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Clinical Research Directory

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6 clinical studies listed.

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Screen Time

Tundra lists 6 Screen Time clinical trials. Each listing includes eligibility criteria, study locations, and direct links to research sites in the Tundra directory.

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COMPLETED

NCT05805592

The Effect of Screen to Move Program in Preschool Children

The aim of this study is to determine the effect of the developed program on screen usage time and physical activity for pre-school children.

Gender: All

Ages: 36 Months - 60 Months

Updated: 2026-10-27

Physical Activity
Screen Time
Child, Preschool
ACTIVE NOT RECRUITING

NCT06667661

A Mobile App to Improve 24-Hour Movement Guideline Adherence in Preschoolers

The goal of this clinical trial is to evaluate whether a home-based mHealth intervention can improve adherence to the 24-Hour Movement Guidelines in preschool-aged children (3-4 years old) who currently meet 0 or 1 of the guidelines for physical activity, sedentary behavior, and sleep. The main questions it aims to answer are: * Can the intervention increase the proportion of children meeting all three 24-Hour Movement Guidelines (physical activity, screen-time, and sleep)? * Is the intervention feasible for parents to implement, as measured by a parent feedback survey? Researchers will compare an intervention group to a waitlist control group to assess whether the intervention leads to increased guideline adherence. Parents and Participants: * Children will wear an accelerometer to track physical activity and sleep patterns. * Parents will use a mobile app that delivers weekly lessons and behavior-related goals to encourage healthy movement behaviors in their children. * Parents will complete questionnaires on their child's movement behaviors and development at baseline, 6 weeks, and 12 weeks. * Additionally, children will undergo motor skills assessments, and parents will provide feedback on cognitive development and behavioral changes.

Gender: All

Ages: 3 Years - 4 Years

Updated: 2026-10-27

1 state

Healthy
24-Hour Movement Guidelines
Feasibility Studies
+10
ACTIVE NOT RECRUITING

NCT06700525

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.

Gender: All

Ages: 23 Years - 64 Years

Updated: 2026-10-13

2 states

Sedentary Behaviors
Screen Time
Physical Activity
+3
NOT YET RECRUITING

NCT07827703

Effects of Digital Detox on Mental Health in Young Adults

The goal of this clinical trial is to learn whether a short, self-guided program for cutting down smartphone screen time can reduce symptoms of depression in young adults. It includes students in Oslo, Norway, who have applied for help at the student mental health service (SiO Mental Health). The main questions it aims to answer are: * Does a 2-week screen time reduction program reduce symptoms of depression? * Does it reduce symptoms of anxiety? * Can a simple, widely available phone app reduce screen time, and does the reduction last? Researchers will compare students who start the program right away with students who continue their usual care for 2 weeks and receive the same program afterwards. Participants are placed in one of the two groups by chance, like flipping a coin. Participants will: * Answer questionnaires about depression and anxiety symptoms at the start and again after 2 weeks * Upload screenshots of the Screen Time summary on their iPhone at the start, after 2 weeks, and after 12 weeks * Install an app that blocks the apps they find most distracting and keep it active for 2 weeks, if they are placed in the program group * Take part entirely online, with no clinic visits and no contact with the study team

Gender: All

Ages: 18 Years - Any

Updated: 2026-09-23

Anxiety Symptoms
Screen Time
Depressive Symptoms
COMPLETED

NCT07770997

The Green Prescription Program for Increasing Physical Activity in Adolescents

This study evaluated the effectiveness of the Green Prescription, a school-based behavioral intervention that incorporated health education, designed to increase physical activity among adolescents aged 15-17 years who were insufficiently active. Participants received individualized written physical activity recommendations together with motivational support to encourage gradual increases in leisure-time physical activity. The intervention was tailored to three target groups: adolescents with overweight or obesity, excessive screen time, or low perceived social support. The study consisted of two sequential cohorts. In the first cohort, the Green Prescription was delivered by a physical education teacher. In the second cohort, the intervention was delivered by a physical education teacher supported by an interdisciplinary team consisting of a dietitian, psychologist, special education teacher, and physiotherapist. Physical activity and other health-related outcomes were assessed at baseline, immediately after the 12-week intervention, and six months later. The study evaluated the effectiveness of the Green Prescription in each intervention group and determined whether the interdisciplinary delivery model resulted in greater improvements in physical activity and healthy lifestyle behaviors than the teacher-led model.

Gender: All

Ages: 15 Years - 17 Years

Updated: 2026-08-18

1 state

Social Support
Screen Time
Physical Inactivity
+2
COMPLETED

NCT07731386

Screen Time and Language Development in Toddlers Assessed With the Bayley-4

This cross-sectional study investigated whether caregiver-reported daily screen time is associated with language development in toddlers aged 12 to 42 months, measured with the Bayley-4. Receptive language was the primary outcome; expressive language, cognitive, and motor scaled scores were secondary. The study was conducted at the pediatric outpatient clinics of a tertiary care city hospital in Türkiye.

Gender: All

Ages: 12 Months - 42 Months

Updated: 2026-07-28

Language Development
Screen Time
Child Development