Study: NCT03416634

Intervention type: BEHAVIORAL
Group type: ACTIVE_COMPARATOR
Intervention: App
Description: The Microsoft Band app can be installed for free on compatible smartphones. The app can be used to track steps while the phone is with the participant (such as in a pocket). Participants can synchronize their device with the study app to give permission to share physical activity level with the study team. Daily physical activity will be tracked for 24 weeks.

Intervention type: BEHAVIORAL
Group type: EXPERIMENTAL
Intervention: App
Description: The Microsoft Band app can be installed for free on compatible smartphones. The app can be used to track steps while the phone is with the participant (such as in a pocket). Participants can synchronize their device with the study app to give permission to share physical activity level with the study team. Daily physical activity will be tracked for 24 weeks.

Intervention type: BEHAVIORAL
Group type: EXPERIMENTAL
Intervention: App
Description: The Microsoft Band app can be installed for free on compatible smartphones. The app can be used to track steps while the phone is with the participant (such as in a pocket). Participants can synchronize their device with the study app to give permission to share physical activity level with the study team. Daily physical activity will be tracked for 24 weeks.

Intervention type: BEHAVIORAL
Group type: ACTIVE_COMPARATOR
Intervention: Wearable Device
Description: A Garmin vivofit 3 fitness device will be provided for free to participants randomized to this study arm. This wearable device tracks daily activity and gives reminders to move after an hour of inactivity. The battery lasts for one year and the device is water resistant. Participants can synchronize their device with the study App to give permission to share physical activity level with the study team. Daily physical activity will be tracked for 24 weeks.

Intervention type: BEHAVIORAL
Group type: EXPERIMENTAL
Intervention: Wearable Device
Description: A Garmin vivofit 3 fitness device will be provided for free to participants randomized to this study arm. This wearable device tracks daily activity and gives reminders to move after an hour of inactivity. The battery lasts for one year and the device is water resistant. Participants can synchronize their device with the study App to give permission to share physical activity level with the study team. Daily physical activity will be tracked for 24 weeks.

Intervention type: BEHAVIORAL
Group type: EXPERIMENTAL
Intervention: Wearable Device
Description: A Garmin vivofit 3 fitness device will be provided for free to participants randomized to this study arm. This wearable device tracks daily activity and gives reminders to move after an hour of inactivity. The battery lasts for one year and the device is water resistant. Participants can synchronize their device with the study App to give permission to share physical activity level with the study team. Daily physical activity will be tracked for 24 weeks.

Intervention type: BEHAVIORAL
Group type: EXPERIMENTAL
Intervention: Automated Motivational Message
Description: An automated behavioral intervention will be delivered once weekly via an in-app motivational message, over the 12-week intervention period.

Intervention type: BEHAVIORAL
Group type: EXPERIMENTAL
Intervention: Automated Motivational Message
Description: An automated behavioral intervention will be delivered once weekly via an in-app motivational message, over the 12-week intervention period.

Intervention type: BEHAVIORAL
Group type: EXPERIMENTAL
Intervention: Personalized Motivational Message
Description: A behavioral intervention will be delivered once weekly via an in-app motivational message adapted to each patient's personalized PA goal progression based on the previous week data from the smartphone activity app (Microsoft band) or the Garmin wearable device over a 12-week intervention period.

Intervention type: BEHAVIORAL
Group type: EXPERIMENTAL
Intervention: Personalized Motivational Message
Description: A behavioral intervention will be delivered once weekly via an in-app motivational message adapted to each patient's personalized PA goal progression based on the previous week data from the smartphone activity app (Microsoft band) or the Garmin wearable device over a 12-week intervention period.