N/A N=110 Randomized Single-blind Prevention

StandUPTV: Reducing Sedentary Screen Time in Adults

Sedentary Behavior · Screen Time · Physical Activity · Sleep

Bottom Line

View on ClinicalTrials.gov: NCT04464993 ↗

Enrolled (actual)

110

Serious AEs

0.0%

Results posted

Apr 2025

Primary outcome: Primary: Changes in Sedentary Screen Time — -88.2; -60.1; -102.7; -118.1 minutes per day

Study Design & Population

Study type: Interventional
Phase: N/A
Interventions: 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 (Behavioral)
Age: Adult · 23+ yrs
Sex: All
Sponsor: Arizona State University
Primary completion: Sep 2023

Outcome Measures

Outcome	Result	p-value
PRIMARY Changes in Sedentary Screen Time	-88.2; -60.1; -102.7; -118.1; -17.0; -72.8	—
SECONDARY Changes in Moderate to Vigorous Physical Activity	-7.2; -0.1; 1.0; -0.7; 1.2; -15.6	—
SECONDARY Changes in Time Spent Sitting	-29.7; -38.6; 27.9; -8.2; -14.9; 1.5	—
SECONDARY Changes in Time Spent Standing	-0.4; 27.4; -15.7; -8.7; 10.3; -2.8	—
SECONDARY Changes in Time Spent Stepping	0.9; 3.3; -0.2; -3.1; 5.9; -12.0	—

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.

Eligibility Criteria

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

View full record on ClinicalTrials.gov →

Data sourced from ClinicalTrials.gov (NCT04464993). Outcome figures and adverse-event rates are extracted automatically from the registry's posted results and are provided for clinician reference, not as a substitute for the primary publication.