StandUPTV Habits: Feasibility Trial for Maintaining Reductions in Sedentary Screen Time

Our goal in this study is to further refine StandUPTV, an application designed to reduce SST in adults in our first study (ASU IRB # STUDY00012109), for the StandUPTV Habits program. This program aims to establish a non-sedentary habit triggered by an alert from the StandUPTV application after participants engage in approximately 30 minutes of SST in the evening.

Inclusion Criteria: * Insufficiently active as defined by not meeting current US National Guidelines for Physical Activity of 150 minutes of MVPA/week (Measured by the Stanford * Leisure-Time Activity Categorical Item) * \> 3 hours of SST per day * Use Android (8.0+) smartphone (8.0+ represents 95% of Android device coverage per https://apilevels.com/) * Have regular broadband internet in their home or an unlimited data plan * Able to read/understand English (\>5th grade literacy) * Willing to download StandUPTV Habits * Willing to wear activPAL and CGM device during study assessment periods * Willing to have data shared in de-identified form in Dexcom Clarity platform * Willing to be randomized to either study condition * Not traveling overnight or longer in the next 4 months Exclusion Criteria: * Planned relocation * Current smoker * Have a major illness (e.g., heart disease, cancer, renal disease) for which MVPA is contraindicated * Diagnosed with diabetes or gestational diabetes in the past * Currently using a CGM * Pregnant * Occupation that requires substantial use of personal device for media-related activities (e.g., social media) * Drug abuse * Serious psychological disorder * Not willing to use Fitbit or smart plugs for calculation of sedentary screen time for functionality of StandUPTV app