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 …

Background: Insufficient physical activity (PA) is highly prevalent and associated with
adverse health conditions and the risk of noncommunicable diseases. To increase levels of …

Background Evidence suggests that physical activity (PA) during childhood and
adolescence is crucial as it usually results in adequate PA levels in adulthood. Given the …

Background Despite the unequivocal evidence demonstrating the benefits of being
physically active, many people do not meet the recommended guidelines of at least 150 …

Background: Web-based and mobile interventions to influence physical activity behavior
have had limited effects on sustained behavior change. One reason may be that the …

Background Low levels of physical activity are associated with numerous adverse health
outcomes, yet sedentary lifestyles are common among both children and adults. Physical …

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: Adolescence is a critical age where steep declines in physical activity and
increases in sedentary time occur. Promoting physical activity should therefore be a priority …

Background Physical activity (PA) can increase mental and physical health in adults aged
50 years and older. However, it has been shown that PA guidelines are often not met within …

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 …