Table 2.

Eligibility criteria.

Data type	Eligibility criteria
Population	Participants of any age participating in physical activity programs in the context of health promotion or preventive care settings were included. Studies focusing on special populations (eg, pregnant women) or studies including participants with physical or psychological morbidities preventing them from participating in physical activity were excluded.
Intervention	Stand-alone mobile apps and web apps exclusively designed for mobile devices; multicomponent interventions (eg, supported through brief counseling sessions or paired with other mHealtha technologies) were included as long as the app was the primary component to the intervention; interventions that targeted ≥2 health behaviors in addition to physical activity (eg, diet, sleep, and SBb) were excluded; apps solely used for data collection purposes or as an appointment reminder service only were not eligible.
Comparator	Active or inactive comparator arms were included; single-subject design trials were excluded.
Outcome	Device-based measures of physical activity.
Study design	RCTsc and randomized ecologically valid research designs (ie, practical clinical trials, RCTs); randomized pilot and feasibility studies were included.

^amHealth: mobile health.

^bSB: sedentary behavior.

^cRCT: randomized controlled trial.