Sedentary BehaviorStandUPTVNCT04464993

StandUPTV: Reducing Sedentary Screen Time in Adults

A study testing Device-based feedback, self-monitoring, and education: CORE, Sedentary Screen Time lockout: LOCKOUT and Context-based prompts: TEXT in people with Sedentary Behavior and Screen Time, run by Arizona State University at 2 sites in United States.

Completed

Finished. The study has ended and is not enrolling. Results may be posted on the official record.

Official record

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Trial 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… Read more about this study

Who is it for?: Ages 23 to 64 yearsHealthy volunteers can take part
Conditions the study is for: Sedentary Behavior, Screen Time, Physical Activity
What is being tested?: Device-based feedback, self-monitoring, and education: CORE, Sedentary Screen Time lockout: LOCKOUT and Context-based prompts: TEXT
Type of treatment: Pill or oral medicine, Lifestyle or therapy programme
Could I receive a placebo?: No, everyone receives an active treatment
How many people: 110 participants
Where: 2 sitesUnited States
Study dates: 21 Jun 2021to 30 Sep 2023
Phase: Interventional
Are there results?: Yes, posted in the registrySummary in the doctors' view

Key requirements

Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.

Ages 23 to 64 years
All sexes
Healthy volunteers accepted
Adult

Who may be able to join

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

Show all 9Show fewer

Willing to download StandUPTV
Able to read/understand English
Willing to be randomized

Who cannot join

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 locations and contacts

2 sites in 1 country.

United States2 sites

California Polytechnic University San Luis Obispo
San Luis Obispo, California, 93407
Arizona State University
Tempe, Arizona, 85281

Other trials in United States

About this study

Read the detailed 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.

Conditions: Sedentary Behavior, Screen Time, Physical Activity, Sleep
Being tested: Device-based feedback, self-monitoring, and education: CORE, Sedentary Screen Time lockout: LOCKOUT, Context-based prompts: TEXT, Earn sedentary screen time through moderate-vigorous physical activity: EARN
Keywords: Multiphase optimization strategy, Mobile health
Medical subject headings: Sedentary Behavior, Motor Activity

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

Device-based feedback, self-monitoring, and education: COREBehavioural
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: LOCKOUTBehavioural
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.
Context-based prompts: TEXTBehavioural
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: EARNBehavioural
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.

Study groups in NCT04464993
Study group	Role	What they receive
CORE	Experimental	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. Receives: Behavioral: Device-based feedback, self-monitoring, and education: CORE
CORE + text	Experimental	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. Receives: Behavioral: Device-based feedback, self-monitoring, and education: CORE; Behavioral: Context-based prompts: TEXT
CORE + Lockout	Experimental	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. Receives: Behavioral: Device-based feedback, self-monitoring, and education: CORE; Behavioral: Sedentary Screen Time lockout: LOCKOUT
CORE + Earn	Active comparator	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. Receives: Behavioral: Device-based feedback, self-monitoring, and education: CORE; Behavioral: Earn sedentary screen time through moderate-vigorous physical activity: EARN
CORE + Text + Earn	Active comparator	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. Receives: Behavioral: Device-based feedback, self-monitoring, and education: CORE; Behavioral: Context-based prompts: TEXT; Behavioral: Earn sedentary screen time through moderate-vigorous physical activity: EARN
CORE + Text + Lockout	Active comparator	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). Receives: Behavioral: Device-based feedback, self-monitoring, and education: CORE; Behavioral: Sedentary Screen Time lockout: LOCKOUT; Behavioral: Context-based prompts: TEXT
CORE + Earn + Lockout	Active comparator	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. Receives: Behavioral: Device-based feedback, self-monitoring, and education: CORE; Behavioral: Sedentary Screen Time lockout: LOCKOUT; Behavioral: Earn sedentary screen time through moderate-vigorous physical activity: EARN
CORE + Earn + Lockout + Text	Active comparator	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). Receives: Behavioral: Device-based feedback, self-monitoring, and education: CORE; Behavioral: Sedentary Screen Time lockout: LOCKOUT; Behavioral: Context-based prompts: TEXT; Behavioral: Earn sedentary screen time through moderate-vigorous physical activity: EARN

What is being measured

The primary outcome is the main question the study is designed to answer.

