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Is your phone weakening your grip? study probes link between smartphone addiction and hand function

NCT ID NCT06843863

Knowledge-focused Sponsor: Istanbul Gelisim University Source: ClinicalTrials.gov ↗

What the study statuses mean

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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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 Jul 28, 2026 · Last updated Jul 29, 2026 · Updated 1 time

Summary

This study investigates whether smartphone addiction is linked to reduced pinch strength, increased muscle stiffness, and hand or wrist pain in young adults. Researchers will measure thumb muscle stiffness and grip strength in 134 participants aged 18 to 25 who are heavy smartphone users. No treatment is given—the goal is simply to understand how excessive phone use may affect hand health.

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 links are found, it could highlight the need for ergonomic guidelines or exercises to prevent hand problems from heavy smartphone use.
What could go wrong
This is an observational study that can show associations but not cause and effect. Results may not apply to older people or those with different phone habits.

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

134 people

The number who actually took part.

Started

Dec 2024

Finished

Jan 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

University student from Istanbul Kent University and Istanbul Gelisim University.

Ages

18 to 25 years

Sex

Anyone

Healthy volunteers

Accepted

You do not need to have the condition being studied to take part.

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: * Willing to participate in the study * Have been using a smartphone for more than one year * Aged between 18 and 25 years * Send 25 or more text messages or emails per day * Spend more than 2 hours browsing the internet and/or play games for more than one hour a day Exclusion Criteria: * Having radiating/radicular pain in the upper extremity * Having neck pain * Congenital deformities in the upper extremity and neck * A history of diagnosed neurological, rheumatic, musculoskeletal, or cardiovascular diseases * Having previously undergone surgery on the neck and/or upper extremity * Having been diagnosed with De Quervain's disease or tendinopathy in the hand/hand wrist muscles before

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Conditions

The condition(s) this trial relates to.

Behavior Internet Addiction Disorder Musculoskeletal Pain

As listed by the trial registrant

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

Smartphone addiction

Contacts and locations

Locations

  • Istanbul Kent University

    Istanbul, Kağıthane, 34320, Turkey (Türkiye)

More trials for these conditions

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