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Screen TimeSCREENSNCT04098913

Short-term Efficacy of Reducing Screen-based Media Use

A study testing Reduced screen-based media use in people with Screen Time, run by University of Southern Denmark at 1 site in Denmark.

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 purpose of this randomized controlled trial is to investigate the short-term efficacy of reducing recreational screen-based media use on physical activity patterns, sleep, physiological stress in families at least one child between 6-10 years of age. Read more about this study

Who is it for?
Ages 4 to 99 yearsHealthy volunteers can take part
Conditions the study is for
Screen Time
What is being tested?
Reduced screen-based media use
Could I receive a placebo?
No, everyone receives an active treatment
How many people
92 participants
Where
1 siteDenmark
Study dates
6 Jun 2019to 30 Mar 2021
Phase
Interventional
Are there results?
None posted in the registry

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 4 to 99 years
  • All sexes
  • Healthy volunteers accepted
  • Child, Adult, Older adult

Who may be able to join

  • High amount of screen time according to self-report: In each household, at least one adult must be above the 40th percentile for self-reported screen-time during spare time based on what was reported in the survey ((characterized as high in this study).
  • To be eligible for the measurements children in the household must be ≥ 4 and < 15 years old during the entire experiment period.
  • Adults must work full time or be full-time students
  • Adults and children who participates in the measurements must have the resources to remove all recreational- and work-/school-related screen-time in the late afternoon and evening hours and during weekend days, with a few exceptions (described in the "intervention" section below), for a period of 2 weeks (intervention length).
  • The household must include at least one adult and one child 6-10 years of age at the time the survey was sent out, both of whom must consent to participate in the experiment.
  • Participants must report that they consider the extent of their screen time an issue
  • Participants must report to be particularly motivated to decrease screen-time for the whole family household.
  • Members of the household who choose not to participate or who is ineligible to participate in the measurements or the intervention, must be willing to support the remainder of the household in making the experiment a success for them.

Who cannot join

  • If the adults or children only reside in the household part time, e.g. have multiple addresses
  • Prescribed a period of sick leave due to stress within the last 3 months.
  • Diagnosis of sleep disorders from their general practitioner still interfering sleep
  • Working night shifts
  • In any shape or form limited in one's ability to engage in physical activities
  • Neuro psychiatric disorders, such as attention deficit hyperactivity disorder (ADHD) and autism

Trial locations and contacts

1 site in 1 country.

Denmark1 site
  • University of Southern Denmark

    Odense, Funen, 5230

Other trials in Denmark

About this study

Official title: The Short Term Efficacy of Reducing Screen-based Media Use on Physical Activity, Sleep, and Physiological Stress and Well-Being in Families With Children - A Randomized Controlled Trial

The purpose of this randomized controlled trial is to investigate the short-term efficacy of reducing recreational screen-based media use on physical activity patterns, sleep, physiological stress in families at least one child between 6-10 years of age.

Read the detailed description

Today screen-based media devices are almost unavoidable in our everyday lives. The media landscape has changed markedly during the past decade with some of the main aspects being the introduction of new portable devices, social networks, and online streaming services. The current experimental evidence on the efficacy of reducing todays screen-based media use in free-living is scarce.

This randomized controlled trial will be carried out based on the experience from a recently conducted pilot study, which was a 2-arm randomized non-controlled trial. The purposes of the pilot study were to explore the feasibility of our recruitment protocol, 7-day measurement protocol and the degree of compliance to the intervention components; namely a heavy restriction in recreational screen time for a 2-week period, either timed (no screen after 18 pm) or time restricted (≤ 3 hours/week/person).

In the current trial, only the time restricted protocol will be included, compared to a control group. To investigate the short-term efficacy of the intervention, the participants will go through a 7-day measurement protocol at baseline and again, during the final week of the intervention period (follow-up).

Ninety-five families with at least one child between 6-10 years of age will be recruited. A randomly selected adult from each household will be invited to answer a questionnaire, also including an invitation regarding participation in the current randomized controlled trial. Invitations will be sent to the adults' digital mailbox (e-boks), which is an online solution where one can receive mail from e.g. Danish public authorities. Based on the answers in the survey a preliminary screening for eligibility will be conducted (see section on inclusion/exclusion criteria). Families who fulfill specific criteria in the survey and further criteria assessed during a phone conversation will be invited to participate in this randomized controlled trial. Families who wish to participate will, after completion of the baseline protocol, will be randomized to either the intervention group or the control group (see section on arms and interventions).

