StandUPTV: Reducing Sedentary Screen Time in Adults

Arizona State University (ASU)

Status: Completed

Conditions: Physical Activity; Screen Time; Sleep; Sedentary Behavior

Treatments: Behavioral: Device-based feedback, self-monitoring, and education: CORE; Behavioral: Context-based prompts: TEXT; Behavioral: Sedentary Screen Time lockout: LOCKOUT; Behavioral: Earn sedentary screen time through moderate-vigorous physical activity: EARN

Study type: Interventional

Funder types: Other

Identifiers

NCT04464993

R01CA239612

Details and patient eligibility

About

The goal of this study is to develop an optimized intervention for reducing leisure sedentary screen time (SST) in middle-aged adults with overweight or obesity. Investigators will use the multiphase optimization (MOST) framework to conduct a highly efficient full-factorial experimental study to simultaneously test the main effects for each of three intervention components (LOCKOUT, TEXT, EARN) and their interactions (e.g., TEXT+EARN; LOCKOUT+EARN+TEXT) over 16 weeks.

Full description

Primary Aim: To identify which component(s) from three components under consideration for inclusion in StandUPTV reduce SST by >60 min per day per day at 16 weeks. The three components tested will be: (a) LOCKOUT (no vs. yes); (b) TEXT (no vs. yes); and (c) EARN (no vs. yes). The investigators will use a highly efficient experimental strategy to detect effects of individual components as well as all two- and three-way interactions.

The secondary aim of this study is to examine how reductions in SST displace time into other active behaviors, i.e., light-intensity physical activity (LPA), moderate-to vigorous physical activity (MVPA) and activity type (e.g., housework, walking, exercise behaviors). The investigators will use both device-based (activPAL3c) and self-report (ACT24) measures to understand whether SST displacement can increase active behaviors, particularly MVPA.

Enrollment: 110 patients

Sex: All

Ages: 23 to 64 years old

Volunteers: Accepts Healthy Volunteers

Inclusion criteria

• 23-64.90 years of age
• BMI≥25 kg/m2
• 3+ h/day of SST
• Insufficiently active
• Own an Apple or Android smartphone/tablet
• Access to internet at home or unlimited data plan
• Willing to download StandUPTV
• Able to read/understand English
• Willing to be randomized

Exclusion criteria

• Current smoker (more than once per week)
• Major life event (e.g., move out of study area, pregnant)
• MVPA contraindicated
• Occupation requires media use or high amounts of physical activity
• Drug abuse, major illness and/or psychological disorder

Trial design

Primary purpose: Prevention

Allocation: Randomized

Interventional model: Factorial Assignment

Masking: Single Blind

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110 participants in 8 patient groups

CORE

Experimental group

Description:

Participants will receive a "core" intervention which will include a basic version of the StandUPTV app and a Fitbit watch to use throughout the 16-week intervention.The Fitbit will provide device-based behavioral feedback through the StandUPTV self-monitoring component. SST feedback will be Self-monitoring will provide passive and objective feedback regarding SST behaviors and MVPA drawn from Fitbit and SCREENTIME sources. StandUPTV will also contain basic education including information on the risks of SST and tips for reducing SST. As part of this education, all participants will be provided a behavioral target of reducing their SST by 50% from their baseline. This target will be customized for the participant within StandUPTV based on a baseline week of observation.

Treatment:

Behavioral: Device-based feedback, self-monitoring, and education: CORE

CORE + text

Experimental group

Description:

CORE components + The TEXT component uses app-based prompts (i.e., prompts generated through StandUPTV app) that will provide simple adaptive content based upon length of most recent SST bout and time of day. These prompts will specifically target outcome expectations around SST and MVPA.

Treatment:

Behavioral: Context-based prompts: TEXT

Behavioral: Device-based feedback, self-monitoring, and education: CORE

CORE + Lockout

Experimental group

Description:

CORE components + Lockout component will enforce a 50% per week reduction in SST, based upon a baseline week of observation. If SST reaches the prescribed threshold, the investigators will use the limits from the StandUPTV app to restrict screen time through the end of the week (Monday-Sunday); at which point, 50% baseline allotment will be reinstated for an additional week. Participants will be provided with a planning tool for planning SST on a daily basis in order to reach their over 50% reduction goal.

Treatment:

Behavioral: Sedentary Screen Time lockout: LOCKOUT

Behavioral: Device-based feedback, self-monitoring, and education: CORE

CORE + Earn

Active Comparator group

Description:

CORE components + the investigators will enforce a 50% per week reduction in SST, based upon a baseline week of observation. If SST reaches the prescribed threshold, the investigators will use the limits from the StandUPTV app to restrict screen time through the end of the week (Monday-Sunday); at which point, 50% baseline allotment will be reinstated for an additional week. Participants will be provided a planning tool for planning SST on a daily basis in order to reach their over 50% reduction goal.

Treatment:

Behavioral: Earn sedentary screen time through moderate-vigorous physical activity: EARN

Behavioral: Device-based feedback, self-monitoring, and education: CORE

CORE + Text + Earn

Active Comparator group

Description:

Intervention components will be delivered as described in simpler factorial conditions. App shows progress toward SST goal or if goal is exceeded. Can earn additional SST through exercise based on 3:1 ratio , simple adaptive content (by SST bout, time of day). Lockout component will enforce a 50% per week reduction in SST, based upon a baseline week of observation.

Treatment:

Behavioral: Earn sedentary screen time through moderate-vigorous physical activity: EARN

Behavioral: Context-based prompts: TEXT

Behavioral: Device-based feedback, self-monitoring, and education: CORE

CORE + Text + Lockout

Active Comparator group

Description:

Intervention components will be delivered as described in simpler factorial conditions, and... If exceeded, the limits feature will restrict screen time through the end of the week (Monday-Sunday) so cannot exceed limit. Simple adaptive content (by SST bout, time of day).

Treatment:

Behavioral: Sedentary Screen Time lockout: LOCKOUT

Behavioral: Context-based prompts: TEXT

Behavioral: Device-based feedback, self-monitoring, and education: CORE

CORE + Earn + Lockout

Active Comparator group

Description:

Intervention components will be delivered as described in simpler factorial conditions, and... If exceeded, the limits feature will restrict screen time through the end of the week (Monday-Sunday) so cannot exceed limit. Can earn additional SST through exercise based on 3:1 ratio.

Treatment:

Behavioral: Earn sedentary screen time through moderate-vigorous physical activity: EARN

Behavioral: Sedentary Screen Time lockout: LOCKOUT

Behavioral: Device-based feedback, self-monitoring, and education: CORE

CORE + Earn + Lockout + Text

Active Comparator group

Description:

Intervention components will be delivered as described in simpler factorial conditions, and... If exceeded, the limits feature will restrict screen time through the end of the week (Monday-Sunday) so cannot exceed limit. Can earn additional SST through exercise based on 3:1 ratio). Simple adaptive content (by SST bout, time of day).

Treatment:

Behavioral: Earn sedentary screen time through moderate-vigorous physical activity: EARN

Behavioral: Sedentary Screen Time lockout: LOCKOUT

Behavioral: Context-based prompts: TEXT

Behavioral: Device-based feedback, self-monitoring, and education: CORE