general design requirements that facilitate the development of technology for older adults. In co ‐ creation with thirty ‐ five older adults, the design, feedback system, and application were further developed into a user friendly interface: the ‘Measure It Super Simple’ (MISS) Activity. Second, the use of and experiences with the adapted MISS Activity in daily life were assessed. Twenty ‐ eight older adults used the MISS Activity for two weeks. Their user experiences were assessed through interviews. The participants reported that the MISS Activity was easy to use; they needed limited help when setting up the tracker and required limited assistance when using it throughout their daily lives. The participants also reported that they thought that anyone should be able to use it. This study offers a generic structured methodology and a list of design requirements, which can be used to adapt the interface of an existing activity tracker to suit the skills and needs of older adults with or without a chronic disease. The MISS activity seemed to be successfully (re)designed. Chapter Five describes the validation of optimised algorithm parameter settings for step count and physical behaviour of a pocket ‐ worn activity tracker used by older adults with our without chronic diseases during activities of daily living (MOX MissActivity ). For a more relevant interpretation of the results, the performance of the MOX MissActivity was compared to three reference applications: the MOX Annegran , the activPAL, and the Fitbit