Multiphase Activity Promotion Study

"This condition receives three study components:~1. The base-level of the smartphone app, which contains health-related educational content (i.e., weekly videos, additional resources, quiz questions), activity tracking, and graphical feedback.~2. The guided goal-setting module within the app that utilizes participant activity preferences and experiences, as well as performance within the program to guide the setting of high-quality short and long-term physical activity goals. These goals form the basis of the physical activity prescription.~3. The points-based feedback module. For each action in the app (e.g., setting goals, achieving goals, viewing weekly videos, answering quiz questions, tracking activity), a number of program points is awarded. These are weighted by task difficulty, and accumulate to earn levels. Levels accumulate to earn badges depicting an avatar becoming increasingly healthy and active. Badges accumulate to earn titles (e.g., expert exerciser)."

"This condition receives two study components:~1. The first is the base-level of the smartphone app, which contains health-related educational content (i.e., weekly videos, additional resources, brief quiz questions), behavioral tracking, and instantaneous graphical feedback.~2. The second is the guided goal-setting module within the app that utilizes participant activity preferences and experiences, as well as performance within the program to guide the setting of high-quality short and long-term physical activity goals. These goals form the basis of the physical activity prescription."

"This condition receives two study components:~1. The first is the base-level of the smartphone app, which contains health-related educational content (i.e., weekly videos, additional resources, brief quiz questions), behavioral tracking, and instantaneous graphical feedback.~2. The second is the points-based feedback module. For each action in the app (e.g., viewing weekly videos, answering quiz questions, tracking activity), a number of program points is awarded. These are weighted by task difficulty, and accumulate to earn levels. Levels accumulate to earn badges depicting an avatar becoming increasingly healthy and active. Badges accumulate to earn titles (e.g., expert exerciser). As the intervention is goal drive, these participants will also receive printed goal setting worksheets."

This condition receives only the base-level smartphone app. This contains health-related educational content (i.e., weekly videos, additional resources, brief quiz questions), behavioral tracking, and instantaneous graphical feedback. As the intervention is goal drive, these participants will also receive printed goal setting worksheets.