The intervention (reducing recreational screen-based media use) was designed using the core major and minor elements of Albert Bandura's Social Cognitive Theory; namely, based on the idea of reciprocal determinism of an individual's environment, personal factors and behavior. The intervention includes i) a preparation document and meeting with the parents with the purpose of planning the course of the intervention and prepare the parents to set goals and self-regulate; ii) handing over the families portable screen devices when possible with an alternative mobile phone in exchange, which can be solely used for calls and text messages, will be afforded to the participants; iii) installing monitor software on all computers (stationary and laptops) and tablets and smartphone if these could not be given up, and connect a monitor device to all televisions in each household; iv) using "intervention reminders" (social cues), which will be placed beside stationary screen-based media devices and at central positions in the household such as the dining table.

Conditions
Screen Time
Being tested
Reduced screen-based media use
Keywords
screen time, physical activity, sleep, stress
Medical subject headings
Motor Activity

What participants receive

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

  • Reduced screen-based media useBehavioural

    Participants must remove all recreational screen-based media use beyond 3 hours/week. This includes all recreational screen-based media use inside and outside the household. As a tool to comply with the intervention the families will hand-over all portable screen-based media devices. In return, each participant who own a smartphone will receive a regular cell-phone which can only make phone calls and send text messages. For a maximum of ½ an hour a day, adult participants may use screen-based media for necessary contact/errands. If one of the adult participants can not hand over their smartphones due to daily use for work purposes we will install an app tracking screen use on these devices.

Study groups in NCT04098913
Study groupRoleWhat they receive
Reduced screen-based media useExperimentalReducing recreational screen-based media use for a period of 2 weeks.
Receives: Behavioral: Reduced screen-based media use
Control groupNo interventionParticipants are asked to continue their habitual screen-based media use.

What is being measured

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

  1. Between group change in leisure time spent being non-sedentary (children)

    Non-sedentary time is defined as any waking activity characterized as not being in a sitting, reclining or lying posture with minimal stationary movement. Activity is measured for 7 consecutive days at baseline and follow-up using combined trunk- and thigh worn accelerometry (Axivity AX3).

    Measured: 14 days (experiment period)

Secondary outcomes (15)
  1. Between group change in leisure time spent being non-sedentary(adults)

    Non-sedentary time is defined as any waking activity characterized as not being in a sitting, reclining or lying posture with minimal stationary movement. Activity is measured for 7 consecutive days at baseline and follow-up using combined trunk- and thigh worn accelerometry (Axivity AX3).

    Measured: 14 days (experiment period)

  2. Between group change in leisure time moderate to vigorous physical activity (MVPA) (children)

    Activity is measured for 7 consecutive days at baseline and follow-up using combined trunk- and thigh worn accelerometry (Axivity AX3).

    Measured: 14 days (experiment period)

  3. Between group change in leisure time moderate to vigorous physical activity MVPA (adults)

    Activity is measured for 7 consecutive days at baseline and follow-up using combined trunk- and thigh worn accelerometry (Axivity AX3).

    Measured: 14 days (experiment period)

  4. Between group change in leisure time spent being non-sedentary on weekdays (children)

    Non-sedentary time is defined as any waking activity characterized as not being in a sitting, reclining or lying posture with minimal stationary movement. Activity is measured for 7 consecutive days at baseline and follow-up using combined trunk- and thigh worn accelerometry (Axivity AX3).

    Measured: 14 days (experiment period)

  5. Between group change in leisure time spent being non-sedentary on weekdays (adults)

    Non-sedentary time is defined as any waking activity characterized as not being in a sitting, reclining or lying posture with minimal stationary movement. Activity is measured for 7 consecutive days at baseline and follow-up using combined trunk- and thigh worn accelerometry (Axivity AX3).

    Measured: 14 days (experiment period)

  6. Between group change in leisure time spent being non-sedentary on weekend days (children)

    Non-sedentary time is defined as any waking activity characterized as not being in a sitting, reclining or lying posture with minimal stationary movement. Activity is measured for 7 consecutive days at baseline and follow-up using combined trunk- and thigh worn accelerometry (Axivity AX3).

    Measured: 14 days (experiment period)

  7. Between group change in leisure time spent being non-sedentary on weekend days (adults)

    Non-sedentary time is defined as any waking activity characterized as not being in a sitting, reclining or lying posture with minimal stationary movement. Activity is measured for 7 consecutive days at baseline and follow-up using combined trunk- and thigh worn accelerometry (Axivity AX3).

    Measured: 14 days (experiment period)

  8. Between group change in total sleep duration (children)

    Total sleep duration is defined as time spent asleep within a sleep period, excluding wake time. Total sleep duration is measured for three consecutive nights at baseline and follow-up using single channel EEG-based sleep equipment (Zmachine insight+).