Changes in Sedentary Screen Time
Minutes per day as measured by Stand UPTV app and activPAL
Measured: Baseline to 16 weeks

Secondary outcomes (4)

Changes in Moderate to Vigorous Physical Activity
Changes in moderate to vigorous physical activity (minutes per day as measured by activPAL)
Measured: Baseline to16 weeks
Changes in Time Spent Sitting
Changes in time spent sitting (Minutes per day as measured by activPAL)
Measured: Baseline to 16 weeks
Changes in Time Spent Standing
Changes in minutes per day of standing time as measured by activPAL
Measured: Baseline and 16 weeks
Changes in Time Spent Stepping
Minutes per day as measured by activPAL
Measured: Baseline to 16 weeks

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

21 Jun 202130 Sep 2023

First posted9 Jul 2020
Study start21 Jun 2021
Primary completion30 Sep 2023
Study completion30 Sep 2023

Resources

Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
Posted resultsParticipant flow, outcome measures and adverse events reported by the sponsor.
Publications (3)Papers the sponsor has linked to this study.
Other trials for Sedentary BehaviorStudies of the same condition, open and under way.
What the trial phases meanHow a treatment moves from first tests in people to approval.

More details

For doctors and researchers: how the study is designed, who runs it, and its registry IDs.

Study design

Study type: Interventional
Phase: Phase N/A
Primary purpose: Prevention
Allocation: Randomised
Intervention model: Factorial
Model description: 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.
Masking: Single blind
Who is masked: Outcomes assessor
Enrolment: 110 participants (actual)

IDs, dates and publications

ClinicalTrials.gov ID: NCT04464993
Sponsor's protocol ID: R01CA239612
Acronym: StandUPTV
Status last verified: Mar 2025
First submitted: 3 Jul 2020
Last updated: 15 Apr 2025
Results posted: Yes, on ClinicalTrials.gov
Data monitoring committee: Yes
FDA-regulated drug: No
FDA-regulated device: No
Individual data sharing: No

Publications

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;5(1):4. doi: 10.1186/s44167-026-00096-0.
PubMed 41622211
Keadle 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.
PubMed 40514642
Keadle 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.
PubMed 40060037

Want to know more?

The sponsor has not listed a contact. The official record may have more details.

Talk to your doctor first and take this page with you. Only the study team can confirm whether you can join.

Questions to ask the study team

What is the study trying to find out?
What would I need to do, and how often would I visit?
Could I receive a placebo instead of the treatment?
What are the possible risks and benefits for me?
Will it cost me anything? Are travel or time paid for?
Can I keep seeing my own doctor during the study?
What happens when the study ends?

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All Sedentary Behavior trials

Study at a glance

From the registry record, last updated by the sponsor on 15 Apr 2025. Recruitment status is as the sponsor reported it: confirm with the study team.

Official title: StandUPTV: Reducing Sedentary Screen Time in Adults
ClinicalTrials.gov ID: NCT04464993
Acronym / sponsor ID: StandUPTV / R01CA239612
Conditions: Sedentary Behavior, Screen Time, Physical Activity, Sleep
Keywords: Multiphase optimization strategy, Mobile health
Study type: Interventional
Recruitment status: Completed
Enrolment: 110 participants (actual)
Lead sponsor: Arizona State UniversityUniversity, hospital or other
Collaborators: California Polytechnic State University-San Luis Obispo
Study start: 21 Jun 2021 (actual)
Primary completion: 30 Sep 2023 (actual)
Study completion: 30 Sep 2023 (actual)
First posted: 9 Jul 2020 (actual)
Results: Posted 15 Apr 2025

Clinical summary

The research question as the sponsor registered it. This describes what the study plans to test, not what it found.

