App-Based Intervention Combining Evidence-Based Behavior Change Techniques With a Model-Based Reasoning System to Promote Physical Activity Among Young Adults (Active2Gether): Descriptive Study of the Development and Content.

Background: The Active2Gether intervention is an app-based intervention designed to help and encourage young adults to become and remain physically active by means of personalized, real-time activity tracking and context-specific feedback.

Objective: The objective of our study was to describe the development and content of the Active2Gether intervention for physical activity promotion.

Methods: A systematic and stepwise approach was used to develop the Active2Gether intervention.

Active2Gether: A Personalized m-Health Intervention to Encourage Physical Activity.

Lack of physical activity is an increasingly important health risk. Modern mobile technology, such as smartphones and digital measurement devices, provides new opportunities to tackle physical inactivity. This paper describes the design of a system that aims to encourage young adults to be more physically active.

What features do Dutch university students prefer in a smartphone application for promotion of physical activity? A qualitative approach.

Background: The transition from adolescence to early adulthood is a critical period in which there is a decline in physical activity (PA). College and university students make up a large segment of this age group. Smartphones may be used to promote and support PA.

Apps to promote physical activity among adults: a review and content analysis.

Background: In May 2013, the iTunes and Google Play stores contained 23,490 and 17,756 smartphone applications (apps) categorized as Health and Fitness, respectively. The quality of these apps, in terms of applying established health behavior change techniques, remains unclear.

Methods: The study sample was identified through systematic searches in iTunes and Google Play.