Smartphone addiction and neck muscle health

Is this trial a fit for you?

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

What this trial studies

This is a cross-sectional observational project comparing healthy smartphone users aged 18–30 who meet validated thresholds for smartphone addiction with those who do not. Participants complete the Smartphone Addiction Scale–Short Form (SAS-SF), the Social Media Addiction Scale (SMAS), and the Neck Disability Index (NDI) to capture self-reported use and symptoms. Objective measurements of cervical muscle mechanical properties are taken with MyotonPRO (tone, stiffness, elastance) and pressure pain threshold is measured by algometry. People with diagnosed cervical spine pathology, neurological, rheumatological, or psychiatric disease, prior cervical surgery, or inability to cooperate are excluded.

Why it matters

Who can join: the full rules

Inclusion Criteria:

* Aged between 18-30 years
* Actively using a smartphone
* Volunteer consent provided

Exclusion Criteria:

* Any diagnosed cervical spine pathology
* Neurological, rheumatological, or psychiatric disease
* Previous cervical surgery
* Lack of cooperation or inability to understand instructions

Where it's running

• Saglik Bilimleri Universitesi
  Istanbul, Üsküdar, Turkey (Türkiye) Recruiting

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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.