Clinical trial No longer in our active list Observational Ages 18 to 35

Investigating how smartphone use affects neck endurance and posture in young adults

Official title: Investigation of the Relationship of Smartphone Use Time With Neck Endurance, Head Posture, Lateral Grip Strength, Hand Grip Strength and Postural Control Parameters in Young Adults

Run by Dokuz Eylul University · NCT05817877 · Data updated 2026-05-14

This study is no longer in our active list. It may have stopped recruiting or finished. The details below are as of 2026-05-14 and are kept for reference. Check ClinicalTrials.gov for its current status, or see similar studies below.

This study looks at how using smartphones for different amounts of time affects neck strength and posture in young adults aged 18 to 35.

Quick facts

Study typeObservational
Ages18 Years to 35 Years
SexAll
Enrollment120 (estimated)
SponsorDokuz Eylul University
Academic / other
Locations1 site (İzmir, Balçova)
Trial IDNCT05817877 on ClinicalTrials.gov

Is this trial a fit for you?

Likely a good fit

Ideal candidates are young adults aged 18-35 who use smartphones with IOS 12 or Android 9 and above.

Probably not a fit

Patients with recent orthopedic surgery, neck pain, or conditions affecting neuromuscular function may not benefit from this study.

A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.

What this trial studies

This observational study evaluates young adults aged 18-35 to explore the relationship between daily smartphone usage and various physical parameters such as neck muscle endurance, grip strength, and head posture. Participants will be categorized based on their average daily phone usage, specifically comparing those who use their phones for more than 5 hours to those who use them for 5 hours or less. The study will utilize screen time tracking features on smartphones to gather data on usage and will assess physical parameters through specific tests and photographic analysis of head posture.

Why it matters

Potential benefit: If successful, this study could provide insights into how smartphone usage impacts physical health, potentially guiding recommendations for healthier phone habits.

How similar studies have gone: While there is ongoing research into the effects of smartphone use on physical health, this specific investigation into neck endurance and posture is relatively novel.

Who can join: the full rules

Show full inclusion / exclusion criteria
Inclusion Criteria:

* Using a phone with IOS 12 or android 9 and above for at least one week

Exclusion Criteria:

* Presence of orthopedic surgery in the last 6 months
* Those who have a disease or take medication that will prevent neuromuscular system and postural control measurements
* have neck pain

Where it's running

  • Dokuz Eylül Univercity
    İzmir, Balçova, Turkey
    Recruiting

Study contacts

Similar studies

Other studies for the same condition or treatment. Recruiting studies are listed first.

How to take part

  1. Review the eligibility criteria above with your treating physician.
  2. Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
  3. Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.
Last reviewed 2026-11-14 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.