Detailed description

Study design

Primary purpose: Prevention
Allocation: Randomised
Intervention model: Factorial
Masking: Single blind (outcomes assessor)
Number of arms: 8
Model description: 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.

Arm	Type	Receives
CORE	Experimental	Behavioral: Device-based feedback, self-monitoring, and education: COREParticipants 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	Experimental	Behavioral: Device-based feedback, self-monitoring, and education: CORE, Behavioral: Context-based prompts: TEXTCORE 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	Experimental	Behavioral: Device-based feedback, self-monitoring, and education: CORE, Behavioral: Sedentary Screen Time lockout: LOCKOUTCORE 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 comparator	Behavioral: Device-based feedback, self-monitoring, and education: CORE, Behavioral: Earn sedentary screen time through moderate-vigorous physical activity: EARNCORE 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 comparator	Behavioral: Device-based feedback, self-monitoring, and education: CORE, Behavioral: Context-based prompts: TEXT, Behavioral: Earn sedentary screen time through moderate-vigorous physical activity: EARNIntervention 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 comparator	Behavioral: Device-based feedback, self-monitoring, and education: CORE, Behavioral: Sedentary Screen Time lockout: LOCKOUT, Behavioral: Context-based prompts: TEXTIntervention 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 comparator	Behavioral: Device-based feedback, self-monitoring, and education: CORE, Behavioral: Sedentary Screen Time lockout: LOCKOUT, Behavioral: Earn sedentary screen time through moderate-vigorous physical activity: EARNIntervention 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 comparator	Behavioral: Device-based feedback, self-monitoring, and education: CORE, Behavioral: Sedentary Screen Time lockout: LOCKOUT, Behavioral: Context-based prompts: TEXT, Behavioral: Earn sedentary screen time through moderate-vigorous physical activity: EARNIntervention 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).

Who may qualify

Ages: 23 to 64 years
Sex: All
Healthy volunteers: Accepted
Age groups: Adult

Key inclusion criteria (9 listed)

23-64.90 years of age
BMI≥25 kg/m2
3+ h/day of SST
Insufficiently active
Own an Apple or Android smartphone/tablet

Key exclusion criteria (5 listed)

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

Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.

Interventions

Intervention	Type	Arms
Device-based feedback, self-monitoring, and education: COREParticipants 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.	Behavioural	CORE, CORE + Earn, CORE + Earn + Lockout, CORE + Earn + Lockout + Text, CORE + Lockout, CORE + Text + Earn, CORE + Text + Lockout, CORE + text
Sedentary Screen Time lockout: LOCKOUTSedentary 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.	Behavioural	CORE + Earn + Lockout, CORE + Earn + Lockout + Text, CORE + Lockout, CORE + Text + Lockout
Context-based prompts: TEXTThe 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).	Behavioural	CORE + Earn + Lockout + Text, CORE + Text + Earn, CORE + Text + Lockout, CORE + text
Earn sedentary screen time through moderate-vigorous physical activity: EARNEarn 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.	Behavioural	CORE + Earn, CORE + Earn + Lockout, CORE + Earn + Lockout + Text, CORE + Text + Earn

Primary outcome

Changes in Sedentary Screen Time
Time frame: Baseline to 16 weeks
Minutes per day as measured by Stand UPTV app and activPAL

4 secondary outcomes

Changes in Moderate to Vigorous Physical Activity
Time frame: Baseline to16 weeks
Changes in Time Spent Sitting
Time frame: Baseline to 16 weeks
Changes in Time Spent Standing
Time frame: Baseline and 16 weeks
Changes in Time Spent Stepping
Time frame: Baseline to 16 weeks

Results and safety

Results posted to the registry on 15 Apr 2025, as reported by the sponsor. Figures are copied from the record, not re-analysed. Full results on ClinicalTrials.gov.

