Smartphone Addiction on the Biomechanical Properties of Thumb Muscles and Thumb Sensory Sensitivity

Launched by SAGLIK BILIMLERI UNIVERSITESI · Jun 26, 2025

Keywords

ClinConnect Summary

This study is looking at how using smartphones a lot might affect the muscles and feeling in your thumb. Researchers want to see if people who use their phones excessively have changes in how their thumb muscles work—like how stiff or flexible they are—and if this affects how well they can sense touch or small differences on their thumb. The goal is to better understand if heavy smartphone use can cause muscle or nerve changes in the thumb.

To take part, you need to be a university student between 18 and 30 years old who regularly uses a smartphone. People with certain health problems, past injuries or surgeries on their arms, or skin issues on the thumb won’t be able to join. If you participate, you can expect some tests that measure your thumb muscle strength and sensitivity without any pain. This study is not yet recruiting, but it aims to help us know more about how smartphones might impact our hands, which could be useful for preventing thumb problems in the future.

Gender

ALL

Eligibility criteria

• Inclusion Criteria:
• • Aged 18-30 years
• • Currently enrolled university students
• • Regular smartphone users
• Exclusion Criteria:
• • Presence of systemic, chronic, or neuromuscular disorders
• • History of upper limb surgery or trauma
• • Neurological or orthopedic conditions affecting upper extremities
• • Subcutaneous fat over target muscles \>20 mm
• • Presence of wounds or burns on the measurement area