    Measured: 14 days (experiment period)

  9. Between group change in total sleep duration (adults)

    Total sleep duration is defined as time spent asleep within a sleep period, excluding wake time. Total sleep duration is measured for three consecutive nights at baseline and follow-up using single channel EEG-based sleep equipment (Zmachine insight+).

    Measured: 14 days (experiment period)

  10. Between group change in sleep onset latency (children)

    Sleep is measured for three consecutive nights at baseline and follow-up using single channel EEG-based sleep equipment (Zmachine insight+). Sleep onset latency is calculated using the EEG-based sleep stages.

    Measured: 14 days (experiment period)

  11. Between group change in sleep onset latency (adults)

    Sleep is measured for three consecutive nights at baseline and follow-up using single channel EEG-based sleep equipment (Zmachine insight+). Sleep onset latency is calculated using the EEG-based sleep stages.

    Measured: 14 days (experiment period)

  12. Between group change in wake after sleep onset (children)

    Sleep is measured for three consecutive nights at baseline and follow-up using single channel EEG-based sleep equipment (Zmachine insight+). Wake after sleep onset is calculated using the EEG-based sleep stages.

    Measured: 14 days (experiment period)

  13. Between group change in wake after sleep onset (adults)

    Sleep is measured for three consecutive nights at baseline and follow-up using single channel EEG-based sleep equipment (Zmachine insight+). Wake after sleep onset is calculated using the EEG-based sleep stages.

    Measured: 14 days (experiment period)

  14. Between group change in sleep stages (awake, light sleep, deep sleep, REM-sleep) (children)

    Sleep stages are measured for three consecutive nights at baseline and follow-up using single channel EEG-based sleep equipment (Zmachine insight+).

    Measured: 14 days (experiment period)

  15. Between group change in sleep stages (awake, light sleep, deep sleep, REM-sleep) (adults)

    Sleep stages are measured for three consecutive nights at baseline and follow-up using single channel EEG-based sleep equipment (Zmachine insight+).

    Measured: 14 days (experiment period)

Timeline

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

  1. First posted23 Sep 2019
  2. Study start6 Jun 2019
  3. Primary completion30 Mar 2021
  4. Study completion30 Mar 2021

Resources

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
Parallel groups
Masking
None (open label)
Enrolment
92 participants (actual)
IDs, dates and publications
ClinicalTrials.gov ID
NCT04098913
Sponsor's protocol ID
S-20170213 (2)
Acronym
SCREENS
Status last verified
Apr 2021
First submitted
19 Sep 2019
Last updated
9 Apr 2021
Results posted
No
Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
No

Publications

  • Schmidt-Persson J, Rasmussen MGB, Sorensen SO, Mortensen SR, Olesen LG, Brage S, Kristensen PL, Bilenberg N, Grontved A. Screen Media Use and Mental Health of Children and Adolescents: A Secondary Analysis of a Randomized Clinical Trial. JAMA Netw Open. 2024 Jul 1;7(7):e2419881. doi: 10.1001/jamanetworkopen.2024.19881.

    PubMed 38995646
  • Pedersen J, Rasmussen MGB, Sorensen SO, Mortensen SR, Olesen LG, Brage S, Kristensen PL, Puterman E, Grontved A. Effects of limiting digital screen use on well-being, mood, and biomarkers of stress in adults. Npj Ment Health Res. 2022;1(1):14. doi: 10.1038/s44184-022-00015-6. Epub 2022 Oct 12.

    PubMed 37521498
  • Pedersen J, Rasmussen MGB, Sorensen SO, Mortensen SR, Olesen LG, Brond JC, Brage S, Kristensen PL, Grontved A. Effects of Limiting Recreational Screen Media Use on Physical Activity and Sleep in Families With Children: A Cluster Randomized Clinical Trial. JAMA Pediatr. 2022 Aug 1;176(8):741-749. doi: 10.1001/jamapediatrics.2022.1519.

    PubMed 35604678
  • Rasmussen MGB, Pedersen J, Olesen LG, Brage S, Klakk H, Kristensen PL, Brond JC, Grontved A. Short-term efficacy of reducing screen media use on physical activity, sleep, and physiological stress in families with children aged 4-14: study protocol for the SCREENS randomized controlled trial. BMC Public Health. 2020 Mar 23;20(1):380. doi: 10.1186/s12889-020-8458-6.

    PubMed 32293374

Questions about this trial

What is this clinical trial studying?

A study testing Reduced screen-based media use in people with Screen Time, run by University of Southern Denmark at 1 site in Denmark.

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 8 inclusion and 6 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 9 Apr 2021. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 1 site in Denmark. 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?

The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.

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?

Between group change in leisure time spent being non-sedentary (children) (time frame: 14 days (experiment period)). 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 NCT04098913, which also lists 4 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 9 Apr 2021.

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