StandUPTV: Reducing Sedentary Screen Time in Adults
StandUPTV
1 other identifier
interventional
110
1 country
2
Brief Summary
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.
Trial Health
Trial Health Score
Automated assessment based on enrollment pace, timeline, and geographic reach
participants targeted
Target at P50-P75 for not_applicable
Started Jun 2021
Typical duration for not_applicable
2 active sites
Health score is calculated from publicly available data and should be used for screening purposes only.
Trial Relationships
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Study Timeline
Key milestones and dates
First Submitted
Initial submission to the registry
July 3, 2020
CompletedFirst Posted
Study publicly available on registry
July 9, 2020
CompletedStudy Start
First participant enrolled
June 21, 2021
CompletedPrimary Completion
Last participant's last visit for primary outcome
September 30, 2023
CompletedStudy Completion
Last participant's last visit for all outcomes
September 30, 2023
CompletedResults Posted
Study results publicly available
April 15, 2025
CompletedApril 15, 2025
March 1, 2025
2.3 years
July 3, 2020
February 21, 2025
April 11, 2025
Conditions
Keywords
Outcome Measures
Primary Outcomes (1)
Changes in Sedentary Screen Time
Minutes per day as measured by Stand UPTV app and activPAL
Baseline to 16 weeks
Secondary Outcomes (4)
Changes in Moderate to Vigorous Physical Activity
Baseline to16 weeks
Changes in Time Spent Sitting
Baseline to 16 weeks
Changes in Time Spent Standing
Baseline and 16 weeks
Changes in Time Spent Stepping
Baseline to 16 weeks
Study Arms (8)
CORE
EXPERIMENTALParticipants 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.
CORE + text
EXPERIMENTALCORE 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.
CORE + Lockout
EXPERIMENTALCORE 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.
CORE + Earn
ACTIVE COMPARATORCORE 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.
CORE + Text + Earn
ACTIVE COMPARATORIntervention 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.
CORE + Text + Lockout
ACTIVE COMPARATORIntervention 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).
CORE + Earn + Lockout
ACTIVE COMPARATORIntervention 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.
CORE + Earn + Lockout + Text
ACTIVE COMPARATORIntervention 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).
Interventions
Participants will receive a "core" intervention which will include a basic version of the StandUPTV app on an android tablet and a Fitbit to use throughout the 16-week intervention.t. SST feedback will be provided within the smartphone application. Self-monitoring will provide passive and objective feedback regarding SST behaviors. 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.
Sedentary Screen Time lockout: LOCKOUT Sedentary Screen Time lockout: LOCKOUT 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 feature 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 prompted to plan for their screen time and provided modest allowances for exceeding their screen time in a given week.
The TEXT component uses app-based prompts (i.e., prompts generated through StandUPTV, not text message based) that will provide simple adaptive content. Content of the prompts will be educational (i.e., based on risks of sedentary screen time) and motivational (i.e., advice to reduce sedentary screen time).
Earn sedentary screen time through moderate-vigorous physical activity: EARN Participants assigned to the EARN component will earn SST by engaging in a \>5 min continuous bout of exercise (as defined by Fitbit minutes \>4 metabolic equivalents). They will earn SST on a 3:1 ratio up until they reach their baseline level of MVPA (5 mins of exercise earns 15 mins of SST). They will receive behavioral strategies to reduce screen time within the app (e.g., self-efficacy, barriers, exercising safely) and a planning tool for scheduling MVPA.
Eligibility Criteria
You may qualify if:
- years of age
- BMI≥25 kg/m2
- + 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
You may not qualify if:
- 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
Contact the study team to confirm eligibility.
Sponsors & Collaborators
Study Sites (2)
Arizona State University
Tempe, Arizona, 85281, United States
California Polytechnic University San Luis Obispo
San Luis Obispo, California, 93407, United States
Related Publications (3)
Hasanaj K, Leonard KS, Sears DD, Yu F, Petrov ME, Keadle SK, Buman MP. Bidirectional associations of recreational sedentary screen time and 24-h behaviors: a dynamic cross-sectional multilevel model analysis. J Act Sedentary Sleep Behav. 2026 Feb 1. doi: 10.1186/s44167-026-00096-0. Online ahead of print.
PMID: 41622211DERIVEDKeadle SK, Hasanaj K, Leonard KS, Fernandez A, Freid L, Weiss S, Legato M, Anand H, Hagobian TA, Phillips SM, Phelan S, Guastaferro K, Seltzer RGN, Buman MP. StandUPTV: a full-factorial optimization trial to reduce sedentary screen time among adults. Int J Behav Nutr Phys Act. 2025 Jun 13;22(1):77. doi: 10.1186/s12966-025-01771-2.
PMID: 40514642DERIVEDKeadle S, Hasanaj K, Leonard-Corzo KS, Fernandez A, Freid L, Weiss S, Legato M, Anand H, Hagobian T, Phillips S, Phelan S, Guastaferro K, Seltzer R, Buman M. StandUPTV: A full-factorial optimization trial to reduce sedentary screen time among adults. Res Sq [Preprint]. 2025 Feb 24:rs.3.rs-5984168. doi: 10.21203/rs.3.rs-5984168/v1.
PMID: 40060037DERIVED
MeSH Terms
Conditions
Condition Hierarchy (Ancestors)
Limitations and Caveats
Owing to delays in initiating and slowing recruitment during the COVID-19 pandemic, we did not meet the enrollment targets. Trial concluded when funding ended.
Results Point of Contact
- Title
- Matthew P Buman, PhD, Director & Professor
- Organization
- Arizona State University
Study Officials
- PRINCIPAL INVESTIGATOR
Matthew P Buman, PhD
Arizona State University
- PRINCIPAL INVESTIGATOR
Sarah Keadle, PhD
California Polytechnic University - San Luis Obispo
Publication Agreements
- PI is Sponsor Employee
- No
- Restrictive Agreement
- No
Study Design
- Study Type
- interventional
- Phase
- not applicable
- Allocation
- RANDOMIZED
- Masking
- SINGLE
- Who Masked
- OUTCOMES ASSESSOR
- Masking Details
- Outcomes assessor will not have access to study arm assignment and participants will be encouraged not to divulge their study arm assignment during assessments.
- Purpose
- PREVENTION
- Intervention Model
- FACTORIAL
- Sponsor Type
- OTHER
- Responsible Party
- SPONSOR
Study Record Dates
First Submitted
July 3, 2020
First Posted
July 9, 2020
Study Start
June 21, 2021
Primary Completion
September 30, 2023
Study Completion
September 30, 2023
Last Updated
April 15, 2025
Results First Posted
April 15, 2025
Record last verified: 2025-03
Data Sharing
- IPD Sharing
- Will not share