Background: Fitness devices have spurred the development of apps that aim to motivate
users, through interventions, to increase their physical activity (PA). Personalization in the …

Background: Although smartphone apps might support physical activity (PA), engagement
with them tends to be low. Objective: This study aimed to examine potential users' needs …

Background: Physical activity apps are commonly used to increase levels of activity and
health status. To date, the focus of research has been to determine the potential of apps to …

Background: It is unclear why some physical activity (PA) mobile health (mHealth)
interventions successfully promote PA whereas others do not. One possible explanation is …

Background: Advances in smartphones and the wide usage of social networking systems
offer opportunities for the development of innovative interventions to promote physical …

Background: Smartphones enable the implementation of just-in-time adaptive interventions
(JITAIs) that tailor the delivery of health interventions over time to user-and time-varying …

Background: Mobile technology gives researchers unimagined opportunities to design new
interventions to increase physical activity. Unfortunately, it is still unclear which elements are …

Background: A large number of people participate in individual or unorganized sports on a
recreational level. Furthermore, many participants drop out because of injury or lowered …

Background: Although mobile technologies such as smartphone apps are promising means
for motivating people to adopt a healthier lifestyle (mHealth apps), previous studies have …

Background: Use of mobile health (mHealth) technology is on an exponential rise. mHealth
apps have the capability to reach a large number of individuals, but until now have lacked …