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Heavy smartphone use may weaken your grip and slow your thinking

NCT ID NCT06636929

Knowledge-focused Sponsor: Kutahya Health Sciences 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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 Jun 25, 2026 · Last updated Jun 27, 2026 · Updated 1 time

Summary

This completed study looked at how problematic smartphone use impacts upper body function and thinking skills in 131 young adults aged 18-25. Participants completed questionnaires about their phone habits and underwent tests measuring grip strength, reaction time, and cognitive abilities like attention and memory. The goal was to understand whether heavy smartphone use is linked to physical and mental performance issues.

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

131 people

The number who actually took part.

Started

Oct 2024

Finished

Dec 2025

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

Healthy adults aged 18-25 years

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: * To be between 18-25 years old * Using a smartphone for at least 1 hour a day * Volunteering to participate in the study Exclusion Criteria: * Having undergone a surgical operation involving the upper extremity within the last 6 months * History of trauma to the shoulder, elbow, hand and wrist in the last 6 months * Presence of a diagnosed neurological, rheumatic or psychiatric disease

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Conditions

The condition(s) this trial relates to.

Internet Addiction Disorder

As listed by the trial registrant

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

Smartphone addiction

Contacts and locations

Locations

  • Kutahya Health Sciences University

    Kütahya, Center, 43100, Turkey (Türkiye)

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