Participant flow

Group	Started	Completed
CORE	11	10
CORE + Text	13	9
CORE + Lockout	14	11
CORE + Earn	16	15
CORE + Text + Earn	15	14
CORE + Text + Lockout	15	13
CORE + Earn + Lockout	10	7
CORE + Earn + Lockout + Text	16	15

Primary outcome: Changes in Sedentary Screen Time

Time frame: Baseline to 16 weeks. Mean (95% Confidence Interval). Unit: minutes per day

Measure	CORE n = 10	CORE + Text n = 9	CORE + Lockout n = 11	CORE + Earn n = 15	CORE + Text + Earn n = 14	CORE + Text + Lockout n = 13	CORE + Earn + Lockout n = 7	CORE + Earn + Lockout + Text n = 15
Value	-88.2 (-147.7 to -28.8)	-60.1 (-113.0 to -7.2)	-102.7 (-161.5 to -43.8)	-118.1 (-163.0 to -73.1)	-17.0 (-63.6 to 29.6)	-72.8 (-122.9 to -22.6)	-94.3 (-156.2 to -32.4)	-125.7 (-172.0 to -79.3)

Population analysed: Analyzed sample with multiple imputation.

4 secondary outcomes are reported in the full results.

Adverse events

Time frame: Baseline to 16 weeks (end of intervention period).. Other adverse events reported at 0% frequency or more

Group	Serious adverse events	Other adverse events	Deaths
CORE	0 of 11 (0%)	0 of 11 (0%)	0 of 11
CORE + Text	0 of 13 (0%)	0 of 13 (0%)	0 of 13
CORE + Lockout	0 of 14 (0%)	0 of 14 (0%)	0 of 14
CORE + Earn	0 of 16 (0%)	0 of 16 (0%)	0 of 16
CORE + Text + Earn	0 of 15 (0%)	0 of 15 (0%)	0 of 15
CORE + Text + Lockout	0 of 15 (0%)	0 of 15 (0%)	0 of 15
CORE + Earn + Lockout	0 of 10 (0%)	0 of 10 (0%)	0 of 10
CORE + Earn + Lockout + Text	0 of 16 (0%)	0 of 16 (0%)	0 of 16

Limitations and caveats (from the sponsor): 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.

Loading the posted results from ClinicalTrials.gov…

Research links

Official record on ClinicalTrials.govLast updated by the sponsor 15 Apr 2025.
Posted resultsParticipant flow, baseline, all outcome measures and adverse events.
Derived from this study: PubMed 41622211Hasanaj 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;5(1):4. doi: 10.1186/s44167-026-00096-0.
Derived from this study: PubMed 40514642Keadle 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.
Derived from this study: PubMed 40060037Keadle 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.
Individual participant dataSharing planned: No

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Referral and contact

AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part. This study is not recruiting at the moment.

Matthew P Buman, PhD principal investigator

Arizona State University

Sarah Keadle, PhD principal investigator

California Polytechnic University - San Luis Obispo

2 sites in 1 country: see every site and its status.

Questions about this trial

What is this clinical trial studying?

The full registered description is in the About this study section and the official record.

Who may be eligible to take part?

The sponsor lists 9 inclusion and 5 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.

Is this clinical trial currently recruiting?

The record says: finished, as of the sponsor's last update on 15 Apr 2025. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 2 sites in United States. Whether a site is taking part right now should be confirmed with that site. See every site.

What are the possible benefits and risks?

They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.

Are results available for this study?

Yes. Results are posted in the registry (first posted 15 Apr 2025). A summary is in the For doctors view, and the full results are on ClinicalTrials.gov.

How can a doctor refer a patient or contact the research team?

The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

Changes in Sedentary Screen Time (time frame: Baseline to 16 weeks). It is what the study was designed to measure, not a finding.

Where can I read the original study information?

On the ClinicalTrials.gov record for NCT04464993, which also lists 3 linked publications.

Does a listing mean the treatment is approved or proven to work?

No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.

How often is this information updated?

AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 15 Apr 2025.