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Tiny workouts, big impact: exercise snacks curb teen phone addiction

NCT ID NCT07338058

Symptom relief Sponsor: Jinan University Guangzhou Source: ClinicalTrials.gov ↗

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Recruitment status, easiest to join first

Recruiting now
This trial is taking on new participants right now.
Not yet recruiting
Registered, but not yet taking participants.
By invitation only
Not open to general applications. Only people the study team invites can take part.
Paused
Paused for now. It may or may not start again.
Ongoing
Running, but no longer taking on new participants.
Completed This study
The trial has finished. Results may not be published yet.
Stopped early
Stopped early, before it reached the end. That can be for many reasons, including safety.
Cancelled
Cancelled before anyone took part.

Expanded access (not trials)

Expanded access
Not a trial. This treatment can be requested outside a study, case by case, for people who qualify.
Expanded access (paused)
Not a trial. The treatment can normally be requested outside a study, but is unavailable right now.
Expanded access (ended)
Not a trial. The treatment could once be requested outside a study, but no longer can.
Approved
The treatment has been approved, so it is available normally rather than through this programme.

When the status isn't known

Details not published
The full record has not been published yet, so there is little to show here.
Status unknown
This status has not been confirmed recently, so it may be out of date.

First seen Jun 27, 2026 · Last updated Jun 27, 2026

Summary

This study looked at whether doing quick, intense exercises—like 1-minute sprints or squats—during school breaks can help teenagers reduce their mobile phone addiction. Over 5 months, 386 adolescents either did these "exercise snacks" or continued their normal routine. The goal was to see if this approach lowers phone addiction scores, boosts physical fitness, and improves self-control and resilience.

This is an AI summary of the original study and may miss details. Read our disclaimer.

Study facts

What this study's own registry entry says, in plain language.

Phase

Not a phased trial

Phase numbers describe drug development. The registry uses this when they do not apply, as it does for trials of devices, procedures or behaviour changes, and for observational studies.

Participants

386 people

The number who actually took part.

Started

Sep 2025

Finished

Mar 2026

Lead sponsor

Other sponsor

The registry's catch-all category, for sponsors it does not file as a company, a government agency, or a research network.

Who can take part

This study's own entry requirements. Only the study team can say for certain whether you qualify.

Ages

12 to 18 years

Sex

Anyone

Healthy volunteers

Not accepted

This study is not open to healthy volunteers. The entry requirements below say who it is open to.

Show the full entry requirements

Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.

Inclusion Criteria: 1. Adolescents aged 12-18 years enrolled in the participating middle/high school. 2. Owner of a smartphone with daily usage time \> 2 hours. 3. Score on the Smartphone Addiction Scale-Short Version (SAS-SV) indicating a risk of addiction (e.g., score \> 31 for males, \> 33 for females). 4. Physically capable of participating in high-intensity exercise (PAR-Q screening negative). 5. Provided written informed consent (from both student and guardian). Exclusion Criteria: 1. Diagnosed with severe physical disabilities or cardiovascular diseases that contraindicate high-intensity exercise (e.g., congenital heart disease). 2. Currently participating in other professional sports training or weight loss programs. 3. Diagnosed with severe psychiatric disorders (e.g., severe depression, schizophrenia) requiring medication. 4. Taking medications that affect heart rate or cognitive function.

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Conditions

The condition(s) this trial relates to.

Adolescent Behavior Internet Addiction Disorder Sedentary Behavior Self-Control

As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.

Adolescent behavior Sedentary behaviors Smartphone addiction

Contacts and locations

Locations

  • School of Physical Education, Jinan University

    Shatin, New Territories, Hong Kong

More trials for these conditions

Other studies related to the condition(s) this trial covers.