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Can too much screen time weaken teen hands?

NCT ID NCT07758699

Knowledge-focused Sponsor: Mariam Mohamed Sherif Source: ClinicalTrials.gov ↗

What the study statuses mean

This study's is highlighted.

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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 Aug 11, 2026 · Last updated Aug 12, 2026 · Updated 1 time

Summary

This study looks at whether a painful hand condition called De Quervain's tenosynovitis, linked to heavy smartphone use, affects hand grip strength and quality of life in teenagers. Researchers will compare two groups of smartphone-addicted adolescents: those with the condition and those without it. Participants will have their hand strength measured with a dynamometer and complete a quality-of-life questionnaire. The goal is to understand the impact of this condition on daily functioning and well-being.

What this could mean

Our plain-language read of the trial. This is informational only, not medical advice or a prediction.

What this could lead to
If a link is found, it could highlight the importance of limiting smartphone use to prevent hand problems in teens.
What could go wrong
This is an observational study, so it cannot prove cause and effect. Results may not apply to all teens or other populations.

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.

Participants

100 people

The number who actually took part.

Started

Apr 2026

Finished

Jun 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.

Who is studied

• Smart phone addicts' adolescents (male and female) ranged from 12 to 16 years.

Ages

12 to 16 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: * Adolescents who have been using smartphones for more than 3 hours per day for 2 years. They have scores ranged from 31 to 60 points for boys and from 33 to 60 points for girls on smart phone addiction scale (SAS-SV) (Appendix II) according to Kwon et al. (2013), who considered boys and girls with these scores to be addicted adolescents. * Adolescents who have been using their phones in odd or abnormal positions, e.g., using smartphones in bed, while lying on their side, lying prone, with one hand for prolonged time or in slouched sitting posture. * Smart phone addicts' adolescents was diagnosed with de quervains (male and female) ranged from 12 to 16 years. Exclusion Criteria: Smart phone addicts' adolescents were excluded from the study if one or more of the following histories were presented: * Upper limb surgery * Inflammatory arthritis * Fractures * Diabetes * Massive use of any tool other than smartphones * Racquet\\ overhead sports athletes

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Conditions

The condition(s) this trial relates to.

de Quervain disease Internet Addiction Disorder

As listed by the trial registrant

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

Hand grip strength Quality of life

Contacts and locations

Locations

  • Faculty of physical therapy, Cairo University

    Giza, Egypt

More trials for these conditions

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